firebase - “task.future.then ”不断在我的Flutter代码中引发错误

Question

这是我的代码-

    Future uploadImage() async {
var randomno = Random(25);
final StorageReference firebaseStorageRef = FirebaseStorage.instance
    .ref()
    .child('profilepics/${randomno.nextInt(5000).toString()}.jpg');
StorageUploadTask task = firebaseStorageRef.putFile(selectedImage);

task.future.then((value) {
  setState(() {
    userManagement
        .updateProfilePic(value.downloadUrl.toString())
        .then((val) {
      setState(() {
        profilePicUrl = value.downloadUrl.toString();
        isLoading = false;
      });
    });
  });
}).catchError((e) {
  print(e);
});
  }

这是它给的错误-
未为类型“StorageUploadTask”定义 setter/getter “future”。
尝试导入定义“future”的库，将名称更正为现有 setter/getter 的名称，或者定义一个名为“future”的 setter/getter 或字段。
虽然我已经导入了dart:async和dart:io
请帮忙，谢谢

Answer 1

StorageUploadTask没有名为future的属性，您必须使用onComplete进行以下操作:

final StorageReference firebaseStorageRef = FirebaseStorage.instance
    .ref()
    .child('profilepics/${randomno.nextInt(5000).toString()}.jpg');
StorageUploadTask task = firebaseStorageRef.putFile(selectedImage);
task.onComplete.then((value) {
  setState(() {
    userManagement
        .updateProfilePic(value.ref.getDownloadURL().toString())
        .then((val) {
      setState(() {
        profilePicUrl = value.ref.getDownloadURL().toString();
        isLoading = false;
      });
    });
  });

https://github.com/FirebaseExtended/flutterfire/blob/master/packages/firebase_storage/lib/src/upload_task.dart#L28