Android Robotium如何管理测试用例的执行顺序?

I am trying to use Robotium to automate the testing of an application. The test cases were documented and they are supposed to be test in specific order. But it seems that Junit run the tests in alphabetic order.. how do I rearrange the order of execution? Here is the basic structure of my test class: I am trying to use Robotium to automate the tes