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2014/10/15 ¤U¤È 10:12:52
iphone Programming Glossary: preventHow to intercept touches events on a MKMapView or UIWebView objects? http://stackoverflow.com/questions/1049889/how-to-intercept-touches-events-on-a-mkmapview-or-uiwebview-objects duplicates Apple's code. Here's what I do Implement a gesture recognizer that cannot be prevented and that cannot prevent other gesture recognizers. Add it to the map view and then use the gestureRecognizer's.. code. Here's what I do Implement a gesture recognizer that cannot be prevented and that cannot prevent other gesture recognizers. Add it to the map view and then use the gestureRecognizer's touchesBegan.. UITouch touch forEvent UIEvent event BOOL canBePreventedByGestureRecognizer UIGestureRecognizer preventingGestureRecognizer return NO BOOL canPreventGestureRecognizer UIGestureRecognizer preventedGestureRecognizer..
How to implement re-ordering of CoreData records? http://stackoverflow.com/questions/1077568/how-to-implement-re-ordering-of-coredata-records YES ... UPDATE THE MODEL then SAVE CONTEXT ... userDrivenDataModelChange NO and also prevent the notifications to do anything as changes are already done by the user void controllerWillChangeContent..
How to detect iPhone 5 (widescreen devices)? http://stackoverflow.com/questions/12446990/how-to-detect-iphone-5-widescreen-devices mainScreen bounds .size.height double 568 DBL_EPSILON The use of fabs with the epsilon is here to prevent precision errors when comparing floating points as pointed in the comments by H2CO3. So from now on..
iPhone viewWillAppear not firing http://stackoverflow.com/questions/131062/iphone-viewwillappear-not-firing view controller this message directly. Failing to send the view controller this message will prevent any associated animation from being displayed. The problem is that they don't describe how to do this...
Changing my CALayer's anchorPoint moves the view http://stackoverflow.com/questions/1968017/changing-my-calayers-anchorpoint-moves-the-view layer changing that anchorPoint while maintaining the same position moves the layer. In order to prevent this movement you would need to adjust the layer's position to account for the new anchorPoint. One..
Disabling implicit animations in -[CALayer setNeedsDisplayInRect:] http://stackoverflow.com/questions/2244147/disabling-implicit-animations-in-calayer-setneedsdisplayinrect
Universal iPhone/iPad application debug compilation error for iPhone testing http://stackoverflow.com/questions/2618889/universal-iphone-ipad-application-debug-compilation-error-for-iphone-testing the line. Update 12 21 2011 As of iOS 4.2 you should no longer need to weak link frameworks to prevent errors like this. As Marco Arment describes if you build with iOS 4.2 or later and target down to iPhone..
What is the best way to enter numeric values with decimal points? http://stackoverflow.com/questions/276382/what-is-the-best-way-to-enter-numeric-values-with-decimal-points a number pad and a keyboard with numbers and symbols. Is there an easy way to use the latter and prevent any non numeric input from being entered without having to regex the final result Thanks iphone cocoa..
iPhone Safari Web App opens links in new window http://stackoverflow.com/questions/2898740/iphone-safari-web-app-opens-links-in-new-window Screen all links will open in new window in Safari and lose full screen functionality . How can I prevent it I couldn't find any help only the same unanswered question. iphone safari iphone standalone web..
iPhone Landscape FAQ and Solutions http://stackoverflow.com/questions/2953351/iphone-landscape-faq-and-solutions if you have some subviews that should be able to autorotate what the master controller will prevent . The usage of undocumented API's to force a certain interface orientation is not an option either...
Install xCode 3.2.3 w/ iPhone SDK 4, get “Base SDK missing”, can't see other SDKs http://stackoverflow.com/questions/3161385/install-xcode-3-2-3-w-iphone-sdk-4-get-base-sdk-missing-cant-see-other-sdk for these. And if you want to support 4.0 features you'll have to do some conditional code to prevent crashes on 3.0 devices. Fun. You can still download from Apple and install a previous Xcode version..
