Problems with using Android compatible package android-support-v4.jar

Project needs to use viewpager, do not hesitate to introduce the official android-support-v4.jar

The development process is not surprising. Two problems occurred during signature packaging.

1. An error occurred while exporting the signature APK using eclipse.

[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)

Cause:

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

Solution: in the project's proguard. cfg file, add

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

The specific dontwarn entries can be modified based on the error.

2. the APK generated using the command line script cannot be run, when running to a class related to the android-support-v4.jar, classnotfoundexception appears
Work und: when running the DX command, add the android-support-v4.jar to class. Dex

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

Reference

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