Firestore：在 class 上找不到要序列化的属性

Question

注：

请不要将此问题标记为重复，因为我已经看过类似的问题及其答案。

错误：

java.lang.RuntimeException: No properties to serialize found on class com.appz.abhi.shudhbatter.b.c
at com.google.firebase.firestore.g.l$a.(Unknown Source)
at com.google.firebase.firestore.g.l.a(Unknown Source)
at com.google.firebase.firestore.g.l.b(Unknown Source)
at com.google.firebase.firestore.g.l.b(Unknown Source)
at com.google.firebase.firestore.g.l.a(Unknown Source)
at com.google.firebase.firestore.ah.b(Unknown Source)
at com.google.firebase.firestore.b.a(Unknown Source)
at com.appz.abhi.shudhbatter.view.onboarding.a.a.a.a(Unknown Source)
at com.appz.abhi.shudhbatter.view.onboarding.a.a.a.lambdab6vrtW7GJri_HgEDiOk1aRbrY(Unknown Source)
at com.appz.abhi.shudhbatter.view.onboarding.a.a.-$$Lambda$ab6vrtW7GJri_HgEDiOk1aRbrY.onClick(lambda)
at android.view.View.performClick(View.java:5647)
at android.view.View$PerformClick.run(View.java:22465)
at android.os.Handler.handleCallback(Handler.java:754)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:163)
at android.app.ActivityThread.main(ActivityThread.java:6238)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:794)

类似问题：

No properties to serialize found on class com.contentful.vault.Asset

proguard-rules.pro:

-assumenosideeffects class android.util.Log {
    public static *** d(...);
}

# Add this global rule
-keepattributes Signature

-keep class android.support.v7.widget.RecyclerView { *; }

# Keep custom model classes
-keepclassmembers class com.mypackage.model.** { *; }
-keep class com.mypackage.model.** { *; }
-keep class com.mypackage.util.** { *; }

使用映射文件，我发现错误是由以下模型引起的class：

User.java:

package com.mypackage.model;

import java.io.Serializable;

public class User implements Serializable {

    //  Data
    private Long phone;
    private String uid, name, mail, apartmentName, doorNo;
    private UserType userType;

    public User() {
        userType = UserType.USER;
    }

    public Long getPhone() {
        return phone;
    }

    public void setPhone(Long phone) {
        this.phone = phone;
    }

    public String getUid() {
        return uid;
    }

    public void setUid(String uid) {
        this.uid = uid;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getMail() {
        return mail;
    }

    public void setMail(String mail) {
        this.mail = mail;
    }

    public String getApartmentName() {
        return apartmentName;
    }

    public void setApartmentName(String apartmentName) {
        this.apartmentName = apartmentName;
    }

    public String getDoorNo() {
        return doorNo;
    }

    public void setDoorNo(String doorNo) {
        this.doorNo = doorNo;
    }

    public UserType getUserType() {
        return userType;
    }

    public void setUserType(UserType userType) {
        this.userType = userType;
    }
}

UserType.java:

package com.mypackage.model;

public enum UserType {
    USER, ADMIN, DELIVERY
}

Answer 1

以上错误在执行以下操作后得到解决：

清理并重建项目。
正在删除所有混淆规则。
在每个模型 class 开头添加 @Keep。

Firestore：在 class 上找不到要序列化的属性

Firestore : No properties to serialize found on class

android

android-proguard