总结：微信分享，登录授权文章汇总

推荐使用ShareSDK

SDK	功能	Eclipse	Android Studio	iOS
ShareSDK	简单文本分享	http://www.jianshu.com/p/50b7eca275ab	http://www.jianshu.com/p/1bfc3907ec5f	http://www.jianshu.com/p/670fa02d60b5
登录授权	http://www.jianshu.com/p/2ea8ae0618ef	http://www.jianshu.com/p/55738d667486	http://www.jianshu.com/p/63de511af9ee
官方SDK	简单文本分享	http://www.jianshu.com/p/839dc30f2250	http://www.jianshu.com/p/1b1a89d462f2	http://www.jianshu.com/p/c9b688fdb961
http://www.jianshu.com/p/17bfe6941e32	参考源码：http://download.csdn.net/download/sagittarius1988/9244093	http://www.jianshu.com/p/79ca7c8563dc

注意：登录授权需要进行开发者认证