數據快照失敗轉換

Question

我目前正在使用firebase存儲所有信息，我使用firebase身份驗證進行了用戶註冊，並將該用戶擴展爲重用身份驗證中創建的ID的數據庫，現在我需要獲取所有用戶並進行比較他的手機與手機中插入與用戶和retrive特定用戶，如果號碼匹配，所以我這樣做：

代碼

FirebaseDatabase.getInstance().getReference().child("Users") 
       .addListenerForSingleValueEvent(new ValueEventListener() { 
        @Override 
        public void onDataChange(DataSnapshot dataSnapshot) { 
         for (DataSnapshot snapshot : dataSnapshot.getChildren()) { 
          Log.d("snapshot", String.valueOf(snapshot)); 
          Log.d("snap",String.valueOf(snapshot.getValue(User.class))); 
          User user = snapshot.getValue(User.class); 
          if(number.equals(String.valueOf(user.getPhone()))){ 
           userFriend = user; 
          } 

         } 

         if(userFriend == null){ 
          //to do snackbar 
         } 
        } 

User類

public class User { 

    private String id; 
    private String username; 
    private int age = -1; 
    private String phone; 
    private int gamesPlayed = 0; 
    private ArrayList<User> friends = new ArrayList<User>(); 

    // CONSTRUCTOR 
    public User() { 

    } 

    public User(String username) { 
     this.username = username; 
    } 

    // GETTERS & SETTERS 
    public String getUsername() { return username; } 
    public void setUsername(String username) { this.username = username; } 

    public User(String id, String username, int age, String phone, int gamesPlayed, ArrayList<User> users) { 
     this.id = id; 
     this.username = username; 
     this.age = age; 
     this.phone = phone; 
     this.gamesPlayed = gamesPlayed; 
     this.friends = users; 
    } 

    public int getAge() { return age; } 
    public void setAge(int age) { this.age = age; } 

我的數據庫結構：

這裏是我所得到的堆棧跟蹤：

04-20 16:06:04.070 30972-30972/com.esmad.pdm.friendlymanager E/AndroidRuntime: FATAL EXCEPTION: main 
                       Process: com.esmad.pdm.friendlymanager, PID: 30972 
    com.google.firebase.database.DatabaseException: Failed to convert value of type java.lang.Long to String 
     at com.google.android.gms.internal.zzbtg.zzaF(Unknown Source) 
     at com.google.android.gms.internal.zzbtg.zzb(Unknown Source) 
     at com.google.android.gms.internal.zzbtg.zza(Unknown Source) 
     at com.google.android.gms.internal.zzbtg.zzb(Unknown Source) 
     at com.google.android.gms.internal.zzbtg$zza.zze(Unknown Source) 
     at com.google.android.gms.internal.zzbtg$zza.zzaH(Unknown Source) 
     at com.google.android.gms.internal.zzbtg.zze(Unknown Source) 
     at com.google.android.gms.internal.zzbtg.zzb(Unknown Source) 
     at com.google.android.gms.internal.zzbtg.zza(Unknown Source) 
     at com.google.firebase.database.DataSnapshot.getValue(Unknown Source) 
     at com.esmad.pdm.friendlymanager.Friends$1.onDataChange(Friends.java:61) 
     at com.google.firebase.database.Query$1.onDataChange(Unknown Source) 
     at com.google.android.gms.internal.zzbpx.zza(Unknown Source) 
     at com.google.android.gms.internal.zzbqx.zzZS(Unknown Source) 
     at com.google.android.gms.internal.zzbra$1.run(Unknown Source) 
     at android.os.Handler.handleCallback(Handler.java:751) 
     at android.os.Handler.dispatchMessage(Handler.java:95) 
     at android.os.Looper.loop(Looper.java:154) 
     at android.app.ActivityThread.main(ActivityThread.java:6119) 
     at java.lang.reflect.Method.invoke(Native Method) 
     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886) 
     at com.android.internal.os.ZygoteInit.main 

（ZygoteInit.java:776）

錯誤與此行有關：User user = snapshot.getValue(User.class);

我懷疑它對我構建我的用戶模型和檢索的數據的方式有所影響，但某些內容不兼容。我有2 int在我的模型gamesPlayed和年齡，但是當我將用戶傳遞到快照我不知道如何CAS 2特定的值，所以我可以通過他們做我需要redifine用戶實例嗎？或者是一切正常，請幫助我很困惑：/`

Answer 1

在您的用戶類中您的手機字段必須是Long類型。