android 代碼混淆
1 proguard.cfg，這就是混淆所需的proguard腳本啊。
其代碼如下：
[java]
view plain
-optimizationpasses 5
-dontusemixedcaseclassnames
-dontskipnonpubliclibraryclasses
-dontpreverify
-verbose
-optimizations !code/simplification/arithmetic,!field/*,!class/merging/*
-keep public class * extends android.app.Activity
-keep public class * extends android.app.Application
-keep public class * extends android.app.Service
-keep public class * extends android.content.BroadcastReceiver
-keep public class * extends android.content.ContentProvider
-keep public class com.android.vending.licensing.ILicensingService
-keepclasseswithmembernames class * {
native <methods>;
}
-keepclasseswithmembernames class * {
public <init>(android.content.Context, android.util.AttributeSet);
}
-keepclasseswithmembernames class * {
public <init>(android.content.Context, android.util.AttributeSet, int);
}
-keepclassmembers enum * {
public static **[] values();
public static ** valueOf(java.lang.String);
}
-keep class * implements android.os.Parcelable {
public static final android.os.Parcelable$Creator *;
}
從腳本中可以看到，混淆中保留瞭繼承自Activity、Service、Application、BroadcastReceiver、ContentProvider等基本組件。
並保留瞭所有的Native變量名及類名，所有類中部分以設定瞭固定參數格式的構造函數，枚舉等等。(詳細信息請參考<proguard_path>/examples中的例子及註釋。)
2 在工程的"default.properties"中添加這樣一句話“proguard.config=proguard.cfg”
打包簽名後的.apk就是混淆的，其實我們隻要做一步就可以瞭就是在"default.properties"中添加這樣一句話“proguard.config=proguard.cfg”就可以瞭。
出現錯誤：
[INFO] Warning: there were 294 unresolved references to classes or interfaces.
[INFO] You may need to specify additional library jars (using '-library
jars').
[INFO] Warning: there were 3 unresolved references to program class members.
You should consider explicitly keeping the mentioned class members
(using '-keep' or '-keepclassmembers').
[INFO] Your input classes appear to be inconsistent.
[INFO] You may need to recompile them and try again.
[INFO] Alternatively, you may have to specify the option
[INFO] '-dontskipnonpubliclibraryclassmembers'.
[INFO] java.io.IOException: Please correct the above warnings first.
[INFO] at proguard.Initializer.execute(Initializer.java:321)
[INFO] at proguard.ProGuard.initialize(ProGuard.java:211)
[INFO] at proguard.ProGuard.execute(ProGuard.java:86)
[INFO] at proguard.ProGuard.main(ProGuard.java:492)
解決方法如下：解決方法找到瞭，在proguard.cfg文件中加入-ignorewarnings就可以跳過這個錯誤瞭。