What's the easiest way to get the current location of an iPhone? http://stackoverflow.com/questions/459355/whats-the-easiest-way-to-get-the-current-location-of-an-iphone that the class I wrote checks the timestamp on location updates and ignores any that are old to prevent the problem of getting stale data from core location. This is the singleton class I wrote. Please note..
Is there a way to make drawRect work right NOW? http://stackoverflow.com/questions/4739748/is-there-a-way-to-make-drawrect-work-right-now thread so anything that runs for a long time in the main thread lengthy calculations etc. will prevent the interface updates from being started. Additionally anything that runs for a while on the main thread..
http://stackoverflow.com/questions/706344/lock-unlock-events-iphone
Customize the MKAnnotationView callout http://stackoverflow.com/questions/8018841/customize-the-mkannotationview-callout identifier if self nil NSBundle mainBundle loadNibNamed identifier owner self options nil prevent the tap and double tap from reaching views underneath UITapGestureRecognizer tapGestureRecognizer .....
How to intercept touches events on a MKMapView or UIWebView objects? http://stackoverflow.com/questions/1049889/how-to-intercept-touches-events-on-a-mkmapview-or-uiwebview-objects ways turn out to involve a lot of hackish programming that imperfectly duplicates Apple's code. Here's what I do Implement a gesture recognizer that cannot be prevented and that cannot prevent other gesture recognizers. Add it to the map view and then use the gestureRecognizer's touchesBegan touchesMoved etc. to your fancy. How.. lot of hackish programming that imperfectly duplicates Apple's code. Here's what I do Implement a gesture recognizer that cannot be prevented and that cannot prevent other gesture recognizers. Add it to the map view and then use the gestureRecognizer's touchesBegan touchesMoved etc. to your fancy. How to detect any tap inside..
How to implement re-ordering of CoreData records? http://stackoverflow.com/questions/1077568/how-to-implement-re-ordering-of-coredata-records toIndexPath NSIndexPath toIndexPath userDrivenDataModelChange YES ... UPDATE THE MODEL then SAVE CONTEXT ... userDrivenDataModelChange NO and also prevent the notifications to do anything as changes are already done by the user void controllerWillChangeContent NSFetchedResultsController controller if userDrivenDataModelChange..
How to detect iPhone 5 (widescreen devices)? http://stackoverflow.com/questions/12446990/how-to-detect-iphone-5-widescreen-devices all of this #define IS_IPHONE_5 fabs double UIScreen mainScreen bounds .size.height double 568 DBL_EPSILON The use of fabs with the epsilon is here to prevent precision errors when comparing floating points as pointed in the comments by H2CO3. So from now on you can use it in standard if else statements if IS_IPHONE_5..
iPhone viewWillAppear not firing http://stackoverflow.com/questions/131062/iphone-viewwillappear-not-firing and it has a view controller you should send the associated view controller this message directly. Failing to send the view controller this message will prevent any associated animation from being displayed. The problem is that they don't describe how to do this. What the hell does directly mean. How do you indirectly add..
Changing my CALayer's anchorPoint moves the view http://stackoverflow.com/questions/1968017/changing-my-calayers-anchorpoint-moves-the-view Because the position is relative to the anchorPoint of the layer changing that anchorPoint while maintaining the same position moves the layer. In order to prevent this movement you would need to adjust the layer's position to account for the new anchorPoint. One way I've done this is to grab the layer's bounds multiply the..
Disabling implicit animations in -[CALayer setNeedsDisplayInRect:] http://stackoverflow.com/questions/2244147/disabling-implicit-animations-in-calayer-setneedsdisplayinrect
Universal iPhone/iPad application debug compilation error for iPhone testing http://stackoverflow.com/questions/2618889/universal-iphone-ipad-application-debug-compilation-error-for-iphone-testing delegate and do the interface specific layout further down the line. Update 12 21 2011 As of iOS 4.2 you should no longer need to weak link frameworks to prevent errors like this. As Marco Arment describes if you build with iOS 4.2 or later and target down to iPhone OS 3.1 individual classes are now weak linked and should..
