一个tabbarController,里面有1,2 两个ViewController,当从1切换到2时,执行的顺序是
2 viewWillAppear
1 viewWillDisappear
1 viewDidDisappear
2 viewDidAppear
2->1:
1 viewWillAppear
2 viewWillDisappear
2 viewDidDisappear
1 viewDidAppear
navController中,1进入2
1 viewWillDisappear
2 viewWillAppear
1 viewDidDisappear // 已经几乎完全显示后显示了2的画面之后(有些背景等可能还没加载)
2 viewDidAppear
2返回1:
2 viewWillDisappear
1 viewWillAppear
2 viewDidDisappear
1 viewDidAppear
modol窗口
1 viewWillDisappear
2 viewWillAppear
2 viewDidAppear
1 viewDidDisappear
2->1
2 viewWillDisappear
1 viewWillAppear
1 viewDidAppear
2 viewDidDisappear