Firebase Java从firebase存储中保存文件，并知道外部存储器的保存路径

FirebaseStorage storage = FirebaseStorage.getInstance();

StorageReference storageRef = storage.getReference();

StorageReference fileRef = storageRef.child("path/to/file.jpg");

File file = new File("path/to/local/file.jpg");
UploadTask uploadTask = fileRef.putFile(Uri.fromFile(file));

uploadTask.addOnProgressListener(new OnProgressListener<UploadTask.TaskSnapshot>() {
    @Override
    public void onProgress(UploadTask.TaskSnapshot taskSnapshot) {
        // 上传进度
        double progress = (100.0 * taskSnapshot.getBytesTransferred()) / taskSnapshot.getTotalByteCount();
        System.out.println("Upload is " + progress + "% done");
    }
}).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
    @Override
    public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
        // 上传成功
        System.out.println("Upload successful");
    }
}).addOnFailureListener(new OnFailureListener() {
    @Override
    public void onFailure(@NonNull Exception exception) {
        // 上传失败
        System.out.println("Upload failed: " + exception.getMessage());
    }
});

File externalStorageDir = Environment.getExternalStorageDirectory();
String externalStoragePath = externalStorageDir.getAbsolutePath();
System.out.println("External storage path: " + externalStoragePath);