从 back4app 数据库的 class 获取对象时出现问题 仅 FLUTTER

Problem with Getting object from class of back4app database FLUTTER ONLY

我对此变得愚蠢

Future Object1() async{
final object1 = await ParseObject('Announcement')..objectId='vG1WZeVHkV';
var mal = await object1.get('an1');
await print(mal);

}

以防万一你问那个结果

I/flutter ( 9123): null

当我希望如此时url(它是 back4app 中用于图像的文件列)

"an1":{"__type":"File","name":"6c128c064142552b8c3a5e2ac016bc1d_1.jpg","url":"https://parsefiles.back4app.com/nQ1FGO9uklC7f9eMKYDuA16pvAjamCYnbI6xD2Zy/6c128c064142552b8c3a5e2ac016bc1d_1.jpg"}

(注意我是通过使用 object1.fetch() 得到的)

所以有人可以帮助我吗???

应该是:

Future Object1() async {
  final object1Response = await ParseObject('Announcement').getObject('vG1WZeVHkV');
  if (object1Response.success) {
    final object1 = object1Response.result;
    var mal = await object1.get('an1');
    print(mal);
  }
}