Flutter Web：firebase_storage：MissingPluginException找不到方法StorageReference＃putData的实现

Question

我正在尝试将 UInt8List 格式的图像上传到 Firebase 存储。我正在使用“StorageReference.putData”。我不断收到这个错误，说 putFile 没有定义。我已经更新了所有最新的 firebase 软件包，但仍然没有成功。在 Flutter Web 上不能 putData 吗？

我尝试更新所有包，然后'flutter clean'，'flutter packages get'

我不使用“putFile”的原因是因为 Flutter Web 不支持 dart:io，它包含使用 putFile 所需的特定 File 类。

错误：

Error: MissingPluginException(No implementation found for method StorageReference#putData on channel plugins.flutter.io/firebase_storage)
    at Object.throw_ [as throw] (http://localhost:60357/dart_sdk.js:4331:11)
    at MethodChannel._invokeMethod (http://localhost:60357/packages/flutter/src/services/system_channels.dart.lib.js:942:21)
    at _invokeMethod.next (<anonymous>)
    at http://localhost:60357/dart_sdk.js:37593:33
    at _RootZone.runUnary (http://localhost:60357/dart_sdk.js:37447:58)
    at _FutureListener.thenAwait.handleValue (http://localhost:60357/dart_sdk.js:32424:29)
    at handleValueCallback (http://localhost:60357/dart_sdk.js:32971:49)
    at Function._propagateToListeners (http://localhost:60357/dart_sdk.js:33009:17)
    at _Future.new.[_completeWithValue] (http://localhost:60357/dart_sdk.js:32852:23)
    at async._AsyncCallbackEntry.new.callback (http://localhost:60357/dart_sdk.js:32874:35)
    at Object._microtaskLoop (http://localhost:60357/dart_sdk.js:37708:13)
    at _startMicrotaskLoop (http://localhost:60357/dart_sdk.js:37714:13)
    at http://localhost:60357/dart_sdk.js:33226:9

我的上传功能：

  Future<StorageTaskSnapshot> uploadImage(Uint8List imageFile, int pos) {
    return storageRef
        .child("posts/${currentUser.uid}/$_postId/$pos.jpg")
        .putData(imageFile)
        .onComplete;
  }

Answer 1

在混合了其他几个人的答案后，我终于得到了这个工作。我从 image_picker_for_web 中的一张图片开始：

final picker = ImagePicker();
final new_image = await picker.getImage(
    source: source=='gallery' ? ImageSource.gallery : ImageSource.camera,
);

然后：

String url;
var bytes = await new_image.readAsBytes();
try {
    fb.StorageReference _storage = fb.storage().ref('002test');
    fb.UploadTaskSnapshot uploadTaskSnapshot = await _storage.put(bytes, fb.UploadMetadata(contentType: 'image/png')).future;
    var imageUri = await uploadTaskSnapshot.ref.getDownloadURL();
    url = imageUri.toString();
} catch (e) {
    print(e);
}

这是为我指明正确方向的 SO：Flutter Web Upload to Firestore