启用Proguard后，Retrofit2无法工作。

Question

我有一个应用程序，它使用retrofit从一个API中获取标志。

当我不混淆和收缩我的代码时，一切都很好。但是当我启用它时，API调用停止工作。我没有收到任何崩溃或错误信息，只是没有从API中得到任何值。

gradle

buildTypes {
    debug{
        // Enables code shrinking, obfuscation, and optimization for only
        // your project's release build type.
        minifyEnabled true

        // Enables resource shrinking, which is performed by the
        // Android Gradle plugin.
        shrinkResources true

        proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        signingConfig signingConfigs.debug
    }
    release {
        proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        signingConfig signingConfigs.release
    }
}

我在调试中使用它只是为了测试目的。如果我在发行版中使用它，它有同样的输出。

我检查了改造页面，他们建议使用以下文件。

proguard-rules.pro

# Uncomment this to preserve the line number information for
# debugging stack traces.
-keepattributes SourceFile,LineNumberTable

# If you keep the line number information, uncomment this to
# hide the original source file name.
-renamesourcefileattribute SourceFile
-printusage usage.txt

-keep class com.th3pl4gu3.locky_offline.core.main.** {*;}
-keep class com.th3pl4gu3.locky_offline.repository.network.** {*;}
-keep class com.th3pl4gu3.locky_offline.repository.database.** {*;}

# Retrofit does reflection on generic parameters. InnerClasses is required to use Signature and
# EnclosingMethod is required to use InnerClasses.
-keepattributes Signature, InnerClasses, EnclosingMethod

# Retrofit does reflection on method and parameter annotations.
-keepattributes RuntimeVisibleAnnotations, RuntimeVisibleParameterAnnotations

# Retain service method parameters when optimizing.
-keepclassmembers,allowshrinking,allowobfuscation interface * {
    @retrofit2.http.* <methods>;
}

# Ignore annotation used for build tooling.
-dontwarn org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement

# Ignore JSR 305 annotations for embedding nullability information.
-dontwarn javax.annotation.**

# Guarded by a NoClassDefFoundError try/catch and only used when on the classpath.
-dontwarn kotlin.Unit

# Top-level functions that can only be used by Kotlin.
-dontwarn retrofit2.KotlinExtensions
-dontwarn retrofit2.KotlinExtensions$*

# With R8 full mode, it sees no subtypes of Retrofit interfaces since they are created with a Proxy
# and replaces all potential values with null. Explicitly keeping the interfaces prevents this.
-if interface * { @retrofit2.http.* <methods>; }
-keep,allowobfuscation interface <1>

API调用还是不行。我在stackoverflow上试了很多帖子，但都没有用。谁能帮我提出一个解决方案或替代方案？

谢谢你的帮助

Answer 1

你有没有试过把@SerializedName放到Object字段？

public class YourJsonClass{
    @SerializedName("username") 
    String username;
}