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下面是我的小部件扩展 AppWidgetProvider 的一些代码。小部件放在主屏幕上时正确呈现，但视图为空。使用日志记录，我发现没有从我用来扩展 RemoteViewsService (BudgetWidgetService) 的类中调用任何方法，它返回 RemoteViewsService.RemoteViewsFactory 的实现。

是否有错误导致 BudgetWidgetService 永远不会被实例化或使用？

我什至找不到检查 BudgetWidgetService 是否绑定到我创建的 RemoteViews 布局的方法。如果您能想到任何我可以进一步诊断此问题的方法，除了在我的 AppWidgetProvider 中记录方法调用和 RemoteViewsService 扩展之外，我也将不胜感激，

@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
    Log.i("Budget Widget", "Provider onUpdate called");
    // Update each of the widgets with the remote adapter
    for (int i = 0; i < appWidgetIds.length; ++i) {
        RemoteViews layout = buildLayout(context, appWidgetIds[i]);
        appWidgetManager.updateAppWidget(appWidgetIds[i], null);
        appWidgetManager.updateAppWidget(appWidgetIds[i], layout);
    }
    super.onUpdate(context, appWidgetManager, appWidgetIds);
}

private RemoteViews buildLayout(Context context, int appWidgetId) {
    Log.i("Budget Widget", "Provider buildLayout called");
    RemoteViews rv = new RemoteViews(context.getPackageName(), R.layout.widget_budget);

    RemoteViews list_item = new RemoteViews(context.getPackageName(), R.layout.widget_budget_item);
    list_item.setTextViewText(R.id.widget_budget_item_text, "Test #1");

    final Intent intent = new Intent(context, BudgetWidgetService.class);
    intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
    intent.setData(Uri.parse(intent.toUri(Intent.URI_INTENT_SCHEME)));
    rv.setRemoteAdapter(R.id.widget_budget_list, intent);

    rv.setEmptyView(R.id.widget_budget_list, R.id.empty_view);

    final Intent refreshIntent = new Intent(context, BudgetWidgetProvider.class);
    refreshIntent.setAction(BudgetWidgetProvider.REFRESH_ACTION);
    final PendingIntent refreshPendingIntent = PendingIntent.getBroadcast(context, 0,
            refreshIntent, PendingIntent.FLAG_UPDATE_CURRENT);
    rv.setOnClickPendingIntent(R.id.refresh_button, refreshPendingIntent);

    return rv;
}
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1 回答 1

11

I was having the same problem, and discovered that I had forgotten to add the android.permission.BIND_REMOTEVIEWS permission to my RemoteViewsService in my AndroidManifest.xml:

<service android:name="MyWidgetService"
...
android:permission="android.permission.BIND_REMOTEVIEWS" />

I found my answer under the section "Manifest for app widgets with collections" on the App Widgets guide.

于 2013-06-30T03:48:06.833 回答