java - Retrofit2 proguard 发生 : java. lang.AbstractMethodError:抽象方法 "void retrofit2.Callback.onResponse(retrofit2.Call, retrofit2.Response)"

Question

我正在开发一个自定义模块项目，里面有一个管理器类(下面调用“ManagerClass ”)作为这个模块的主要入口。在这个类中，我使用retrofit2 将http API 与入队模式连接起来。

Now, what makes me crazy is that, in Debug buildType, the whole module is running faultlessly！But if I want to make JAR, it means in release mode, I want the module to be mixed and the exception occured!

这是我的 API 方法:

public void apiGetPublicIpInfo2(Callback<TestIp> callback) {
    Call<TestIp> call = apiService.getPublicIpInfo("http://ipinfo.io/json");
    call.enqueue(callback);
}

这是我在 ManagerClass 中的用法:

mApiManager.apiGetPublicIpInfo2(new Callback<TestIp>() {
        @Override
        public void onResponse(Call<TestIp> call, Response<TestIp> response) {
            ...
        }

        @Override
        public void onFailure(Call<TestIp> call, Throwable t) {
            ...
        }
    });

但是如果我创建 JAR，它看起来像这样:

enter image description here

The abstract method onResponse and onFailure of retrofit2.Callback are mixed!

结果是:

java.lang.AbstractMethodError: abstract method "void retrofit2.Callback.onResponse(retrofit2.Call, retrofit2.Response)"
    at retrofit2.ExecutorCallAdapterFactory$ExecutorCallbackCall$1$1.run(ExecutorCallAdapterFactory.java:70)
    at android.os.Handler.handleCallback(Handler.java:809)
    at android.os.Handler.dispatchMessage(Handler.java:102)
    at android.os.Looper.loop(Looper.java:166)
    at android.app.ActivityThread.main(ActivityThread.java:7377)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:469)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:963)

proguard-rules.pro 文件是普通类型，就像:

-keep class com.----.ManagerClass {
    public <fields>;
    public <methods>;
}

即使我将其更改为

-keep class com.----.ManagerClass {
    *;
}

覆盖方法 响应 和 失败 匿名内部类“ new Callback<>(){} ”仍然混合...

我的模块 build.gradle 是:

apply plugin: 'com.android.library'
android {
    compileSdkVersion 26

    defaultConfig {
        minSdkVersion 10
        targetSdkVersion 26
        versionCode 1
        versionName "0.0.1"

        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        debug {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            jniDebuggable true
        }
        release {
            minifyEnabled true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            jniDebuggable false
        }
    }
    lintOptions {
        abortOnError false
    }
}
dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation 'com.android.support:appcompat-v7:26.1.0'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    implementation 'com.google.code.gson:gson:2.8.5'
    implementation 'com.squareup.retrofit2:retrofit:2.4.0'
    implementation 'com.squareup.retrofit2:converter-gson:2.4.0'
}

在我尝试了某种方法(例如编辑 proguard 文件)后，我不知道如何修复它。

Answer 1

尝试设置此选项:

-dontwarn retrofit2.**
-keep class retrofit2.** { *; }
-keepattributes Signature
-keepattributes Exceptions

-keepclasseswithmembers class * {
    @retrofit2.http.* <methods>;
}

更多详细设置见: https://github.com/square/retrofit/blob/master/retrofit/src/main/resources/META-INF/proguard/retrofit2.pro