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iphone Programming Glossary: respondstoselectorHow do I detect when someone shakes an iPhone? http://stackoverflow.com/questions/150446/how-do-i-detect-when-someone-shakes-an-iphone event if event.subtype UIEventSubtypeMotionShake Put in code here to handle shake if super respondsToSelector @selector motionEnded withEvent super motionEnded motion withEvent event BOOL canBecomeFirstResponder..
How to add background image on iphone Navigation bar? http://stackoverflow.com/questions/1692487/how-to-add-background-image-on-iphone-navigation-bar someplace where you create the UINavigationController if navigationController.navigationBar respondsToSelector @selector setBackgroundImage forBarMetrics UIImage image UIImage imageNamed @ NavigationBar.png navigationBar..
How to take a screenshot programmatically http://stackoverflow.com/questions/2200736/how-to-take-a-screenshot-programmatically YES UPDATE April 2011 for retina display change the first line into this if UIScreen mainScreen respondsToSelector @selector scale UIGraphicsBeginImageContextWithOptions self.window.bounds.size NO UIScreen mainScreen..
How can i change the color of pagination dots of UIPageControl? http://stackoverflow.com/questions/2942636/how-can-i-change-the-color-of-pagination-dots-of-uipagecontrol x dotSpanX y 0 y dotSpanY return self.currentPage floor x kDotDiameter kDotSpacer if self.delegate respondsToSelector @selector pageControlPageDidChange self.delegate pageControlPageDidChange self @end share improve..
http://stackoverflow.com/questions/3504173/detect-retina-display an high resolution display retina The best way I've found to do it now is if UIScreen mainScreen respondsToSelector @selector scale YES UIScreen mainScreen scale 2.00 RETINA DISPLAY iphone ios4 retina display share.. which exists in iOS4.x but not iOS3.2 and then check the screen's scale if UIScreen mainScreen respondsToSelector @selector displayLinkWithTarget selector UIScreen mainScreen .scale 2.0 Retina display else non Retina..
Bold & Non-Bold Text In A Single UILabel? http://stackoverflow.com/questions/3586871/bold-non-bold-text-in-a-single-uilabel NSString text @ Updated 2012 10 14 21 59 We only need to create the attributed string if _label respondsToSelector @selector setAttributedText iOS6 and above Use NSAttributedStrings const CGFloat fontSize 13 UIFont..
How do I set up a simple delegate to communicate between two view controllers? http://stackoverflow.com/questions/6168919/how-do-i-set-up-a-simple-delegate-to-communicate-between-two-view-controllers delegate method is optional so we should check that the delegate implements it if self.delegate respondsToSelector @selector childViewController didChooseValue self.delegate childViewController self didChooseValue..
dismissModalViewController AND pass data back http://stackoverflow.com/questions/6203799/dismissmodalviewcontroller-and-pass-data-back you do is in your second view controller add some code before the dismiss code if self.myDelegate respondsToSelector @selector secondViewControllerDismissed self.myDelegate secondViewControllerDismissed @ THIS IS THE.. If you want to pass multiple arguments the code before dismiss looks like this if self.myDelegate respondsToSelector @selector secondViewControllerDismissed argument2 argument3 self.myDelegate secondViewControllerDismissed..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c has code similar to this to see if the delegate responds to the windowDidMove message using respondsToSelector and send it if appropriate. if self delegate respondsToSelector @selector windowDidMove self delegate.. to the windowDidMove message using respondsToSelector and send it if appropriate. if self delegate respondsToSelector @selector windowDidMove self delegate windowDidMove notification The delegate property itself is typically.. void windowDidMove NSNotification notification ... other methods here @end You would then use respondsToSelector as described above when calling this method. Delegates simply implement this method and they're done...
iCloud basics and code sample [closed] http://stackoverflow.com/questions/7795629/icloud-basics-and-code-sample the following text from the cloud @ self.documentText update textView in delegate... if _delegate respondsToSelector @selector noteDocumentContentsUpdated _delegate noteDocumentContentsUpdated self return YES WRITING..
How do I detect when someone shakes an iPhone? http://stackoverflow.com/questions/150446/how-do-i-detect-when-someone-shakes-an-iphone void motionEnded UIEventSubtype motion withEvent UIEvent event if event.subtype UIEventSubtypeMotionShake Put in code here to handle shake if super respondsToSelector @selector motionEnded withEvent super motionEnded motion withEvent event BOOL canBecomeFirstResponder return YES @end You can easily transform any UIView even system..
