如何在最新版本中使用getdownloadurl? [英] How to use getdownloadurl in recent versions?

问题描述

                Uri downloaduri=taskSnapshot.getDownloadUrl();//here i cant use getdownloadurl() function
                DatabaseReference new_prod=db.push();
                new_prod.child("product name").setValue(prod_name);
                new_prod.child("product price").setValue(prod_price);
                new_prod.child("available stock").setValue(prod_quan);
                new_prod.child("product image").setValue(downloaduri);
                pd.dismiss();//fragments code

我无法使用getdownloadurl.我已经将图像存储在Firebase存储器中了，这是限制使用getdownloadurl的片段吗?我的动机是要进行查询以存储在firebase中.请帮助我.

I was unable to use getdownloadurl .I have already stored image in the firebase storage.Is it the fragment that is restricting the use of getdownloadurl? My motive is to make a query to store in firebase.please help me.

推荐答案

在最新版本的Firebase Storage SDK中，已删除了taskSnapshot.getDownloadUrl()方法.您需要立即从StorageReference获取下载URL.

The taskSnapshot.getDownloadUrl() method was removed in recent versions of the Firebase Storage SDK. You will need to instead get the download URL from the StorageReference now.

调用StorageReference.getDownloadUrl()会返回一个Task，因为它需要从服务器检索下载URL.因此，您需要一个完成侦听器来获取实际的URL.

Calling StorageReference.getDownloadUrl() returns a Task, since it needs to retrieve the download URL from the server. So you'll need a completion listener to get the actual URL.

从有关下载文件的文档:

 storageRef.child("users/me/profile.png").getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
    @Override
    public void onSuccess(Uri uri) {
        // Got the download URL for 'users/me/profile.png' in uri
        System.out.println(uri.toString());
    }
}).addOnFailureListener(new OnFailureListener() {
    @Override
    public void onFailure(@NonNull Exception exception) {
        // Handle any errors
    }
});

或者，如果您在上传后立即获得下载网址(例如您的情况)，则第一行可能是这样:

Alternatively that first line could be this if you're getting the download URL right after uploading (as in your case):

taskSnapshot.getStorage().getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {

另请参阅:

• Firebase Storage的getDownloadUrl()方法无法解决
• 错误:找不到符号com.google.firebase.storage.UploadTask.TaskSnapshot类型的getDownloadUrl()方法
• Firebase文档中上传文件并获取文件下载网址

• Firebase Storage getDownloadUrl() method can't be resolved
• Error: cannot find symbol method getDownloadUrl() of type com.google.firebase.storage.UploadTask.TaskSnapshot
• The example in the Firebase documentation on uploading a file and getting its download URL

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