Question

当我从手机上的小部件页面添加我的小部件时，它会播放Toast消息“Button Clicked”。只有按下按钮才会显示toast，并且它可以正常工作，但是当小部件添加到屏幕时它也会显示..

我猜它可能与超级有关，但我不完全确定。

代码：

       @Override
       public void onUpdate(Context context, AppWidgetManager appWidgetManager,
               int[] appWidgetIds) {
           final int N = appWidgetIds.length;

           for (int i=0; i<N; i++) {
               int appWidgetId = appWidgetIds[i];

               Intent intent = new Intent(context, Provider.class);
               intent.setAction(AppWidgetManager.ACTION_APPWIDGET_UPDATE);
               PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, intent, 0);

               RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget);
               views.setOnClickPendingIntent(R.id.onoffbutton, pendingIntent);

               appWidgetManager.updateAppWidget(appWidgetId, views);
           }
       }
           @Override 
           public void onReceive(Context context, Intent intent) {
               super.onReceive(context, intent);
               if (intent.getAction().equals(AppWidgetManager.ACTION_APPWIDGET_UPDATE)) {
                   Toast.makeText(context, "Button Clicked", Toast.LENGTH_SHORT).show();
                   System.out.println("Click!");
                   }

           }

编辑：

public static String BUTTON_CLICK = "android.appwidget.action.BUTTON_CLICK";


       @Override
       public void onUpdate(Context context, AppWidgetManager appWidgetManager,
               int[] appWidgetIds) {
           final int N = appWidgetIds.length;

           for (int i=0; i<N; i++) {
               int appWidgetId = appWidgetIds[i];

               Intent intent = new Intent(context, Provider.class);
               intent.setAction(AppWidgetManager.ACTION_APPWIDGET_UPDATE);
               Intent clickIntent = new Intent(context, Provider.class);
               clickIntent.setAction(BUTTON_CLICK);  
               PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, intent, 0);

               RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget);
               views.setOnClickPendingIntent(R.id.onoffbutton, pendingIntent);

               appWidgetManager.updateAppWidget(appWidgetId, views);
           }
       }
          @Override 
           public void onReceive(Context context, Intent clickIntent) {
               super.onReceive(context, clickIntent);
               if (clickIntent.getAction().equals(BUTTON_CLICK)) {
                   Toast.makeText(context, "Button Clicked", Toast.LENGTH_SHORT).show();
                   System.out.println("Click!");
                   }

           }

Answer 1

那是因为您对小部件更新有相同的操作

为按钮单独执行意图操作（例如BTN_ACTION）。在onReceive（）中检查i = action intent有哪些，如果是intent.getAction（）。equals（BTN_ACTION） - 处理按钮点击。

Android Widget按钮单击“添加”

1 个答案: