android - 下载时出现 Firebase StorageException

Question

我一直在寻找这个问题，但我没有在这里找到任何解决方案。我的问题是，当我将新项目发布到 firebase 存储时，一切正常，但是当我尝试下载它时，目录文件夹已成功创建，但文件未下载，因为它向我显示此错误异常:

com.google.firebase.storage.StorageException: Object does not exist at location

我的代码在这里:

  @Override
        public void onButtonDownloadClick(View view, final int position) {
            String name = list.get(position).getRemoteName();


            File storagePath = new File(Environment.getExternalStorageDirectory(), "FromFiles");
            // Create direcorty if not exists
            if(!storagePath.exists()) {
                storagePath.mkdirs();
            }

            final File myFile = new File(storagePath, list.get(position).getRemoteName());


            islandRef = storageReference.child(uid).child("files").child(name);


            islandRef.getFile(myFile).addOnSuccessListener(new OnSuccessListener<FileDownloadTask.TaskSnapshot>() {
                @Override
                public void onSuccess(FileDownloadTask.TaskSnapshot taskSnapshot) {
                    // Local temp file has been created
                    Toast.makeText(getActivity(), "Succeed", Toast.LENGTH_LONG).show();
                }
            }).addOnFailureListener(new OnFailureListener() {
                @Override
                public void onFailure(@NonNull Exception exception) {
                    // Handle any errors
                    Toast.makeText(getActivity(), exception.toString(), Toast.LENGTH_LONG).show();
                }
            });

        }
    });

当我按下按钮时，应该下载文件，但只创建了目录。

Answer 1

这是 firebase 下载的工作示例并检查下载路径，对象应该存在于存储桶中。

// Initialize Storage
        //storage
        mStorage = FirebaseStorage.getInstance("gs://<bucket_name>");
        mStorageRef = mStorage.getReference();

    final StorageReference downloadRef;
            downloadRef = mStorageRef.getRoot().child(downloadPath);

            try {
                File output = new File(Environment.getExternalStorageDirectory() + File.separator + Config.MY_VIDEOS_PATH);
                if (!output.exists()) {
                    output.mkdir();
                }
                localFile = new File(output, downloadId);
            } catch (Exception e) {
                e.printStackTrace();
            }


            // Download and get total bytes
            downloadRef.getFile(localFile)
                    .addOnProgressListener(new OnProgressListener<FileDownloadTask.TaskSnapshot>() {
                        @Override
                        public void onProgress(FileDownloadTask.TaskSnapshot taskSnapshot) {
                            showProgressNotification(1,title, "",
                                    taskSnapshot.getBytesTransferred(),
                                    taskSnapshot.getTotalByteCount());
                        }
                    })
                    .addOnSuccessListener(new OnSuccessListener<FileDownloadTask.TaskSnapshot>() {
                        @Override
                        public void onSuccess(FileDownloadTask.TaskSnapshot taskSnapshot) {
                            Log.d(TAG, "download:SUCCESS");
                            // Send success broadcast with number of bytes downloaded
                            broadcastDownloadFinished(downloadPath, taskSnapshot.getTotalByteCount());
                            showDownloadFinishedNotification(downloadPath, (int) taskSnapshot.getTotalByteCount());

                            // Mark task completed
                            taskCompleted();
                        }
                    })
                    .addOnFailureListener(new OnFailureListener() {
                        @Override
                        public void onFailure(@NonNull Exception exception) {
                            Log.w(TAG, "download:FAILURE", exception);
                            Log.w(TAG, "download:FAILURE", exception.getCause());

                            // Send failure broadcast
                            broadcastDownloadFinished(downloadPath, -1);
                            showDownloadFinishedNotification(downloadPath, -1);

                            // Mark task completed
                            taskCompleted();
                        }
                    });

让我们假设你的 image.jpg 在 photos 文件夹然后是 downloadPath photos/image.jpg