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<receiver android:name="ExampleAppWidgetProvider" > <intent-filter> <action android:name="android.appwidget.action.APPWIDGET_UPDATE" /> </intent-filter> <meta-data android:name="android.appwidget.provider" android:resource="@xml/example_appwidget_info" /> </receiver>
<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android" android:minWidth="40dp" android:minHeight="40dp" android:updatePeriodMillis="86400000" android:previewImage="@drawable/preview" android:initialLayout="@layout/example_appwidget" android:configure="com.example.android.ExampleAppWidgetConfigure" android:resizeMode="horizontal|vertical" android:widgetCategory="home_screen"> </appwidget-provider>
<activity android:name=".ExampleAppWidgetConfigure"> <intent-filter> <action android:name="android.appwidget.action.APPWIDGET_CONFIGURE"/> </intent-filter> </activity>
Intent intent = getIntent(); Bundle extras = intent.getExtras(); if (extras != null) { mAppWidgetId = extras.getInt( AppWidgetManager.EXTRA_APPWIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID); }
AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.example_appwidget); appWidgetManager.updateAppWidget(mAppWidgetId, views);
Intent resultValue = new Intent(); resultValue.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, mAppWidgetId); setResult(RESULT_OK, resultValue); finish();
public class StackWidgetService extends RemoteViewsService { @Override public RemoteViewsFactory onGetViewFactory(Intent intent) { return new StackRemoteViewsFactory(this.getApplicationContext(), intent); } } class StackRemoteViewsFactory implements RemoteViewsService.RemoteViewsFactory { //... include adapter-like methods here. See the StackView Widget sample. }
<service android:name="MyWidgetService" ... android:permission="android.permission.BIND_REMOTEVIEWS" />
<?xml version="1.0" encoding="utf-8"?> <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent"> <StackView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/stack_view" android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center" android:loopViews="true" /> <TextView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/empty_view" android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center" android:background="@drawable/widget_item_background" android:textColor="#ffffff" android:textStyle="bold" android:text="@string/empty_view_text" android:textSize="20sp" /> </FrameLayout>
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) { // update each of the app widgets with the remote adapter for (int i = 0; i < appWidgetIds.length; ++i) { // Set up the intent that starts the StackViewService, which will // provide the views for this collection. Intent intent = new Intent(context, StackWidgetService.class); // Add the app widget ID to the intent extras. intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetIds[i]); intent.setData(Uri.parse(intent.toUri(Intent.URI_INTENT_SCHEME))); // Instantiate the RemoteViews object for the app widget layout. RemoteViews rv = new RemoteViews(context.getPackageName(), R.layout.widget_layout); // Set up the RemoteViews object to use a RemoteViews adapter. // This adapter connects // to a RemoteViewsService through the specified intent. // This is how you populate the data. rv.setRemoteAdapter(appWidgetIds[i], R.id.stack_view, intent); // The empty view is displayed when the collection has no items. // It should be in the same layout used to instantiate the RemoteViews // object above. rv.setEmptyView(R.id.stack_view, R.id.empty_view); // // Do additional processing specific to this app widget... // appWidgetManager.updateAppWidget(appWidgetIds[i], rv); } super.onUpdate(context, appWidgetManager, appWidgetIds); }
class StackRemoteViewsFactory implements RemoteViewsService.RemoteViewsFactory { private static final int mCount = 10; private List<WidgetItem> mWidgetItems = new ArrayList<WidgetItem>(); private Context mContext; private int mAppWidgetId; public StackRemoteViewsFactory(Context context, Intent intent) { mContext = context; mAppWidgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID); } public void onCreate() { // In onCreate() you setup any connections / cursors to your data source. Heavy lifting, // for example downloading or creating content etc, should be deferred to onDataSetChanged() // or getViewAt(). Taking more than 20 seconds in this call will result in an ANR. for (int i = 0; i < mCount; i++) { mWidgetItems.add(new WidgetItem(i + "!")); } ... } ...
