android - proguard-android-optimize.txt 中的 "@Keep support annotation"规则在使用 AndroidX 时是否仍然适用？

Question

通常将 proguard-android-optimize.txt 用作混淆文件。

proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-project.txt'

但是，当我浏览 proguard-android-optimize.txt

的内容时

...

-keepclassmembers class **.R$* {
    public static <fields>;
}

# The support library contains references to newer platform versions.
# Don't warn about those in case this app is linking against an older
# platform version.  We know about them, and they are safe.
-dontwarn android.support.**

# Understand the @Keep support annotation.
-keep class android.support.annotation.Keep

-keep @android.support.annotation.Keep class * {*;}

-keepclasseswithmembers class * {
    @android.support.annotation.Keep <methods>;
}

-keepclasseswithmembers class * {
    @android.support.annotation.Keep <fields>;
}

-keepclasseswithmembers class * {
    @android.support.annotation.Keep <init>(...);
}

我想知道，如果我们使用 AndroidX 而不是支持库，这样的规则是否仍然适用？我们是否应该在项目 proguard-project.txt 中明确添加以下规则？

# Understand the @Keep support annotation.
-keep class androidx.annotation.Keep

-keep @androidx.annotation.Keep class * {*;}

-keepclasseswithmembers class * {
    @androidx.annotation.Keep <methods>;
}

-keepclasseswithmembers class * {
    @androidx.annotation.Keep <fields>;
}

-keepclasseswithmembers class * {
    @androidx.annotation.Keep <init>(...);
}

Answer 1

我刚刚检查了它并使用 androidx.annotation.Keep 注释类保留了它们。无需额外配置。