android AppWidgetProvider开发桌面小工具

/**
* Implementation of App Widget functionality.做一些自己的操作即可 */
public class NewAppWidget extends AppWidgetProvider {

static void updateAppWidget(Context context, AppWidgetManager appWidgetManager,
int appWidgetId) {

CharSequence widgetText = context.getString(R.string.appwidget_text);
// Construct the RemoteViews object

RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.new_app_widget);
views.setTextViewText(R.id.appwidget_text, widgetText);

// Instruct the widget manager to update the widget
appWidgetManager.updateAppWidget(appWidgetId, views);
}

@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
// There may be multiple widgets active, so update all of them
for (int appWidgetId : appWidgetIds) {
updateAppWidget(context, appWidgetManager, appWidgetId);
}
}

@Override
public void onEnabled(Context context) {
// Enter relevant functionality for when the first widget is created
}

@Override
public void onDisabled(Context context) {
// Enter relevant functionality for when the last widget is disabled
}
}

<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>

<receiver android:name=".NewAppWidget">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>

<meta-data
android:name="android.appwidget.provider"
android:resource="@xml/new_app_widget_info" />
</receiver>