你可以通过在RemoteViewsFactory的构造函数中获取appWidgetId来解决这个问题。下面是一个示例代码:
首先,在你的AppWidgetProvider的onUpdate方法中,添加如下代码:
@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
for (int appWidgetId : appWidgetIds) {
Intent intent = new Intent(context, MyWidgetService.class);
intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget_layout);
views.setRemoteAdapter(R.id.listView, intent);
appWidgetManager.updateAppWidget(appWidgetId, views);
}
super.onUpdate(context, appWidgetManager, appWidgetIds);
}
在上面的代码中,我们将appWidgetId作为额外的数据传递给MyWidgetService。
然后,在你的MyWidgetService中,通过如下方式获取appWidgetId:
public class MyWidgetService extends RemoteViewsService {
@Override
public RemoteViewsFactory onGetViewFactory(Intent intent) {
int appWidgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID);
return new MyRemoteViewsFactory(this.getApplicationContext(), appWidgetId);
}
}
在上面的代码中,我们使用intent.getIntExtra方法来获取appWidgetId。
最后,在你的RemoteViewsFactory的构造函数中,接收appWidgetId并保存它:
public class MyRemoteViewsFactory implements RemoteViewsService.RemoteViewsFactory {
private Context mContext;
private int mAppWidgetId;
public MyRemoteViewsFactory(Context context, int appWidgetId) {
mContext = context;
mAppWidgetId = appWidgetId;
}
// 其他实现方法...
}
通过这种方式,你可以从RemoteViewsFactory中获取调用小部件的appWidgetId。