android studio 3.1.2 中的 Proguard

Question

我有一个 apk，尺寸 31MB，然后我从 proguard 开始使用，现在是 30MB。

问题： 当我在 google 上传 apk 播放 apk 的大小增加到 57MB

我能做什么？

这是我的 gradle :

plugins {
    id 'com.onesignal.androidsdk.onesignal-gradle-plugin' version '0.7.0'
}
apply plugin: 'com.onesignal.androidsdk.onesignal-gradle-plugin'

repositories {
    maven { url 'https://maven.google.com' }
}
apply plugin: 'com.android.application'

repositories {
    jcenter()
}

android {
    compileSdkVersion 27
    buildToolsVersion '27.0.3'
    defaultConfig {
        applicationId "ss.sss.sss"
        manifestPlaceholders = [onesignal_app_id               : "41b72f81-0a8b-4ebd-86be-539e2e65113d",
                                // Project number pulled from dashboard, local value is ignored.
                                onesignal_google_project_number: "160823840785"]
        minSdkVersion 16
        targetSdkVersion 27
        versionCode 3
        versionName "1"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        vectorDrawables.useSupportLibrary = true
        multiDexEnabled true
    }
    dataBinding {
        enabled = true
    }
    buildTypes {
        release {
            lintOptions {
                disable 'MissingTranslation'
                checkReleaseBuilds false
                // Or, if you prefer, you can continue to check for errors in release builds,
                // but continue the build even when errors are found:
                abortOnError false
            }
            minifyEnabled true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
        debug {
            applicationIdSuffix '.debug'
        }
    }

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
    implementation 'com.android.support:exifinterface:27.1.1'
    implementation 'com.android.support:appcompat-v7:27.1.1'
    implementation 'com.android.support:recyclerview-v7:27.1.1'
    implementation 'com.android.support:cardview-v7:27.1.1'
    implementation 'com.android.support:design:27.1.1'
    implementation 'com.android.support:support-vector-drawable:27.1.1'
    implementation 'com.github.bumptech.glide:glide:3.8.0'
    implementation 'com.google.code.gson:gson:2.8.2'
    implementation 'com.squareup.okhttp3:okhttp:3.10.0'
    implementation 'com.squareup.retrofit2:retrofit:2.4.0'
    implementation 'com.squareup.retrofit2:converter-gson:2.4.0'
    implementation 'com.squareup.okhttp3:logging-interceptor:3.10.0'
    implementation 'com.squareup.retrofit2:converter-scalars:2.3.0'
    implementation 'com.squareup.picasso:picasso:2.5.2'
    //implementation 'com.nineoldandroids:library:2.4.0'
    implementation 'com.android.volley:volley:1.0.0'
    implementation 'io.reactivex.rxjava2:rxjava:2.1.3'
    implementation 'io.reactivex.rxjava2:rxandroid:2.0.1'
    implementation 'com.jakewharton.retrofit:retrofit2-rxjava2-adapter:1.0.0'
    //implementation 'com.netflix.rxjava:rxjava-android:0.16.1'
    implementation 'com.netflix.rxjava:rxjava-android:0.20.3'
    implementation 'com.joanzapata.iconify:android-iconify-fontawesome:2.2.2'
    implementation 'com.joanzapata.iconify:android-iconify-material:2.2.2'
    implementation 'com.joanzapata.iconify:android-iconify-material-community:2.2.2'
    implementation 'com.jakewharton:butterknife:8.8.1'
    implementation 'com.onesignal:OneSignal:[3.6.5, 3.99.99]'
    implementation 'com.google.firebase:firebase-core:11.8.0'
    implementation 'com.google.firebase:firebase-crash:11.8.0'
    testImplementation 'junit:junit:4.12'
    annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
    implementation 'com.github.barteksc:android-pdf-viewer:2.8.1'
    implementation 'org.greenrobot:eventbus:3.0.0'
    implementation 'com.android.support:support-compat:27.1.1'
    implementation 'com.readystatesoftware.sqliteasset:sqliteassethelper:+'
    implementation 'com.android.support:multidex:1.0.3'
}

apply plugin: 'com.google.gms.google-services'

这是我的 proguard-rules.pro :

#For eventBus
-keepattributes *Annotation*
-keepclassmembers class * {
    @org.greenrobot.eventbus.Subscribe <methods>;
}
-keep enum org.greenrobot.eventbus.ThreadMode { *; }

