ios 页面生命周期 ViewController 与安卓生命周期对比
关闭注册页面
Regist viewWillDisappear - onPause
Regist viewDidDisappear - onStop
Regist deinit - onDestroy
新开注册页面 并关闭
Regist loadView - setContentView
Regist viewDidLoad - onCreate
Regist viewWillAppear - onStart
Regist viewDidLayoutSubviews - onLayout
Regist viewDidLayoutSubviews - onLayout
Regist viewDidAppear - onResume
Regist viewWillDisappear - onPause
Regist viewDidDisappear - onStop
Regist deinit - onDestroy