Jar mismatch! Fix your solution for dependencies

Recently, when compiling Android projects in Unbuntu, I encountered a lot of problems, the most recent problem is jar mismatch! Fix your dependencies seems to be a lack of dependency, to resolve the dependencies therein.
When developing an Android project, it is sometimes necessary to refer to multiple projects as a library. When referencing a project, there are sometimes "Jar mismatch! Fix your dependencies "error. This is because the jar package (Android-support-v4.jar) for two items is inconsistent.

 解决方法是把2个jar都删除，然后各自加上最新的jar包。

Right-click on the item, select the Android tool option, and then select the Add Support Library option.

This will solve the problem.

Jar mismatch! Fix your solution for dependencies