# Only required if you use AsyncExecutor
-keepclassmembers class * extends org.greenrobot.eventbus.util.ThrowableFailureEvent {
    <init>(java.lang.Throwable);
}
#For sqliteassethelper
-keepclassmembers class fqcn.of.javascript.interface.for.webview {
   public *;
}
#For proguard-support-v7-appcompat
-keep public class android.support.v7.widget.** { *; }
-keep public class android.support.v7.internal.widget.** { *; }
-keep public class android.support.v7.internal.view.menu.** { *; }

-keep public class * extends android.support.v4.view.ActionProvider {
    public <init>(android.content.Context);
}
#For com.github.barteksc:android-pdf-viewer:2.8.1
-keep class com.shockwave.**
#For butterknife
-keep public class * implements butterknife.Unbinder { public <init>(**, android.view.View); }

# Prevent obfuscation of types which use ButterKnife annotations since the simple name
# is used to reflectively look up the generated ViewBinding.
-keep class butterknife.*
-keepclasseswithmembernames class * { @butterknife.* <methods>; }
-keepclasseswithmembernames class * { @butterknife.* <fields>; }
#For OneSignal
-dontwarn com.onesignal.**

# These 2 methods are called with reflection.
-keep class com.google.android.gms.common.api.GoogleApiClient {
    void connect();
    void disconnect();
}


-keep class com.onesignal.ActivityLifecycleListenerCompat** {*;}


# Observer backcall methods are called with reflection
-keep class com.onesignal.OSSubscriptionState {
    void changed(com.onesignal.OSPermissionState);
}

-keep class com.onesignal.OSPermissionChangedInternalObserver {
    void changed(com.onesignal.OSPermissionState);
}

-keep class com.onesignal.OSSubscriptionChangedInternalObserver {
    void changed(com.onesignal.OSSubscriptionState);
}

-keep class ** implements com.onesignal.OSPermissionObserver {
    void onOSPermissionChanged(com.onesignal.OSPermissionStateChanges);
}

-keep class ** implements com.onesignal.OSSubscriptionObserver {
    void onOSSubscriptionChanged(com.onesignal.OSSubscriptionStateChanges);
}

-keep class com.onesignal.shortcutbadger.impl.AdwHomeBadger { <init>(...); }
-keep class com.onesignal.shortcutbadger.impl.ApexHomeBadger { <init>(...); }
-keep class com.onesignal.shortcutbadger.impl.AsusHomeLauncher { <init>(...); }
-keep class com.onesignal.shortcutbadger.impl.DefaultBadger { <init>(...); }
-keep class com.onesignal.shortcutbadger.impl.EverythingMeHomeBadger { <init>(...); }
-keep class com.onesignal.shortcutbadger.impl.HuaweiHomeBadger { <init>(...); }
-keep class com.onesignal.shortcutbadger.impl.LGHomeBadger { <init>(...); }
-keep class com.onesignal.shortcutbadger.impl.NewHtcHomeBadger { <init>(...); }
-keep class com.onesignal.shortcutbadger.impl.NovaHomeBadger { <init>(...); }
-keep class com.onesignal.shortcutbadger.impl.OPPOHomeBader { <init>(...); }
-keep class com.onesignal.shortcutbadger.impl.SamsungHomeBadger { <init>(...); }
-keep class com.onesignal.shortcutbadger.impl.SonyHomeBadger { <init>(...); }
-keep class com.onesignal.shortcutbadger.impl.VivoHomeBadger { <init>(...); }
-keep class com.onesignal.shortcutbadger.impl.XiaomiHomeBadger { <init>(...); }
-keep class com.onesignal.shortcutbadger.impl.ZukHomeBadger { <init>(...); }


-dontwarn com.amazon.**

# Proguard ends up removing this class even if it is used in AndroidManifest.xml so force keeping it.
-keep public class com.onesignal.ADMMessageHandler {*;}

-keep class com.onesignal.JobIntentService$* {*;}

-keep class com.onesignal.OneSignalUnityProxy {*;}

#For iconify
-keep class com.joanzapata.iconify.** { *; }
########--------Retrofit + RxJava--------#########
-dontwarn retrofit2.Platform$Java8
-dontwarn retrofit.**
-keep class retrofit.** { *; }
-dontwarn sun.misc.Unsafe
-dontwarn com.octo.android.robospice.retrofit.RetrofitJackson**
-dontwarn retrofit.appengine.UrlFetchClient
-keepattributes Signature
-keepattributes Exceptions
-keepclasseswithmembers class * {
    @retrofit.http.* <methods>;
}
-keep class com.google.gson.** { *; }
-keep class com.google.inject.** { *; }
-keep class org.apache.http.** { *; }
-keep class org.apache.james.mime4j.** { *; }
-keep class javax.inject.** { *; }
-keep class retrofit.** { *; }
-dontwarn org.apache.http.**
-dontwarn android.net.http.AndroidHttpClient
-dontwarn retrofit.**

