Firebase 数据库 getValue 问题

Question

我的应用出现以下错误： com.google.firebase.database.DatabaseException: 无法将类型 java.lang.Long 的值转换为字符串

此错误发生在以下行：mGame = dataSnapshot.getValue(Game.class) 这是我的代码：

//create datarefence of only 1 game namely the current game
    specificGameRef =mDatabase.child("games").child(-KhmBnF9vTLJSgNBcPqE);
    specificGameRef.addListenerForSingleValueEvent(new ValueEventListener() {
        @Override
        public void onDataChange(DataSnapshot dataSnapshot) {

            mGame =dataSnapshot.getValue(Game.class);

        }
        @Override
        public void onCancelled(DatabaseError databaseError) {
            // Getting Post failed, log a message
            Log.w(TAG, "loadPost:onCancelled", databaseError.toException());
            // ...
        }
    });

这是我来自 firebase 数据库的 json 代码：

如果有人能帮助我发现我的错误，谢谢。

编辑：游戏class：

public class Game {
//firebase
private FirebaseAuth mAuth;
private FirebaseAuth.AuthStateListener mAuthListener;
private DatabaseReference mDatabase;

FirebaseUser user;
User mUser;
private String creatorName;
private String key;
private int day;
private int month;
private int year;
private int clockHours;
private int clockMinutes;
private int durationMin;
private int durationMax;
private String creatorId;


public Game() //An empty constructor for datastorage of Firebase
{

}

public Game(String creatorId) {


    this.creatorId = creatorId;
    key = getKey();
    day = getDay();
    month = getMonth();
    year = getYear();
    clockHours = getClockHours();
    clockMinutes = getClockMinutes();
    durationMin = getDurationMin();
    durationMax = getDurationMax();

}

编辑：用户class

public class User {
//firebase authentification system
private FirebaseAuth mAuth;
private FirebaseAuth.AuthStateListener mAuthListener;
private DatabaseReference mDatabase;

String userId;
String mUsername;
String email;
int age;
int stars;
int badReputation;
String gender;
int birthYear;
int birthMonth;
int birthDay;

public User()
{

}

public User(String userId,String mUsername,String email) {

    mDatabase = FirebaseDatabase.getInstance().getReference();

    this.userId = userId;
    this.mUsername = mUsername;
    age = getAge();
    stars = 0;
    this.email=email;
    badReputation = 0;
    gender = "";
}

除此之外，我还有另一个 class，其中 dataSnapshot.getValue 是用户 class。而且效果很好，这是怎么回事？？这是代码：

public void retrieveUser()
{
    //create datarefence of only 1 user namely the current user
    DatabaseReference specificCreatorRef =mDatabase.child("users").child(user.getUid());
    specificCreatorRef.addListenerForSingleValueEvent(new ValueEventListener() {
        @Override
        public void onDataChange(DataSnapshot dataSnapshot) {

            //Now retrieving the current user and putting it in object mUser
            mUser = dataSnapshot.getValue(User.class);
            Log.w(TAGESS, "Print  STARS of current mUSer: " + mUser.getStars());
            creatorGender =mUser.getGender();
        }
        @Override
        public void onCancelled(DatabaseError databaseError) {
            // Getting Post failed, log a message
            Log.w(TAG, "loadPost:onCancelled", databaseError.toException());
            // ...
        }
    });
}

所以这最后一个代码工作完美，那么为什么这个工作而不是 DataSnapshot.getValue(Game.class)？谢谢！

Answer 1

感谢您的帮助，但经过 3 天的努力，我找到了出错的行。我还是不知道为什么。

在游戏中 class 我有一些吸气剂和 setters，当用没有使用 Integer.parsInt 的代码替换 clockHours 的 setter 时，它起作用了....!

 public void setClockHours(String clockHours){

    this.clockHours = Integer.parseInt(clockHours);
}

谢谢你的时间

Firebase 数据库 getValue 问题

Firebase database getValue issue

android

exception

firebase

firebase-realtime-database

getvalue