Question

我是Firebase的新手，我正在阅读教程，并练习Firebase连接。我想在我的Firebase中添加数据。但不知怎的，它没有添加。我不知道问题是什么。 Firebase已成功连接。这是我的主要活动。

package com.example.sayan.appfire;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

import com.firebase.client.Firebase;

public class MainActivity extends AppCompatActivity {
    private Button msendData;
    private Firebase mRef;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Firebase.setAndroidContext(this);
        mRef = new Firebase("https://appfire-713c6.firebaseio.com/");
        msendData = (Button)findViewById(R.id.sendData);


        msendData.setOnClickListener(new View.OnClickListener(){

            @Override
            public void onClick(View view) {
                Firebase mRefChild = mRef.child("name");
                mRefChild.setValue("Sayan");
            }
        });
    }
}

Answer 1

尝试这种方式在firebase数据库上执行操作

private void createUser(String name, String email) {
        // TODO
        // In real apps this userId should be fetched
        // by implementing firebase auth
        if (TextUtils.isEmpty(userId)) {
            userId = mFirebaseDatabase.push().getKey();
        }

        User user = new User(name, email);

        mFirebaseDatabase.child(userId).setValue(user);

        addUserChangeListener();
    }

有关详情，请查看：

https://www.androidhive.info/2016/10/android-working-with-firebase-realtime-database/

Answer 2

    DatabaseReference mDatabase =         
    FirebaseDatabase.getInstance().getReference();
    mDatabase.child("tasks").push().setValue(firebaseData, new 
    DatabaseReference.CompletionListener() {
    @Override
    public void onComplete(DatabaseError databaseError, DatabaseReference 
    databaseReference) {
    //Problem with saving the data
    if (databaseError != null) {

    } else {
            //Data uploaded successfully on the server

           }

        }
});

数据未插入我的Firebase中

2 个答案: