我的应用程序出现以下错误： com.google.firebase.database.DatabaseException：无法将 java.lang.Long 类型的值转换为字符串
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：
如果有人可以帮助我找到我的错误，谢谢。
编辑：游戏类：
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：用户类
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 = "";
}
最重要的是，我还有另一个类，其中有一个用户类的 dataSnapshot.getValue。它工作得很好，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());
// ...
}
});
}
所以最后这段代码完美无缺，那么为什么这个工作而不是 DataSnapshot.getValue(Game.class)？谢谢！