Question

Flutter和Firebase：如何检查我的图片是否成功上传到Firebase存储？

我试图找到一种方法查看图片是否成功上传，以便我可以启动和停止LoadingScreen()。

final StorageReference firebaseStorageRef = FirebaseStorage.instance
        .ref()
        .child('$path/${userID}_${timeStamp}_${number}_${tag}.jpg');

final StorageUploadTask uploadTask = firebaseStorageRef.putFile(image);

我期待着大家的来信。预先谢谢你！

Answer 1

您可以在此处上传和验证是否将图像上传到FirebaseStorage：

  final StorageReference firebaseStorageRef = FirebaseStorage.instance
      .ref()
      .child('$path/${userID}_${timeStamp}_${number}_${tag}.jpg'); 
  StorageUploadTask uploadTask =
      firebaseStorageRef.putFile(image);
  StorageTaskSnapshot storageSnapshot = await uploadTask.onComplete;
  var downloadUrl = await storageSnapshot.ref.getDownloadURL();
  if (uploadTask.isComplete) {
    final String url = downloadUrl.toString();
    print(url);
    //Success! Upload is complete
  } else {
    //Error uploading file
  }

上传完成后，您将获得downloadUrl。

Answer 2

您可以使用StorageUploadTask的{{3}}属性。

  final StorageReference firebaseStorageRef = FirebaseStorage.instance
      .ref()
      .child('$path/${userID}_${timeStamp}_${number}_${tag}.jpg'); 
  StorageUploadTask uploadTask =
      firebaseStorageRef.putFile(image);
  StorageTaskSnapshot storageSnapshot = await uploadTask.onComplete;
  // Here you know that the picture/file is succesfully uploaded.
  // You can stop your LoadingScreen().

请注意，您可以使用一些try-catch子句来处理异步方法的错误。

Flutter＆Firebase：如何检查我的图片是否成功上传到Firebase Storage？

2 个答案: