viewdidunload_开发者

How to prevent page from unloading when app is active

I have a few tabs in my app. I am currently facing an issue whereby my pages gets unloaded whenever the memory gets low (especi开发者_Python百科ally if I bring up the camera in my app).[详细]

2023-04-10 15:50 分类：问答

Which UIViewController properties should I set in -initWithNibName:bundle: vs. -viewDidLoad?

I understand that I should set self.title in 开发者_开发百科-initWithNibName:bundle:. What about self.navigationItem.titleView?[详细]

2023-04-02 15:58 分类：问答

Best practice in viewDidUnload?

What is the best practice in viewDidUnload? To set to nil IBOutlets only or each instance variable too (release before)?[详细]

2023-04-02 08:24 分类：问答

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 viewDidUn[详细]

2023-04-01 08:47 分类：问答

Best practices for releasing retained views?

Is this the correct (best?) way to release views retained in viewDidLoad, in iOS 4.x or lower? Is there anything else to consid开发者_开发百科er?[详细]

2023-03-27 20:33 分类：问答

How to recover from viewDidUnload(after memory warnings), using UISplitViewController

I\'m making a split-view based iPad application(Portrait mode only), and I want to know how to recover initial state after viewDidUnload is called.[详细]

2023-03-24 22:03 分类：问答

iOS memory management - viewDidUnload

I开发者_StackOverflow社区 have a navigation based app. The screen List has a UITableView with a list of books. The list of books is in a property NSArray that was built dynamically by executing an HTT[详细]

2023-03-24 07:37 分类：问答

viewDidUnload called after dealloc?

When I\'m debugging my iPad app, I found because of low memory, some view controllers\' viewDidUnload got called. But seconds later, their viewDidLoad are called. And then again because of low memory,[详细]

2023-02-11 15:06 分类：问答