如何检索用户数据android firebase

Question

请大家在用户保存某些内容时如何从Firebase中检索数据，然后他要检索它，这就是保存代码

        fireapp=new Firebase("https://training-a3c4e.firebaseio.com/User");
        btn1=findViewById(R.id.button);
        btn2=findViewById(R.id.button2);
        ed1=findViewById(R.id.editText);
        ed2=findViewById(R.id.editText3);

        btn1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
               String data1=ed1.getText().toString();
               String data2=ed2.getText().toString();

                Firebase getRoot=fireapp.child(data2);
                // Firebase.goOffline();
                getRoot.setValue(data1);
            }
        }

Answer 1

您可以执行以下操作

fireapp=new Firebase("https://training-a3c4e.firebaseio.com/User").child(data2);
fireapp.addListenerForSingleValueEvent(new ValueEventListener() {
        @Override
        public void onDataChange(DataSnapshot dataSnapshot) {
            // your data will be here in dataSnapshot

        }
    });