无法从Firebase上的存储参考获取URI [英] Unable to get URI from storage reference on Firebase

问题描述

我正在尝试获取存储在Firebase存储中的图像URI，以便使用其他方法进行处理.我正在使用以下内容:

I'm trying to get an image URI that is stored in Firebase storage, in order to process it using another method. I'm using the following:

    FirebaseStorage storage = FirebaseStorage.getInstance();
    StorageReference storageRef = storage.getReferenceFromUrl(this.getString(R.string.storage_path));
    Uri uri = storageRef.child("groups/pizza.png").getDownloadUrl().getResult();

并收到错误消息"java.lang.IllegalStateException:任务尚未完成"

and getting an error "java.lang.IllegalStateException: Task is not yet complete"

推荐答案

您可以通过以下方式获取文件的下载URL:

You can get the download URL for a file with:

storageRef.child("groups/pizza.png").getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
    @Override
    public void onSuccess(Uri uri) {
        // TODO: handle uri
    }
}).addOnFailureListener(new OnFailureListener() {
    @Override
    public void onFailure(@NonNull Exception exception) {
        // Handle any errors
    }
});

有关通过URL下载数据的信息，请参见 Firebase文档

See the Firebase documentation for downloading data via a URL.

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