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Eclipseプラグインを使ったAndroidアプリケーションの作成 Eclipseプラグインを使わないAndroidアプリケーションの作成 |＃＃＃＃＃＃ここまで翻訳＃＃＃＃＃＃| Implementing Activity Callbacks Opening a New ScreenOpening a Screen Some Intent examples Returning a Result from a Screen Lifetime of the new screen Listening for Button Clicks Configuring General Window Properties Storing and Retrieving StateStoring and Retrieving Larger or More Complex Persistent Data Playing Media Files Listening For and Broadcasting Global Messages, and Setting AlarmsSending the message Receiving the message Other system messages Listening for phone events Setting Alarms Displaying AlertsNormal Alerts AlertDialog Notifications Displaying a Progress Bar Adding Your Application to the Favorites List Adding Items to the Screen MenuAdding Submenus Adding yourself to menus on other applications The offering application Display a Web Page Binding to Data Capture Images from the Phone Camera Handling Expensive Operations in the UI Thread Selecting, Highlighting, or Styling Portions of Text List of Files for an Android Application Eclipseプラグインを使ったAndroidアプリケーションの作成 Android Eclipseプラグインを使用することは、新しいAndroidアプリケーションの作成を始める最も高速で最も簡単な方法です。 プラグインは自動的にあなたのアプリケーションのために正しいプロジェクト構造を生成し、リソースを自動的にコンパイルしてくれます。 Androidアプリケーションの動作原理を理解するために、Androidアプリケーション解体新書を読んでみるのもよいでしょう。 SDKの sample/ フォルダでApiDemosアプリケーションと他のサンプルアプリケーションを見てみることもお勧めします。 最終的にはHello AndroidとNotepadのコードチュートリアルを行うことがEclipseでのAndroid開発を始めるには素敵な方法です。 特にHello Androidチュートリアルを行うことは、Eclipseで新しいAndroidアプリケーションを作成するための優れた導入方法となるでしょう。 Eclipseプラグインを使わないAndroidアプリケーションの作成 |＃＃＃＃＃＃ここまで翻訳＃＃＃＃＃＃| This topic describes the manual steps in creating an Android application. Before reading this, you should read Overview of an Android Application to understand the basics of how an Android application works. You might also want to look at the sample applications that ship with Android under the samples/ directory. Here is a list of the basic steps in building an application. 1. Create your required resource files This includes the AndroidManifest.xml global description file, string files that your application needs, and layout files describing your user interface. A full list of optional and required files and syntax details for each is given in File List for an Android Application. 2. Design your user interface See Implementing a UI for details on elements of the Android screen. 3. Implement your Activity (this page) You will create one class/file for each screen in your application. Screens will inherit from an android.app class, typically android.app.Activity for basic screens, android.app.ListActivity for list screens, or android.app.Dialog for dialog boxes. You will implement the required callbacks that let you draw your screen, query data, and commit changes, and also perform any required tasks such as opening additional screens or reading data from the device. Common tasks, such as opening a new screen or reading data from the device, are described below. The list of files you ll need for your application are described in List of Files for an Android Application. 4. Build and install your package. The Android SDK has some nice tools for generating projects and debugging code. Implementing Activity Callbacks Android calls a number of callbacks to let you draw your screen, store data before pausing, and refresh data after closing. You must implement at least some of these methods. See Lifetime of a Screen to learn when and in what order these methods are called. Here are some of the standard types of screen classes that Android provides android.app.Activity - This is a standard screen, with no specialization. android.app.ListActivity - This is a screen that is used to display a list of something. It hosts a ListView object, and exposes methods to let you identify the selected item, receive callbacks when the selected item changes, and perform other list-related actions. android.app.Dialog - This is a small, popup dialog-style window that isn t intended to remain in the history stack. (It is not resizeable or moveable by the user.) Opening a New Screen Your Activity will often need to open another Activity screen as it progresses. This new screen can be part of the same application or part of another application, the new screen can be floating or full screen, it can return a result, and you can decide whether to close this screen and remove it from the history stack when you are done with it, or to keep the screen open in history. These next sections describe all these options. Floating or full? When you open a new screen you can decide whether to make it transparent or floating, or full-screen. The choice of new screen affects the event sequence of events in the old screen (if the new screen obscures the old screen, a different series of events is called in the old screen). See Lifetime of an Activity for details. Transparent or floating windows are implemented in three standard ways Create an app.Dialog class Create an app.AlertDialog class Set the Theme_Dialog theme attribute to @android style/Theme.Dialog in your AndroidManifest.xml file. For example activity class="AddRssItem" android label="Add an item" android theme="@android style/Theme.Dialog"/ Calling startActivity() or startSubActivity() will open a new screen in whatever way it defines itself (if it uses a floating theme it will be floating, otherwise it will be full screen). Opening a Screen When you want to open a new screen, you can either explicitly specify the activity class to open, or you can let the operating system decide which screen to open, based upon the data and various parameters you pass in. A screen is opened by calling startActivity and passing in an Intent object, which specifies the criteria for the handling screen. To specify a specific screen, call Intent.setClass or setClassName with the exact activity class to open. Otherwise, set a variety of values and data, and let Android decide which screen is appropriate to open. Android will find one or zero Activities that match the specified requirements; it will never open multiple activities for a single request. More information on Intents and how Android resolves them to a specific class is given in the Intent topic. Some Intent examples The following snippet loads the com.google.android.samples.Animation1 class, and passes it some arbitrary data. Intent myIntent = new Intent(); myIntent.component = "com.google.android.samples.Animation1"; myIntent.putExtra("com.google.android.samples.SpecialValue", "Hello, Joe!"); // key/value pair, where key needs current package prefix. startActivity(myIntent); The next snippet requests that a Web page be opened by specifying the VIEW action, and a URI data string starting with "http //" schema Intent myIntent = new Intent("android.intent.action.VIEW", "http //www.google.com"); myIntent.putExtra("com.google.android.samples.SpecialValue", "Hello, Joe!"); // key/value pair, where key needs current package prefix. Here is the intent filter from the AndroidManifest.xml file for com.google.android.browser intent-filter action value="android.intent.action.VIEW" / category value="android.intent.category.DEFAULT" / scheme value="http" / scheme value="https" / scheme value="file" / /intent-filter Android defines a number of standard values, for instance the action constants defined by Intent. You can define custom values, but both the caller and handler must use them. See the intent-filter tag description in AndroidManifest.xml File Details for more information on the manifest syntax for the handling application. Returning a Result from a Screen A window can return a result after it closes. This result will be passed back into the calling Activity s onActivityResult() method, which can supply an integer result code, a string of data, and a Bundle of arbitrary data, along with the request code passed to startSubActivity(). Note that you must call the startSubActivity() method that accepts a request code parameter to get this callback. The following code demonstrates opening a new screen and retrieving a result. // Open the new screen. public void onClick(View v){ // Start the activity whose result we want to retrieve. The // result will come back with request code GET_CODE. Intent intent = new Intent(this, com.example.app.ChooseYourBoxer.class); startSubActivity(intent, CHOOSE_FIGHTER); } // Listen for results. protected void onActivityResult(int requestCode, int resultCode, String data, Bundle extras){ // See which child activity is calling us back. switch (resultCode) { case CHOOSE_FIGHTER // This is the standard resultCode that is sent back if the // activity crashed or didn t doesn t supply an explicit result. if (resultCode == RESULT_CANCELED){ myMessageboxFunction("Fight cancelled"); } else { myFightFunction(data, extras); } default break; } } // Class SentResult // Temporary screen to let the user choose something. private OnClickListener mLincolnListener = new OnClickListener(){ public void onClick(View v) { Bundle stats = new Bundle(); stats.putString("height","6\ 4\""); stats.putString("weight", "190 lbs"); stats.putString("reach", "74\""); setResult(RESULT_OK, "Lincoln", stats); finish(); } }; private OnClickListener mWashingtonListener = new OnClickListener() { public void onClick(View v){ Bundle stats = new Bundle(); stats.putString("height","6\ 2\""); stats.putString("weight", "190 lbs"); stats.putString("reach", "73\""); setResult(RESULT_OK, "Washington", Bundle); finish(); } }; Lifetime of the new screen An activity can remove itself from the history stack by calling Activity.finish() on itself, or the activity that opened the screen can call Activity.finishSubActivity() on any screens that it opens to close them. Listening for Button Clicks Button click and other UI event capturing are covered in Listening for UI Notifications on the UI Design page. Configuring General Window Properties You can set a number of general window properties, such as whether to display a title, whether the window is floating, and whether it displays an icon, by calling methods on the Window member of the underlying View object for the window. Examples include calling getWindow().requestFeature() (or the convenience method requestWindowFeature(some_feature)) to hide the title. Here is an example of hiding the title bar //Hide the title bar requestWindowFeature(Window.FEATURE_NO_TITLE); Storing and Retrieving State If your application is dumped from memory because of space concerns, it will lose all user interface state information such as checkbox state and text box values as well as class member values. Android calls Activity.onFreeze before it pauses the application. This method hands in a Bundle that can be used to store name/value pairs that will persist and be handed back to the application even if it is dropped from memory. Android will pass this Bundle back to you when it calls onCreate(). This Bundle only exists while the application is still in the history stack (whether or not it has been removed from memory) and will be lost when the application is finalized. See the topics for onFreeze(Bundle) and onCreate(Bundle) for examples of storing and retrieving state. Read more about the life cycle of an application in Lifetime of an Activity. Storing and Retrieving Larger or More Complex Persistent Data Your application can store files or complex collection objects, and reserve them for private use by itself or other activities in the application, or it can expose its data to all other applications on the device. See Storing, Retrieving, and Exposing Data to learn how to store and retrieve private data, how to store and retrieve common data from the device, and how to expose your private data to other applications. Playing Media Files Please see the document Android Media APIs for more details. Listening For and Broadcasting Global Messages, and Setting Alarms You can create a listening class