0.Android开发者指南

https://developer.android.google.cn/guide
https://developer.android.com/guide
http://hukai.me/android-training-course-in-chinese/input/gestures/index.html

1.Android四大组件

https://www.cnblogs.com/pepcod/archive/2013/02/11/2937403.html
一、Activity详解
二、Service详解
三、Broadcast Receiver详解
四、Content Provider详解

1.1 Android的Activity
https://www.cnblogs.com/caobotao/p/4987015.html
https://blog.csdn.net/chennai1101/article/details/81671258

https://www.runoob.com/android/android-tutorial.html

2.Android六大布局：

https://www.cnblogs.com/web424/p/6961764.html

3.Android控件学习

https://blog.csdn.net/harvic880925/article/details/50995268
View是所有控件的基类

4.android openGL开发

https://blog.csdn.net/qq_32175491/article/details/79091647?depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromBaidu-1&utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromBaidu-1
https://blog.csdn.net/qq_32175491/article/details/79755424

5.Android 中的观察者模式Observer框架

https://blog.csdn.net/feiduclear_up/article/details/42167487

6.写控件如何添加自定义属性

https://blog.csdn.net/harvic880925/article/details/46537767