极光

http://docs.jiguang.cn/jpush/client/Android/android_3m/ 推送

https://www.cnblogs.com/laoyimou/p/6211218.html  集成

http://www.rongcloud.cn/?utm_source=360&utm_medium=cpc&utm_term=%E6%9E%81%E5%85%89sdk&utm_content=%E7%AB%9E%E5%93%81sdk&utm_campaign=sdk 登录极光

环信

http://docs.easemob.com/im/200androidclientintegration/10androidsdkimport