android 3rd party库

Question

I wanted to use gson in my android project so I followed a tutorial and done this

1. Create a new folder, libs, in your Eclipse/Android project.
2. Right-click libs and choose Import -> General -> File System, then Next, Browse in the filesystem to find the library's parent directory (ie: where you downloaded it to).
3. Click OK, then click the directory name (not the checkbox) in the left pane, then check the relevant JAR in the right pane. This puts the library into your project (physically).
4. Right-click on your project, choose Build Path -> Configure Build Path, then click the Libraries tab, then Add JARs..., navigate to your new JAR in the libs directory and add it. (This, incidentally, is the moment at which your new JAR is converted for use on Android.)

it worked perfectly in android 2.2 but with android 4.0.3 it is throwing an exception 05-06 19:12:18.946: E/AndroidRuntime(602): java.lang.NoClassDefFoundError: com.google.gson.Gson

Answer 1

在android 4中，请务必将文件夹称为libs而不是lib或其他名称，否则它将无法正常工作。

Answer 2

1. create a folder call 'lib' in your project root folder
2. copy your Jar files into lib folder
3. now right click on the Jar file and Build Path > Add to Build Path, and your are done