android手电筒做成窗口小部件

package com.android.flashlight; import android.app.PendingIntent; import android.appwidget.AppWidgetManager; import android.appwidget.AppWidgetProvider; import android.content.Context; import android.content.Intent; import android.sax.StartElementListener; import android.widget.RemoteViews; public class FlashSwitchWidgetProvider extends AppWidgetProvider { private static RemoteViews mRemoteViews; /** * 每删除一次窗口小部件就调用一次 */ @Override public void onDeleted(Context context, int[] appWidgetIds) { super.onDeleted(context, appWidgetIds); Contants.LogI("onDeleted"); } /** * 当最后一个该窗口小部件删除时调用该方法，注意是最后一个 */ @Override public void onDisabled(Context context) { super.onDisabled(context); Contants.LogI("onDisabled"); } /** * 当该窗口小部件第一次添加到桌面时调用该方法，可添加多次但只第一次调用 */ @Override public void onEnabled(Context context) { super.onEnabled(context); Contants.LogI("onEnabled"); } /** * 接收窗口小部件点击时发送的广播 */ @Override public void onReceive(Context context, Intent intent) { super.onReceive(context, intent); Contants.LogI("onReceive : action = " + intent.getAction()); if(Contants.ACTION_FLASHLIGHT_WIGET_CLICK.equals(intent.getAction())){ //这里是点击“窗口小部件”要执行的内容 Contants.LogI("onReceive: start activity: MainActivity"); Contants.startActivity(context, Contants.FLASHLIGHT_PACKAGE_NAME, Contants.FLASHLIGHT_ACTIVITY_NAME); } } /** * 每次窗口小部件被点击更新都调用一次该方法 */ @Override public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) { super.onUpdate(context, appWidgetManager, appWidgetIds); Contants.LogI("onUpdate"); final int counter = appWidgetIds.length; Contants.LogD("counter = " + counter); for (int i = 0; i < counter; i++) { int appWidgetId = appWidgetIds[i]; onWidgetUpdate(context, appWidgetManager, appWidgetId); } } /** * 窗口小部件更新 * @param context * @param appWidgeManger * @param appWidgetId */ private void onWidgetUpdate(Context context, AppWidgetManager appWidgeManger, int appWidgetId) { Contants.LogD("appWidgetId = " + appWidgetId); mRemoteViews = new RemoteViews(context.getPackageName(), R.layout.flashlight_widget_layout); //"窗口小部件"点击事件发送的Intent广播 Intent intentClick = new Intent(); intentClick.setAction(Contants.ACTION_FLASHLIGHT_WIGET_CLICK); PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, intentClick, 0); mRemoteViews.setOnClickPendingIntent(R.id.imageview_widget, pendingIntent); appWidgeManger.updateAppWidget(appWidgetId, mRemoteViews); } }