that can be notified or even instantiated whenever a specific type of system message is sent. The listening classes, called intent receivers, extend IntentReceiver. If you want Android to instantiate the object whenever an appropriate intent notification is sent, define the receiver with a receiver element in the AndroidManifext.xml file. If the caller is expected to instantiate the object in preparation to receive a message, this is not required. The receiver will get a call to their IntentReceiver.onReceiveIntent() method. A receiver can define an intent-filter tag that describes the types of messages it will receive. Just as Android s IntentResolver will look for appropriate Activity matches for a startActivity() call, it will look for any matching Receivers (but it will send the message to all matching receiver, not the "best" match). To send a notification, the caller creates an Intent object and calls Activity.broadcastIntent() with that Intent. Multiple recipients can receive the same message. You can broadcast an Intent message to an intent receiver in any application, not only your own. If the receiving class is not registered using receiver in its manifest, you can dynamically instantiate and register a receiver by calling Context.registerReceiver(). Receivers can include intent filters to specify what kinds of intents they are listening for. Alternatively, if you expect a single known caller to contact a single known receiver, the receiver does not specify an intent filter, and the caller specifies the receiver s class name in the Intent by calling Intent.setClassName() with the recipient s class name. The recipient receives a Context object that refers to its own package, not to the package of the sender. Note If a receiver or broadcaster enforces permissions, your application might need to request permission to send or receive messages from that object. You can request permission by using the uses-permission tag in the manifest. Here is a code snippet of a sender and receiver. This example does not demonstrate registering receivers dynamically. For a full code example, see the AlarmService class in the ApiDemos project. Sending the message // We are sending this to a specific recipient, so we will // only specify the recipient class name. Intent intent = new Intent(this, AlarmReceiver.class); intent.putExtra("message","Wake up."); broadcastIntent(intent); Receiving the message Receiver AndroidManifest.xml (because there is no intent filter child, this class will only receive a broadcast when the receiver class is specified by name, as is done in this example) receiver class=".AlarmReceiver" / Receiver Java code public class AlarmReceiver extends IntentReceiver{ // Display an alert that we ve received a message. @Override public void onReceiveIntent(Context context, Intent intent){ // Send a text notification to the screen. NotificationManager nm = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE); nm.notifyWithText(R.id.alarm, "Alarm!!!", NotificationManager.LENGTH_SHORT, null); } } Other system messages You can listen for other system messages sent by Android as well, such as USB connection/removal messages, SMS arrival messages, and timezone changes. See Intent for a list of broadcast messages to listen for. Messages are marked "Broadcast Action" in the documentation. Listening for phone events The telephony package overview page describes how to register to listen for phone events. Setting Alarms Android provides an AlarmManager service that will let you specify an Intent to send at a designated time. This intent is typically used to start an application at a preset time. (Note If you want to send a notification to a sleeping or running application, use Handler instead.) Displaying Alerts There are two major kinds of alerts that you may display to the user (1) Normal alerts are displayed in response to a user action, such as trying to perform an action that is not allowed. (2) Out-of-band alerts, called notifications, are displayed as a result of something happening in the background, such as the user receiving new e-mail. Normal Alerts Android provides a number of ways for you to show popup notifications to your user as they interact with your application. Class Description app.AlertDialogorContext.showAlert() A popup alert dialog with two buttons (typically OK and Cancel) that take callback handlers. It can be created separately, or launched using the Application helper method Context.showAlert(). See the section after this table for more details. ProgressDialog A dialog box used to indicate progress of an operation with a known progress value or an indeterminate length (setProgress(bool)). See Views Progress Bar in ApiDemos for examples. Activity By setting the theme of an activity to android theme="android style/Theme.Dialog", your activity will take on the appearance of a normal dialog, floating on top of whatever was underneath it. You usually set the theme through the android theme attribute in your AndroidManifest.xml. The advantage of this over Dialog and AlertDialog is that Application has a much better managed lifecycle than dialogs if a dialog goes to the background and is killed, you cannot recapture state, whereas Application exposes a Bundle of saved values in onCreate() to help you maintain state. AlertDialog This is a basic warning dialog box that lets you configure a message, button text, and callback. You can create one by calling the Application helper method Context.showAlert(), as shown here. private Handler mHandler = new Handler() { public void handleMessage(Message msg) { switch (msg.what) { case ACCEPT_CALL answer(msg.obj); break; case BOUNCE_TO_VOICEMAIL voicemail(msg.obj); break; } } }; private void IncomingMotherInlawCall(Connection c) { String Text; // "Answer" callback. Message acceptMsg = Message.obtain(); acceptMsg.target = mHandler; acceptMsg.what = ACCEPT_CALL; acceptMsg.obj = c.getCall(); // "Cancel" callback. Message rejectMsg = Message.obtain(); rejectMsg.target = mHandler; rejectMsg.what = BOUNCE_TO_VOICEMAIL; rejectMsg.obj = c.getCall(); showAlert(null, "Phyllis is calling", "Answer", acceptMsg, true, rejectMsg); } Notifications Out-of-band alerts should always be displayed using the NotificationManager, which allows you to tell the user about something they may be interested in without disrupting what they are currently doing. A notification can be anything from a brief pop-up box informing the user of the new information, through displaying a persistent icon in the status bar, to vibrating, playing sounds, or flashing lights to get the user s attention. In all cases, the user must explicitly shift their focus to the notification before they can interact with it. The following code demonstrates using NotificationManager to display a basic text popup when a new SMS message arrives in a listening service, and provides the current message count. You can see several more examples in the ApiDemos application, under app/ (named notification*.java). static void setNewMessageIndicator(Context context, int messageCount){ // Get the static global NotificationManager object. NotificationManager nm = NotificationManager.getDefault(); // If we re being called because a new message has been received, // then display an icon and a count. Otherwise, delete the persistent // message. if (messageCount 0) { nm.notifyWithText(myApp.NOTIFICATION_GUID, // ID for this notification. messageCount + " new message" + messageCount 1 ? "s" "", // Text to display. NotificationManager.LENGTH_SHORT); // Show it for a short time only. } } To display a notification in the status bar and have it launch an intent when the user selects it (such as the new text message notification does), call NotificationManager.notify(), and pass in vibration patterns, status bar icons, or Intents to associate with the notification. Displaying a Progress Bar An activity can display a progress bar to notify the user that something is happening. To display a progress bar in a screen, call Activity.requestWindowFeature(Window.FEATURE_PROGRESS). To set the value of the progress bar, call Activity.getWindow().setFeatureInt(Window.FEATURE_PROGRESS, level). Progress bar values are from 0 to 9,999, or set the value to 10,000 to make the progress bar invisible. You can also use the ProgressDialog class, which enables a dialog box with an embedded progress bar to send a "I m working on it" notification to the user. Adding Your Application to the Favorites List You can t. Only a user can add an application to the Favorites list. Adding Items to the Screen Menu Every Android screen has a default menu with default options, such as adding the activity to the favorites menu. You can add your own menu entries to the default menu options by implementing Activity.onCreateOptionsMenu or Activity.onPrepareOptionsMenu(), and adding Item objects to the Menu passed in. To handle clicks implement Activity.onOptionsItemSelected() to handle the click in your Activity class. You may also pass the Item object a handler class that implements the Runnable class (a handler) but this is less efficient and discouraged. An application receives a callback at startup time to enable it to populate its menu. Additionally, it receives callbacks each time the user displays the options menu to let you perform some contextual modifications on the menu. To populate the menu on startup, override Activity.onCreateOptionsMenu; to populate it when the menu is called (somewhat less efficient), you can override Activity.onPrepareOptionsMenu(). Each Activity has its own menu list. Menu items are displayed in the order added, though you can group them as described in the Menu.add documentation. The following code snippet adds three items to the default menu options and handles them through the overridden Activity.onOptionsItemSelected() method. You can show or hide menu items by calling setItemShown() or setGroupShown(). // Called only the first time the options menu is displayed. // Create the menu entries. // Menu adds items in the order shown. @Override public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu); // Parameters for menu.add are // group -- Not used here. // id -- Used only when you want to handle and identify the click yourself. // title menu.add(0, 0, "Zoom"); menu.add(0, 1, "Settings"); menu.add(0, 2, "Other"); return true; } // Activity callback that lets your handle the selection in the class. // Return true to indicate that you ve got it, false to indicate // that it should be handled by a declared handler object for that // item (handler objects are discouraged for reasons of efficiency). @Override public boolean onOptionsItemSelected(Menu.Item item){ switch (item.getId()) { case 0 showAlert("Menu Item Clicked", "Zoom", "ok", null, false, null); return true; case 1 showAlert("Menu Item Clicked", "Settings", "ok", null, false, null); return true; case 2 showAlert("Menu Item Clicked", "Other", "ok", null, false, null); return true; } return false; } You can add key shortcuts by calling the Item.setAlphabeticShortcut() or Item.setNumericShortcut() methods, as demonstrated here to add a "C" shortcut to a menu item thisItem.setAlphabeticShortcut(0, c ); Adding Submenus Add a submenu by calling Menu.addSubMenu(), which returns a SubMenu object. You can then add additional items to this menu. Menus can only be one level deep, and you can customize the appearance of the submenu menu item. @Override public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu); // Parameters for menu.add are // group -- Not used here. // id -- Used only when you want to handle and identify the click yourself. // title menu.add(0, 0, "Send message"); menu.add(0, 1, "Settings"); menu.add(0, 2, "Local handler"); menu.add(0, 3, "Launch contact picker"); // Add our submenu. SubMenu sub = menu.addSubMenu(1, 4, "Days of the week"); sub.add(0, 5, "Monday"); sub.add(0, 6, "Tuesday"); sub.add(0, 7, "Wednesday"); sub.add(0, 8, "Thursday"); sub.add(0, 9, "Friday"); sub.add(0, 10, "Saturday"); sub.add(0, 11, "Sunday"); return true; } Adding yourself to menus on other applications You can also advertise your Activity s services so that other Activities can add your activity to their own option menu. For example, suppose you implement a new image handling tool that shrinks an image to a smaller size and you would like to offer this as a menu option to any other Activity that handles pictures. To do this, you would exposes your capabilities inside an intent filter in your manifest. If another application that handles photos asks Android for any Activities that can perform actions on pictures, Android will perform intent resolution, find your Activity, and add it to the other Activity s options menu. The offering application The application offering the service must include an intent-filter element in the manifest, inside the activity tag of the offering Activity. The intent filter includes all the details describing what it can do, such as a type element that describes the MIME type of data that it can handle, a custom action value that describes what your handling application can do (this is so that when it receives the Intent on opening it knows what it is expected to do), and most important, include a category filter with the value android.intent.category.ALTERNATIVE and/or android.intent.category.SELECTED_ALTERNATIVE (SELECTED_ALTERNATIVE is used to handle only the currently selected element on the screen, rather than the whole Activity intent. Here s an example of a snip of a manifest that advertises picture shrinking technology for both selected items and the whole screen. activity class="PictureShrink" !