What is the best way to enter numeric values with decimal points? http://stackoverflow.com/questions/276382/what-is-the-best-way-to-enter-numeric-values-with-decimal-points provides a keyboard that's specific for this purpose only a number pad and a keyboard with numbers and symbols. Is there an easy way to use the latter and prevent any non numeric input from being entered without having to regex the final result Thanks iphone cocoa touch share improve this question A more elegant solution..
iPhone Safari Web App opens links in new window http://stackoverflow.com/questions/2898740/iphone-safari-web-app-opens-links-in-new-window adding icon to Home Screen. If the web is launched from Home Screen all links will open in new window in Safari and lose full screen functionality . How can I prevent it I couldn't find any help only the same unanswered question. iphone safari iphone standalone web app share improve this question I found JavaScript solution..
iPhone Landscape FAQ and Solutions http://stackoverflow.com/questions/2953351/iphone-landscape-faq-and-solutions controllers added to those said subviews. There's also a problem if you have some subviews that should be able to autorotate what the master controller will prevent . The usage of undocumented API's to force a certain interface orientation is not an option either. The solution The best solution I have found so far is a modification..
Install xCode 3.2.3 w/ iPhone SDK 4, get “Base SDK missing”, can't see other SDKs http://stackoverflow.com/questions/3161385/install-xcode-3-2-3-w-iphone-sdk-4-get-base-sdk-missing-cant-see-other-sdk your compliance to 3.0 only calls nor does it have a simulator for these. And if you want to support 4.0 features you'll have to do some conditional code to prevent crashes on 3.0 devices. Fun. You can still download from Apple and install a previous Xcode version or SDK cf. here . Yes you can install multiple Xcode versions..
What's the easiest way to get the current location of an iPhone? http://stackoverflow.com/questions/459355/whats-the-easiest-way-to-get-the-current-location-of-an-iphone off point as you are building something. You will also notice that the class I wrote checks the timestamp on location updates and ignores any that are old to prevent the problem of getting stale data from core location. This is the singleton class I wrote. Please note that it is a little rough around the edges #import CoreLocation..
Is there a way to make drawRect work right NOW? http://stackoverflow.com/questions/4739748/is-there-a-way-to-make-drawrect-work-right-now through the run loop. These updates are performed on the main thread so anything that runs for a long time in the main thread lengthy calculations etc. will prevent the interface updates from being started. Additionally anything that runs for a while on the main thread will also cause your touch handling to be unresponsive...
http://stackoverflow.com/questions/706344/lock-unlock-events-iphone
Customize the MKAnnotationView callout http://stackoverflow.com/questions/8018841/customize-the-mkannotationview-callout self class self super initWithAnnotation annotation reuseIdentifier identifier if self nil NSBundle mainBundle loadNibNamed identifier owner self options nil prevent the tap and double tap from reaching views underneath UITapGestureRecognizer tapGestureRecognizer ... return self To be able to push another view controller from..
How to intercept touches events on a MKMapView or UIWebView objects? http://stackoverflow.com/questions/1049889/how-to-intercept-touches-events-on-a-mkmapview-or-uiwebview-objects programming that imperfectly duplicates Apple's code. Here's what I do Implement a gesture recognizer that cannot be prevented and that cannot prevent other gesture recognizers. Add it to the map view and then use the gestureRecognizer's touchesBegan.. duplicates Apple's code. Here's what I do Implement a gesture recognizer that cannot be prevented and that cannot prevent other gesture recognizers. Add it to the map view and then use the gestureRecognizer's touchesBegan touchesMoved etc. to.. reset void ignoreTouch UITouch touch forEvent UIEvent event BOOL canBePreventedByGestureRecognizer UIGestureRecognizer preventingGestureRecognizer return NO BOOL canPreventGestureRecognizer UIGestureRecognizer preventedGestureRecognizer return NO..
