爲了防止自己的勞動成果被別人竊取，混淆代碼能有效防止被反編譯，下面來總結以下混淆代碼的步驟：
1. 大家也許都注意到新建一個工程會看到項目下邊有這樣proguard-project.txt一個文件，這個對混淆代碼很重要，如果你不小心刪掉了，沒關係，從其他地方拷貝一個過來
2. 最重要的就是在proguard-project.txt添加混淆的申明瞭：
a. 把所有你的jar包都申明進來，例如：
-libraryjars libs/apns_1.0.6.jar
-libraryjars libs/armeabi/libBaiduMapSDK_v2_3_1.so
-libraryjars libs/armeabi/liblocSDK4.so
-libraryjars libs/baidumapapi_v2_3_1.jar
-libraryjars libs/core.jar
-libraryjars libs/gesture-imageview.jar
-libraryjars libs/gson-2.0.jar
-libraryjars libs/infogracesound.jar
-libraryjars libs/locSDK_4.0.jar
-libraryjars libs/ormlite-Android-4.48.jar
-libraryjars libs/ormlite-core-4.48.jar
-libraryjars libs/universal-image-loader-1.9.0.jarb. 將你不需要混淆的部分申明進來，因爲有些類經過混淆會導致程序編譯不通過，如下：
-keep public class * extends android.app.Fragment
-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 * extends android.support.v4.**
-keep public class com.android.vending.licensing.ILicensingService--以上都是API裏邊的類，最好都要避免混淆
有些很特殊的，例如百度地圖，你需要添加以下申明：
-keep class com.baidu.** { *; }
-keep class vi.com.gdi.bgl.android.**{*;}根據我的經驗，一般model最好避免混淆（model無關緊要，不混淆也沒多大關係）如：
-keep class com.bank.pingan.model.** { *; }
下面在貼上關於Umeng分享統計的避免混淆的申明-dontwarn android.support.v4.**
-dontwarn org.apache.commons.NET.**
-dontwarn com.tencent.**-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$Creator *;
}-keepclasseswithmembers class * {
public <init>(android.content.Context);
}-dontshrink
-dontoptimize
-dontwarn com.google.android.maps.**
-dontwarn android.webkit.WebView
-dontwarn com.umeng.**
-dontwarn com.tencent.weibo.sdk.**
-dontwarn com.facebook.**-keep enum com.facebook.**
-keepattributes Exceptions,InnerClasses,Signature
-keepattributes *Annotation*
-keepattributes SourceFile,LineNumberTable-keep public interface com.facebook.**
-keep public interface com.tencent.**
-keep public interface com.umeng.socialize.**
-keep public interface com.umeng.socialize.sensor.**
-keep public interface com.umeng.scrshot.**-keep public class com.umeng.socialize.* {*;}
-keep public class javax.**
-keep public class android.webkit.**-keep class com.facebook.**
-keep class com.umeng.scrshot.**
-keep public class com.tencent.** {*;}
-keep class com.umeng.socialize.sensor.**-keep class com.tencent.mm.sdk.openapi.WXMediaMessage {*;}
-keep class com.tencent.mm.sdk.openapi.** implements com.tencent.mm.sdk.openapi.WXMediaMessage$IMediaObject {*;}
-keep class im.yixin.sdk.api.YXMessage {*;}
-keep class im.yixin.sdk.api.** implements im.yixin.sdk.api.YXMessage$YXMessageData{*;}-keep public class [your_pkg].R$*{
public static final int *;
}
3.以上工作完成，混淆工作就完成了一大半了，最後需要做的就是在project.properties文件中加上你的混淆文件申明瞭，如下：
proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt
4. OK， 最後一步，打簽名包測試，如果有問題，仔細看下Log也許有得類不能混淆，那麼你得加入到proguard-project.txt文件中
-------以上就是混淆代碼的全過程了
最後貼上proguard-project.txt的全部代碼：
- # To enable ProGuard in your project, edit project.properties
- # to define the proguard.config property as described in that file.
- #
- # Add project specific ProGuard rules here.
- # By default, the flags in this file are appended to flags specified
- # in ${sdk.dir}/tools/proguard/proguard-android.txt
- # You can edit the include path and order by changing the ProGuard
- # include property in project.properties.
- #
- # For more details, see
- # http://developer.android.com/guide/developing/tools/proguard.html
- # Add any project specific keep options here:
- # 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 *;
- #}
- -optimizationpasses 5
- -dontusemixedcaseclassnames
- -dontskipnonpubliclibraryclasses
- -dontpreverify
- -verbose
- -optimizations !code/simplification/arithmetic,!field/*,!class/merging/*
- -keepattributes *Annotation*
- -keepattributes Signature
- -libraryjars libs/apns_1.0.6.jar
- -libraryjars libs/armeabi/libBaiduMapSDK_v2_3_1.so
- -libraryjars libs/armeabi/liblocSDK4.so
- -libraryjars libs/baidumapapi_v2_3_1.jar
- -libraryjars libs/core.jar
- -libraryjars libs/gesture-imageview.jar
- -libraryjars libs/gson-2.0.jar
- -libraryjars libs/infogracesound.jar
- -libraryjars libs/locSDK_4.0.jar
- -libraryjars libs/ormlite-android-4.48.jar
- -libraryjars libs/ormlite-core-4.48.jar
- -libraryjars libs/universal-image-loader-1.9.0.jar
- -keep class com.baidu.** { *; }
- -keep class vi.com.gdi.bgl.android.**{*;}
- -keep public class * extends android.app.Fragment
- -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 * extends android.support.v4.**
- -keep public class com.android.vending.licensing.ILicensingService
- -keep class com.google.gson.stream.** { *; }
- -keep class com.google.gson.examples.android.model.** { *; }
- -keep class com.uuhelper.Application.** { *; }
- -keep class net.sourceforge.zbar.** { *; }
- -keep class com.google.android.gms.** { *; }
- -keep class com.bank.pingan.model.** { *; }
- -keep public class * extends com.j256.ormlite.android.apptools.OrmLiteSqliteOpenHelper
- -keep public class * extends com.j256.ormlite.android.apptools.OpenHelperManager
- -keep class com.android.vending.licensing.ILicensingService
- -keep class android.support.v4.** { *; }
- -keep class org.apache.commons.net.** { *; }
- -keep class com.tencent.** { *; }
- -keep class com.umeng.** { *; }
- -keep class com.umeng.analytics.** { *; }
- -keep class com.umeng.common.** { *; }
- -keep class com.umeng.newxp.** { *; }
- -keep class com.j256.ormlite.** { *; }
- -keep class com.j256.ormlite.android.** { *; }
- -keep class com.j256.ormlite.field.** { *; }
- -keep class com.j256.ormlite.stmt.** { *; }
- -dontwarn android.support.v4.**
- -dontwarn org.apache.commons.net.**
- -dontwarn com.tencent.**
- -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 *;
- }
- -keepclasseswithmembers class * {
- public <init>(android.content.Context);
- }
- -dontshrink
- -dontoptimize
- -dontwarn com.google.android.maps.**
- -dontwarn android.webkit.WebView
- -dontwarn com.umeng.**
- -dontwarn com.tencent.weibo.sdk.**
- -dontwarn com.facebook.**
- -keep enum com.facebook.**
- -keepattributes Exceptions,InnerClasses,Signature
- -keepattributes *Annotation*
- -keepattributes SourceFile,LineNumberTable
- -keep public interface com.facebook.**
- -keep public interface com.tencent.**
- -keep public interface com.umeng.socialize.**
- -keep public interface com.umeng.socialize.sensor.**
- -keep public interface com.umeng.scrshot.**
- -keep public class com.umeng.socialize.* {*;}
- -keep public class javax.**
- -keep public class android.webkit.**
- -keep class com.facebook.**
- -keep class com.umeng.scrshot.**
- -keep public class com.tencent.** {*;}
- -keep class com.umeng.socialize.sensor.**
- -keep class com.tencent.mm.sdk.openapi.WXMediaMessage {*;}
- -keep class com.tencent.mm.sdk.openapi.** implements com.tencent.mm.sdk.openapi.WXMediaMessage$IMediaObject {*;}
- -keep class im.yixin.sdk.api.YXMessage {*;}
- -keep class im.yixin.sdk.api.** implements im.yixin.sdk.api.YXMessage$YXMessageData{*;}
- -keep public class [your_pkg].R$*{
- public static final int *;
- }
- 2015-05-25更新
- 1. 依賴工程的jar 申明：
- 以下是郵件發送的實例
- -libraryjars ../KlowerBase/libs/mail-activation.jar
- -libraryjars ../KlowerBase/libs/mail-additionnal.jar
- -libraryjars ../KlowerBase/libs/mail.jar
- 2. 解決郵件發送時報的以異常
- -keep class javax.mail.**{*;}
- -keep class com.sun.mail.**{*;}
- -keep class javax.activation.**{*;}
- -keep class org.apache.harmony.**{*;}
- -keep class java.security.**{*;}
- #解決：can't find referenced class java.beans.Beans
- -dontwarn org.apache.commons.collections.BeanMap
- -dontwarn java.beans.**
- #解決：can't find referenced class javax.security.sasl.Sasl
- -dontwarn com.sun.mail.imap.protocol.**