Question

现在我使用以下代码从Storage of Firebase获取图片：

mStoreRef.child("photos/" + model.getBase64Image())
          .getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
                        @Override
                        public void onSuccess(Uri uri) {
                            // Got the download URL for 'photos/profile.png'

                        }
                    }).addOnFailureListener(new OnFailureListener() {
                        @Override
                        public void onFailure(@NonNull Exception exception) {
                            // Handle any errors
                            Toast.makeTextthis, "image not dowloaded", Toast.LENGTH_SHORT).show();
                        }
                    });

可以获得图片中显示的URL .. ???

Answer 1

请点击此链接 - https://firebase.google.com/docs/storage/android/download-files#download_data_via_url

    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'
            Uri downloadUri = taskSnapshot.getMetadata().getDownloadUrl();
            generatedFilePath = downloadUri.toString(); /// The string(file link) that you need
        }
    }).addOnFailureListener(new OnFailureListener() {
        @Override
        public void onFailure(@NonNull Exception exception) {
            // Handle any errors
        }
    });

Answer 2

在最新的Firebase版本上效果很好

UploadTask uploadTask = ref.putBytes(data);
uploadTask.addOnSuccessListener(new OnSuccessListener<TaskSnapshot>() {

        @Override
        public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
            taskSnapshot.getStorage().getDownloadUrl().addOnCompleteListener(
                    new OnCompleteListener<Uri>() {

                           @Override
                            public void onComplete(@NonNull Task<Uri> task) {
                            String fileLink = task.getResult().toString();
                            //next work with URL

                            }
                        });

Answer 3

过去，firebase使用getMetadata().getDownloadUrl()，今天他们使用getDownloadUrl()

应该这样使用：

.addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
    @Override
    public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
        String image = taskSnapshot.getDownloadUrl().toString());
    }
});

Answer 4

根据最新的firebase更改，以下是更新的代码：

File file = new File(String.valueOf(imageUri)); FirebaseStorage storage = FirebaseStorage.getInstance(); StorageReference storageRef = storage.getReference().child("images");

    storageRef.child(file.getName()).putFile(imageUri)
            .addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
                @Override
                public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
                    pd.dismiss();
                    Toast.makeText(MyProfile.this, "Image Uploaded Successfully", Toast.LENGTH_SHORT).show();
                    Task<Uri> downloadUri = taskSnapshot.getStorage().getDownloadUrl();

                   if(downloadUri.isSuccessful()){
                    String generatedFilePath = downloadUri.getResult().toString();
                    System.out.println("## Stored path is "+generatedFilePath);
                }}
            })
            .addOnFailureListener(new OnFailureListener() {
                @Override
                public void onFailure(@NonNull Exception e) {
                    pd.dismiss();                     
                }
            });
}

Answer 5

不建议使用上述方法taskSnapshot.getMetadata().getDownloadUrl();，并且将substitute作为替代方法：

final StorageReference ref = storageRef.child("images/mountains.jpg");
uploadTask = ref.putFile(file);

Task<Uri> urlTask = uploadTask.continueWithTask(new 
  Continuation<UploadTask.TaskSnapshot, Task<Uri>>() {
     @Override
      public Task<Uri> then(@NonNull Task<UploadTask.TaskSnapshot> task) throws Exception {
    if (!task.isSuccessful()) {
        throw task.getException();
    }

    // Continue with the task to get the download URL
    return ref.getDownloadUrl();
}
}).addOnCompleteListener(new OnCompleteListener<Uri>() {
@Override
public void onComplete(@NonNull Task<Uri> task) {
    if (task.isSuccessful()) {
        Uri downloadUri = task.getResult();
    } else {
        // Handle failures
        // ...
    }
  }
});

Answer 6

这就是我在Kotlin android中获得下载链接的方式。

 ref.putFile(filePath!!)
            .addOnSuccessListener {

                val result = it.metadata!!.reference!!.downloadUrl;
                result.addOnSuccessListener {

                   var imageLink = it.toString()


                }
            }

Answer 7

 //kotlin

var uri:Uri
    uploadTask.addOnSuccessListener {t ->
        t.metadata!!.reference!!.downloadUrl.addOnCompleteListener{task ->
            uri = task.result!!

        }
    }

Answer 8

是可能的！我的一些捷径技巧不是从一些令人毛骨悚然的复杂代码行，而是从Kotlin的Firebase存储中获取下载URL

注意：基于最新的Firebase版本，没有 getdownloadurl（）或 getresult（）方法（它们是这次贬值的牺牲品）

因此，我在这里使用的技巧是通过从 taskSnapshot对象调用 UploadSessionUri ，依次返回下载网址和上载类型令牌（一个仅在较短的时间范围内可用）和其他一些东西。

由于我们仅需要下载URL，因此我们可以使用子字符串获取downloadurl并与 alt = media 结合以查看图像。

var du:String?=null
var du1:String?=null
var du3:String="&alt=media"
val storage= FirebaseStorage.getInstance()
        var storagRef=storage.getReferenceFromUrl("gs://hola.appspot.com/")
        val df= SimpleDateFormat("ddMMyyHHmmss")
        val dataobj= Date()
        val imagepath=SplitString(myemail!!)+"_"+df.format(dataobj)+".jpg"
        val imageRef=storagRef.child("imagesPost/"+imagepath)
        val baos= ByteArrayOutputStream()
        bitmap.compress(Bitmap.CompressFormat.JPEG,100,baos)
        val data=baos.toByteArray()
        val uploadTask=imageRef.putBytes(data)
        uploadTask.addOnFailureListener{
            Toast.makeText(applicationContext,"Failed To Upload", Toast.LENGTH_LONG).show()
        }.addOnSuccessListener { taskSnapshot ->
            imageRef.downloadUrl.addOnCompleteListener (){
                du=taskSnapshot.uploadSessionUri.toString()
                du1=du!!.substring(0,du!!.indexOf("&uploadType"))
                downloadurl=du1+du3
                Toast.makeText(applicationContext,"url"+downloadurl, Toast.LENGTH_LONG).show()
            }
        }

希望有帮助！。

Answer 9

这对我来说具有依赖性-实现'com.google.firebase：firebase-storage：19.1.0'

ref.putFile(iconUriLocalFilePath)
        .addOnSuccessListener(  
            new OnSuccessListener<UploadTask.TaskSnapshot>() {
            @Override
            public void onSuccess(
                    UploadTask.TaskSnapshot taskSnapshot)
            {
                Task<Uri> uri = ref.getDownloadUrl();
                String iconPathFirebase = uri.getResult().toString();
            }
    });

Answer 10

这应该是科特林应该做的事情您需要添加onCompleteListener

putFile(file).addOnSuccessListener {

            it.storage.downloadUrl.addOnCompleteListener {
            //then you can call it.result.toString()
            }
}

Answer 11

我尝试了此操作，并获得了在imageview上进行查看的链接：

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'
        uri.toString();
    }
}).addOnFailureListener(new OnFailureListener() {
    @Override
    public void onFailure(@NonNull Exception exception) {
        // Handle any errors
    }
});

Answer 12

如果您已经具有基于URL的下载基础结构，或者只想共享一个URL，则可以通过在存储引用上调用getDownloadUrl（）方法来获取文件的下载URL。

// Create a storage reference from our app
val storageRef = storage.reference

 storageRef.child("users/me/profile.png").downloadUrl.addOnSuccessListener {
            // Got the download URL for 'users/me/profile.png'
        }.addOnFailureListener {
            // Handle any errors
        }

firebase documentation

Firebase如何从firebase存储中获取Image Url？

12 个答案: