Proguard
最近開始做新項目萝快，需要做代碼混淆乓梨。就直接從之前的項目中將proguard-rules.pro文件拷貝過來烘挫，然后在gradle中配置：
buildTypes {
release {
minifyEnabled true
zipAlignEnabled true
proguardFiles getDefaultProguardFile('proguard-android.txt'), "$rootDir/config/proguard-rules.pro"
}
}
存在的不足
像我這種情況挣棕，新啟動的一個項目宁玫，需要Proguard。但是如果寫在一個文件中薇正，而且沒有任何注釋，如果還沒有寫在一塊囚衔，拷貝過來還是需要一個個去檢查是否需要挖腰，去掉了某個庫的混淆，增加了某些庫的混淆练湿。
比如我之前用的是Retrofit1猴仑，在proguard-rules.pro配置：
# Retrofit 1.X
-keep class com.squareup.okhttp.** { *; }
-keep class retrofit.** { *; }
-keep interface com.squareup.okhttp.** { *; }
-dontwarn com.squareup.okhttp.**
-dontwarn okio.**
-dontwarn retrofit.**
-dontwarn rx.**
-keepclasseswithmembers class * {
@retrofit.http.* <methods>;
}
# If in your rest service interface you use methods with Callback argument.
-keepattributes Exceptions
# If your rest service methods throw custom exceptions, because you've defined an ErrorHandler.
-keepattributes Signature
# Also you must note that if you are using GSON for conversion from JSON to POJO representation, you must ignore those POJO classes from being obfuscated.
# Here include the POJO's that have you have created for mapping JSON response to POJO for example.
現(xiàn)在我升級到retrofit2，由于retrofit2庫做了修改肥哎，Proguard規(guī)則也需要更新為：
# Retrofit 2.X
## https://square.github.io/retrofit/ ##
-dontwarn retrofit2.**
-keep class retrofit2.** { *; }
-keepattributes Signature
-keepattributes Exceptions
-keepclasseswithmembers class * {
@retrofit2.http.* <methods>;
}
如果存在多個這樣的庫辽俗，那是不是很增加工作量。下面我們換一種姿勢來看篡诽。
換一種姿勢
參考庫android-proguard-snippets 在項目的根目錄建立config/proguard-pro/目錄崖飘，將所有第三方的庫和一些通用的配置全部配置在里面：
-
基本不用動的規(guī)則
proguard-normal.pro## Proguard normal ## # ============================== 基本不用動區(qū)域 ============================== # ------------------------------- 基本指令區(qū) ------------------------------- # 代碼混淆的壓縮比例(0-7) , 默認(rèn)為5 , 一般不需要改 -optimizationpasses 5 # 混淆后類名都小寫 (windows最后加上 , 因為windows大小寫敏感) -dontusemixedcaseclassnames # 指定不去忽略非公共的庫的類(即混淆第三方, 第三方庫可能自己混淆了 , 可在后面配置某些第三方庫不混淆) # 默認(rèn)跳過，有些情況下編寫的代碼與類庫中的類在同一個包下杈女，并且持有包中內(nèi)容的引用朱浴，此時就需要加入此條聲明 -dontskipnonpubliclibraryclasses # 指定不去忽略非公共的庫的類的成員 -dontskipnonpubliclibraryclassmembers # 不做預(yù)檢驗，preverify是proguard的四個步驟之一 # Android不需要preverify达椰，去掉這一步可以加快混淆速度 -dontpreverify # 有了verbose這句話翰蠢，混淆后就會生成映射文件 # 包含有類名->混淆后類名的映射關(guān)系 # 然后使用printmapping指定映射文件的名稱 -verbose -printmapping proguardMapping.txt # 指定混淆時采用的算法，后面的參數(shù)是一個過濾器 # 這個過濾器是谷歌推薦的算法啰劲，一般不改變 -optimizations !code/simplification/cast,!field/*,!class/merging/* # 保護(hù)代碼中的Annotation不被混淆 # 這在JSON實體映射時非常重要梁沧，比如fastJson -keepattributes *Annotation*,InnerClasses -keep public class com.google.vending.licensing.ILicensingService -keep public class com.android.vending.licensing.ILicensingService # 避免混淆泛型 # 這在JSON實體映射時非常重要，比如fastJson -keepattributes Signature #拋出異常時保留源文件和代碼行號 -keepattributes SourceFile,LineNumberTable # ------------------------------- 基本指令區(qū) ------------------------------- # ------------------------------- 默認(rèn)保留區(qū) ------------------------------- # 保留四大組件 -keep public class * extends android.app.Activity # 保留就保證layout中定義的onClick方法不影響 # We want to keep methods in Activity that could be used in the XML attribute onClick -keepclassmembers class * extends android.app.Activity{ public void *(android.view.View); } -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.Application -keep public class * extends android.app.backup.BackupAgentHelper -keep public class * extends android.preference.Preference # For native methods, see http://proguard.sourceforge.net/manual/examples.html#native # 保留類名和native成員方法 -keepclasseswithmembernames class * { native <methods>; } # 枚舉類不能被混淆 # # For enumeration classes, see http://proguard.sourceforge.net/manual/examples.html#enumerations -keepclassmembers enum * { public static **[] values(); public static ** valueOf(java.lang.String); } # 保留自定義控件(繼承自View)的setter蝇裤、getter和構(gòu)造方法 # keep setters in Views so that animations can still work. # see http://proguard.sourceforge.net/manual/examples.html#beans -keep public class * extends android.view.View{ public <init>(android.content.Context); public <init>(android.content.Context, android.util.AttributeSet); public <init>(android.content.Context, android.util.AttributeSet, int); *** get*(); void set*(***); } # 保留Parcelable序列化的類不能被混淆 #-keep class * implements android.os.Parcelable { # public static final android.os.Parcelable$Creator *; #} # 官方 -keepclassmembers class * implements android.os.Parcelable { public static final android.os.Parcelable$Creator CREATOR; } # 所有實現(xiàn)了 Serializable 接口的類及其成員都不進(jìn)行混淆 -keepnames class * implements java.io.Serializable -keepclassmembers class * implements java.io.Serializable { static final long serialVersionUID; private static final java.io.ObjectStreamField[] serialPersistentFields; !static !transient <fields>; private void writeObject(java.io.ObjectOutputStream); private void readObject(java.io.ObjectInputStream); java.lang.Object writeReplace(); java.lang.Object readResolve(); } # 對R文件下的所有類及其方法 , 都不能被混淆 #-keep class **.R$* { # *; #} # 官方 -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>(...); } # ------------------------------- 默認(rèn)保留區(qū) end------------------------------- #------------------------------- 以上內(nèi)容基本是SDK目錄下的proguard-android-optimize.txt內(nèi)容 ------------------------------- # # ------------------------------- webview相關(guān) ------------------------------- -dontwarn android.webkit** # WebView(可選) -keepclassmembers class * extends android.webkit.WebView { public *; } # WebView的復(fù)雜操作 -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.WebChromeClient { public void *(android.webkit.WebView,java.lang.String); } # 與JS交互 -keepattributes SetJavaScriptEnabled -keepattributes JavascriptInterface # 保留與JS交互接口 , API17+ -keepclassmembers class * { @android.webkit.JavascriptInterface <methods>; } # ------------------------------- webview相關(guān) end ------------------------------- -dontwarn org.apache.** # ============================== 基本不動區(qū)域 end ==============================?
-
okhttp3
proguard-square-okhttp3.pro# OkHttp3 specific rules # -keepattributes Signature -keepattributes *Annotation* -keep class okhttp3.** { *; } -keep interface okhttp3.** { *; } -dontwarn okhttp3.** -
eventbus3
proguard-eventbus-3.pro
## EventBus3 specific rules ## # http://greenrobot.org/eventbus/documentation/proguard/ -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); }?
最后在proguard-rules.pro將他們?nèi)繉?dǎo)入進(jìn)來：
-basedirectory proguard-pro
-include proguard-normal.pro
-include proguard-google.pro
-include proguard-google-gson2.pro
-include proguard-google-protobuf.pro
-include proguard-google-volley.pro
-include proguard-eventbus-3.pro
-include proguard-facebook-stetho.pro
-include proguard-glide.pro
-include proguard-leakcanary.pro
-include proguard-jpush.pro
-include proguard-qiniu.pro
-include proguard-tencent-bugly.pro
-include proguard-umeng.pro
-include proguard-baidu-map.pro
如果后面替換了某個庫廷支，或者增加了某個庫频鉴，直接在這個文件注釋或者增加一條-include就行了。
在build.gradle中配置：
buildTypes {
release {
minifyEnabled true
zipAlignEnabled true
proguardFiles getDefaultProguardFile('proguard-android.txt'), "$rootDir/config/proguard-rules.pro"
}
}
當(dāng)然也可以采用這種方式酥泞，但這種會導(dǎo)致build.gradle文件龐大：
android {
buildTypes {
release {
minifyEnabled true
// Library specific proguard files
proguardFile 'proguard-google-play-services.pro'
proguardFile 'proguard-gson.pro'
...
// Default proguard files & project app specific rules,
// see examples folder for more information
proguardFile 'proguard-project-app.pro'
proguardFile getDefaultProguardFile('proguard-android.txt')
// As of Gradle Android plugin 1.1.0, the test APK has a separate config
testProguardFile 'proguard-project-test.pro'
}
}
}
