如何将firebase存储中的图像路径获取到firebase数据库

Question

大家好，每个人都在制作一个应用程序，它使用 firebaseDatabase 获取用户信息和 firebaseStorage 来保存图像，我想将上传到 firebaseStorage 的图像的路径放在用户信息下的 firebaseDatabase 中，这样我就可以像配置文件图片一样显示图像了我正在使用它来上传图像和 mainActivity 来显示图像。我确实在寻找解决方案并得到了一些解决方案，但它没有用，或者我不知道如何让它工作。我是安卓新手

上传图片

 public String getExtension(Uri uri) {
    ContentResolver contentResolver = getContentResolver();
    MimeTypeMap mimeTypeMap = MimeTypeMap.getSingleton();
    return mimeTypeMap.getMimeTypeFromExtension(contentResolver.getType(uri));
}

private void uploadImage() {
 StorageReference reference = mStorage.child(System.currentTimeMillis()+"."+getExtension(imageUri));


    uploadTask= reference.putFile(imageUri)
            .addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
                @Override
                public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {


                    // Get a URL to the uploaded content
                   // Uri downloadUrl = taskSnapshot.getDownloadUrl();

                    Toast.makeText(AddImageActivity.this,"Image Uploaded",Toast.LENGTH_SHORT).show();

                    Intent ii = new Intent(AddImageActivity.this,MainActivity.class);
                    startActivity(ii);
                    finish();

                }
            })
            .addOnFailureListener(new OnFailureListener() {
                @Override
                public void onFailure(@NonNull Exception exception) {
                    // Handle unsuccessful uploads
                    // ...
                }
            });

}

主要活动

 public class MainActivity extends AppCompatActivity {
 ImageView profilePic ;
 TextView nameProfile ;
  DatabaseReference databaseReference ;
 FirebaseUser fUser;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    profilePic=findViewById(R.id.imageProfile);
    nameProfile = findViewById(R.id.nameProfile);

   fUser=FirebaseAuth.getInstance().getCurrentUser();
   databaseReference = FirebaseDatabase.getInstance().getReference("Users").child(fUser.getUid());

    databaseReference.addValueEventListener(new ValueEventListener() {
        @Override
        public void onDataChange(@NonNull DataSnapshot snapshot) {
            User user = snapshot.getValue(User.class);
            nameProfile.setText(user.getName());
            Glide.with(getApplicationContext()).load(user.getImageURL()).into(profilePic);

        }

        @Override
        public void onCancelled(@NonNull DatabaseError error) {

        }
    });


}

}

Answer 1

对我有用

final StorageReference reference = mStorageReference.child(System.currentTimeMillis() + "." + getExtension(imageUri));
    reference.putFile(imageUri).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
        @Override
        public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {

            taskSnapshot.getStorage().getDownloadUrl()
                    .addOnSuccessListener(
                            new OnSuccessListener<Uri>() {
                                @Override
                                public void onSuccess(Uri uri) {
                                    String imageUrl = uri.toString();
                                 
                                }
                            }
                    );
        }
    });

Answer 2

 public void uploadfile(){
   if(uri!=null){
       final StorageReference filereference=storageReference.child(System.currentTimeMillis()+"."+getFileExtension(uri));

       filereference.putFile(uri).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
           @Override
           public void onSuccess(final UploadTask.TaskSnapshot taskSnapshot) {

            filereference.getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
                @Override
                public void onSuccess(Uri uri) {
                    Upload upload=new Upload(editText1.getText().toString(),uri.toString());
                    String str=databaseReference.push().getKey();
                    databaseReference.child(str).setValue(upload);

                    progressBar.setVisibility(View.INVISIBLE);
                    progressBar2.setVisibility(View.VISIBLE);
                    final Timer timer=new Timer();
                    TimerTask timerTask=new TimerTask() {
                        @Override
                        public void run() {
                            counter++;
                            progressBar2.setProgress(counter);
                            if (counter==100){
                                toast.show();
                                progressBar2.setVisibility(View.INVISIBLE);
                                counter=0;
                                timer.cancel();
                            }
                        }
                    };timer.schedule(timerTask,1,15);
                }
            });
           }
       }).addOnFailureListener(new OnFailureListener() {
           @Override
           public void onFailure(@NonNull Exception e) {

           }
       });
   }
   else {
       Toast.makeText(this, "No file selected", Toast.LENGTH_SHORT).show();
   }
}

Answer 3

你好，我的朋友，请像这样复制粘贴你的函数

private void uploadImage() {
   StorageReference reference = mStorage.child(System.currentTimeMillis()+"."+getExtension(imageUri));

uploadTask= reference.putFile(imageUri)
        .addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
            @Override
            public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {

               reference.getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
                                              @Override
                                                public void onSuccess(Uri uri) {
                                                        
                                                        String uploadedImageUrl = uri.toString();
                                                        
            // Now you have your image in (uploadedImageUrl) variable so write your code to upload in firebaseDatabase and enjoy
                                                    }
                                                });

                Toast.makeText(AddImageActivity.this,"Image Uploaded",Toast.LENGTH_SHORT).show();

                Intent ii = new Intent(AddImageActivity.this,MainActivity.class);
                startActivity(ii);
                finish();

            }
        })
        .addOnFailureListener(new OnFailureListener() {
            @Override
            public void onFailure(@NonNull Exception exception) {
                // Handle unsuccessful uploads
                // ...
            }
        });

}