主要修改2个文件 default.properties 和 proguard.cfg

首先先看看原始文件的内容

 default.properties

# This file is automatically generated by Android Tools.

# Do not modify this file -- YOUR CHANGES WILL BE ERASED! #  # This file must be checked in Version Control Systems. #  # To customize properties used by the Ant build system use, # "build.properties", and override values to adapt the script to your # project structure. # Project target. target=android-8 # Indicates whether an apk should be generated for each density. split.density=false

  proguard.cfg

-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 * extends android.app.backup.BackupAgentHelper-keep public class * extends android.preference.Preference-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 *;}

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如果说你项目没有引用第三方包，就只要在default.properties 加入 proguard.config=proguard.cfg

# This file is automatically generated by Android Tools.

# Do not modify this file -- YOUR CHANGES WILL BE ERASED! #  # This file must be checked in Version Control Systems. #  # To customize properties used by the Ant build system use, # "build.properties", and override values to adapt the script to your # project structure. # Project target. target=android-8proguard.config=proguard.cfg # Indicates whether an apk should be generated for each density. split.density=false

如果有第三方包，则需要修改 proguard.cfg 忽略第三方包的混淆

-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 * extends android.app.backup.BackupAgentHelper -keep public class * extends android.preference.Preference -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 *; }-ignorewarnings-libraryjars lib/GuoTengTermb.jar-libraryjars lib/ksoap2-android-assembly-2.4-jar-with-dependencies.jar-libraryjars lib/httpmime-4.1.3.jar-libraryjars lib/idreadsdk.jar-libraryjars libs/MapApi.jar -dontskipnonpubliclibraryclassmembers -dontskipnonpubliclibraryclasses-keep class org.kobjects.**{*;}-keep class guoTeng.IC2ReadCard.**{*;}-keep class com.fri.idcread.**{*;}-keep class org.apache.http.entity.**{*;}-keep class com.amap.mapapi.**{*;}-keep class com.autonavi.aps.api.**{*;}-keep class com.mapabc.minimap.map.vmap.**{*;} -keepclassmembers class * extends android.app.Activity {    public void *(android.view.View);  }  -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();  } -------------------------------------------------------------

这样导包apk时，就是代码混淆的的apk了