00 - 控制器view生命週期
阿新 • • 發佈：2019-01-08
00 - 控制器view生命週期
控制器View的生命週期方法:只要是控制器的生命週期方法,都是以view開頭.
控制器View載入完成時呼叫
- (void)viewDidLoad {
[super viewDidLoad];
}控制器的View顯示完成時呼叫
-(void)viewDidAppear:(BOOL)animated{
[super viewDidAppear:animated];
}控制器的View即將顯示的時候呼叫
-(void)viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];
} 控制器的View完全消失的時候呼叫
-(void)viewDidDisappear:(BOOL)animated{
[super viewDidDisappear:animated];
}控制器的View即將消失的時候呼叫.
-(void)viewWillDisappear:(BOOL)animated{
[super viewWillDisappear:animated];
}佈局控制器View的子控制元件完成時呼叫
-(void)viewDidLayoutSubviews{
[super viewDidLayoutSubviews];
}將要佈局控制器的View裡面子控制元件的時候就會呼叫.
-(void)viewWillLayoutSubviews{
[super viewWillLayoutSubviews];
}ARC的生命週期
viewDidLoad->viewWillAppear->viewDidLayoutSubviews->viewDidLayoutSubviews->viewDidAppear->
viewWillDisappear->viewDidDisappear在非ARC當中.
當前控制器的View即將被銷燬的時候會呼叫
-(void)viewWillUnload{ [super viewWillUnload]; }
當前控制器的View被銷燬的時候會呼叫
-(void)viewDidUnload{
[super viewDidUnload];
清空介面上的資料.
self.dataList = nil;
}
viewDidLoad->viewWillAppear->viewDidLayoutSubviews->viewDidLayoutSubviews->viewDidAppear->
viewWillDisappear->viewDidDisappear->接收到記憶體警告->viewWillUnload->釋放View->viewDidUnload