How to add background image on iphone Navigation bar? http://stackoverflow.com/questions/1692487/how-to-add-background-image-on-iphone-navigation-bar 5 there is an official way to do this. see iOS Developer Library someplace where you create the UINavigationController if navigationController.navigationBar respondsToSelector @selector setBackgroundImage forBarMetrics UIImage image UIImage imageNamed @ NavigationBar.png navigationBar setBackgroundImage image forBarMetrics UIBarMetricsDefault..
How to take a screenshot programmatically http://stackoverflow.com/questions/2200736/how-to-take-a-screenshot-programmatically image data writeToFile @ foo.png atomically YES UPDATE April 2011 for retina display change the first line into this if UIScreen mainScreen respondsToSelector @selector scale UIGraphicsBeginImageContextWithOptions self.window.bounds.size NO UIScreen mainScreen .scale else UIGraphicsBeginImageContext self.window.bounds.size..
How can i change the color of pagination dots of UIPageControl? http://stackoverflow.com/questions/2942636/how-can-i-change-the-color-of-pagination-dots-of-uipagecontrol
http://stackoverflow.com/questions/3504173/detect-retina-display SDK provides an easy way to check if the currentDevice has an high resolution display retina The best way I've found to do it now is if UIScreen mainScreen respondsToSelector @selector scale YES UIScreen mainScreen scale 2.00 RETINA DISPLAY iphone ios4 retina display share improve this question In order to detect the Retina display..
Bold & Non-Bold Text In A Single UILabel? http://stackoverflow.com/questions/3586871/bold-non-bold-text-in-a-single-uilabel that will make our life easier. Yay So if we have this string NSString text @ Updated 2012 10 14 21 59 We only need to create the attributed string if _label respondsToSelector @selector setAttributedText iOS6 and above Use NSAttributedStrings const CGFloat fontSize 13 UIFont boldFont UIFont boldSystemFontOfSize fontSize UIFont regularFont..
How do I set up a simple delegate to communicate between two view controllers? http://stackoverflow.com/questions/6168919/how-do-i-set-up-a-simple-delegate-to-communicate-between-two-view-controllers ChildViewController void handleCloseButton id sender Our delegate method is optional so we should check that the delegate implements it if self.delegate respondsToSelector @selector childViewController didChooseValue self.delegate childViewController self didChooseValue self.slider.value @end In the parent view controller's header..
dismissModalViewController AND pass data back http://stackoverflow.com/questions/6203799/dismissmodalviewcontroller-and-pass-data-back in the first view controller. This part is simple. All you do is in your second view controller add some code before the dismiss code if self.myDelegate respondsToSelector @selector secondViewControllerDismissed self.myDelegate secondViewControllerDismissed @ THIS IS THE STRING TO SEND self dismissModalViewControllerAnimated YES Delegate.. viewcontrollers from a thread in the appdelegate EDIT If you want to pass multiple arguments the code before dismiss looks like this if self.myDelegate respondsToSelector @selector secondViewControllerDismissed argument2 argument3 self.myDelegate secondViewControllerDismissed @ THIS IS THE STRING TO SEND argument2 someObject argument3..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c window setDelegate myDelegate On the NSWindow side it probably has code similar to this to see if the delegate responds to the windowDidMove message using respondsToSelector and send it if appropriate. if self delegate respondsToSelector @selector windowDidMove self delegate windowDidMove notification The delegate property itself is.. has code similar to this to see if the delegate responds to the windowDidMove message using respondsToSelector and send it if appropriate. if self delegate respondsToSelector @selector windowDidMove self delegate windowDidMove notification The delegate property itself is typically declared weak in ARC or assign pre ARC to avoid retain.. from NSWindow.h @interface NSObject NSWindowNotifications void windowDidMove NSNotification notification ... other methods here @end You would then use respondsToSelector as described above when calling this method. Delegates simply implement this method and they're done. This method is straight forward and common in Apple's libraries..
iCloud basics and code sample [closed] http://stackoverflow.com/questions/7795629/icloud-basics-and-code-sample else self.documentText @ NSLog @ UIDocument Loaded the following text from the cloud @ self.documentText update textView in delegate... if _delegate respondsToSelector @selector noteDocumentContentsUpdated _delegate noteDocumentContentsUpdated self return YES WRITING id contentsForType NSString typeName error NSError outError..
iPhone - How do you color an image? http://stackoverflow.com/questions/1223340/iphone-how-do-you-color-an-image 0.0f 0.0f self.size.width self.size.height if UIGraphicsBeginImageContextWithOptions CGFloat imageScale 1.0f if self respondsToSelector @selector scale The scale property is new with iOS4. imageScale self.scale UIGraphicsBeginImageContextWithOptions self.size..
