ios6

问题 I've gotten pretty comfortable using the viewDidLoad method to execute things I want done at the beginning of a view, but reading one of Apple's tutorials they set the data controller for the class in the awakeFromNib method and did nothing in the awakeFromNib. I swapped it and it seemingly worked identically in my app, but I'm not sure if it was better to have it in awakeFromNib or viewDidLoad. When should I use either one? 回答1: awakeFromNib is called when the associated nib file with a

问题 I am new to iOS programming.I find the tutorial for displaying the image view as cover flow as shown in link http://code4app.net/ios/iCarousel-for-Cover-Flow/4f87d2db06f6e79d32000000 but my requirement is to display the list of tableviews as cover flow. Please help me. 回答1: Here i have used iCarousel view. After integrating the SDK(import iCarousel.h & iCarousel.m) into your application. Create ICarousel view and integrated table view in all the icarousel sub views. Here is my code In .h file

问题 How can I programmatically copy formatted text (e.g. italic ) from a UITextView, so that when pasted into another program (e.g. Mail) the formatting will be retained? I'm assuming the correct approach is to copy an NSAttributedString to the pasteboard. Right now, I am able to copy a regular string to the pasteboard via the following: NSString *noteTitleAndBody = [NSString stringWithFormat:@"%@\n%@", [document title], [document body]]; UIPasteboard *pasteboard = [UIPasteboard generalPasteboard

问题 I have an issue. My current location is displayed and centered in a map view however the map region doesn't get zoomed in to. I tried taking Rob's advice by taking span and region out of the didUpdateToLocation method but I must not have implemented it right. I don't think it's recognizing my call to setRegion in viewDidLoad and my buttons aren't being recognized. Please check my code below and point out the mistake(s). My goal is to be able to zoom in and out of my location using the

问题 After creating a pass, I can add it to device, register device by saving data to database. Next, how can I generate GET request to webServiceURL/version/devices/deviceLibraryIdentifier/registrations/passTypeIdentifier?passesUpdatedSince=tag ? I see this in console: Apr 4 10:08:26 CamMobs-iPod4 passd[12098] <Warning>: Generating GET request with URL <http:/192.168.1.202:8888/passesWebserver/v1/devices/02d6566cc59dc34e3abd116eed498898/registrations/pass.cam-mob.passbookpasstest> Apr 4 10:08:26

问题 1) I copy image from UIPasteboard using this method [UIPasteboard generalPasteboard].image; 2) After creating an image i want to clean the UIPasteboard . so i write this method [UIPasteboard generalPasteboard].image = nil; But this working fine on ios 4 and ios 5 But it gives problem on ios 6. 3) In my app i want to clean UIPasteboard or nil the UIPasteboard value. How can i do this on ios 6? 回答1: This is what I currently use UIPasteboard *pb = [UIPasteboard generalPasteboard]; [pb setValue:@

问题 I have Custom UIView class in one textview. Custom View class frame set only some one view controller. My thought is when text view delegate methods textviewdidbeginediting animation of textview based on the keyboard height not worked correctly. I am using following code static const CGFloat KEYBOARD_ANIMATION_DURATION = 0.3; static const CGFloat MINIMUM_SCROLL_FRACTION = 0.2; static const CGFloat MAXIMUM_SCROLL_FRACTION = 0.2; static const CGFloat PORTRAIT_KEYBOARD_HEIGHT = 216; static const

问题 I can enable an UILocalNotification in my application, I proceed like this: in my UIViewController if(_endDate){ UILocalNotification *localNotif = [[UILocalNotification alloc] init]; if (localNotif == nil) return; localNotif.fireDate = _endDate; localNotif.timeZone = [NSTimeZone defaultTimeZone]; localNotif.alertBody = @"go"; localNotif.soundName = UILocalNotificationDefaultSoundName; localNotif.applicationIconBadgeNumber = 1; [[UIApplication sharedApplication] scheduleLocalNotification

问题 I facing issue in iOS 6 iPad On button click -> open popover with UITable On select a row -> modalviewcontroller open. dismiss modalviewcontroller (it works fine) Then again click on button, app crash on button click (1st step) this issue is only in iOS 6. It works fine in iOS 5, iOS 4.3 *** Terminating app due to uncaught exception 'UIViewControllerHierarchyInconsistency', reason: 'A view can only be associated with at most one view controller at a time! View <UITableView: 0xb847400; frame =

问题 I am working in Xcode 4.5.2, targeting iOS6 for an iPad app, using storyboards and segues. Preamble: my root controller (loaded by the app delegate) is a splash screen with only an image, an upgrade button and an open button. App takes a few seconds to load. I have shouldAutorotate and supportedInterfaceOrientations in all three of my full screen controllers. For rotation notification, I am using the following two methods in my root view controller: - (void)awakeFromNib { [UIDevice