APK打包優化-圖片、資源、so、混淆

1. 圖片優化

（1） 圖標使用矢量圖（svg轉成android支持的vector）

vector 5.0+兼容配置
android {  
   defaultConfig {  
     vectorDrawables.useSupportLibrary = true  
    }  
 }  

//app:srcCompat替換android:src
app:srcCompat="@drawable/back"
//着色器(改變矢量圖的顏色)
android:tint="@color/transparent"

（2）圖片轉成webp格式

2. 只保留指定的國際化資源

//只保留默認和指定資源
android {  
   defaultConfig {  
     resConfigs('zh-rCN') 
    }  
 }  
  

結果在resources.arsc文件中查看（資源映射表）

3. so庫的優化

//so庫打包配置，只打包指定架構的so庫
android {  
   defaultConfig {  
     ndk {
            abiFilters "armeabi-v7a"
        }
    }  
 }  
  

4. 混淆

（1）源代碼混淆和資源文件壓縮替換

minifyEnabled true //混淆
shrinkResources true // 移除無用的resource文件 
zipAlignEnabled true // Zipalign優化 
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'

（2）混淆配置文件 proguard-rules.pro

# Add project specific ProGuard rules here.
# You can control the set of applied configuration files using the
# proguardFiles setting in build.gradle.
#
# For more details, see
#   http://developer.android.com/guide/developing/tools/proguard.html

# If your project uses WebView with JS, uncomment the following
# and specify the fully qualified class name to the JavaScript interface
# class:
#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
#   public *;
#}

# 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

# 代碼混淆壓縮比，在0~7之間，默認爲5，一般不做修改
-optimizationpasses 5

# 混合時不使用大小寫混合，混合後的類名爲小寫
-dontusemixedcaseclassnames

# 指定不去忽略非公共庫的類
-dontskipnonpubliclibraryclasses

# 這句話能夠使我們的項目混淆後產生映射文件
# 包含有類名->混淆後類名的映射關係
-verbose

# 指定不去忽略非公共庫的類成員
-dontskipnonpubliclibraryclassmembers

# 不做預校驗，preverify是proguard的四個步驟之一，Android不需要preverify，去掉這一步能夠加快混淆速度。
-dontpreverify

# 保留Annotation不混淆
-keepattributes *Annotation*,InnerClasses

# 避免混淆泛型,異常
-keepattributes Signature,Exceptions

# 拋出異常時保留代碼行號
-keepattributes SourceFile,LineNumberTable

# 指定混淆是採用的算法，後面的參數是一個過濾器
# 這個過濾器是谷歌推薦的算法，一般不做更改
-optimizations !code/simplification/cast,!field/*,!class/merging/*

# apk 包內所有 class 的內部結構
#-dump class_files.txt
# 未混淆的類和成員
-printseeds seeds.txt
# 列出從 apk 中刪除的代碼
-printusage unused.txt
# 混淆前後的映射
-printmapping mapping.txt

#############################################
#
# Android開發中一些需要保留的公共部分
#
#############################################

# 保留我們使用的四大組件，自定義的Application等等這些類不被混淆
# 因爲這些子類都有可能被外部調用
-keep public class * extends android.app.Activity
-keep public class * extends android.app.Appliction
-keep public class * extends android.app.Service
-keep public class * extends android.content.BroadcastReceiver
-keep public class * extends android.content.ContentProvider
-keep public class * extends android.app.backup.BackupAgentHelper
-keep public class * extends android.preference.Preference
-keep public class * extends android.view.View
-keep public class com.android.vending.licensing.ILicensingService

-ignorewarnings

# 保留support下的所有類及其內部類
-keep class android.support.** { *; }
-keep interface android.support.** { *; }
-dontwarn android.support.**

#AndroidX
-keep class com.google.android.material.** {*;}
-keep class androidx.** {*;}
-keep public class * extends androidx.**
-keep interface androidx.** {*;}
-dontwarn com.google.android.material.**
-dontnote com.google.android.material.**
-dontwarn androidx.**

# 保留繼承的
-keep public class * extends android.support.v4.**
-keep public class * extends android.support.v7.**
-keep public class * extends android.support.annotation.**

# 保留R下面的資源
-keep class **.R$* {*;}

# 保留本地native方法不被混淆
-keepclasseswithmembernames class * {
    native <methods>;
}

# 保留在Activity中的方法參數是view的方法，
# 這樣以來我們在layout中寫的onClick就不會被影響
-keepclassmembers class * extends android.app.Activity{
    public void *(android.view.View);
}

# 保留枚舉類不被混淆
-keepclassmembers enum * {
    public static **[] values();
    public static ** valueOf(java.lang.String);
}

# 保留我們自定義控件（繼承自View）不被混淆
-keep public class * extends android.view.View{
    *** get*();
    void set*(***);
    public <init>(android.content.Context);
    public <init>(android.content.Context, android.util.AttributeSet);
    public <init>(android.content.Context, android.util.AttributeSet, int);
}

# 保留Parcelable序列化類不被混淆
-keep class * implements android.os.Parcelable {
    public static final android.os.Parcelable$Creator *;
}

# 保留Serializable序列化的類不被混淆
-keepnames class * implements java.io.Serializable
-keepclassmembers class * implements java.io.Serializable {
    static final long serialVersionUID;
    private static final java.io.ObjectStreamField[] serialPersistentFields;
    !static !transient <fields>;
    !private <fields>;
    !private <methods>;
    private void writeObject(java.io.ObjectOutputStream);
    private void readObject(java.io.ObjectInputStream);
    java.lang.Object writeReplace();
    java.lang.Object readResolve();
}

# 對於帶有回調函數的onXXEvent、**On*Listener的，不能被混淆
-keepclassmembers class * {
    void *(**On*Event);
    void *(**On*Listener);
}

# webView處理
-keepclassmembers class fqcn.of.javascript.interface.for.webview {
    public *;
}
-keepclassmembers class * extends android.webkit.webViewClient {
    public void *(android.webkit.WebView, java.lang.String, android.graphics.Bitmap);
    public boolean *(android.webkit.WebView, java.lang.String);
}
-keepclassmembers class * extends android.webkit.webViewClient {
    public void *(android.webkit.webView, jav.lang.String);
}

#-----------處理js交互---------------
# 保持WebView中JavaScript調用的方法
# 下面新增的-keepattributes *Annotation*保留註解，還應該是包含了這句功能
-keepclasseswithmembers class * {
    @android.webkit.JavascriptInterface <methods>;
}


# 移除Log類打印各個等級日誌的代碼，打正式包的時候可以做爲禁log使用，這裏可以作爲禁止log打印的功能使用
# 記得proguard-android.txt中一定不要加-dontoptimize才起作用
# 另外的一種實現方案是通過BuildConfig.DEBUG的變量來控制
#-assumenosideeffects class android.util.Log {
#    public static int v(...);
#    public static int i(...);
#    public static int w(...);
#    public static int d(...);
#    public static int e(...);
#}

#############################################
#
# 項目中特殊處理部分
#
#############################################

# BottomNavigationMenuView
-keepclassmembers class android.support.design.internal.BottomNavigationMenuView {
    boolean mShiftingMode;
}
# SearchView
-keepclassmembers class android.support.v7.widget.SearchView {
    ImageView mGoButton;
}

#-----------處理jar包---------------



#-----------處理反射類---------------



#-----------處理實體類---------------
-keep class **.*model*.** {*;}
-keep class **.*bean*.**{*;}
-keep class **.*Bean {*;}
-keep class **.*data*.**{*;}
-keep class **.*Data {*;}
-keep class *.**entity*.** {*;}
-keep class **.*Entity {*;}
-keep class *.**body*.** {*;}
-keep class **.*Body {*;}


#-----------處理第三方依賴庫---------

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

################ gson ###############
-keepattributes Signature
-keepattributes *Annotation*
-keep class sun.misc.Unsafe { *; }
-keep class com.google.gson.stream.** { *; }
# Application classes that will be serialized/deserialized over Gson
-keep class com.sunloto.shandong.bean.** { *; }

################ glide ###############
-keep public class * implements com.bumptech.glide.module.AppGlideModule
-keep public class * implements com.bumptech.glide.module.LibraryGlideModule
-keep class com.bumptech.glide.** { *; }
-keep public enum com.bumptech.glide.load.resource.bitmap.ImageHeaderParser$** {
    **[] $VALUES;
    public *;
}

################ fresco ###############
-keep class com.facebook.**{*;}

################ okhttp ###############
-keepattributes Signature
-keepattributes *Annotation*
-keep class com.squareup.okhttp.** { *; }
-keep interface com.squareup.okhttp.** { *; }
-keep class okhttp3.** { *; }
-keep interface okhttp3.** { *; }
-dontwarn com.squareup.okhttp.**
#okio
-dontwarn okio.**
-keep class okio.**{*;}

################ LitePal ###############
-keep class org.litepal.** {*;}
-keep class * extends org.litepal.crud.DataSupport {*;}
-keep class * extends org.litepal.crud.LitePalSupport {*;}

#greendao
-keepclassmembers class * extends org.greenrobot.greendao.AbstractDao {
public static java.lang.String TABLENAME;
}
-keep class **$Properties {*;}

# If you do not use SQLCipher:
-dontwarn net.sqlcipher.database.**
# If you do not use RxJava:
-dontwarn rx.**

################ Bugly ###############
-dontwarn com.tencent.bugly.**
-keep public class com.tencent.bugly.**{*;}
-keep class android.support.**{*;}

################ tinker ###############
-dontwarn com.tencent.tinker.**
-keep class com.tencent.tinker.** { *; }

################ autolayout ###############
-keep class com.zhy.autolayout.** { *; }
-keep interface com.zhy.autolayout.** { *; }

################ RxJava and RxAndroid ###############
-dontwarn org.mockito.**
-dontwarn org.junit.**
-dontwarn org.robolectric.**

-keep class io.reactivex.** { *; }
-keep interface io.reactivex.** { *; }

-keepattributes Signature
-keepattributes *Annotation*
-keep class com.squareup.okhttp.** { *; }
-dontwarn okio.**
-keep interface com.squareup.okhttp.** { *; }
-dontwarn com.squareup.okhttp.**

-dontwarn io.reactivex.**
-dontwarn retrofit.**
-keep class retrofit.** { *; }
-keepclasseswithmembers class * {
    @retrofit.http.* <methods>;
}

-keep class sun.misc.Unsafe { *; }

-dontwarn java.lang.invoke.*

-keep class io.reactivex.schedulers.Schedulers {
    public static <methods>;
}
-keep class io.reactivex.schedulers.ImmediateScheduler {
    public <methods>;
}
-keep class io.reactivex.schedulers.TestScheduler {
    public <methods>;
}
-keep class io.reactivex.schedulers.Schedulers {
    public static ** test();
}
-keepclassmembers class io.reactivex.internal.util.unsafe.*ArrayQueue*Field* {
    long producerIndex;
    long consumerIndex;
}
-keepclassmembers class io.reactivex.internal.util.unsafe.BaseLinkedQueueProducerNodeRef {
    long producerNode;
    long consumerNode;
}

-keepclassmembers class io.reactivex.internal.util.unsafe.BaseLinkedQueueProducerNodeRef {
    io.reactivex.internal.util.atomic.LinkedQueueNode producerNode;
}
-keepclassmembers class io.reactivex.internal.util.unsafe.BaseLinkedQueueConsumerNodeRef {
    io.reactivex.internal.util.atomic.LinkedQueueNode consumerNode;
}

-dontwarn io.reactivex.internal.util.unsafe.**

################ espresso ###############
-keep class android.support.test.espresso.** { *; }
-keep interface android.support.test.espresso.** { *; }

################ annotation ###############
-keep class android.support.annotation.** { *; }
-keep interface android.support.annotation.** { *; }

################ LeakCanary #################
-dontwarn com.squareup.haha.guava.**
-dontwarn com.squareup.haha.perflib.**
-dontwarn com.squareup.haha.trove.**
-dontwarn com.squareup.leakcanary.**
-keep class com.squareup.haha.** { *; }
-keep class com.squareup.leakcanary.** { *; }

################ AndroidAutoSize #################
-keep class me.jessyan.autosize.** { *; }
-keep interface me.jessyan.autosize.** { *; }

################ Dagger2 ###############
-dontwarn com.google.errorprone.annotations.*

################ ButterKnife ###############
-keep public class * implements butterknife.Unbinder {
    public <init>(**, android.view.View);
}
-keep class butterknife.*
-keepclasseswithmembernames class * {
    @butterknife.* <methods>;
}
-keepclasseswithmembernames class * {
    @butterknife.* <fields>;
}

################ BRVAH ###############
-keep class com.chad.library.adapter.** { *; }
-keep public class * extends com.chad.library.adapter.base.BaseQuickAdapter
-keep public class * extends com.chad.library.adapter.base.BaseViewHolder
-keepclassmembers public class * extends com.chad.library.adapter.base.BaseViewHolder {
    <init>(android.view.View);
}

#eventbus
-keepattributes *Annotation*

-keepclassmembers class ** {
    @de.greenrobot.event.Subscribe <methods>;
}
-keep enum org.greenrobot.eventbus.ThreadMode { *; }

-keepclassmembers class ** {
    @org.greenrobot.eventbus.Subscribe <methods>;
}
-keep enum de.greenrobot.event.ThreadMode { *; }

################ AndroidEventBus ###############
-keep class org.simple.** { *; }
-keep interface org.simple.** { *; }
-keepclassmembers class * {
    @org.simple.eventbus.Subscriber <methods>;
}

################ ImmersionBar ###############
-keep class com.gyf.barlibrary.* {*;}
-dontwarn com.gyf.barlibrary.**
-keep class com.gyf.immersionbar.* {*;}
-dontwarn com.gyf.immersionbar.**

（3）微信 資源混淆