Creating and using custom JAR in Android project

I am trying to create and use jar file in an Android project under Eclipse. I have tried various methods without any success. Here are the steps:

• Create jar file from the source files jar -cf lib.jar *.java开发者_运维问答
• Copy jar file to libs folder
• Right click, Build Path->Add to Build path
• Now, compiler gives unresolved symbols if I try to use a class from the jar file?

Can someone please let me know correct method to create and use an external jar file for the Android project under eclipse.

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This worked fine for me:

1)Place Jars in assets folder.

2)Right click on project name.

3)Select properties.

4)Select Java build path.

5) Select Libraries.

6) Click Add Jars.