Android 官方API查询网址 https://developer.android.google.cn/
第三方镜像Android API查询网址 (比官方浏览速度快一些,缺点现有API较低) http://www.android-doc.com/guide/topics/resources/animation-resource.html
大名鼎鼎的菜鸟教程 https://www.runoob.com/
Android的Demo项目 https://github.com/aosp-mirror/platform_development/tree/master/samples/ApiDemos
例子学习 https://alleniverson.gitbooks.io/android-develop/content/Android%E5%9F%BA%E7%A1%80/
Android studio 快捷键:https://www.cnblogs.com/Seachal/p/5591600.html
腾讯ui Demo项目:https://qmuiteam.com/android github项目:https://github.com/Tencent/QMUI_Android