-- Handling class -- intent-filter label="Shrink picture" !-- Menu label to display -- action value="com.example.sampleapp.SHRINK_IT" / type value="image/*" / !-- MIME type for generic images -- category value="android.intent.category.ALTERNATIVE " / category value="android.intent.category.SELECTED_ALTERNATIVE" / /intent-filter /activity The menu-displaying application An application that wants to display a menu that includes any additional external services must, first of all, handle its menu creation callback. As part of that callback it creates an intent with the category Intent.ALTERNATIVE_CATEGORY and/or Intent.SELECTED_ALTERNATIVE, the MIME type currently selected, and any other requirements, the same way as it would satisfy an intent filter to open a new Activity. It then calls menu.addIntentOptions() to have Android search for and add any services meeting those requirements. It can optionally add additional custom menu items of its own. You should implement SELECTED_ALTERNATIVE in onPrepareOptionsMenu() rather than onCreateOptionsMenu(), because the user s selection can change after the application is launched. Here s a code snippet demonstrating how a picture application would search for additional services to display on its menu. @Override public boolean onCreateOptionsMenu(Menu menu){ super.onCreateOptionsMenu(menu); // Create an Intent that describes the requirements to fulfill to be included // in our menu. The offering app must include a category value of Intent.ALTERNATIVE_CATEGORY. Intent intent = new Intent(null, getIntent().getData()); intent.addCategory(Intent.ALTERNATIVE_CATEGORY); // Search for, and populate the menu with, acceptable offering applications. menu.addIntentOptions( 0, // Group 0, // Any unique IDs we might care to add. MySampleClass.class.getName(), // Name of the class displaying the menu--here, its this class. null, // No specifics. intent, // Previously created intent that describes our requirements. 0, // No flags. null); // No specifics. return true; } Display a Web Page Use the webkit.WebView object. Binding to Data You can bind a ListView to a set of underlying data by using a shim class called ListAdapter (or a subclass). ListAdapter subclasses bind to a variety of data sources, and expose a common set of methods such as getItem() and getView(), and uses them to pick View items to display in its list. You can extend ListAdapter and override getView() to create your own custom list items. There are essentially only two steps you need to perform to bind to data 1. Create a ListAdapter object and specify its data source 2. Give the ListAdapter to your ListView object. That s it! Here s an example of binding a ListActivity screen to the results from a cursor query. (Note that the setListAdapter() method shown is a convenience method that gets the page s ListView object and calls setAdapter() on it.) // Run a query and get a Cursor pointing to the results. Cursor c = People.query(this.getContentResolver(), null); startManagingCursor(c); // Create the ListAdapter. A SimpleCursorAdapter lets you specify two interesting things // an XML template for your list item, and // The column to map to a specific item, by ID, in your template. ListAdapter adapter = new SimpleCursorAdapter(this, android.R.layout.simple_list_item_1, // Use a template that displays a text view c, // Give the cursor to the list adapter new String[] {People.NAME} , // Map the NAME column in the people database to... new String[] {"text1"}); // The "text1" view defined in the XML template setListAdapter(adapter); See view/List4 in the ApiDemos project for an example of extending ListAdapter for a new data type. Capture Images from the Phone Camera You can hook into the device s camera onto your own Canvas object by using the CameraDevice class. See that class s documentation, and the ApiDemos project s Camera Preview application (Graphics/Camera Preview) for example code. Handling Expensive Operations in the UI Thread Avoid performing long-running operations (such as network I/O) directly in the UI thread — the main thread of an application where the UI is run — or your application may be blocked and become unresponsive. Here is a brief summary of the recommended approach for handling expensive operations 1. Create a Handler object in your UI thread 2. Spawn off worker threads to perform any required expensive operations 3. Post results from a worker thread back to the UI thread s handler either through a Runnable or a Message 4. Update the views on the UI thread as needed The following outline illustrates a typical implementation public class MyActivity extends Activity { [ . . . ] // Need handler for callbacks to the UI thread final Handler mHandler = new Handler(); // Create runnable for posting final Runnable mUpdateResults = new Runnable() { @Override public void run() { updateResultsInUi(); } }; @Override protected void onCreate(Bundle icicle) { super.onCreate(icicle); [ . . . ] } protected void startLongRunningOperation() { // Fire off a thread to do some work that we shouldn t do directly in the UI thread Thread t = new Thread() { public void run() { mResults = doSomethingExpensive(); mHandler.post(mUpdateResults); } }; t.start(); } private void updateResultsInUi() { // Back in the UI thread -- update our UI elements based on the data in mResults [ . . . ] } } For further discussions on this topic, see Developing Responsive Applications and the Handler documentation. Selecting, Highlighting, or Styling Portions of Text You can highlight or style the formatting of strings or substrings of text in a TextView object. There are two ways to do this If you use a string resource, you can add some simple styling, such as bold or italic using HTML notation. So, for example, in res/values/strings.xml you could declare this resource string id="@+id/styled_welcome_message" We are b i so /i /b glad to see you. /string /resources To style text on the fly, or to add highlighting or more complex styling, you must use the Spannable object as described next. To style text on the fly, you must make sure the TextView is using Spannable storage for the text (this will always be true if the TextView is an EditText), retrieve its text with getText(), and call setSpan(Object, int, int, int), passing in a new style class from the android.text.style package and the selection range. The following code snippet demonstrates creating a string with a highlighted section, italic section, and bold section, and adding it to an EditText object. // Get our EditText object. EditText vw = (EditText)findViewById(R.id.text); // Set the EditText s text. vw.setText("Italic, highlighted, bold."); // If this were just a TextView, we could do // vw.setText("Italic, highlighted, bold.", TextView.BufferType.SPANNABLE); // to force it to use Spannable storage so styles can be attached. // Or we could specify that in the XML. // Get the EditText s internal text storage Spannable str = vw.getText(); // Create our span sections, and assign a format to each. str.setSpan(new StyleSpan(android.graphics.Typeface.ITALIC), 0, 7, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); str.setSpan(new BackgroundColorSpan(0xFFFFFF00), 8, 19, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); str.setSpan(new StyleSpan(android.graphics.Typeface.BOLD), 21, str.length() - 1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); List of Files for an Android Application The following list describes the structure and files of an Android application. Many of these files can be built for you (or stubbed out) by the activityCreator.py application shipped in the tools/ menu of the SDK. See Building an Android Sample Application for more information on using activityCreator.py. MyApp/ AndroidManifest.xml (required) Advertises the screens that this application provides, where they can be launched (from the main program menu or elsewhere), any content providers it implements and what kind of data they handle, where the implementation classes are, and other application-wide information. Syntax details for this file are described in AndroidManifest.xml. src//myPackagePath/.../MyClass.java (required) This folder holds all the source code files for your application, inside the appropriate package subfolders. res/ (required) This folder holds all the resources for your application. Resources are external data files or description files that are compiled into your code at build time. Files in different folders are compiled differently, so you must put the proper resource into the proper folder. (See Resources for details.) anim/animation1.xml... (optional) Holds any animation XML description files that the application uses. The format of these files is described in Resources. drawable/some_picture.pngsome_stretchable.9.pngsome_background.xml... (optional) Zero or more files that will be compiled to android.graphics.drawable resources. Files can be image files (png, gif, or other) or XML files describing other graphics such as bitmaps, stretchable bitmaps, or gradients. Supported bitmap file formats are PNG (preferred), JPG, and GIF (discouraged), as well as the custom 9-patch stretchable bitmap format. These formats are described in Resources. layout/screen_1_layout.xml... (optional) Holds all the XML files describing screens or parts of screens. Although you could create a screen in Java, defining them in XML files is typically easier. A layout file is similar in concept to an HTML file that describes the screen layout and components. See Implementing a UI for more information about designing screens, and Layout Resources for the syntax of these files. values/arraysclasses.xmlcolors.xmldimens.xmlstrings.xmlstyles.xmlvalues.xml (optional) XML files describing additional resources such as strings, colors, and styles. The naming, quantity, and number of these files are not enforced--any XML file is compiled, but these are the standard names given to these files. However, the syntax of these files is prescribed by Android, and described in Resources. xml/ (optional) XML files that can be read at run time on the device. raw/ (optional) Any files to be copied directly to the device.
