com.google.firebase.database.DatabaseException：无法将 java.lang.Boolean 类型的值转换为 String 这是关于什么的？

Question

应用程序工作正常，但当我启动给定的活动时它开始崩溃

private void loadSpins() {
    reference.child(FirebaseAuth.getInstance().getUid()).addValueEventListener(new ValueEventListener() {
        @Override
        public void onDataChange(@NonNull DataSnapshot snapshot) {
            UserModelTask modelTask = snapshot.getValue(UserModelTask.class);
            if (snapshot.exists()) {
                currentSpin = modelTask.getSpins();
                binding.currentSp.setText(String.valueOf(currentSpin));
            }
        }

        @Override
        public void onCancelled(@NonNull DatabaseError error) {

        }
    });
}

 FATAL EXCEPTION: main Process: com.example.cashapp, PID: 1777 com.google.firebase.database.DatabaseException: Failed to convert value of type java.lang.Boolean to String at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.convertString(CustomClassMapper.java:426) at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.deserializeToClass(CustomClassMapper.java:217) at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.deserializeToType(CustomClassMapper.java:179) at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$100(CustomClassMapper.java:48) at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.deserialize(CustomClassMapper.java:593) at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.deserialize(CustomClassMapper.java:563) at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.convertBean(CustomClassMapper.java:433) at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.deserializeToClass(CustomClassMapper.java:232) at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.convertToCustomClass(CustomClassMapper.java:80) at com.google.firebase.database.DataSnapshot.getValue(DataSnapshot.java:202) at com.example.cashapp.SpinnerActivity$3.onDataChange(SpinnerActivity.java:191) at com.google.firebase.database.core.ValueEventRegistration.fireEvent(ValueEventRegistration.java:75) at com.google.firebase.database.core.view.DataEvent.fire(DataEvent.java:63) at com.google.firebase.database.core.view.EventRaiser$1.run(EventRaiser.java:55) at android.os.Handler.handleCallback(Handler.java:942) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loopOnce(Looper.java:201) at android.os.Looper.loop(Looper.java:288) at android.app.ActivityThread.main(ActivityThread.java:7872) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:936)

UserModelTask.class for this code

        private int scratch, spins;
        private String referCode, redeemStatus;
    
        public UserModelTask(int spins, String scratch, String referCode, String redeemStatus) {
            this.spins = spins;
            this.referCode = referCode;
            this.redeemStatus = redeemStatus;
    
        }
    
        public UserModelTask() {
        }
    
        public int getSpins() {
            return spins;
        }
    
        public void setSpins(int spins) {
            this.spins = spins;
        }
        public String getReferCode() {
            return referCode;
        }
        public String getRedeemStatus() {
            return redeemStatus;
        }
    
        public void setRedeemStatus(String redeemStatus) {
            this.redeemStatus = redeemStatus;
        }
    
        public void setReferCode(String referCode) {
            this.referCode = referCode;
        }
    
    }

正如我之前所说，它工作正常，现在即使我重置了数据库，它也开始让我崩溃

到底发生了什么以及我应该做什么

Answer 1

你确定吗

snapshot.getValue(UserModelTask.class)

？我不确定您是否可以从 firebase 获取除标准类型（如布尔字符串）以外的类型