-dontwarn sun.misc.**

-keepclassmembers class rx.internal.util.unsafe.*ArrayQueue*Field* {
   long producerIndex;
   long consumerIndex;
}

-keepclassmembers class rx.internal.util.unsafe.BaseLinkedQueueProducerNodeRef {
   long producerNode;
   long consumerNode;
}


# ALSO REMEMBER KEEPING YOUR MODEL CLASSES
-keep class com.your.package.model.** { *; }
#For volley
-keepclassmembers,allowshrinking,allowobfuscation class com.android.volley.NetworkDispatcher {
    void processRequest();
}
-keepclassmembers,allowshrinking,allowobfuscation class com.android.volley.CacheDispatcher {
    void processRequest();
}
#For piccaso and okHttp
-dontwarn com.squareup.okhttp.**
-dontwarn okhttp3.**
-dontwarn okio.**
-dontwarn javax.annotation.**
-dontwarn org.conscrypt.**
# A resource is loaded with a relative path so the package of this class must be preserved.
-keepnames class okhttp3.internal.publicsuffix.PublicSuffixDatabase

##---------------Begin: proguard configuration for Gson  ----------
# Gson uses generic type information stored in a class file when working with fields. Proguard
# removes such information by default, so configure it to keep all of it.
-keepattributes Signature

# For using GSON @Expose annotation
-keepattributes *Annotation*

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

# Prevent proguard from stripping interface information from TypeAdapterFactory,
# JsonSerializer, JsonDeserializer instances (so they can be used in @JsonAdapter)
-keep class * implements com.google.gson.TypeAdapterFactory
-keep class * implements com.google.gson.JsonSerializer
-keep class * implements com.google.gson.JsonDeserializer
#For glide
-keep public class * implements com.bumptech.glide.module.GlideModule
-keep public class * extends com.bumptech.glide.module.AppGlideModule
-keep public enum com.bumptech.glide.load.ImageHeaderParser$** {
  **[] $VALUES;
  public *;
}

# for DexGuard only
#-keepresourcexmlelements manifest/application/meta-data@value=GlideModule

#For support-vector-drawable
-keep class VectorPlay.** { *; }
-keep interface VectorPlay.**
-keep enum VectorPlay.**

#For android.support:design
-dontwarn android.support.design.**
-keep class android.support.design.** { *; }
-keep interface android.support.design.** { *; }
-keep public class android.support.design.R$* { *; }

#For cardview-v7
-keep class android.support.v7.widget.RoundRectDrawable { *; }

#For recyclerview-v7
-keep public class * extends android.support.v7.widget.RecyclerView$LayoutManager {
    public <init>(...);
}
# For constraint
-dontwarn android.support.constraint.**
-keep class android.support.constraint.** { *; }
-keep interface android.support.constraint.** { *; }
-keep public class android.support.constraint.R$* { *; }

Answer 1

在您的发布构建类型下，确保将 shrinkResources 设置为 true。 minifyEnabled 不够。

您包括 Glide 和 Picasso。使用其中一个，不能同时使用。

您包括 Volley 和 Retrofit。使用其中一个，而不是两个。

android-pdf-viewer 是出了名的大。请参阅 https://github.com/barteksc/AndroidPdfViewer#why-resulting-apk-is-so-big 中的解释和解决方法这就是你的apk这么大的最大原因。

在你的混淆器中：

# ALSO REMEMBER KEEPING YOUR MODEL CLASSES
-keep class com.your.package.model.** { *; }

以上不需要。

Google 的库通常带有自己的嵌入式混淆器规则；您的 cardview proguard 规则、android 支持设计库等可能不需要。

同时检查您的可绘制对象。尽可能使用 xml 可绘制对象，并为不需要透明度的背景使用 JPEG。也试试 webP 格式。

android studio 3.1.2 中的 Proguard

Proguard in android studio 3.1.2

android

google-play

android-studio

android-proguard