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2014/10/15 ¤U¤È 10:14:38
iphone Programming Glossary: subclassesWhen 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 more about logic behind viewDidUnload . One of the most important reasons for implementing it is that UIViewController subclasses commonly also contain owning references to various subviews in the view hierarchy. These properties could have been set..
@synthesize vs @dynamic, what are the differences? http://stackoverflow.com/questions/1160498/synthesize-vs-dynamic-what-are-the-differences class itself but somewhere else like the superclass or will be provided at runtime . Uses for @dynamic are e.g. with subclasses of NSManagedObject CoreData or when you want to create an outlet for a property defined by a superclass that was not defined..
Cocoa: What's the Difference between the frame and the bounds? http://stackoverflow.com/questions/1210047/cocoa-whats-the-difference-between-the-frame-and-the-bounds What's the Difference between the frame and the bounds UIView and its subclasses all have the properties frame and bounds . What's the difference Please don't quote the Apple docs I've already read them..
how to remove subviews from scrollview? http://stackoverflow.com/questions/1310723/how-to-remove-subviews-from-scrollview an if statement to the above loop checking for class equality. For example to only remove all the UIButtons or custom subclasses of UIButton that exist in a view you could use something like Again valid UIView view for UIView subview in view subviews..
Dragging an UIView inside UIScrollView http://stackoverflow.com/questions/1481826/dragging-an-uiview-inside-uiscrollview this question I was struggling with this same problem I was trying to do a interface with a lot of cards UIView subclasses on a cork board and have the cork board area scrollable but still able to drag and drop the cards. I was doing the hitTest..
How to use the first character as a section name http://stackoverflow.com/questions/1741093/how-to-use-the-first-character-as-a-section-name in the model and check the transient box. There are a few ways to implement the getter. If you are generating creating subclasses then you can add it in the subclass's implementation .m file. Otherwise you can create a category on NSManagedObject I put..
iVar property, access via self? http://stackoverflow.com/questions/4088801/ivar-property-access-via-self If you have a defined property for an ivar you should use it rather than accessing the ivar directly. That allows subclasses to override the setter getter and do something different to just fetching the value from the ivar. The only exception is..
http://stackoverflow.com/questions/4089238/implementing-nscopying your obejct Vendor it ™d look like this id copyWithZone NSZone zone id copy self class alloc init if copy Copy NSObject subclasses copy setVendorID self.vendorID copyWithZone zone autorelease copy setAvailableCars self.availableCars copyWithZone zone..
How do you trigger a block after a delay, like -performSelector:withObject:afterDelay:? http://stackoverflow.com/questions/4139219/how-do-you-trigger-a-block-after-a-delay-like-performselectorwithobjectafter
Event handling for iOS - how hitTest:withEvent: and pointInside:withEvent: are related? http://stackoverflow.com/questions/4961386/event-handling-for-ios-how-hittestwithevent-and-pointinsidewithevent-are-r of all of subviews and if the return from a specific subview is YES then calls pointInside withEvent of that subview's subclasses iphone share improve this question It seems quite a basic question. But I agree with you the document is not as clear..
What are the Dangers of Method Swizzling in Objective C? http://stackoverflow.com/questions/5339276/what-are-the-dangers-of-method-swizzling-in-objective-c being loaded you'll be safe. The load method guarantees that the super class load method will be called before any subclasses. We'll get the exact right order Difficult to understand looks recursive Looking at a traditionally defined swizzled method..
Am I abusing UIViewController Subclassing? http://stackoverflow.com/questions/5691226/am-i-abusing-uiviewcontroller-subclassing called in my app I came across what may be a gross misunderstanding I hold about the intended use of UIViewController subclasses. According to the following post viewWillAppear does not run when using addSubView and the link to this blog post http blog.carbonfive.com.. created custom controllers like UINavigationControllers. I'm certainly guilty of adding the views of UIViewController subclasses to the views of other UIViewController subclasses. In fact I thought this was more or less the whole idea of Apple's implementation.. I'm certainly guilty of adding the views of UIViewController subclasses to the views of other UIViewController subclasses. In fact I thought this was more or less the whole idea of Apple's implementation of MVC generally... One overall VC with..
How to subclass UINavigationBar for a UINavigationController programatically? http://stackoverflow.com/questions/6672229/how-to-subclass-uinavigationbar-for-a-uinavigationcontroller-programatically
How to know the UITableview row number http://stackoverflow.com/questions/9274494/how-to-know-the-uitableview-row-number row number in the switch value changed event. iphone ios uitableview uiswitch share improve this question Tags subclasses or view hierarchy navigation are too much work . Do this in your action method CGPoint hitPoint sender convertPoint CGPointZero..
UITableView : detecting click on '-' button in edit mode http://stackoverflow.com/questions/2448583/uitableview-detecting-click-on-button-in-edit-mode UITableViewCell that implements willTransitionToState and or didTransitionToState methods. willTransitionToState Subclasses of UITableViewCell can implement this method to animate additional changes to a cell when it is changing state. UITableViewCell..
splitViewController with Two NavigationController linking protocols http://stackoverflow.com/questions/5263128/splitviewcontroller-with-two-navigationcontroller-linking-protocols second UINavigationController to the DetailViewController inside the MainWindow.xib. I then pop a new UIViewController Subclasses when a toolbar item is clicked. I use the following code to conduct the pop DocumentDetailVC DetailViewController DocumentDetailVC..
when is the dealloc method called? http://stackoverflow.com/questions/5630660/when-is-the-dealloc-method-called retain count becoming 0 . See Memory Management Programming Guide for more details on the use of these methods. Subclasses must implement their own versions of dealloc to allow the release of any additional memory consumed by the object ”such as..
http://stackoverflow.com/questions/5788963/view-and-viewcontroller view support for managing modal views and support for rotating views in response to device orientation changes. Subclasses such as UINavigationController and UITabBarController provide additional behavior for managing complex hierarchies of view..
Navigation Based Application with TabBar http://stackoverflow.com/questions/599200/navigation-based-application-with-tabbar for in a basic way. What you will want to do after you get this working is to change the UIViewControllers to Custom Subclasses that you create to hold the code for each view. If you are also using Interface Builder change the init to initWithNibNamed..
UISearchBar inputAccessoryView http://stackoverflow.com/questions/7058133/uisearchbar-inputaccessoryview The UIResponder of which UISearchBar is an indirect subclass of class documentation details a way to accomplish this Subclasses that want to attach custom controls to either a system supplied input view such as the keyboard or a custom input view one..
Best practice when implementing copyWithZone: http://stackoverflow.com/questions/9907154/best-practice-when-implementing-copywithzone zone to make sure you are creating a copy using the appropriate class. The example you give for 002 shows exactly why Subclasses will call super copyWithZone zone and expect to get back an instance of the appropriate class not an instance of the super..
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