2014/10/15 下午 10:15:50

iphone Programming Glossary: viewdidunload

Iphone - How to encrypt NSData with public key and decrypt with private key?

http://stackoverflow.com/questions/10072124/iphone-how-to-encrypt-nsdata-with-public-key-and-decrypt-with-private-key

lifecycle void viewDidLoad super viewDidLoad Do any additional setup after loading the view typically from a nib. void viewDidUnload super viewDidUnload Release any retained subviews of the main view. e.g. self.myOutlet nil void viewWillAppear BOOL animated.. super viewDidLoad Do any additional setup after loading the view typically from a nib. void viewDidUnload super viewDidUnload Release any retained subviews of the main view. e.g. self.myOutlet nil void viewWillAppear BOOL animated super viewWillAppear..

When should I release objects in -(void)viewDidUnload rather than in -dealloc?

http://stackoverflow.com/questions/1158788/when-should-i-release-objects-in-voidviewdidunload-rather-than-in-dealloc

should I release objects in void viewDidUnload rather than in dealloc What is the void viewDidUnload is good for Could I not just relase everything in dealloc If the.. should I release objects in void viewDidUnload rather than in dealloc What is the void viewDidUnload is good for Could I not just relase everything in dealloc If the view did unload wouldn't dealloc be called anyway iphone.. improve this question In addition to what has already been indicated I wanted to elaborate more about logic behind viewDidUnload . One of the most important reasons for implementing it is that UIViewController subclasses commonly also contain owning..

Setting action for back button in navigation controller

http://stackoverflow.com/questions/1214965/setting-action-for-back-button-in-navigation-controller

Is there a way to overwrite the default back action or is there a method that is always called when leaving a view viewDidUnload doesn't do that iphone cocoa touch uinavigationcontroller uibarbuttonitem share improve this question Try putting this..

What happens if I don't retain IBOutlet?

http://stackoverflow.com/questions/1250518/what-happens-if-i-dont-retain-iboutlet

to keep it around in case of a memory warning. For this reason you should nil out the property in the UIViewController viewDidUnload method. This will get rid of the final release on the UITextField and deallocate it as intended. If using the property you.. is possible to write a correct program in this case its easy to make the error of over releasing the text field in the viewDidUnload method. Over releasing an object is a crash inducing error setting a property that is already nil again to nil is not. My..

What exactly must I do in viewDidUnload?

http://stackoverflow.com/questions/2261972/what-exactly-must-i-do-in-viewdidunload

exactly must I do in viewDidUnload I tend to release my stuff in dealloc and now iPhone OS 3.0 introduced this funny viewDidUnload method where they say Release.. exactly must I do in viewDidUnload I tend to release my stuff in dealloc and now iPhone OS 3.0 introduced this funny viewDidUnload method where they say Release any retained subviews of the main view. e.g. self.myOutlet nil So viewDidUnload seems to get.. funny viewDidUnload method where they say Release any retained subviews of the main view. e.g. self.myOutlet nil So viewDidUnload seems to get called when the view of the view controller has been kicked off from memory. And if I have subviews attached..

Re-Apply currency formatting to a UITextField on a change event

http://stackoverflow.com/questions/2388448/re-apply-currency-formatting-to-a-uitextfield-on-a-change-event

as currency ... self textField _textField shouldChangeCharactersInRange NSMakeRange 0 0 replacementString @ 0 void viewDidUnload self.textField nil super viewDidUnload This is the code in the UITextFieldDelegate method textField shouldChangeCharactersInRange.. shouldChangeCharactersInRange NSMakeRange 0 0 replacementString @ 0 void viewDidUnload self.textField nil super viewDidUnload This is the code in the UITextFieldDelegate method textField shouldChangeCharactersInRange replacementString BOOL textField..

shouldAutorotateToInterfaceOrientation doesn't work

http://stackoverflow.com/questions/2868132/shouldautorotatetointerfaceorientation-doesnt-work

and UIDevice currentDevice endGeneratingDeviceOrientationNotifications to my viewDidLoad and viewDidUnload respectively didn't worked either. I'm lost.. Any help will do just one more info... all my Views are of type UIControl..

Can somebody explain the process of a UIViewController birth (which method follows which)?

http://stackoverflow.com/questions/5107604/can-somebody-explain-the-process-of-a-uiviewcontroller-birth-which-method-follo

a superview i.e. if it is not currently part of the active view heirarchy . The message flow goes as follows view nil viewDidUnload 2a. Loading the view programmatically If you choose to override loadView you can create a view subviews other viewControllers.. navigated away viewController viewDidDisappear ... viewController setView nil memory warning perhaps viewController viewDidUnload ... viewController loadView user navigated back view awakeFromNib viewController viewDidLoad viewController viewWillAppear..

Embedding YouTube videos on iOS

http://stackoverflow.com/questions/5117617/embedding-youtube-videos-on-ios

it doesn't have a superview. super didReceiveMemoryWarning Release any cached data images etc that aren't in use. void viewDidUnload Release any retained subviews of the main view. e.g. self.myOutlet nil void dealloc super dealloc @end It compiles correctly..