Firebase序列化问题[已更新] [英] Firebase Serialization Issues [UPDATED]
问题描述
昨晚我问过这个问题，但我认为我没有提供足够的信息，所以我会尝试更加彻底！
I asked this question last night but I don't think I offered enough information, so I am going to try to be a lot more thorough!
我是试图使其成为当用户注册我的应用程序时，他们的数据以及其他一些变量将保存在Firebase实时数据库中。当帐户尝试注册时，我会继续收到序列化错误。
I am trying to make it so that when a user registers for my app, their data along with some other variables will be saved in Firebase Realtime Database. I continue to get a serialization error when an account tries to register.
在com.google.firebase.database类上找不到要序列化的属性.obfuscated.zza $ 3
No properties to serialize found on class com.google.firebase.database.obfuscated.zza$3
我已经尝试了无数的东西来修复错误，但似乎没有任何东西真正修复它或取得任何进展修复它。这是我目前使用的注册方法。
And I have tried countless things to fix the error but nothing really seems to be fixing it or making any progress towards fixing it. This is the registration method I am using currently.
firebaseAuth.createUserWithEmailAndPassword(email, password).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
if (task.isSuccessful()) {
//start profile activity here
User users = new User(username, email, wins, losses, balance);
FirebaseDatabase.getInstance().getReference("Users")
.child(FirebaseAuth.getInstance().getCurrentUser().getUid())
.setValue(users)
.addOnCompleteListener
(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
if (task.isSuccessful()) {
Toast.makeText(RegisterActivity.this, "Registration successful.", Toast.LENGTH_SHORT).show();
startActivity(new Intent(RegisterActivity.this, HomePage.class ));
} else {
Toast.makeText(RegisterActivity.this, task.getException().getMessage(), Toast.LENGTH_SHORT).show();
progressDialog.hide();
}
}
});
} else {
Toast.makeText(RegisterActivity.this, "Registration not successful, please try again.", Toast.LENGTH_SHORT).show();
progressDialog.hide();
}
}
});
特别是在这段代码上调用错误
And specifically the error is being called on this part of the code
.setValue(users)
我确保我的所有变量都是公开的，并且我已经为所有内容添加了getter和setter（我不知道是否有必要）。
I have made sure all of my variables are public, and I have added getters and setters for everything as well (which I do not know if it is necessary).
My用户类看起来像这样
My User class looks like this
public User(String userName, String email, int wins, int losses, double balance) {
this.userName = userName;
this.email = email;
this.wins = wins;
this.losses = losses;
this.balance = balance;
}
我也启用了proguard，我添加了规则来保持我的用户类和我的RegisterActivity类。这些是我添加的规则
And I also have proguard enabled, and I have added rules to -keep my User class and my RegisterActivity class. These are the rules I added in
-keepattributes Signature
-keepclassmembers com.example.brent.fifty_fifty.** {
*;
}
-keep class com.example.brent.fifty_fifty.RegisterActivity
-keep class com.example.brent.fifty_fifty.User
-keep class * {
public private *;
}
我不确定我的规则是否正确，或者我是否有一些规则那里有不必要的规则，但这都是一个学习过程，所以如果出现任何问题或者您对如何解决错误有任何建议请告诉我！
I am not sure if I have my rules right, or if I have some unnecessary rules in there, but this is all a learning process so please let me know if anything looks wrong or you have a suggestion on how to fix the error!
对不起经常发布
我的User.class
My User.class
package com.example.brent.fifty_fifty;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;
public class User {
public String userName, email, specUserName;
public int wins, losses;
public double balance;
FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
String uid = user.getUid();
FirebaseDatabase database = FirebaseDatabase.getInstance();
DatabaseReference myRef = database.getReference("Users/"+uid);
public User() {
}
public User(String userName, String email, int wins, int losses, double balance) {
this.userName = userName;
this.email = email;
this.wins = wins;
this.losses = losses;
this.balance = balance;
}
public interface MyCallback{
void onSuccess(String userName);
}
public void getUserName(final MyCallback myCallback) {
myRef.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
specUserName = dataSnapshot.child("userName").getValue(String.class);
myCallback.onSuccess(specUserName);
}
@Override
public void onCancelled(DatabaseError databaseError) {
throw databaseError.toException();
}
});
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public int getWins() {
return wins;
}
public void setWins(int wins) {
this.wins = wins;
}
public int getLosses() {
return losses;
}
public void setLosses(int losses) {
this.losses = losses;
}
public double getBalance() {
return balance;
}
public void setBalance(double balance) {
this.balance = balance;
}
}
推荐答案
这种情况正在发生，因为您在用户类中添加了余额对象其类型为 BigDecimal 。与关于 Firebase实时数据库数据色彩的官方文档一样， BigDecimal 不是受支持的数据类型。要解决此问题，您应该将 balance 对象的te类型更改为支持的数据类型。我建议你把它改成 Double 。
This is happening because you have added in your User class the balance object which is of type BigDecimal. As in the official documentation regarding Firebase realtime databse data tyes, the BigDecimal is not a supported data type. To solve this, you should change te type of your balance object to a supported data type. I recommend you to change it to a Double.
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