https://w.atwiki.jp/android/pages/151.html
Eclipseプラグインを使ったAndroidアプリケーションの作成 Eclipseプラグインを使わないAndroidアプリケーションの作成 |＃＃＃＃＃＃ここまで翻訳＃＃＃＃＃＃| Implementing Activity Callbacks Opening a New ScreenOpening a Screen Some Intent examples Returning a Result from a Screen Lifetime of the new screen Listening for Button Clicks Configuring General Window Properties Storing and Retrieving StateStoring and Retrieving Larger or More Complex Persistent Data Playing Media Files Listening For and Broadcasting Global Messages, and Setting AlarmsSending the message Receiving the message Other system messages Listening for phone events Setting Alarms Displaying AlertsNormal Alerts AlertDialog Notifications Displaying a Progress Bar Adding Your Application to the Favorites List Adding Items to the Screen MenuAdding Submenus Adding yourself to menus on other applications The offering application Display a Web Page Binding to Data Capture Images from the Phone Camera Handling Expensive Operations in the UI Thread Selecting, Highlighting, or Styling Portions of Text List of Files for an Android Application Eclipseプラグインを使ったAndroidアプリケーションの作成 Android Eclipseプラグインを使用することは、新しいAndroidアプリケーションの作成を始める最も高速で最も簡単な方法です。 プラグインは自動的にあなたのアプリケーションのために正しいプロジェクト構造を生成し、リソースを自動的にコンパイルしてくれます。 Androidアプリケーションの動作原理を理解するために、Androidアプリケーション解体新書を読んでみるのもよいでしょう。 SDKの sample/ フォルダでApiDemosアプリケーションと他のサンプルアプリケーションを見てみることもお勧めします。 最終的にはHello AndroidとNotepadのコードチュートリアルを行うことがEclipseでのAndroid開発を始めるには素敵な方法です。 特にHello Androidチュートリアルを行うことは、Eclipseで新しいAndroidアプリケーションを作成するための優れた導入方法となるでしょう。 Eclipseプラグインを使わないAndroidアプリケーションの作成 |＃＃＃＃＃＃ここまで翻訳＃＃＃＃＃＃| This topic describes the manual steps in creating an Android application. Before reading this, you should read Overview of an Android Application to understand the basics of how an Android application works. You might also want to look at the sample applications that ship with Android under the samples/ directory. Here is a list of the basic steps in building an application. 1. Create your required resource files This includes the AndroidManifest.xml global description file, string files that your application needs, and layout files describing your user interface. A full list of optional and required files and syntax details for each is given in File List for an Android Application. 2. Design your user interface See Implementing a UI for details on elements of the Android screen. 3. Implement your Activity (this page) You will create one class/file for each screen in your application. Screens will inherit from an android.app class, typically android.app.Activity for basic screens, android.app.ListActivity for list screens, or android.app.Dialog for dialog boxes. You will implement the required callbacks that let you draw your screen, query data, and commit changes, and also perform any required tasks such as opening additional screens or reading data from the device. Common tasks, such as opening a new screen or reading data from the device, are described below. The list of files you ll need for your application are described in List of Files for an Android Application. 4. Build and install your package. The Android SDK has some nice tools for generating projects and debugging code. Implementing Activity Callbacks Android calls a number of callbacks to let you draw your screen, store data before pausing, and refresh data after closing. You must implement at least some of these methods. See Lifetime of a Screen to learn when and in what order these methods are called. Here are some of the standard types of screen classes that Android provides android.app.Activity - This is a standard screen, with no specialization. android.app.ListActivity - This is a screen that is used to display a list of something. It hosts a ListView object, and exposes methods to let you identify the selected item, receive callbacks when the selected item changes, and perform other list-related actions. android.app.Dialog - This is a small, popup dialog-style window that isn t intended to remain in the history stack. (It is not resizeable or moveable by the user.) Opening a New Screen Your Activity will often need to open another Activity screen as it progresses. This new screen can be part of the same application or part of another application, the new screen can be floating or full screen, it can return a result, and you can decide whether to close this screen and remove it from the history stack when you are done with it, or to keep the screen open in history. These next sections describe all these options. Floating or full? When you open a new screen you can decide whether to make it transparent or floating, or full-screen. The choice of new screen affects the event sequence of events in the old screen (if the new screen obscures the old screen, a different series of events is called in the old screen). See Lifetime of an Activity for details. Transparent or floating windows are implemented in three standard ways Create an app.Dialog class Create an app.AlertDialog class Set the Theme_Dialog theme attribute to @android style/Theme.Dialog in your AndroidManifest.xml file. For example activity class="AddRssItem" android label="Add an item" android theme="@android style/Theme.Dialog"/ Calling startActivity() or startSubActivity() will open a new screen in whatever way it defines itself (if it uses a floating theme it will be floating, otherwise it will be full screen). Opening a Screen When you want to open a new screen, you can either explicitly specify the activity class to open, or you can let the operating system decide which screen to open, based upon the data and various parameters you pass in. A screen is opened by calling startActivity and passing in an Intent object, which specifies the criteria for the handling screen. To specify a specific screen, call Intent.setClass or setClassName with the exact activity class to open. Otherwise, set a variety of values and data, and let Android decide which screen is appropriate to open. Android will find one or zero Activities that match the specified requirements; it will never open multiple activities for a single request. More information on Intents and how Android resolves them to a specific class is given in the Intent topic. Some Intent examples The following snippet loads the com.google.android.samples.Animation1 class, and passes it some arbitrary data. Intent myIntent = new Intent(); myIntent.component = "com.google.android.samples.Animation1"; myIntent.putExtra("com.google.android.samples.SpecialValue", "Hello, Joe!"); // key/value pair, where key needs current package prefix. startActivity(myIntent); The next snippet requests that a Web page be opened by specifying the VIEW action, and a URI data string starting with "http //" schema Intent myIntent = new Intent("android.intent.action.VIEW", "http //www.google.com"); myIntent.putExtra("com.google.android.samples.SpecialValue", "Hello, Joe!"); // key/value pair, where key needs current package prefix. Here is the intent filter from the AndroidManifest.xml file for com.google.android.browser intent-filter action value="android.intent.action.VIEW" / category value="android.intent.category.DEFAULT" / scheme value="http" / scheme value="https" / scheme value="file" / /intent-filter Android defines a number of standard values, for instance the action constants defined by Intent. You can define custom values, but both the caller and handler must use them. See the intent-filter tag description in AndroidManifest.xml File Details for more information on the manifest syntax for the handling application. Returning a Result from a Screen A window can return a result after it closes. This result will be passed back into the calling Activity s onActivityResult() method, which can supply an integer result code, a string of data, and a Bundle of arbitrary data, along with the request code passed to startSubActivity(). Note that you must call the startSubActivity() method that accepts a request code parameter to get this callback. The following code demonstrates opening a new screen and retrieving a result. // Open the new screen. public void onClick(View v){ // Start the activity whose result we want to retrieve. The // result will come back with request code GET_CODE. Intent intent = new Intent(this, com.example.app.ChooseYourBoxer.class); startSubActivity(intent, CHOOSE_FIGHTER); } // Listen for results. protected void onActivityResult(int requestCode, int resultCode, String data, Bundle extras){ // See which child activity is calling us back. switch (resultCode) { case CHOOSE_FIGHTER // This is the standard resultCode that is sent back if the // activity crashed or didn t doesn t supply an explicit result. if (resultCode == RESULT_CANCELED){ myMessageboxFunction("Fight cancelled"); } else { myFightFunction(data, extras); } default break; } } // Class SentResult // Temporary screen to let the user choose something. private OnClickListener mLincolnListener = new OnClickListener(){ public void onClick(View v) { Bundle stats = new Bundle(); stats.putString("height","6\ 4\""); stats.putString("weight", "190 lbs"); stats.putString("reach", "74\""); setResult(RESULT_OK, "Lincoln", stats); finish(); } }; private OnClickListener mWashingtonListener = new OnClickListener() { public void onClick(View v){ Bundle stats = new Bundle(); stats.putString("height","6\ 2\""); stats.putString("weight", "190 lbs"); stats.putString("reach", "73\""); setResult(RESULT_OK, "Washington", Bundle); finish(); } }; Lifetime of the new screen An activity can remove itself from the history stack by calling Activity.finish() on itself, or the activity that opened the screen can call Activity.finishSubActivity() on any screens that it opens to close them. Listening for Button Clicks Button click and other UI event capturing are covered in Listening for UI Notifications on the UI Design page. Configuring General Window Properties You can set a number of general window properties, such as whether to display a title, whether the window is floating, and whether it displays an icon, by calling methods on the Window member of the underlying View object for the window. Examples include calling getWindow().requestFeature() (or the convenience method requestWindowFeature(some_feature)) to hide the title. Here is an example of hiding the title bar //Hide the title bar requestWindowFeature(Window.FEATURE_NO_TITLE); Storing and Retrieving State If your application is dumped from memory because of space concerns, it will lose all user interface state information such as checkbox state and text box values as well as class member values. Android calls Activity.onFreeze before it pauses the application. This method hands in a Bundle that can be used to store name/value pairs that will persist and be handed back to the application even if it is dropped from memory. Android will pass this Bundle back to you when it calls onCreate(). This Bundle only exists while the application is still in the history stack (whether or not it has been removed from memory) and will be lost when the application is finalized. See the topics for onFreeze(Bundle) and onCreate(Bundle) for examples of storing and retrieving state. Read more about the life cycle of an application in Lifetime of an Activity. Storing and Retrieving Larger or More Complex Persistent Data Your application can store files or complex collection objects, and reserve them for private use by itself or other activities in the application, or it can expose its data to all other applications on the device. See Storing, Retrieving, and Exposing Data to learn how to store and retrieve private data, how to store and retrieve common data from the device, and how to expose your private data to other applications. Playing Media Files Please see the document Android Media APIs for more details. Listening For and Broadcasting Global Messages, and Setting Alarms You can create a listening class that can be notified or even instantiated whenever a specific type of system message is sent. The listening classes, called intent receivers, extend IntentReceiver. If you want Android to instantiate the object whenever an appropriate intent notification is sent, define the receiver with a receiver element in the AndroidManifext.xml file. If the caller is expected to instantiate the object in preparation to receive a message, this is not required. The receiver will get a call to their IntentReceiver.onReceiveIntent() method. A receiver can define an intent-filter tag that describes the types of messages it will receive. Just as Android s IntentResolver will look for appropriate Activity matches for a startActivity() call, it will look for any matching Receivers (but it will send the message to all matching receiver, not the "best" match). To send a notification, the caller creates an Intent object and calls Activity.broadcastIntent() with that Intent. Multiple recipients can receive the same message. You can broadcast an Intent message to an intent receiver in any application, not only your own. If the receiving class is not registered using receiver in its manifest, you can dynamically instantiate and register a receiver by calling Context.registerReceiver(). Receivers can include intent filters to specify what kinds of intents they are listening for. Alternatively, if you expect a single known caller to contact a single known receiver, the receiver does not specify an intent filter, and the caller specifies the receiver s class name in the Intent by calling Intent.setClassName() with the recipient s class name. The recipient receives a Context object that refers to its own package, not to the package of the sender. Note If a receiver or broadcaster enforces permissions, your application might need to request permission to send or receive messages from that object. You can request permission by using the uses-permission tag in the manifest. Here is a code snippet of a sender and receiver. This example does not demonstrate registering receivers dynamically. For a full code example, see the AlarmService class in the ApiDemos project. Sending the message // We are sending this to a specific recipient, so we will // only specify the recipient class name. Intent intent = new Intent(this, AlarmReceiver.class); intent.putExtra("message","Wake up."); broadcastIntent(intent); Receiving the message Receiver AndroidManifest.xml (because there is no intent filter child, this class will only receive a broadcast when the receiver class is specified by name, as is done in this example) receiver class=".AlarmReceiver" / Receiver Java code public class AlarmReceiver extends IntentReceiver{ // Display an alert that we ve received a message. @Override public void onReceiveIntent(Context context, Intent intent){ // Send a text notification to the screen. NotificationManager nm = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE); nm.notifyWithText(R.id.alarm, "Alarm!!!", NotificationManager.LENGTH_SHORT, null); } } Other system messages You can listen for other system messages sent by Android as well, such as USB connection/removal messages, SMS arrival messages, and timezone changes. See Intent for a list of broadcast messages to listen for. Messages are marked "Broadcast Action" in the documentation. Listening for phone events The telephony package overview page describes how to register to listen for phone events. Setting Alarms Android provides an AlarmManager service that will let you specify an Intent to send at a designated time. This intent is typically used to start an application at a preset time. (Note If you want to send a notification to a sleeping or running application, use Handler instead.) Displaying Alerts There are two major kinds of alerts that you may display to the user (1) Normal alerts are displayed in response to a user action, such as trying to perform an action that is not allowed. (2) Out-of-band alerts, called notifications, are displayed as a result of something happening in the background, such as the user receiving new e-mail. Normal Alerts Android provides a number of ways for you to show popup notifications to your user as they interact with your application. Class Description app.AlertDialogorContext.showAlert() A popup alert dialog with two buttons (typically OK and Cancel) that take callback handlers. It can be created separately, or launched using the Application helper method Context.showAlert(). See the section after this table for more details. ProgressDialog A dialog box used to indicate progress of an operation with a known progress value or an indeterminate length (setProgress(bool)). See Views Progress Bar in ApiDemos for examples. Activity By setting the theme of an activity to android theme="android style/Theme.Dialog", your activity will take on the appearance of a normal dialog, floating on top of whatever was underneath it. You usually set the theme through the android theme attribute in your AndroidManifest.xml. The advantage of this over Dialog and AlertDialog is that Application has a much better managed lifecycle than dialogs if a dialog goes to the background and is killed, you cannot recapture state, whereas Application exposes a Bundle of saved values in onCreate() to help you maintain state. AlertDialog This is a basic warning dialog box that lets you configure a message, button text, and callback. You can create one by calling the Application helper method Context.showAlert(), as shown here. private Handler mHandler = new Handler() { public void handleMessage(Message msg) { switch (msg.what) { case ACCEPT_CALL answer(msg.obj); break; case BOUNCE_TO_VOICEMAIL voicemail(msg.obj); break; } } }; private void IncomingMotherInlawCall(Connection c) { String Text; // "Answer" callback. Message acceptMsg = Message.obtain(); acceptMsg.target = mHandler; acceptMsg.what = ACCEPT_CALL; acceptMsg.obj = c.getCall(); // "Cancel" callback. Message rejectMsg = Message.obtain(); rejectMsg.target = mHandler; rejectMsg.what = BOUNCE_TO_VOICEMAIL; rejectMsg.obj = c.getCall(); showAlert(null, "Phyllis is calling", "Answer", acceptMsg, true, rejectMsg); } Notifications Out-of-band alerts should always be displayed using the NotificationManager, which allows you to tell the user about something they may be interested in without disrupting what they are currently doing. A notification can be anything from a brief pop-up box informing the user of the new information, through displaying a persistent icon in the status bar, to vibrating, playing sounds, or flashing lights to get the user s attention. In all cases, the user must explicitly shift their focus to the notification before they can interact with it. The following code demonstrates using NotificationManager to display a basic text popup when a new SMS message arrives in a listening service, and provides the current message count. You can see several more examples in the ApiDemos application, under app/ (named notification*.java). static void setNewMessageIndicator(Context context, int messageCount){ // Get the static global NotificationManager object. NotificationManager nm = NotificationManager.getDefault(); // If we re being called because a new message has been received, // then display an icon and a