How do I detect when someone shakes an iPhone? http://stackoverflow.com/questions/150446/how-do-i-detect-when-someone-shakes-an-iphone motion withEvent UIEvent event if event.subtype UIEventSubtypeMotionShake Put in code here to handle shake if super respondsToSelector @selector motionEnded withEvent super motionEnded motion withEvent event BOOL canBecomeFirstResponder return YES @end You..
How to add background image on iphone Navigation bar? http://stackoverflow.com/questions/1692487/how-to-add-background-image-on-iphone-navigation-bar see iOS Developer Library someplace where you create the UINavigationController if navigationController.navigationBar respondsToSelector @selector setBackgroundImage forBarMetrics UIImage image UIImage imageNamed @ NavigationBar.png navigationBar setBackgroundImage..
How to take a screenshot programmatically http://stackoverflow.com/questions/2200736/how-to-take-a-screenshot-programmatically @ foo.png atomically YES UPDATE April 2011 for retina display change the first line into this if UIScreen mainScreen respondsToSelector @selector scale UIGraphicsBeginImageContextWithOptions self.window.bounds.size NO UIScreen mainScreen .scale else UIGraphicsBeginImageContext..
How can i change the color of pagination dots of UIPageControl? http://stackoverflow.com/questions/2942636/how-can-i-change-the-color-of-pagination-dots-of-uipagecontrol
http://stackoverflow.com/questions/3504173/detect-retina-display the currentDevice has an high resolution display retina The best way I've found to do it now is if UIScreen mainScreen respondsToSelector @selector scale YES UIScreen mainScreen scale 2.00 RETINA DISPLAY iphone ios4 retina display share improve this question.. on the main screen which exists in iOS4.x but not iOS3.2 and then check the screen's scale if UIScreen mainScreen respondsToSelector @selector displayLinkWithTarget selector UIScreen mainScreen .scale 2.0 Retina display else non Retina display share improve..
Bold & Non-Bold Text In A Single UILabel? http://stackoverflow.com/questions/3586871/bold-non-bold-text-in-a-single-uilabel if we have this string NSString text @ Updated 2012 10 14 21 59 We only need to create the attributed string if _label respondsToSelector @selector setAttributedText iOS6 and above Use NSAttributedStrings const CGFloat fontSize 13 UIFont boldFont UIFont boldSystemFontOfSize..
How do I set up a simple delegate to communicate between two view controllers? http://stackoverflow.com/questions/6168919/how-do-i-set-up-a-simple-delegate-to-communicate-between-two-view-controllers id sender Our delegate method is optional so we should check that the delegate implements it if self.delegate respondsToSelector @selector childViewController didChooseValue self.delegate childViewController self didChooseValue self.slider.value @end..
dismissModalViewController AND pass data back http://stackoverflow.com/questions/6203799/dismissmodalviewcontroller-and-pass-data-back part is simple. All you do is in your second view controller add some code before the dismiss code if self.myDelegate respondsToSelector @selector secondViewControllerDismissed self.myDelegate secondViewControllerDismissed @ THIS IS THE STRING TO SEND self.. the appdelegate EDIT If you want to pass multiple arguments the code before dismiss looks like this if self.myDelegate respondsToSelector @selector secondViewControllerDismissed argument2 argument3 self.myDelegate secondViewControllerDismissed @ THIS IS THE..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c NSWindow side it probably has code similar to this to see if the delegate responds to the windowDidMove message using respondsToSelector and send it if appropriate. if self delegate respondsToSelector @selector windowDidMove self delegate windowDidMove notification.. delegate responds to the windowDidMove message using respondsToSelector and send it if appropriate. if self delegate respondsToSelector @selector windowDidMove self delegate windowDidMove notification The delegate property itself is typically declared weak.. NSWindowNotifications void windowDidMove NSNotification notification ... other methods here @end You would then use respondsToSelector as described above when calling this method. Delegates simply implement this method and they're done. This method is straight..
UINavigationBar's drawRect is not called in iOS 5.0 http://stackoverflow.com/questions/7657465/uinavigationbars-drawrect-is-not-called-in-ios-5-0 rect @end and in viewDidLoad method for iOS5 in your view implementation if self.navigationController.navigationBar respondsToSelector @selector setBackgroundImage forBarMetrics self.navigationController.navigationBar setBackgroundImage UIImage imageNamed..
iCloud basics and code sample [closed] http://stackoverflow.com/questions/7795629/icloud-basics-and-code-sample @ UIDocument Loaded the following text from the cloud @ self.documentText update textView in delegate... if _delegate respondsToSelector @selector noteDocumentContentsUpdated _delegate noteDocumentContentsUpdated self return YES WRITING id contentsForType..
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