https://developer.android.google.cn/studio/index.html
https://developer.android.google.cn/studio/intro/index.html
https://developer.android.google.cn/training/basics/firstapp/creating-project.html
https://developer.android.google.cn/training/basics/data-storage/databases.html
https://developer.android.google.cn/training/basics/intents/index.html
原文：http://www.cnblogs.com/freeliver54/p/7040507.html