count. Otherwise, delete the persistent // message. if (messageCount 0) { nm.notifyWithText(myApp.NOTIFICATION_GUID, // ID for this notification. messageCount + " new message" + messageCount 1 ? "s" "", // Text to display. NotificationManager.LENGTH_SHORT); // Show it for a short time only. } } To display a notification in the status bar and have it launch an intent when the user selects it (such as the new text message notification does), call NotificationManager.notify(), and pass in vibration patterns, status bar icons, or Intents to associate with the notification. Displaying a Progress Bar An activity can display a progress bar to notify the user that something is happening. To display a progress bar in a screen, call Activity.requestWindowFeature(Window.FEATURE_PROGRESS). To set the value of the progress bar, call Activity.getWindow().setFeatureInt(Window.FEATURE_PROGRESS, level). Progress bar values are from 0 to 9,999, or set the value to 10,000 to make the progress bar invisible. You can also use the ProgressDialog class, which enables a dialog box with an embedded progress bar to send a "I m working on it" notification to the user. Adding Your Application to the Favorites List You can t. Only a user can add an application to the Favorites list. Adding Items to the Screen Menu Every Android screen has a default menu with default options, such as adding the activity to the favorites menu. You can add your own menu entries to the default menu options by implementing Activity.onCreateOptionsMenu or Activity.onPrepareOptionsMenu(), and adding Item objects to the Menu passed in. To handle clicks implement Activity.onOptionsItemSelected() to handle the click in your Activity class. You may also pass the Item object a handler class that implements the Runnable class (a handler) but this is less efficient and discouraged. An application receives a callback at startup time to enable it to populate its menu. Additionally, it receives callbacks each time the user displays the options menu to let you perform some contextual modifications on the menu. To populate the menu on startup, override Activity.onCreateOptionsMenu; to populate it when the menu is called (somewhat less efficient), you can override Activity.onPrepareOptionsMenu(). Each Activity has its own menu list. Menu items are displayed in the order added, though you can group them as described in the Menu.add documentation. The following code snippet adds three items to the default menu options and handles them through the overridden Activity.onOptionsItemSelected() method. You can show or hide menu items by calling setItemShown() or setGroupShown(). // Called only the first time the options menu is displayed. // Create the menu entries. // Menu adds items in the order shown. @Override public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu); // Parameters for menu.add are // group -- Not used here. // id -- Used only when you want to handle and identify the click yourself. // title menu.add(0, 0, "Zoom"); menu.add(0, 1, "Settings"); menu.add(0, 2, "Other"); return true; } // Activity callback that lets your handle the selection in the class. // Return true to indicate that you ve got it, false to indicate // that it should be handled by a declared handler object for that // item (handler objects are discouraged for reasons of efficiency). @Override public boolean onOptionsItemSelected(Menu.Item item){ switch (item.getId()) { case 0 showAlert("Menu Item Clicked", "Zoom", "ok", null, false, null); return true; case 1 showAlert("Menu Item Clicked", "Settings", "ok", null, false, null); return true; case 2 showAlert("Menu Item Clicked", "Other", "ok", null, false, null); return true; } return false; } You can add key shortcuts by calling the Item.setAlphabeticShortcut() or Item.setNumericShortcut() methods, as demonstrated here to add a "C" shortcut to a menu item thisItem.setAlphabeticShortcut(0, c ); Adding Submenus Add a submenu by calling Menu.addSubMenu(), which returns a SubMenu object. You can then add additional items to this menu. Menus can only be one level deep, and you can customize the appearance of the submenu menu item. @Override public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu); // Parameters for menu.add are // group -- Not used here. // id -- Used only when you want to handle and identify the click yourself. // title menu.add(0, 0, "Send message"); menu.add(0, 1, "Settings"); menu.add(0, 2, "Local handler"); menu.add(0, 3, "Launch contact picker"); // Add our submenu. SubMenu sub = menu.addSubMenu(1, 4, "Days of the week"); sub.add(0, 5, "Monday"); sub.add(0, 6, "Tuesday"); sub.add(0, 7, "Wednesday"); sub.add(0, 8, "Thursday"); sub.add(0, 9, "Friday"); sub.add(0, 10, "Saturday"); sub.add(0, 11, "Sunday"); return true; } Adding yourself to menus on other applications You can also advertise your Activity s services so that other Activities can add your activity to their own option menu. For example, suppose you implement a new image handling tool that shrinks an image to a smaller size and you would like to offer this as a menu option to any other Activity that handles pictures. To do this, you would exposes your capabilities inside an intent filter in your manifest. If another application that handles photos asks Android for any Activities that can perform actions on pictures, Android will perform intent resolution, find your Activity, and add it to the other Activity s options menu. The offering application The application offering the service must include an intent-filter element in the manifest, inside the activity tag of the offering Activity. The intent filter includes all the details describing what it can do, such as a type element that describes the MIME type of data that it can handle, a custom action value that describes what your handling application can do (this is so that when it receives the Intent on opening it knows what it is expected to do), and most important, include a category filter with the value android.intent.category.ALTERNATIVE and/or android.intent.category.SELECTED_ALTERNATIVE (SELECTED_ALTERNATIVE is used to handle only the currently selected element on the screen, rather than the whole Activity intent. Here s an example of a snip of a manifest that advertises picture shrinking technology for both selected items and the whole screen. activity class="PictureShrink" !-- Handling class -- intent-filter label="Shrink picture" !-- Menu label to display -- action value="com.example.sampleapp.SHRINK_IT" / type value="image/*" / !-- MIME type for generic images -- category value="android.intent.category.ALTERNATIVE " / category value="android.intent.category.SELECTED_ALTERNATIVE" / /intent-filter /activity The menu-displaying application An application that wants to display a menu that includes any additional external services must, first of all, handle its menu creation callback. As part of that callback it creates an intent with the category Intent.ALTERNATIVE_CATEGORY and/or Intent.SELECTED_ALTERNATIVE, the MIME type currently selected, and any other requirements, the same way as it would satisfy an intent filter to open a new Activity. It then calls menu.addIntentOptions() to have Android search for and add any services meeting those requirements. It can optionally add additional custom menu items of its own. You should implement SELECTED_ALTERNATIVE in onPrepareOptionsMenu() rather than onCreateOptionsMenu(), because the user s selection can change after the application is launched. Here s a code snippet demonstrating how a picture application would search for additional services to display on its menu. @Override public boolean onCreateOptionsMenu(Menu menu){ super.onCreateOptionsMenu(menu); // Create an Intent that describes the requirements to fulfill to be included // in our menu. The offering app must include a category value of Intent.ALTERNATIVE_CATEGORY. Intent intent = new Intent(null, getIntent().getData()); intent.addCategory(Intent.ALTERNATIVE_CATEGORY); // Search for, and populate the menu with, acceptable offering applications. menu.addIntentOptions( 0, // Group 0, // Any unique IDs we might care to add. MySampleClass.class.getName(), // Name of the class displaying the menu--here, its this class. null, // No specifics. intent, // Previously created intent that describes our requirements. 