How to implement re-ordering of CoreData records? http://stackoverflow.com/questions/1077568/how-to-implement-re-ordering-of-coredata-records userDrivenDataModelChange YES ... UPDATE THE MODEL then SAVE CONTEXT ... userDrivenDataModelChange NO and also prevent the notifications to do anything as changes are already done by the user void controllerWillChangeContent NSFetchedResultsController..
How to detect iPhone 5 (widescreen devices)? http://stackoverflow.com/questions/12446990/how-to-detect-iphone-5-widescreen-devices fabs double UIScreen mainScreen bounds .size.height double 568 DBL_EPSILON The use of fabs with the epsilon is here to prevent precision errors when comparing floating points as pointed in the comments by H2CO3. So from now on you can use it in standard..
iPhone viewWillAppear not firing http://stackoverflow.com/questions/131062/iphone-viewwillappear-not-firing send the associated view controller this message directly. Failing to send the view controller this message will prevent any associated animation from being displayed. The problem is that they don't describe how to do this. What the hell does..
Preventing a UITabBar from applying a gradient to its icon images http://stackoverflow.com/questions/1355480/preventing-a-uitabbar-from-applying-a-gradient-to-its-icon-images to its icon images When I make icons for a UITabBar it applies a gradient to the images. I need to know how to prevent it from having this gradient. iphone uitabbar uitabbaritem share improve this question Apple added tab bar customization.. custom tab bar custom icons UITabBarItem item UITabBarItem alloc init item.title @ foo setting custom images prevents the OS from applying a tint color item setFinishedSelectedImage UIImage imageNamed @ tab1_active.png withFinishedUnselectedImage..
http://stackoverflow.com/questions/1610542/custom-iphone-keyboard teh user selects an editable text control. Currently my controller knows the target and the target is uneditable to prevent the standard keyboard. Is there a way to hook into the behavior of text controls so I use my own keyboard easily Thanks..
Changing my CALayer's anchorPoint moves the view http://stackoverflow.com/questions/1968017/changing-my-calayers-anchorpoint-moves-the-view anchorPoint of the layer changing that anchorPoint while maintaining the same position moves the layer. In order to prevent this movement you would need to adjust the layer's position to account for the new anchorPoint. One way I've done this is..
Disabling implicit animations in -[CALayer setNeedsDisplayInRect:] http://stackoverflow.com/questions/2244147/disabling-implicit-animations-in-calayer-setneedsdisplayinrect
Universal iPhone/iPad application debug compilation error for iPhone testing http://stackoverflow.com/questions/2618889/universal-iphone-ipad-application-debug-compilation-error-for-iphone-testing layout further down the line. Update 12 21 2011 As of iOS 4.2 you should no longer need to weak link frameworks to prevent errors like this. As Marco Arment describes if you build with iOS 4.2 or later and target down to iPhone OS 3.1 individual..
What is the best way to enter numeric values with decimal points? http://stackoverflow.com/questions/276382/what-is-the-best-way-to-enter-numeric-values-with-decimal-points for this purpose only a number pad and a keyboard with numbers and symbols. Is there an easy way to use the latter and prevent any non numeric input from being entered without having to regex the final result Thanks iphone cocoa touch share improve..
UIKeyboardBoundsUserInfoKey is deprecated, what to use instead? http://stackoverflow.com/questions/2807339/uikeyboardboundsuserinfokey-is-deprecated-what-to-use-instead what to use instead I'm working on an iPad app using 3.2 sdk. I'm dealing with obtaining the keyboard size to prevent my textfields from hidding behind it. I'm getting a Warning in Xcode UIKeyboardBoundsUserInfoKey is deprecated what should..
iPhone Safari Web App opens links in new window http://stackoverflow.com/questions/2898740/iphone-safari-web-app-opens-links-in-new-window launched from Home Screen all links will open in new window in Safari and lose full screen functionality . How can I prevent it I couldn't find any help only the same unanswered question. iphone safari iphone standalone web app share improve..
iPhone Landscape FAQ and Solutions http://stackoverflow.com/questions/2953351/iphone-landscape-faq-and-solutions There's also a problem if you have some subviews that should be able to autorotate what the master controller will prevent . The usage of undocumented API's to force a certain interface orientation is not an option either. The solution The best..
Install xCode 3.2.3 w/ iPhone SDK 4, get “Base SDK missing”, can't see other SDKs http://stackoverflow.com/questions/3161385/install-xcode-3-2-3-w-iphone-sdk-4-get-base-sdk-missing-cant-see-other-sdk does it have a simulator for these. And if you want to support 4.0 features you'll have to do some conditional code to prevent crashes on 3.0 devices. Fun. You can still download from Apple and install a previous Xcode version or SDK cf. here . Yes..
Behaviour for significant change location API when terminated/suspended? http://stackoverflow.com/questions/3421242/behaviour-for-significant-change-location-api-when-terminated-suspended application is in the background it should do minimal work and avoid any tasks such as querying the network that might prevent it from returning before the allocated time expires. If it does not your application may be terminated. This suggests you..
What's the easiest way to get the current location of an iPhone? http://stackoverflow.com/questions/459355/whats-the-easiest-way-to-get-the-current-location-of-an-iphone You will also notice that the class I wrote checks the timestamp on location updates and ignores any that are old to prevent the problem of getting stale data from core location. This is the singleton class I wrote. Please note that it is a little..
Is there a way to make drawRect work right NOW? http://stackoverflow.com/questions/4739748/is-there-a-way-to-make-drawrect-work-right-now performed on the main thread so anything that runs for a long time in the main thread lengthy calculations etc. will prevent the interface updates from being started. Additionally anything that runs for a while on the main thread will also cause..
http://stackoverflow.com/questions/5360846/suspend-the-application iOS application programmatically because people tend to interpret this as a crash. However if external circumstances prevent your application from functioning as intended you need to tell your users about the situation and explain what they can..
http://stackoverflow.com/questions/706344/lock-unlock-events-iphone
Customize the MKAnnotationView callout http://stackoverflow.com/questions/8018841/customize-the-mkannotationview-callout annotation reuseIdentifier identifier if self nil NSBundle mainBundle loadNibNamed identifier owner self options nil prevent the tap and double tap from reaching views underneath UITapGestureRecognizer tapGestureRecognizer ... return self To be..
Disable Magnifying Glass in UITextview http://stackoverflow.com/questions/10640781/disable-magnifying-glass-in-uitextview in the m file of subclassed UITextview added code void addGestureRecognizer UIGestureRecognizer gestureRecognizer Prevent zooming but not panning if gestureRecognizer isKindOfClass UILongPressGestureRecognizer class gestureRecognizer.enabled..
Optimized Image Loading in a UIScrollView http://stackoverflow.com/questions/1098234/optimized-image-loading-in-a-uiscrollview . You should track whether an NSOperation has been initiated using an atomic property on the ThumbnailView instance. Prevent queuing another operation if that property is set and only unset that property along with loaded at the end of the NSOperation..
Prevent scrolling in a MKMapView, also when zooming http://stackoverflow.com/questions/11830516/prevent-scrolling-in-a-mkmapview-also-when-zooming scrolling in a MKMapView also when zooming The scrollEnabled seems to be breakable once the user starts pinching in a MKMapView..
Prevent automatic popToRootViewController on double-tap of UITabBarController http://stackoverflow.com/questions/1849975/prevent-automatic-poptorootviewcontroller-on-double-tap-of-uitabbarcontroller automatic popToRootViewController on double tap of UITabBarController The default behavior of a UITabBarController is to..
Background threads consuming 100% CPU on iPhone 3GS causes latent main thread http://stackoverflow.com/questions/1940903/background-threads-consuming-100-cpu-on-iphone-3gs-causes-latent-main-thread NSURLRequest URLRequest TTURLConnection connection TTURLConnection alloc initWithRequest URLRequest delegate self Prevent the thread from exiting while the asynchronous connection completes the work. Delegate methods will continue the run loop..
