Questions tagged [viewdidunload]
62 questions
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In XCode 4.6.2, why does creating an outlet on a UITextView auto-generate a viewDidUnload method
I have a simple "About" view that I've made in a storyboard. Basically all it has is a UITextView. It's controller looks like this:
// AboutViewController.m
#import "AboutViewController.h"
@interface AboutViewController()
@end
@implementation…
Bryce Thomas
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1 answer
App running slow after loading viewcontroller, then unload about 15-20 times
Using:
Xcode 4.6
Storyboards
ARC
Model segue to SecondViewController
I have an app that has the main ViewController that loads a new veiwController when the device is rotated to the right. When the app starts everything works great. If I rotate the…
Eric
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0
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2 answers
NSNotification & didReceiveMemoryWarning in iOS 6
As of iOS 6.0 , viewDidUnload method is deprecated. Before iOS 6 I used to removeObserver of NSNotification in viewDidUnload method. But since it is deprecated , I have moved it to didReceiveMemoryWarning. Now if my app receives the low memory…
iOSAppDev
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0 answers
didReceiveMemoryWarning using a Tab Bar
I have a UITabBar holding 3 UIViewControllers.
One being a map, the other - a table, and the third - my own custom controller.
I noticed lately that my app has some issues when it comes to operating on low memory, and it's due to me not being clear…
Ted
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1 answer
Release retained property pointing at self.view
In an instance of an UIViewController with ARC best practice would be to "release" any retained subviews of the main view (e.g. self.myOutlet = nil) in - viewDidUnload, and my guess is self.view = nil isn't strictly necessary at this point.
What to…
Ali
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2 answers
ios5: stopping views from being unloaded / stopping viewDidUnload being called
Given that iOS6 no longer unloads views, and hence no longer calls UIViewController's viewDidUnload, I was wondering if there is a reliable way to cause this same behaviour on iOS5?
That is, I'd really like to stop my views unloading on iOS5, for…
JosephH
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2 answers
Is there any memory leak in following code?
I have uibutton as property and releasing it in dealloc. I am just using it to hide or unhide but the frequency of its usage is quite high.
@property (retain, nonatomic) IBOutlet UIButton *object;
-(void)onsomebuttonclick
{
…
Arun jalota
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0
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1 answer
memory keep on increasing when a opening a same uiviewcontroller again in iphone
I have two uiviewcontroller and i am releasing all the resources in dealloc and setting them to nil in didunload but still when i came across to both viewcontrollers the memory keep on increasing.
I am keeping the track of memory used and free…
Arun jalota
- 252
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0
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1 answer
Programmatically unloading all views on iOS Device
Edited title
I am using Core Data to store some data I collect from my server. In appDelegate's applicationDidBecomeActive, I check if the app needs to download new data (from a version-variable on my server). If it has old information, it downloads…
Sti
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1 answer
iOS memory management - low memory warnings and viewDidUnload
I'm getting this error when I get a memory warning:
*** -[TheViewController_iPhone productImages]: message sent to deallocated instance
Xcode shows the error being on the line noted below:
- (void)viewDidUnload
{
[super viewDidUnload];
…
soleil
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0
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1 answer
popViewController to a UIViewController initialized with a UIStoryboardSegue
I have a list controller that fires a performSegueWithIdentifier to load a detailViewController of the item that was selected. To initialize the detailViewController I set a property on it in the prepareForSegue that gets called before the…
Wolfsokta
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0
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2 answers
didReceiveMemoryWarning Crash
-Using ARC
-I have 5 separate view controllers all subclassing a class I made called "UIViewControllerWithLoadingView" which subclasses UIViewController.
-In both the subclasses and superclass I allocate and deallocate properties like…
MobileMon
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1 answer
should I write [super viewDidLoad]?
I'm writing a navigation based app. (it has modal segues too)
I'm not sure if I should keep [super viewDidLoad]; call or not. should I write code after this line of code or before it? how about [super viewDidUnload]; and similars?
Milad
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3 answers
viewDidUnload not called for alloc/init initialized viewcontroller with no xib file
Why isn't viewDidUnload method called, when I'm not using xib and use alloc/init to initialize my ViewController when i simulate memory warning for any iOS version via Simulator? It seems as if this method is never called.
If I create controller via…
Valerii Pavlov
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0
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1 answer
Set nil to child view controllers in viewDidUnload
My iOS app is navigation-based with the following structure:
@interface ViewControllerA : UIViewController
@property (strong,nonatomic) ViewControllerB *viewControllerB;
@property (strong,nonatomic) ViewControllerC…
Nimit Pattanasri
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