小部件发送多种类型的意图

Question

我正在构建一个具有多个按钮的小部件,每个按钮都将自己的意图发送给广播接收器.广播接收器假设基于按下哪个按钮显示Toast消息.代码目前看起来像这样:

public class WidgetProvider extends AppWidgetProvider {

    @Override
    public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds){

        ComponentName thisWidget = new ComponentName(context, WidgetProvider.class);
        int[] allWidgetIds = appWidgetManager.getAppWidgetIds(thisWidget);
        for (int widgetId : allWidgetIds) {
            RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.widget_layout);

            SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);

            // Set the text of the buttons
            remoteViews.setTextViewText(R.id.widgetPreset1Button, prefs.getString("widget1", "Not set"));
            remoteViews.setTextViewText(R.id.widgetPreset2Button, prefs.getString("widget2", "Not set"));
            remoteViews.setTextViewText(R.id.widgetPreset3Button, prefs.getString("widget3", "Not set"));
            remoteViews.setTextViewText(R.id.widgetPreset4Button, prefs.getString("widget4", "Not set"));

            // Register the buttons with an OnClick event
            Intent intent1 = new Intent("myapp.SendWidgetPreset");
            intent1.putExtra("Widget", 1);
            PendingIntent pendingIntent1 = PendingIntent.getBroadcast(context, 0, intent1, PendingIntent.FLAG_UPDATE_CURRENT);
            remoteViews.setOnClickPendingIntent(R.id.widgetPreset1Button, pendingIntent1);

            Intent intent2 = new Intent("myapp.SendWidgetPreset");
            intent2.putExtra("Widget", 2);
            PendingIntent pendingIntent2 = PendingIntent.getBroadcast(context, 0, intent2, PendingIntent.FLAG_UPDATE_CURRENT);
            remoteViews.setOnClickPendingIntent(R.id.widgetPreset2Button, pendingIntent2);

            Intent intent3 = new Intent("myapp.SendWidgetPreset");
            intent3.putExtra("Widget", 3);
            PendingIntent pendingIntent3 = PendingIntent.getBroadcast(context, 0, intent3, PendingIntent.FLAG_UPDATE_CURRENT);
            remoteViews.setOnClickPendingIntent(R.id.widgetPreset3Button, pendingIntent3);

            Intent intent4 = new Intent("myapp.SendWidgetPreset");
            intent4.putExtra("Widget", 4);
            PendingIntent pendingIntent4 = PendingIntent.getBroadcast(context, 0, intent4, PendingIntent.FLAG_UPDATE_CURRENT);
            remoteViews.setOnClickPendingIntent(R.id.widgetPreset4Button, pendingIntent4);

            new WidgetBroadcastReceiver();

            appWidgetManager.updateAppWidget(widgetId, remoteViews);
        }
    }
}

和BroadcastReceiver:

public class WidgetBroadcastReceiver extends BroadcastReceiver{

    public WidgetBroadcastReceiver(){
    }

    @Override
    public void onReceive(Context context, Intent arg1) {
        int widget = arg1.getIntExtra("Widget", -1);

        Toast.makeText(context, "Widget pressed: " + widget, Toast.LENGTH_SHORT).show();    
    }
}

我的问题是Widget pressed: 4无论按哪个按钮,它总是显示.如果我把四行intent4,intent4.putExtra()和pendingIntent4,以及remoteViews.setOnClickPendingIntent()所有其他意图,它将总是说Widget pressed: 3.换句话说,无论最后的意图注册是什么,那就是Toast消息中显示的小部件.

任何人都知道为什么这不符合我的要求？

Answer 1

你需要为每个pendingintent ex提供单独的请求代码:

PendingIntent pendingIntent1 = PendingIntent.getBroadcast(context, 0, intent1, PendingIntent.FLAG_UPDATE_CURRENT); 
PendingIntent pendingIntent1 = PendingIntent.getBroadcast(context, 1/*request code*/, intent1, PendingIntent.FLAG_UPDATE_CURRENT);