Question

public class ExampleAppWidgetProvider extends AppWidgetProvider {

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

    final int N = appWidgetIds.length;

    // Perform this loop procedure for each App Widget that belongs to this
    // provider
    for (int i = 0; i < N; i++) {
        int appWidgetId = appWidgetIds[i];

        // Get the layout for the App Widget and attach an on-click listener
        // to the button
        RemoteViews views = new RemoteViews(context.getPackageName(),
                R.layout.example_appwidget);

        Intent intent = new Intent(context, Fragment_testActivity.class);
        intent.setAction(AppWidgetManager.ACTION_APPWIDGET_UPDATE);
        intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIds);
        PendingIntent pendingIntent = PendingIntent.getBroadcast(context,
                0, intent, PendingIntent.FLAG_UPDATE_CURRENT);

        views.setOnClickPendingIntent(R.id.button1, pendingIntent);

        // Tell the AppWidgetManager to perform an update on the current app
        // widget
        appWidgetManager.updateAppWidget(appWidgetId, views);

    }
}

}

当小部件添加到主屏幕并单击button1时，为什么button1不会触发onUpdate（也不是onReceive）？添加/删除小部件会触发这些事件，但不会单击按钮。

Manifest，widget declaration，widget layout declaration

Answer 1

我首先看到的是：

new Intent(context, Fragment_testActivity.class);

您将活动指定为接收组件。该活动与更新过程无关。尝试将ExampleAppWidgetProvider设置为intent的组件，或者根本不指定组件（例如，使用new Intent()）。

用于触发onUpdate的App小部件按钮

1 个答案: