java - RemoteViewsService 未调用

Question

我目前正在尝试将 ListView 添加到我的小部件中。遗憾的是，我的 RemoteViewsService 没有被调用。

这是我的小部件刷新代码:

RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget_today_layout);

Intent intent = new Intent(context, TodayWidgetService.class);
intent.putExtra("package", context.getPackageName());
intent.putExtra("items", items.toArray(new String[items.size()])); // items is just a List<String>

views.setRemoteAdapter(R.id.widget_today_content, intent);
manager.notifyAppWidgetViewDataChanged(ids, R.id.widget_today_content);

以及服务代码(在 TodayWidgetService 中):

@Override
public RemoteViewsFactory onGetViewFactory(final Intent intent) {
    System.out.println("Called");
    return new TodayWidgetReceiver.WidgetFactory(intent.getStringExtra("package"), intent.getStringArrayExtra("items"));
}

如您所见，每次执行服务时我都会打印一条 Called 消息。这就是我在这里的原因:该消息不在我的控制台中(因此，不会调用该服务)。

我将其添加到我的 AndroidManifest.xml 中:

<application
...
    <service
        android:name="services.TodayWidgetService"
        android:permission="android.permission.BIND_REMOTEVIEWS">
    </service>
</application>

感谢您的帮助!

Answer 1

你的 onUpdate 方法需要像这样:

public void onUpdate(Context context, AppWidgetManager appWidgetManager,
int[] appWidgetIds) {
    // update each of the app widgets with the remote adapter
    for (int i = 0; i < appWidgetIds.length; ++i) {

        // Set up the intent that starts the StackViewService, which will
        // provide the views for this collection.
        Intent intent = new Intent(context, StackWidgetService.class);
        // Add the app widget ID to the intent extras.
        intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetIds[i]);
        intent.setData(Uri.parse(intent.toUri(Intent.URI_INTENT_SCHEME)));
        // Instantiate the RemoteViews object for the app widget layout.
        RemoteViews rv = new RemoteViews(context.getPackageName(), R.layout.widget_layout);
        // Set up the RemoteViews object to use a RemoteViews adapter.
        // This adapter connects
        // to a RemoteViewsService  through the specified intent.
        // This is how you populate the data.
        rv.setRemoteAdapter(R.id.stack_view, intent);

        // The empty view is displayed when the collection has no items.
        // It should be in the same layout used to instantiate the RemoteViews
        // object above.
        rv.setEmptyView(R.id.stack_view, R.id.empty_view);

        //
        // Do additional processing specific to this app widget...
        //

        appWidgetManager.updateAppWidget(appWidgetIds[i], rv);
    }
    super.onUpdate(context, appWidgetManager, appWidgetIds);
}

所以检查这些事情:

1. 您是否在刷新代码中调用 appWidgetManager.updateAppWidget(appWidgetIds[i], rv); ？

2. 您需要将 appWidgetId 和数据设置为 Service Intent ，如下所示:

   intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetIds[i]); intent.setData(Uri.parse(intent.toUri(Intent.URI_INTENT_SCHEME)));

Refer to the Android Developers docs