Question

我收到此错误：

致命的例外：主要 com.google.firebase.database.DatabaseException：类java.util.UUID缺少不带参数的构造函数在com.google.android.gms.internal.zzanp $ zza.zze（未知来源）在com.google.android.gms.internal.zzanp $ zza.zzcg（未知来源）在com.google.android.gms.internal.zzanp.zze（未知来源）在com.google.android.gms.internal.zzanp.zzb（未知来源）在com.google.android.gms.internal.zzanp.zza（未知来源）在com.google.android.gms.internal.zzanp.zzb（未知来源）在com.google.android.gms.internal.zzanp $ zza.zze（未知来源）在com.google.android.gms.internal.zzanp $ zza.zzcg（未知来源）在com.google.android.gms.internal.zzanp.zze（未知来源）在com.google.android.gms.internal.zzanp.zzb（未知来源）在com.google.android.gms.internal.zzanp.zza（未知来源）在com.google.android.gms.internal.zzanp.zzb（未知来源）在com.google.android.gms.internal.zzanp $ zza.zze（未知来源）在com.google.android.gms.internal.zzanp $ zza.zzcg（未知来源）在com.google.android.gms.internal.zzanp.zze（未知来源）在com.google.android.gms.internal.zzanp.zzb（未知来源）在com.google.android.gms.internal.zzanp.zza（未知来源）在com.google.firebase.database.DataSnapshot.getValue（未知来源） at com.example.brewc.react.main.Fragments.ContactsPageFragment $ 2.onDataChange（ContactsPageFragment.java:109）在com.google.firebase.database.Query $ 1.onDataChange（未知来源）在com.google.android.gms.internal.zzakg.zza（未知来源）在com.google.android.gms.internal.zzalg.zzcxk（未知来源）在com.google.android.gms.internal.zzalj $ 1.run（未知来源）在android.os.Handler.handleCallback（Handler.java:746）在android.os.Handler.dispatchMessage（Handler.java:95）在android.os.Looper.loop（Looper.java:148）在android.app.ActivityThread.main（ActivityThread.java:5443） at java.lang.reflect.Method.invoke（Native Method）在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:728）在com.android.internal.os.ZygoteInit.main（ZygoteInit.java:618）

以下是错误行：

User user = dataSnapshot.getValue(User.class);

User.java

import android.graphics.Bitmap;
import android.util.Base64;

import com.microsoft.projectoxford.face.contract.Face;

import java.io.ByteArrayOutputStream;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

public class User {
    private String email, userID, displayName, phoneNumber, profilePicture, bio;
    private Face details;
    private ArrayList<Face> database;
    private ArrayList<String> contacts;

    public User() {}

    public User(String email,
                String userID,
                String displayName,
                Face details,
                String phoneNumber,
                String profliePicture) {
        this.email = email.trim();
        this.userID = userID;
        this.displayName = displayName.trim();
        this.details = details;
        this.database = new ArrayList<Face>();
        this.contacts = new ArrayList<String>();
        this.phoneNumber = phoneNumber.trim().replaceAll("[^0-9]", "");
        this.profilePicture = profliePicture;
        this.bio = "";
    }

    public String getEmail() {
        return this.email;
    }

    public String getUserID() {
        return this.userID;
    }

    public String getDisplayName() {
        return this.displayName;
    }

    public Face getDetails() {
        return this.details;
    }

    public ArrayList<Face> getDatabase() {
        return this.database;
    }

    public ArrayList<String> getContacts() {
        return this.contacts;
    }

    public String getPhoneNumber() {
        return this.phoneNumber;
    }

    public String getProfilePicture() {
        return this.profilePicture;
    }

    public String getBio() {
        return this.bio;
    }

    public void setBio(String message) {
        this.bio = message;
    }

    public void addContact() {
        this.contacts.add("DvMzHKD0fdbjAVUCw9a5XJZEeYb2");
    }
}

这是Microsoft的Face类结构：

public class Face {
    public UUID faceId;
    public FaceRectangle faceRectangle;
    public FaceLandmarks faceLandmarks;
    public FaceAttribute faceAttributes;

    public Face() {
    }
}

我知道firebase需要一个空的构造函数，所以我该如何解决这个问题呢？

Firebase使用UUID成员序列化类

0 个答案: