探究UIViewController生命周期
·1 分钟
OC
目录
进入 ViewController2
+[ViewController2 load] // 加载时就会调用
+[ViewController2 initialize] // 第一次接收通知时调用(alloc)
-[ViewController2 loadView]
-[ViewController2 viewDidLoad]
-[ViewController viewWillDisappear:]
-[ViewController2 viewWillAppear:]
-[ViewController2 viewWillLayoutSubviews]
-[ViewController2 viewDidLayoutSubviews]
-[ViewController viewDidDisappear:]
-[ViewController2 viewDidAppear:]
返回 ViewController
-[ViewController2 viewWillDisappear:]
-[ViewController viewWillAppear:]
-[ViewController2 viewDidDisappear:]
-[ViewController viewDidAppear:]
-[ViewController2 dealloc]
当添加了一个子视图时(Storyboard) - 进入
+[ViewController2 initialize]
+[TestView2 initialize]
-[TestView2 willMoveToSuperview:]
-[TestView2 didMoveToSuperview]
-[ViewController2 loadView]
-[ViewController2 viewDidLoad]
-[ViewController viewWillDisappear:]
-[ViewController2 viewWillAppear:]
-[TestView2 willMoveToWindow:]
-[TestView2 didMoveToWindow]
-[ViewController2 viewWillLayoutSubviews]
-[ViewController2 viewDidLayoutSubviews]
-[TestView2 layoutSubviews]
-[TestView2 drawRect:]
-[ViewController viewDidDisappear:]
-[ViewController2 viewDidAppear:]
当添加了一个子视图时(Storyboard) - 返回
-[ViewController2 viewWillDisappear:]
-[ViewController viewWillAppear:]
-[TestView2 willMoveToWindow:]
-[TestView2 didMoveToWindow]
-[ViewController2 viewDidDisappear:]
-[ViewController viewDidAppear:]
-[ViewController2 dealloc]
-[TestView2 willMoveToSuperview:]
-[TestView2 didMoveToSuperview]
单独拆分
View2的生命周期>单独拆分View2的生命周期
#
+[TestView2 initialize]
-[TestView2 willMoveToSuperview:]
-[TestView2 didMoveToSuperview]
-[TestView2 willMoveToWindow:]
-[TestView2 didMoveToWindow]
-[TestView2 layoutSubviews]
-[TestView2 drawRect:]
-[TestView2 willMoveToWindow:]
-[TestView2 didMoveToWindow]
-[TestView2 willMoveToSuperview:]
-[TestView2 didMoveToSuperview]
给 View2 动态添加一个子视图时
+[TestView initialize]
-[TestView willMoveToWindow:]
-[TestView willMoveToSuperview:
-[TestView didMoveToWindow]
-[TestView didMoveToSuperview]
-[TestView2 didAddSubview:]
-[TestView2 addSubview:]
-[TestView2 layoutSubviews]
-[TestView layoutSubviews]
-[TestView drawRect:]
修改子视图 frame 时
-[TestView willMoveToWindow:]
-[TestView willMoveToSuperview:]
-[TestView didMoveToWindow]
-[TestView didMoveToSuperview]
-[TestView2 didAddSubview:]
-[TestView2 addSubview:]
-[TestView2 layoutSubviews]
-[TestView layoutSubviews]
-[TestView layoutSubviews]
-[TestView drawRect:]
简化对View2子视图的操作>
简化对View2子视图的操作 #
被添加时
+[TestView initialize]
-[TestView2 layoutSubviews]
-[TestView layoutSubviews]
-[TestView drawRect:]
被修改时 frame 时
-[TestView2 didAddSubview:]
-[TestView2 addSubview:]
-[TestView2 layoutSubviews]
-[TestView layoutSubviews]
-[TestView layoutSubviews]
-[TestView drawRect:]