IOS 控制器生命周期
两个控制器A push B && B pop A
2015-06-10 15:55:41.974 vdavadf[7043:212405] A _ VC viewDidLoad
2015-06-10 15:55:41.975 vdavadf[7043:212405] A _ VC viewWillAppear
2015-06-10 15:55:41.986 vdavadf[7043:212405] A _ VC viewWillLayoutSubviews
2015-06-10 15:55:41.986 vdavadf[7043:212405] A _ VC viewDidLayoutSubviews
VC上View还未显示
2015-06-10 15:55:42.067 vdavadf[7043:212405] A _ VC viewDidAppear
VC上View已经显示
2015-06-10 15:55:55.961 vdavadf[7043:212405] push
2015-06-10 15:55:55.961 vdavadf[7043:212405] A _ VC viewWillDisappear
2015-06-10 15:55:55.962 vdavadf[7043:212405] B _ VC viewWillAppear
2015-06-10 15:55:55.965 vdavadf[7043:212405] B _ VC viewWillLayoutSubviews
2015-06-10 15:55:55.965 vdavadf[7043:212405] B _ VC viewDidLayoutSubviews
2015-06-10 15:55:56.466 vdavadf[7043:212405] A _ VC viewDidDisappear
2015-06-10 15:55:56.467 vdavadf[7043:212405] B _ VC viewDidAppear
2015-06-10 15:57:45.818 vdavadf[7043:212405] pop
2015-06-10 15:57:45.818 vdavadf[7043:212405] B _ VC viewWillDisappear
2015-06-10 15:57:45.818 vdavadf[7043:212405] A _ VC viewWillAppear
2015-06-10 15:57:46.321 vdavadf[7043:212405] B _ VC viewDidDisappear
2015-06-10 15:57:46.321 vdavadf[7043:212405] A _ VC viewDidAppear