从firebase存储和实时数据库获取图像

Question

所以，我想让用户同时上传多个图像到firebase存储。我已经成功地完成了这部分，但现在我想要取回图像。一开始，我上传一个图像给每个用户，并将图像id保存到实时数据库中，这样就很容易通过图像id检索回图像。但是现在我如何为每个用户保存多个图像到实时数据库我不能使用相同的子名，因为它将被替换为旧的。有什么想法吗？？

上载图像并在实时数据库上设置id：

private void Fileuploader() throws FileNotFoundException {
        String imageid;

        progress.showProgress(profuctadd.this,"Loading...",false);
        DatabaseHelper databaseHelper = new DatabaseHelper(profuctadd.this);
        Cursor getimage = databaseHelper.GetPath();
        int count = 0;
        while (getimage.moveToNext()){
            Bitmap bm = BitmapFactory.decodeFile(getimage.getString(0));
            ByteArrayOutputStream out = new ByteArrayOutputStream();
            bm.compress(Bitmap.CompressFormat.JPEG, 35, out);
            imageid = arabic.getText().toString()+"-"+System.currentTimeMillis()+"_"+(count++)+"."+getExtension(uri);
            System.out.println("IMAGES UPLOADEDDDD: "+ imageid);
            String id = getIntent().getStringExtra("storeid");
            member.setImageid(imageid);
            reference.child(id).child(arname).setValue(member);
            byte[] data = out.toByteArray();
            StorageReference Ref = mStorageRef.child(imageid);
            Ref.putBytes(data)
                    .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(profuctadd.this,"Image uploaded",Toast.LENGTH_LONG).show();
                            progress.hideProgress();
                            Intent intent = new Intent(profuctadd.this,showProducts.class);
                            intent.putExtra("spec",getIntent().getStringExtra("spec"));
                            intent.putExtra("storeid",getIntent().getStringExtra("storeid"));
                            startActivity(intent);
                            DatabaseHelper mDatabaseHelper = new DatabaseHelper(profuctadd.this);
                            Cursor cursor2 = mDatabaseHelper.DeleteDataOfTableImagesAr();
                            cursor2.moveToNext();
                        }
                    })
                    .addOnFailureListener(new OnFailureListener() {
                        @Override
                        public void onFailure(@NonNull Exception exception) {
                            // Handle unsuccessful uploads
                            // ...
                            Toast.makeText(profuctadd.this,"Failed",Toast.LENGTH_LONG).show();
                        }
                    });

        }





    }

我的firebase数据库：

Answer 1

您可以在images节点中保存多个特定用户的图像。

DatabaseReference dr =  FirebaseDatabase.getInstance().getReference("tL131);

 dr.child("images").push().setValue(String.ValueOf(taskSnapshot.getDownloadUrl()));