使用android兼容包android-support-v4.jar出现的一些问题

项目需要用到ViewPager，毫不犹豫的引入了官方提供的android-support-v4.jar

开发过程平淡无奇，签名打包时出现了两个问题

1.使用eclipse导出签名apk出现错误

[2011-11-03 16:07:52 - AndroidViewPager] Proguard returned with error code 1. See console
[2011-11-03 16:07:52 - AndroidViewPager] Note: there were 95 duplicate class definitions.
[2011-11-03 16:07:52 - AndroidViewPager] Warning: android.support.v4.os.ParcelableCompatCreatorHoneycombMR2: can't find superclass or interface android.os.Parcelable$ClassLoaderCreator
[2011-11-03 16:07:52 - AndroidViewPager] Warning: android.support.v4.app.ActivityCompatHoneycomb: can't find referenced method 'void invalidateOptionsMenu()' in class android.app.Activity
[2011-11-03 16:07:52 - AndroidViewPager] Warning: android.support.v4.app.ActivityCompatHoneycomb: can't find referenced method 'void dump(java.lang.String,java.io.FileDescriptor,java.io.PrintWriter,java.lang.String[])' in class android.app.Activity
[2011-11-03 16:07:52 - AndroidViewPager] Warning: android.support.v4.os.ParcelableCompatCreatorHoneycombMR2: can't find referenced class android.os.Parcelable$ClassLoaderCreator
[2011-11-03 16:07:52 - AndroidViewPager] Warning: android.support.v4.os.ParcelableCompatCreatorHoneycombMR2: can't find referenced class android.os.Parcelable$ClassLoaderCreator
[2011-11-03 16:07:52 - AndroidViewPager] Warning: android.support.v4.view.MenuCompatHoneycomb: can't find referenced method 'void setShowAsAction(int)' in class android.view.MenuItem
[2011-11-03 16:07:52 - AndroidViewPager] Warning: there were 3 unresolved references to classes or interfaces.
[2011-11-03 16:07:52 - AndroidViewPager]          You may need to specify additional library jars (using '-libraryjars'),
[2011-11-03 16:07:52 - AndroidViewPager]          or perhaps the '-dontskipnonpubliclibraryclasses' option.
[2011-11-03 16:07:52 - AndroidViewPager] Warning: there were 3 unresolved references to program class members.
[2011-11-03 16:07:52 - AndroidViewPager]          Your input classes appear to be inconsistent.
[2011-11-03 16:07:52 - AndroidViewPager]          You may need to recompile them and try again.
[2011-11-03 16:07:52 - AndroidViewPager]          Alternatively, you may have to specify the options
[2011-11-03 16:07:52 - AndroidViewPager]          '-dontskipnonpubliclibraryclasses' and/or
[2011-11-03 16:07:52 - AndroidViewPager]          '-dontskipnonpubliclibraryclassmembers'.
[2011-11-03 16:07:52 - AndroidViewPager] java.io.IOException: Please correct the above warnings first.
[2011-11-03 16:07:52 - AndroidViewPager]    at proguard.Initializer.execute(Initializer.java:308)
[2011-11-03 16:07:52 - AndroidViewPager]    at proguard.ProGuard.initialize(ProGuard.java:210)
[2011-11-03 16:07:52 - AndroidViewPager]    at proguard.ProGuard.execute(ProGuard.java:85)
[2011-11-03 16:07:52 - AndroidViewPager]    at proguard.ProGuard.main(ProGuard.java:499)

原因：

Android Compatibility library referencing classes that only exist in recent versions of the Android API

解决方法：在项目的proguard.cfg文件中添加

-dontwarn **HoneycombMR2
-dontwarn **CompatICS
-dontwarn **Honeycomb
-dontwarn **CompatIcs*
-dontwarn **CompatFroyo
-dontwarn **CompatGingerbread

具体要dontwarn哪些条目，可以根据报错来进行相应的修改

2.使用命令行脚本生成的apk无法运行，当运行到android-support-v4.jar相关的类时，出现ClassNotFoundException

解决方法：运行dx命令时，将android-support-v4.jar加入class.dex

%DX% --dex --output=%OUT_FOLDER%\classes.dex %OUT_CLASS_FOLDER% %THIRD_JAR%

参考
http://stackoverflow.com/questions/7993608/i-am-getting-error-while-export-my-android-application-from-eclipse-which-use-an http://snmoney.blog.163.com/blog/static/440058201181011468397/