修复发帖、回帖导致程序崩溃的Bug
程序崩溃原因：activity.finish()在前dialog.dismiss()在后

Signed-off-by: wangwang4git <wangwang4whu@126.com>
Merge pull request #20 from ljp215/develop

去掉无用注释，格式化代码
发表或评论失败的话，不退出activity
Merge pull request #21 from double0291/develop

发表或评论失败的话，不退出activity
Merge pull request #5 from wangwang4git/develop

Develop