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Questions tagged [viewdidunload]

62 questions
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2 answers

Where to release all my views if i received memory warnings?

If I am receiving memory warnings where exactly I have to release all my views & data ? Whether I have to release in - (void)didReceiveMemoryWarning or in - (void)viewDidUnload
Tariq
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releasing in viewDidUnload makes any difference or not?

I am new to iPhone development. I am using some buttons and labels in my app. I am releasing all these buttons and labels in dealloc function. I am also releasing them in viewDidUnload. - (void)viewDidUnload { [super viewDidUnload]; self.ans1 =…
iUser
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What is the pair method for viewDidLoad if viewDidUnload is deprecated?

Is it dealloc or which method? If I setup some code in viewDidLoad, I want to unistall this setup from the pair method of viewDidLoad.. For example viewDidLoad & viewDidDisappear combo is not always clever combination. And sometimes is better to do…
luky
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Cordova iOS custom Plugin : handle memory warning

I'm developing an iOS app that use cordova(2.1), and some custom plugins. The problem that I'm trying to face is the following : When I show my plugin(basically a camera plugin with more features than the built-in cordova plugin) sometime I receive…
oiledCode
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UIViewController not released when added to a UINavigationController

Below is reduced bit of code to demonstrate a problem I am a having. I allocate and init a view controller. The init method is the standard Objective C init, so the view controller isn't doing anything yet. Then I create a navigationController…
Jonoogle
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Object release in Objective-C: Why release an object twice in viewDidUnload and dealloc method?

I have a question about object release in objective-c. I saw some sample codes in Chapter 9 of "Beginning iphone 4 Development"(Page 287). The sample code release an object twice: both in viewDidUnload and dealloc method. Here are the sample…
Sam Wei
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iOS: viewWillUnload?

For a UIViewController, in case its view is unloaded, I want to save (to an NSString ivar) the text string that a user has entered into a UITextView (or UITextField). Where should I do this? I'm assuming the UITextView will already have been reset…
ma11hew28
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Way to remove all -viewDidUnload from project's view controllers

As Apple's Official Doc said: -viewDidUnload is deprecated in iOS 6.0. Views are no longer purged under low-memory conditions and so this method is never called. Meanwhile, it's better to remove all -viewDidUnload implements from projects that the…
Kjuly
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Memory management of view while using NavigationController

I changed navigation in my application from using UITabBarController to u UINavigationController. I.e. former solution (1st version) was based only on the TabBarController - 4 ViewControllers (one simple TableView, one simple custom view and one…
Vitek
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Method for release resources in iOS 6.0

Possible Duplicate: iOS 6 - viewDidUnload migrate to didReceiveMemoryWarning? In iOS 6.0 viewDidUnload: and other something methods has been deprecated. If I need release some resources like UIWebView or network connection, what method should I…
Ilya Ilin
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viewDidUnload deprecation, but what about strong references to secondary view?

In iOS6 the method viewDidUnload became deprecated, the memory management has changed a lot for a UIViewController. Here is a little brief about the new patterns. The part that occupies more memory in a view controller is the view (and of course…
Andrea
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When to call [super viewDidLoad] and [super viewDIdUnload]?

In most of my code, I have the following setup for viewDidLoad and viewDidUnload: - (void)viewDidLoad { [super viewDidLoad]; //do stuff... } - (void)viewDidUnload { [super viewDidUnload]; //do stuff... } However, I got to…
MikeS
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Will Apple reject an app for manually calling viewDidUnload

viewDidUnload is no longer called in iOS6, so as a workaround for an app that does some necessary things in viewDidUnload I have done this: - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // only want to do this on iOS…
soleil
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iOS - viewDidUnload not called, but didReceiveMemoryWarning is called

Trying to hunt down the cause of crashing on certain devices. I am noticing that my view controllers are receiving didReceiveMemoryWarning, but NOT viewDidUnload. And according to Apple: you would not use didReceiveMemoryWarning to release…
soleil
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Memory issue with iphone app development

I am developing an iphone application which uses very simple interface and does database handling at the backend. I am enabling ARC OPTION as well. My viewDidLoad method is as follows: - (void)viewDidLoad { [super viewDidLoad]; // Do any…
abhishek behl
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