即使使用 -keep class 仍然出现错误 Unresolved reference

Question

在项目中它有一个 class in OptionalDependencies.kt

package com.xyz.demo

import android.content.Context
import com.facebook.stetho.Stetho
import com.facebook.stetho.okhttp3.StethoInterceptor
import okhttp3.Interceptor

object OptionalDependencies {

    fun initStetho(context: Context) {
        Stetho.initializeWithDefaults(context)
    }

    fun getNetworkInterceptor() : Interceptor?  = StethoInterceptor()

}

并在 StartActivity.kt

package com.xyz.demo.ui

import com.xyz.demo.OptionalDependencies
……

class StartActivity : AppCompatActivity() {

    private fun initStetho(@ApplicationContext appContext: Context) {

        val interceptor : Interceptor? = 
                OptionalDependencies.getNetworkInterceptor()//<=== any where will get error referring the 
        ……
    }

    ……
}

在build.gradle

buildTypes {
    debug {
        minifyEnabled true
        shrinkResources true
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'

    }
}

在proguard-rules.pro

-keep class com.xyz.demo.** {*;}

也试过-keep class com.xyz.demo.OptionalDependencies {*;}

得到错误： e:/Users/sample/src/main/java/com/xyz/demo/ui/StartActivity.kt: (527, 42): Unresolved reference: OptionalDependencies

如果关闭 proguard 它工作正常。

Answer 1

我想在对 proguard-rules.pro 进行更改后必须做一个 "sync"，然后重新构建。

即使使用 -keep class 仍然出现错误 Unresolved reference

still got error Unresolved reference even with the -keep class

kotlin

android-proguard