0, // No flags. null); // No specifics. return true; } Display a Web Page Use the webkit.WebView object. Binding to Data You can bind a ListView to a set of underlying data by using a shim class called ListAdapter (or a subclass). ListAdapter subclasses bind to a variety of data sources, and expose a common set of methods such as getItem() and getView(), and uses them to pick View items to display in its list. You can extend ListAdapter and override getView() to create your own custom list items. There are essentially only two steps you need to perform to bind to data 1. Create a ListAdapter object and specify its data source 2. Give the ListAdapter to your ListView object. That s it! Here s an example of binding a ListActivity screen to the results from a cursor query. (Note that the setListAdapter() method shown is a convenience method that gets the page s ListView object and calls setAdapter() on it.) // Run a query and get a Cursor pointing to the results. Cursor c = People.query(this.getContentResolver(), null); startManagingCursor(c); // Create the ListAdapter. A SimpleCursorAdapter lets you specify two interesting things // an XML template for your list item, and // The column to map to a specific item, by ID, in your template. ListAdapter adapter = new SimpleCursorAdapter(this, android.R.layout.simple_list_item_1, // Use a template that displays a text view c, // Give the cursor to the list adapter new String[] {People.NAME} , // Map the NAME column in the people database to... new String[] {"text1"}); // The "text1" view defined in the XML template setListAdapter(adapter); See view/List4 in the ApiDemos project for an example of extending ListAdapter for a new data type. Capture Images from the Phone Camera You can hook into the device s camera onto your own Canvas object by using the CameraDevice class. See that class s documentation, and the ApiDemos project s Camera Preview application (Graphics/Camera Preview) for example code. Handling Expensive Operations in the UI Thread Avoid performing long-running operations (such as network I/O) directly in the UI thread — the main thread of an application where the UI is run — or your application may be blocked and become unresponsive. Here is a brief summary of the recommended approach for handling expensive operations 1. Create a Handler object in your UI thread 2. Spawn off worker threads to perform any required expensive operations 3. Post results from a worker thread back to the UI thread s handler either through a Runnable or a Message 4. Update the views on the UI thread as needed The following outline illustrates a typical implementation public class MyActivity extends Activity { [ . . . ] // Need handler for callbacks to the UI thread final Handler mHandler = new Handler(); // Create runnable for posting final Runnable mUpdateResults = new Runnable() { @Override public void run() { updateResultsInUi(); } }; @Override protected void onCreate(Bundle icicle) { super.onCreate(icicle); [ . . . ] } protected void startLongRunningOperation() { // Fire off a thread to do some work that we shouldn t do directly in the UI thread Thread t = new Thread() { public void run() { mResults = doSomethingExpensive(); mHandler.post(mUpdateResults); } }; t.start(); } private void updateResultsInUi() { // Back in the UI thread -- update our UI elements based on the data in mResults [ . . . ] } } For further discussions on this topic, see Developing Responsive Applications and the Handler documentation. Selecting, Highlighting, or Styling Portions of Text You can highlight or style the formatting of strings or substrings of text in a TextView object. There are two ways to do this If you use a string resource, you can add some simple styling, such as bold or italic using HTML notation. So, for example, in res/values/strings.xml you could declare this resource string id="@+id/styled_welcome_message" We are b i so /i /b glad to see you. /string /resources To style text on the fly, or to add highlighting or more complex styling, you must use the Spannable object as described next. To style text on the fly, you must make sure the TextView is using Spannable storage for the text (this will always be true if the TextView is an EditText), retrieve its text with getText(), and call setSpan(Object, int, int, int), passing in a new style class from the android.text.style package and the selection range. The following code snippet demonstrates creating a string with a highlighted section, italic section, and bold section, and adding it to an EditText object. // Get our EditText object. EditText vw = (EditText)findViewById(R.id.text); // Set the EditText s text. vw.setText("Italic, highlighted, bold."); // If this were just a TextView, we could do // vw.setText("Italic, highlighted, bold.", TextView.BufferType.SPANNABLE); // to force it to use Spannable storage so styles can be attached. // Or we could specify that in the XML. // Get the EditText s internal text storage Spannable str = vw.getText(); // Create our span sections, and assign a format to each. str.setSpan(new StyleSpan(android.graphics.Typeface.ITALIC), 0, 7, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); str.setSpan(new BackgroundColorSpan(0xFFFFFF00), 8, 19, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); str.setSpan(new StyleSpan(android.graphics.Typeface.BOLD), 21, str.length() - 1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); List of Files for an Android Application The following list describes the structure and files of an Android application. Many of these files can be built for you (or stubbed out) by the activityCreator.py application shipped in the tools/ menu of the SDK. See Building an Android Sample Application for more information on using activityCreator.py. MyApp/ AndroidManifest.xml (required) Advertises the screens that this application provides, where they can be launched (from the main program menu or elsewhere), any content providers it implements and what kind of data they handle, where the implementation classes are, and other application-wide information. Syntax details for this file are described in AndroidManifest.xml. src//myPackagePath/.../MyClass.java (required) This folder holds all the source code files for your application, inside the appropriate package subfolders. res/ (required) This folder holds all the resources for your application. Resources are external data files or description files that are compiled into your code at build time. Files in different folders are compiled differently, so you must put the proper resource into the proper folder. (See Resources for details.) anim/animation1.xml... (optional) Holds any animation XML description files that the application uses. The format of these files is described in Resources. drawable/some_picture.pngsome_stretchable.9.pngsome_background.xml... (optional) Zero or more files that will be compiled to android.graphics.drawable resources. Files can be image files (png, gif, or other) or XML files describing other graphics such as bitmaps, stretchable bitmaps, or gradients. Supported bitmap file formats are PNG (preferred), JPG, and GIF (discouraged), as well as the custom 9-patch stretchable bitmap format. These formats are described in Resources. layout/screen_1_layout.xml... (optional) Holds all the XML files describing screens or parts of screens. Although you could create a screen in Java, defining them in XML files is typically easier. A layout file is similar in concept to an HTML file that describes the screen layout and components. See Implementing a UI for more information about designing screens, and Layout Resources for the syntax of these files. values/arraysclasses.xmlcolors.xmldimens.xmlstrings.xmlstyles.xmlvalues.xml (optional) XML files describing additional resources such as strings, colors, and styles. The naming, quantity, and number of these files are not enforced--any XML file is compiled, but these are the standard names given to these files. However, the syntax of these files is prescribed by Android, and described in Resources. xml/ (optional) XML files that can be read at run time on the device. raw/ (optional) Any files to be copied directly to the device.
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コメント すべてのコメントを見る 選択肢 投票 良い (0) どちらかというと良い (0) 普通 (0) どちらかというと悪い (0) 悪い (0) アプリ関連 更新情報 オクトバ様 おすすめアプリ比較 オクトバ セール情報 「ADV 最悪なる災厄人間に捧ぐ」が大幅割引中！＆「戦乱のサムライキングダム」が8周年記念開催中！ オクトバ、セール・お買い得情報です。 今日は「ADV 最悪なる災厄人間に捧ぐ」「ソードナイツ」「戦乱のサムライキングダム」のセール・キャンペーン情報をお伝えします。 意外な掘り出し物が見つかるかも！？ 【お願い】 デベロ [ #8230;] The post セール情報 「ADV 最悪なる災厄人間に捧ぐ」が大幅割引中！＆「戦乱のサムライキングダム」が8周年記念開催中！ appeared first on おすすめアプリ比較 オクトバ . セール情報 「Rush Rally Origins」が約半額！＆「にゃんこ大戦争」でQ周年記念ガチャ「極選抜祭」開催！ オクトバ、セール・お買い得情報です。 今日は「Rush Rally Origins」「ソードナイツ」「にゃんこ大戦争」のセール・キャンペーン情報をお伝えします。 意外な掘り出し物が見つかるかも！？ 【お願い】 デベロッパ [ #8230;] The post セール情報 「Rush Rally Origins」が約半額！＆「にゃんこ大戦争」でQ周年記念ガチャ「極選抜祭」開催！ appeared first on おすすめアプリ比較 オクトバ . 先週のニュースまとめ 「Xperia PRO-I」が12月発売！ホームアプリ「SNS launcher」登場！【2021年10月23日 ～ 2021年10月29日】 ソニーが「Xperia PRO-I」を12月15日に発売します。また、XperiaでVR体験できるゴーグル「Xperia View」が11月19日に発売となっています。ソフトバンクからは法人向けの5Gスマートフォン「DI [ #8230;] The post 先週のニュースまとめ 「Xperia PRO-I」が12月発売！ホームアプリ「SNS launcher」登場！【2021年10月23日 ～ 2021年10月29日】 appeared first on おすすめアプリ比較 オクトバ . セール情報 謎解きアドベンチャー「The Lost Treasure」がセール中！＆「ぷよぷよ!!クエスト」で「テクニカルクエスト アルガーの挑戦状」開催！ オクトバ、セール・お買い得情報です。 今日は「The Lost Treasure」「モニュメントバレー」「ぷよぷよ!!クエスト」のセール・キャンペーン情報をお伝えします。 意外な掘り出し物が見つかるかも！？ 【お願い】 [ #8230;] The post セール情報 謎解きアドベンチャー「The Lost Treasure」がセール中！＆「ぷよぷよ!!クエスト」で「テクニカルクエスト アルガーの挑戦状」開催！ appeared first on おすすめアプリ比較 オクトバ . 先週のニュースまとめ 5Gタブレット「Lenovo TAB6」登場。「HUAWEI MatePad 11」に新色！【2021年10月16日 ～ 2021年10月22日】 ソフトバンクからレノボ・ジャパンの5Gタブレット「Lenovo TAB6」が発売となっています。また、ファーウェイのタブレット「HUAWEI MatePad 11」に新色の「マットグレー」が登場し、カラーバリエーションが [ #8230;] The post 先週のニュースまとめ 5Gタブレット「Lenovo TAB6」登場。「HUAWEI MatePad 11」に新色！【2021年10月16日 ～ 2021年10月22日】 appeared first on おすすめアプリ比較 オクトバ . セール情報 お弁当パズルゲーム「隠弁当 -inbento-」が約半額！＆「クッキングママ お料理しましょ！」でクリスマスイベントが12月1日より開催！ オクトバ、セール・お買い得情報です。 今日は「隠弁当 -inbento-」「7Days」「クッキングママ お料理しましょ！」のセール・キャンペーン情報をお伝えします。 意外な掘り出し物が見つかるかも！？ 【お願い】 デベ [ #8230;] The post セール情報 お弁当パズルゲーム「隠弁当 -inbento-」が約半額！＆「クッキングママ お料理しましょ！」でクリスマスイベントが12月1日より開催！ appeared first on おすすめアプリ比較 オクトバ . セール情報 「Kingdom Rush オリジンズ」がセール中！＆カプコンの「スヌーピー」アプリ3タイトル合同キャンペーン開催！ オクトバ、セール・お買い得情報です。 今日は「Kingdom Rush オリジンズ」「キングダムラッシュの復讐」「スヌーピードロップス」のセール・キャンペーン情報をお伝えします。 意外な掘り出し物が見つかるかも！？ 【 [ #8230;] The post セール情報 「Kingdom Rush オリジンズ」がセール中！＆カプコンの「スヌーピー」アプリ3タイトル合同キャンペーン開催！ appeared first on おすすめアプリ比較 オクトバ . セール情報 ノベルゲーム「アンダーワールドオフィス」がセール中！＆「妖怪三国志 国盗りウォーズ」で400万DL記念ステップアップガシャ！ オクトバ、セール・お買い得情報です。 今日は「アンダーワールドオフィス」「She Sees Red」「妖怪三国志 国盗りウォーズ」のセール・キャンペーン情報をお伝えします。 意外な掘り出し物が見つかるかも！？ 【お願い】 [ #8230;] The post セール情報 ノベルゲーム「アンダーワールドオフィス」がセール中！＆「妖怪三国志 国盗りウォーズ」で400万DL記念ステップアップガシャ！ appeared first on おすすめアプリ比較 オクトバ . セール情報 「すべてのビデオオーディオコンバータPRO」が110円！＆新作パズルアプリ「バブルンのパズルブラスト！」