Android通用扩展的前卫规则

Question

我已经创建了一个gson扩展来序列化和反序列化对象，如下代码所示。

/**
 * To serialize the object to json string
 */

    fun Any.toGson(): String {
        return Gson().toJson(this)
    }

/**
 * To deserialize the json string to object of type <T>
 */

    fun <T>String.toObject() : T{
        return Gson().fromJson(this, object : TypeToken<T>() {}.type)
    } 

当我在发布模式下构建项目时，由于前卫规则，应用程序崩溃。

我已经添加了防护规则-keepattribute签名。尽管如此，这款应用还是在崩溃。

2020-11-24 08:47:28.448 8215-8215/？E/可参数堆栈跟踪错误:可抛出的堆栈跟踪:在libcore.reflect.TypeVariableImpl.resolve(TypeVariableImpl.java:111) at libcore.reflect.TypeVariableImpl.getGenericDeclaration(TypeVariableImpl.java:125) at libcore.reflect.TypeVariableImpl.hashCode(TypeVariableImpl.java:47) at b.c.a.v.a.(TypeToken.java:9) at b.a.e.a.(ListExtension.kt:1) at o.u.u.f(ViewGroupUtilsApi14.java:11)的堆栈跟踪错误:可抛出的java.lang.AssertionError:非法类型变量引用

上面是堆栈跟踪。ListExtension包含问题中提到的代码，需要帮助来解决此问题。

Answer 1

在你的pro-guard文件中试试这个

-keepattributes SourceFile,LineNumberTable

-keepattributes *Annotation*
# Do not obfuscate classes with Injected Constructors
-keepclasseswithmembernames class * { @javax.inject.Inject <init>(...); }
# Do not obfuscate classes with Injected Fields
-keepclasseswithmembernames class * { @javax.inject.Inject <fields>; }
# Do not obfuscate classes with Injected Methods
-keepclasseswithmembernames class * { @javax.inject.Inject <methods>; }

-keep class **__Factory { *; }
-keep class **__MemberInjector { *; }

# Specifies that string constants that correspond to class names should be obfuscated as well.
-adaptclassstrings com.example.your_package_name.**

Answer 2

##---------------Begin: proguard configuration for Gson  ----------

-keepattributes Signature

# Gson specific classes
-keep class sun.misc.Unsafe { *; }
-keep class com.google.gson.stream.** { *; }

# Application classes that will be serialized/deserialized over Gson
# -keep class mypersonalclass.data.model.** { *; }

添加保留模型的规则，我认为您的扩展函数在模型类中