public RemoteViews getViewAt(int position) { // Construct a remote views item based on the app widget item XML file, // and set the text based on the position. RemoteViews rv = new RemoteViews(mContext.getPackageName(), R.layout.widget_item); rv.setTextViewText(R.id.widget_item, mWidgetItems.get(position).text); ... // Return the remote views object. return rv; }
public class StackWidgetProvider extends AppWidgetProvider { public static final String TOAST_ACTION = "com.example.android.stackwidget.TOAST_ACTION"; public static final String EXTRA_ITEM = "com.example.android.stackwidget.EXTRA_ITEM"; ... // Called when the BroadcastReceiver receives an Intent broadcast. // Checks to see whether the intent's action is TOAST_ACTION. If it is, the app widget // displays a Toast message for the current item. @Override public void onReceive(Context context, Intent intent) { AppWidgetManager mgr = AppWidgetManager.getInstance(context); if (intent.getAction().equals(TOAST_ACTION)) { int appWidgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID); int viewIndex = intent.getIntExtra(EXTRA_ITEM, 0); Toast.makeText(context, "Touched view " + viewIndex, Toast.LENGTH_SHORT).show(); } super.onReceive(context, intent); } @Override public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) { // update each of the app widgets with the remote adapter for (int i = 0; i < appWidgetIds.length; ++i) { // Sets up the intent that points to the StackViewService that will // provide the views for this collection. Intent intent = new Intent(context, StackWidgetService.class); intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetIds[i]); // When intents are compared, the extras are ignored, so we need to embed the extras // into the data so that the extras will not be ignored. intent.setData(Uri.parse(intent.toUri(Intent.URI_INTENT_SCHEME))); RemoteViews rv = new RemoteViews(context.getPackageName(), R.layout.widget_layout); rv.setRemoteAdapter(appWidgetIds[i], R.id.stack_view, intent); // The empty view is displayed when the collection has no items. It should be a sibling // of the collection view. rv.setEmptyView(R.id.stack_view, R.id.empty_view); // This section makes it possible for items to have individualized behavior. // It does this by setting up a pending intent template. Individuals items of a collection // cannot set up their own pending intents. Instead, the collection as a whole sets // up a pending intent template, and the individual items set a fillInIntent // to create unique behavior on an item-by-item basis. Intent toastIntent = new Intent(context, StackWidgetProvider.class); // Set the action for the intent. // When the user touches a particular view, it will have the effect of // broadcasting TOAST_ACTION. toastIntent.setAction(StackWidgetProvider.TOAST_ACTION); toastIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetIds[i]); intent.setData(Uri.parse(intent.toUri(Intent.URI_INTENT_SCHEME))); PendingIntent toastPendingIntent = PendingIntent.getBroadcast(context, 0, toastIntent, PendingIntent.FLAG_UPDATE_CURRENT); rv.setPendingIntentTemplate(R.id.stack_view, toastPendingIntent); appWidgetManager.updateAppWidget(appWidgetIds[i], rv); } super.onUpdate(context, appWidgetManager, appWidgetIds); } }
public class StackWidgetService extends RemoteViewsService { @Override public RemoteViewsFactory onGetViewFactory(Intent intent) { return new StackRemoteViewsFactory(this.getApplicationContext(), intent); } } class StackRemoteViewsFactory implements RemoteViewsService.RemoteViewsFactory { private static final int mCount = 10; private List<WidgetItem> mWidgetItems = new ArrayList<WidgetItem>(); private Context mContext; private int mAppWidgetId; public StackRemoteViewsFactory(Context context, Intent intent) { mContext = context; mAppWidgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID); } // Initialize the data set. public void onCreate() { // In onCreate() you set up any connections / cursors to your data source. Heavy lifting, // for example downloading or creating content etc, should be deferred to onDataSetChanged() // or getViewAt(). Taking more than 20 seconds in this call will result in an ANR. for (int i = 0; i < mCount; i++) { mWidgetItems.add(new WidgetItem(i + "!")); } ... } ... // Given the position (index) of a WidgetItem in the array, use the item's text value in // combination with the app widget item XML file to construct a RemoteViews object. public RemoteViews getViewAt(int position) { // position will always range from 0 to getCount() - 1. // Construct a RemoteViews item based on the app widget item XML file, and set the // text based on the position. RemoteViews rv = new RemoteViews(mContext.getPackageName(), R.layout.widget_item); rv.setTextViewText(R.id.widget_item, mWidgetItems.get(position).text); // Next, set a fill-intent, which will be used to fill in the pending intent template // that is set on the collection view in StackWidgetProvider. Bundle extras = new Bundle(); extras.putInt(StackWidgetProvider.EXTRA_ITEM, position); Intent fillInIntent = new Intent(); fillInIntent.putExtras(extras); // Make it possible to distinguish the individual on-click // action of a given item rv.setOnClickFillInIntent(R.id.widget_item, fillInIntent); ... // Return the RemoteViews object. return rv; } ... }
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原文地址:http://blog.csdn.net/u014050188/article/details/50990725