リリース！ オクトバ、セール・お買い得情報です。 今日は「すべてのビデオオーディオコンバータPRO」「ReFactory」「バブルンのパズルブラスト！」のセール・キャンペーン情報をお伝えします。 意外な掘り出し物が見つかるかも！？ [ #8230;] The post セール情報 「すべてのビデオオーディオコンバータPRO」が110円！＆新作パズルアプリ「バブルンのパズルブラスト！」リリース！ appeared first on おすすめアプリ比較 オクトバ . セール情報 「Epic Heroes」が無料！＆「SHOW BY ROCK!! Fes A Live」でリリース609日記念キャンペーン！ オクトバ、セール・お買い得情報です。 今日は「Epic Heroes」「Dungon Shooer」「SHOW BY ROCK!! Fes A Live」のセール・キャンペーン情報をお伝えします。 意外な掘り出し物が見つ [ #8230;] The post セール情報 「Epic Heroes」が無料！＆「SHOW BY ROCK!! Fes A Live」でリリース609日記念キャンペーン！ appeared first on おすすめアプリ比較 オクトバ . 引用元 ： http //octoba.net/feed Android（アンドロイド）アプリ・スマートフォン情報サイト｜アンドロック様 アンドロック 無料LINEスタンプ＆隠しLINEスタンプまとめ！無料で使えるラインスタンプ盛りだくさん！【iPhone/Android共通】12/7更新 無料でゲットできちゃうLINEスタンプを一挙大公開！ カワイイ・カッコイイ・面白い、様々なLINEスタンプが全て無料でダウンロードできます！ しかも、スタンプショップには出てこない隠し無料LINEスタンプも大量公開！超激 [ #8230;] プロスピA 攻略情報まとめ｜プロ野球スピリッツA攻略 プロスピA（プロ野球スピリッツA）の攻略情報をまとめたページです。 基本的な使い方や機能、イベント攻略、おすすめ情報などなど！プロスピAをプレイしている人は是非チェックしてみてください！！ [Adsense] Check [ #8230;] 【プロスピA】OB第２弾(2021年)の評価ランキング！火の玉ストレート藤川球児降臨！【Sランク評価】 2021年度シリーズ2OB第2弾の評価ランキングを紹介します。 前回登場したOBダルビッシュセレクションも超豪華ラインナップでしたが、今回は火の玉ストレート藤川球児が登場します！！ 火の玉ストレート藤川球児は既にTwit [ #8230;] 【プロスピA】OBダルビッシュセレクション2021の選手評価ランキング！ 昨年のセレクション第2弾では、ダルビッシュ有が選ぶキャリアハイベストナインと称してダルビッシュセレクションが開催されましたが、今年はOBダルビッシュセレクションが開催されます！！ さらに、OBダルビッシュ有の登場もあると [ #8230;] 【プロスピA】2021シリーズ2 一塁手の評価ランキング！【Sランク評価】 2021年度シリーズ2の一塁手の評価ランキングを紹介します。 先日アニバーサリー第1弾と第2弾が公開されてばかりなので、ここでエナジーを消費するユーザーはほとんどいないと思いますが、獲得した際には誰が当たり選手なのかチェ [ #8230;] 東京卍リベンジャーズが無料で読めるマンガアプリまとめ 東京卍リベンジャーズが無料で読めるマンガアプリ一覧です。 本記事で紹介するマンガアプリ・マンガサイトなら、すべて合法的に無料で東京卍リベンジャーズを読む事が出来ます。 期間限定のキャンペーンだったり、読める話数が限定され [ #8230;] 【プロスピA】2021アニバーサリー第２弾の選手評価ランキング！確定で獲得したい選手は？ 2021年度アニバーサリー第2弾の選手評価ランキングを紹介します。 アニバーサリー第1弾に続き第2弾もかなり素晴らしいラインナップ！ポジション最強選手も多数！ 確定では誰を取るべきなのかチェックしていきましょう。 [Ad [ #8230;] LINEグループを作る方法＆複数人トークを作成する方法！基礎知識を解説！ LINEでグループを作る方法と、複数人トークをする方法を紹介します。 LINEグループと複数人トークについての基礎知識です。 2021年9月更新：グループの自動承認について LINEグループとは？複数人トークとは？ LI [ #8230;] 【プロスピA】2021アニバーサリー第１弾の選手評価ランキング！確定で獲得したい選手は？ 2021年度アニバーサリー第1弾の選手評価ランキングを紹介します。 今年のアニバーサリーも非常に豪華なラインナップ！アニバーサリープレイヤー確定スカウトでは一体誰を獲得すべきなのかチェックしていきましょう！ [Adsen [ #8230;] 【プロスピA】2021S1左翼手の評価ランキング！【Sランク評価】 2021年度シリーズ2の左翼手の評価ランキングを紹介します。 左翼手はシリーズ1とラインナップはほとんど同じですが、それぞれ能力に変化があるようです。上がっている選手もいれば下がっている選手もいますね。 評価をチェックし [ #8230;] 引用元 ： http //androck.jp/feed/ アンドロイドアプリのポータルサイトappliko(アプリコ)様 feedreader プラグインエラー RSSを入力してください。 " width="650" height="350" frameborder="0" scrolling="no" /iframe } コメント すべてのコメントを見る 選択肢 投票 良い (0) どちらかというと良い (0) 普通 (0) どちらかというと悪い (0) 悪い (0) アプリ関連 更新情報 オクトバ様 おすすめアプリ比較 オクトバ セール情報 「ADV 最悪なる災厄人間に捧ぐ」が大幅割引中！＆「戦乱のサムライキングダム」が8周年記念開催中！ オクトバ、セール・お買い得情報です。 今日は「ADV 最悪なる災厄人間に捧ぐ」「ソードナイツ」「戦乱のサムライキングダム」のセール・キャンペーン情報をお伝えします。 意外な掘り出し物が見つかるかも！？ 【お願い】 デベロ [ #8230;] The post セール情報 「ADV 最悪なる災厄人間に捧ぐ」が大幅割引中！＆「戦乱のサムライキングダム」が8周年記念開催中！ appeared first on おすすめアプリ比較 オクトバ . セール情報 「Rush Rally Origins」が約半額！＆「にゃんこ大戦争」でQ周年記念ガチャ「極選抜祭」開催！ オクトバ、セール・お買い得情報です。 今日は「Rush Rally Origins」「ソードナイツ」「にゃんこ大戦争」のセール・キャンペーン情報をお伝えします。 意外な掘り出し物が見つかるかも！？ 【お願い】 デベロッパ [ #8230;] The post セール情報 「Rush Rally Origins」が約半額！＆「にゃんこ大戦争」でQ周年記念ガチャ「極選抜祭」開催！ appeared first on おすすめアプリ比較 オクトバ . 先週のニュースまとめ 「Xperia PRO-I」が12月発売！ホームアプリ「SNS launcher」登場！【2021年10月23日 ～ 2021年10月29日】 ソニーが「Xperia PRO-I」を12月15日に発売します。また、XperiaでVR体験できるゴーグル「Xperia View」が11月19日に発売となっています。ソフトバンクからは法人向けの5Gスマートフォン「DI [ #8230;] The post 先週のニュースまとめ 「Xperia PRO-I」が12月発売！ホームアプリ「SNS launcher」登場！【2021年10月23日 ～ 2021年10月29日】 appeared first on おすすめアプリ比較 オクトバ . セール情報 謎解きアドベンチャー「The Lost Treasure」がセール中！＆「ぷよぷよ!!クエスト」で「テクニカルクエスト アルガーの挑戦状」開催！ オクトバ、セール・お買い得情報です。 今日は「The Lost Treasure」「モニュメントバレー」「ぷよぷよ!!クエスト」のセール・キャンペーン情報をお伝えします。 意外な掘り出し物が見つかるかも！？ 【お願い】 [ #8230;] The post セール情報 謎解きアドベンチャー「The Lost Treasure」がセール中！＆「ぷよぷよ!!クエスト」で「テクニカルクエスト アルガーの挑戦状」開催！ appeared first on おすすめアプリ比較 オクトバ . 先週のニュースまとめ 5Gタブレット「Lenovo TAB6」登場。「HUAWEI MatePad 11」に新色！【2021年10月16日 ～ 2021年10月22日】 ソフトバンクからレノボ・ジャパンの5Gタブレット「Lenovo TAB6」が発売となっています。また、ファーウェイのタブレット「HUAWEI MatePad 11」に新色の「マットグレー」が登場し、カラーバリエーションが [ #8230;] The post 先週のニュースまとめ 5Gタブレット「Lenovo TAB6」登場。「HUAWEI MatePad 11」に新色！【2021年10月16日 ～ 2021年10月22日】 appeared first on おすすめアプリ比較 オクトバ . セール情報 お弁当パズルゲーム「隠弁当 -inbento-」が約半額！＆「クッキングママ お料理しましょ！」でクリスマスイベントが12月1日より開催！ オクトバ、セール・お買い得情報です。 今日は「隠弁当 -inbento-」「7Days」「クッキングママ お料理しましょ！」のセール・キャンペーン情報をお伝えします。 意外な掘り出し物が見つかるかも！？ 【お願い】 デベ [ #8230;] The post セール情報 お弁当パズルゲーム「隠弁当 -inbento-」が約半額！＆「クッキングママ お料理しましょ！」でクリスマスイベントが12月1日より開催！ appeared first on おすすめアプリ比較 オクトバ . セール情報 「Kingdom Rush オリジンズ」がセール中！＆カプコンの「スヌーピー」アプリ3タイトル合同キャンペーン開催！ オクトバ、セール・お買い得情報です。 今日は「Kingdom Rush オリジンズ」「キングダムラッシュの復讐」「スヌーピードロップス」のセール・キャンペーン情報をお伝えします。 意外な掘り出し物が見つかるかも！？ 【 [ #8230;] The post セール情報 「Kingdom Rush オリジンズ」がセール中！＆カプコンの「スヌーピー」アプリ3タイトル合同キャンペーン開催！ appeared first on おすすめアプリ比較 オクトバ . セール情報 ノベルゲーム「アンダーワールドオフィス」がセール中！＆「妖怪三国志 国盗りウォーズ」で400万DL記念ステップアップガシャ！ オクトバ、セール・お買い得情報です。 今日は「アンダーワールドオフィス」「She Sees Red」「妖怪三国志 国盗りウォーズ」のセール・キャンペーン情報をお伝えします。 意外な掘り出し物が見つかるかも！？ 【お願い】 [ #8230;] The post セール情報 ノベルゲーム「アンダーワールドオフィス」がセール中！＆「妖怪三国志 国盗りウォーズ」で400万DL記念ステップアップガシャ！ appeared first on おすすめアプリ比較 オクトバ . セール情報 「すべてのビデオオーディオコンバータPRO」が110円！＆新作パズルアプリ「バブルンのパズルブラスト！」リリース！ オクトバ、セール・お買い得情報です。 今日は「すべてのビデオオーディオコンバータPRO」「ReFactory」「バブルンのパズルブラスト！」のセール・キャンペーン情報をお伝えします。 意外な掘り出し物が見つかるかも！？ [ #8230;] The post セール情報 「すべてのビデオオーディオコンバータPRO」が110円！＆新作パズルアプリ「バブルンのパズルブラスト！」リリース！ appeared first on おすすめアプリ比較 オクトバ . セール情報 「Epic Heroes」が無料！＆「SHOW BY ROCK!! Fes A Live」でリリース609日記念キャンペーン！ オクトバ、セール・お買い得情報です。 今日は「Epic Heroes」「Dungon Shooer」「SHOW BY ROCK!! Fes A Live」のセール・キャンペーン情報をお伝えします。 意外な掘り出し物が見つ [ #8230;] The post セール情報 「Epic Heroes」が無料！＆「SHOW BY ROCK!! Fes A Live」でリリース609日記念キャンペーン！ appeared first on おすすめアプリ比較 オクトバ . 引用元 ： http //octoba.net/feed Android（アンドロイド）アプリ・スマートフォン情報サイト｜アンドロック様 アンドロック 無料LINEスタンプ＆隠しLINEスタンプまとめ！無料で使えるラインスタンプ盛りだくさん！【iPhone/Android共通】12/7更新 無料でゲットできちゃうLINEスタンプを一挙大公開！ カワイイ・カッコイイ・面白い、様々なLINEスタンプが全て無料でダウンロードできます！ しかも、スタンプショップには出てこない隠し無料LINEスタンプも大量公開！超激 [ #8230;] プロスピA 攻略情報まとめ｜プロ野球スピリッツA攻略 プロスピA（プロ野球スピリッツA）の攻略情報をまとめたページです。 基本的な使い方や機能、イベント攻略、おすすめ情報などなど！プロスピAをプレイしている人は是非チェックしてみてください！！ [Adsense] Check [ #8230;] 【プロスピA】OB第２弾(2021年)の評価ランキング！火の玉ストレート藤川球児降臨！【Sランク評価】 2021年度シリーズ2OB第2弾の評価ランキングを紹介します。 前回登場したOBダルビッシュセレクションも超豪華ラインナップでしたが、今回は火の玉ストレート藤川球児が登場します！！ 火の玉ストレート藤川球児は既にTwit [ #8230;] 【プロスピA】OBダルビッシュセレクション2021の選手評価ランキング！ 昨年のセレクション第2弾では、ダルビッシュ有が選ぶキャリアハイベストナインと称してダルビッシュセレクションが開催されましたが、今年はOBダルビッシュセレクションが開催されます！！ さらに、OBダルビッシュ有の登場もあると [ #8230;] 【プロスピA】2021シリーズ2 一塁手の評価ランキング！【Sランク評価】 2021年度シリーズ2の一塁手の評価ランキングを紹介します。 先日アニバーサリー第1弾と第2弾が公開されてばかりなので、ここでエナジーを消費するユーザーはほとんどいないと思いますが、獲得した際には誰が当たり選手なのかチェ [ #8230;] 東京卍リベンジャーズが無料で読めるマンガアプリまとめ 東京卍リベンジャーズが無料で読めるマンガアプリ一覧です。 本記事で紹介するマンガアプリ・マンガサイトなら、すべて合法的に無料で東京卍リベンジャーズを読む事が出来ます。 期間限定のキャンペーンだったり、読める話数が限定され [ #8230;] 【プロスピA】2021アニバーサリー第２弾の選手評価ランキング！確定で獲得したい選手は？ 2021年度アニバーサリー第2弾の選手評価ランキングを紹介します。 アニバーサリー第1弾に続き第2弾もかなり素晴らしいラインナップ！ポジション最強選手も多数！ 確定では誰を取るべきなのかチェックしていきましょう。 [Ad [ #8230;] LINEグループを作る方法＆複数人トークを作成する方法！基礎知識を解説！ LINEでグループを作る方法と、複数人トークをする方法を紹介します。 LINEグループと複数人トークについての基礎知識です。 2021年9月更新：グループの自動承認について LINEグループとは？複数人トークとは？ LI [ #8230;] 【プロスピA】2021アニバーサリー第１弾の選手評価ランキング！確定で獲得したい選手は？ 2021年度アニバーサリー第1弾の選手評価ランキングを紹介します。 今年のアニバーサリーも非常に豪華なラインナップ！アニバーサリープレイヤー確定スカウトでは一体誰を獲得すべきなのかチェックしていきましょう！ [Adsen [ #8230;] 【プロスピA】2021S1左翼手の評価ランキング！【Sランク評価】 2021年度シリーズ2の左翼手の評価ランキングを紹介します。 左翼手はシリーズ1とラインナップはほとんど同じですが、それぞれ能力に変化があるようです。上がっている選手もいれば下がっている選手もいますね。 評価をチェックし [ #8230;] 引用元 ： http //androck.jp/feed/ アンドロイドアプリのポータルサイトappliko(アプリコ)様 feedreader プラグインエラー 1ページに 5つまでしか使えません。
https://w.atwiki.jp/android_wiki/pages/14.html
プログラミングの定番であるhelloworldを制作します． 1. 新しい Android プロジェクトの作成 詳しいことは，プロジェクト作成をごらんください． プロジェクトの詳細は以下の通りです． プロジェクト名 HelloWorld パッケージ名 jp.world.hello （任意） アクティビティ名 HelloWorld アプリケーション名 Hello, world 2. 自動生成されたソースコードを表示 まずeclipseの左側の「パッケージエクスプローラ」から「HelloWorld src jp.world.hello HelloWorld.java 」を選択しソースを表示します． ソースは以下のようになっているはずです． package jp.world.hello; import android.app.Activity; import android.os.Bundle; public class HelloWorld extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle icicle) { super.onCreate(icicle); setContentView(R.layout.main); } } 3. 「Hello, world」プログラミング まず「Hello, world」を表示するためにラベルを使うため，android.widget.TextView をインポートします． import android.widget.TextView Androidでは，ユーザインタフェースはViewと呼ばれるクラスで構成されています．Viewクラスはテキストラベル，ラジオボタンなどなど定番のオブジェクトがあります． 今回は，「Hello, world」と表示するだけですのでTextViewクラスを用います． TextView tv = new TextView(this); 次にsetTextメソッドを用いて表示するメッセージを指定します． tv.setText("Hello, world"); 最後にsetContentViewを用いて作成したオブジェクトを表示します． setContentView(tv); というわけで最終的には次のようになります． package jp.world.hello; import android.app.Activity; import android.os.Bundle; import android.widget.TextView; /* 追加 */ public class HelloWorld extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle icicle) { super.onCreate(icicle); TextView tv = new TextView(this);/* 追加 */ tv.setText("Hello, world");/* 追加 */ setContentView(tv);/* 追加 */ } } 4. 実行 緑色の再生マークをクリックして実行します． すると，ダイアログが開きますので，「Android アプリケーション」をダブルクリックして新しい実行構成を作ります． 「新規構成」という項目をクリックして，今回は以下のように変更します． 名前 Hello, world プロジェクト HelloWorld アクティビティ jp.world.hello.HelloWorld 入力を終えたら「適用」を選択して，下部の「実行」を選択してください
https://w.atwiki.jp/losrega/
基本情報 タイトル ロストレガリア 配信日 2015年10月予定 ジャンル ファンタジーRPG 運営元 Aiming 対応端末 iOS7.0以上(iPhone4S以降) Android4.0.3以上(予定) 価格 無料 課金 一部課金コンテンツあり 公式サイト http //losrega.com/ 公式タグ #ロスレガ コピーライト © Aiming Inc. © 2004-2015 Perfect World Co.,Ltd.All Rights reserved. 当サイトについて このwikiはAndroid iOS用アプリ、ロストレガリアの攻略まとめwikiです。 公式ツイート @losrega_sp からのツイート
https://w.atwiki.jp/kapper1224/pages/104.html
こちらに記載しました 大須パウで買った2980円ジャンクQ507にWaydroid Linuxを入れてLineageOSコンテナを遊んでみた 2023/2/4時点最新版WayDroidを入れてみました。Android11です。 Ubuntuに最新版WayDroidコンテナを入れてAndroid11環境を爆速で楽しんでみた。フルLineageOS環境スゲー。簡単インストール。 WaydroidがAndroid11対応になってウマ娘も動いたそうな Linux / Waydroid でAndroid 11を動かし、ウマ娘をプレイする