android - RemoteViewsFactory grantUriPermission 获取数据

Question

有一个带有 Listview 的 AppWidget，我想用 RemoteViewsService.RemoteViewsFactory 填充它。

我有以下错误

E/AndroidRuntime(1203): java.lang.SecurityException: Permission Denial: reading com.crbin1.myapp.data.ProviderLTD uri content://com.crbin1.myapp.data.ProviderLTD/TB_WIDGET3P from pid=413, uid=10013 requires the provider be exported, or grantUriPermission()

如果我在 list 中导出 ProviderLTD(我的内容提供商)，它会起作用，但我想避免导出它。

另一个解决方案是 grantUriPermission()。我在 list 中将 grantUriPermissions 设置为 true，但现在我不明白我必须在我的代码中的哪个位置授予权限。

public class Widget3pService extends RemoteViewsService {
       @Override
        public RemoteViewsFactory onGetViewFactory(Intent intent) {
           return new StackRemoteViewsFactory(this.getApplicationContext(), intent);
        }
    }


    class StackRemoteViewsFactory implements RemoteViewsService.RemoteViewsFactory {
        private List<ObjW3Task> mWidgetItems = new ArrayList<ObjW3Task>();
        private Context mContext;
        private int mAppWidgetId;

        public StackRemoteViewsFactory(Context context, Intent intent) {
            mContext = context;
            mAppWidgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID);
        }

        public RemoteViews getViewAt(int position) {
            // use mWidgetItems to populate ListView
            // fillInIntent for listeners
            return myRemoteViews;
        }

        public void onDataSetChanged() {
            mWidgetItems = new ArrayList<ObjW3Task>();
            // create mWidgetItems by accessing my ContentProvider class
        }
}

Answer 1

不确定这是否仍然相关；通过设置“android:exported = true”，我发现它对我有效:

<provider android:name="WeatherDataProvider" android:exported="true">

看这个: Android Permission denial in Widget RemoteViewsFactory for Content