design and implement a simple, attractive, and easy-to-use travel expense tracking application. For each travel claim (for which expenses are to be reimbursed), the application should record expense items.
uri of the vedio https://www.youtube.com/watch?v=Ql8J-KJYg8Q&feature=youtu.be
reference: http://stackoverflow.com/questions/2197741/how-can-i-send-emails-from-my-android-application https://github.com/abramhindle/student-picker http://www.cnblogs.com/plokmju/p/android_datepiceker.html http://blog.csdn.net/janronehoo/article/details/8746447 http://stackoverflow.com/questions/2197741/how-can-i-send-emails-from-my-android-application http://handsomeliuyang.iteye.com/blog/1315283 http://www.mkyong.com/android/android-date-picker-example/ https://github.com/bichengyan/ToDoList https://github.com/mayoudong1993/youdong-TET http://stackoverflow.com/questions/26119284/android-spinner-onnothingselected