Preserve HTML font-size when iPhone orientation changes from portrait to landscape http://stackoverflow.com/questions/2710764/preserve-html-font-size-when-iphone-orientation-changes-from-portrait-to-landsca You can disable this behavior through the webkit text size adjust CSS property html webkit text size adjust none Prevent font scaling in landscape The use of this property is described further in the Safari Web Content Guide . share improve..
Prevent a UISearchDisplayController from hiding the navigation bar http://stackoverflow.com/questions/2813118/prevent-a-uisearchdisplaycontroller-from-hiding-the-navigation-bar a UISearchDisplayController from hiding the navigation bar Whenever a user begins editing a UISearchDisplayController 's..
Prevent the animation when clicking “Back” button in a navigation bar? http://stackoverflow.com/questions/3119528/prevent-the-animation-when-clicking-back-button-in-a-navigation-bar the animation when clicking &ldquo Back&rdquo button in a navigation bar My application has a navigation controller and..
Prevent default keyboard from showing when UITextField is pressed http://stackoverflow.com/questions/3175849/prevent-default-keyboard-from-showing-when-uitextfield-is-pressed default keyboard from showing when UITextField is pressed Is there a way to make a custom keyboard to pop up when a user..
Prevent duplicates when importing RSS feed to Core Data http://stackoverflow.com/questions/3185885/prevent-duplicates-when-importing-rss-feed-to-core-data duplicates when importing RSS feed to Core Data Trying to import a RSS feed into Core Data. Once they are imported when..
UIWebView font is thinner in portrait than landscape http://stackoverflow.com/questions/3220662/uiwebview-font-is-thinner-in-portrait-than-landscape the drastic font size change not the subtle weight change that I am observing html webkit text size adjust none Prevent font scaling in landscape Can anyone explain this The simulator does not do it but my iPad iPhone 3GS and iPhone 4 all have..
http://stackoverflow.com/questions/3466434/font-size-issue-with-iphone
Build fat static library (device + simulator) using Xcode and SDK 4+ http://stackoverflow.com/questions/3520977/build-fat-static-library-device-simulator-using-xcode-and-sdk-4 ALREADYINVOKED false then echo RECURSION I am NOT the root invocation so I'm NOT going to recurse else # CRITICAL # Prevent infinite recursion Xcode sucks export ALREADYINVOKED true echo RECURSION I am the root ... recursing all missing build targets..
Prevent caching of .css files in UIWebView loaded from disk http://stackoverflow.com/questions/3549508/prevent-caching-of-css-files-in-uiwebview-loaded-from-disk caching of .css files in UIWebView loaded from disk In the iPad project I'm working on I've got a UIWebView inside of the..
Prevent iPhone app to run on iPad http://stackoverflow.com/questions/4186746/prevent-iphone-app-to-run-on-ipad iPhone app to run on iPad I'm shipping two binaries one for iPhone iTouch and the other for iPad. It's the same application...
Turning an iPhone or iPod into a wireless webcam http://stackoverflow.com/questions/5258696/turning-an-iphone-or-ipod-into-a-wireless-webcam or less need to solve four problems Get the camera feed. Convert encode this to the right format. Stream the data. Prevent the phone from locking itself and going into deep sleep. The first one is fairly simple and Apple has as always provided..
Prevent indentation of UITableViewCell (contentView) while editing http://stackoverflow.com/questions/5789467/prevent-indentation-of-uitableviewcell-contentview-while-editing indentation of UITableViewCell contentView while editing Is it possible to keep the contentView.frame always the same regardless..
How to prevent app running in phone-gap from scrolling vertically? http://stackoverflow.com/questions/6193016/how-to-prevent-app-running-in-phone-gap-from-scrolling-vertically jm function onDeviceReady do your thing navigator.notification.alert PhoneGap is working touchMove function event Prevent scrolling on this element event.preventDefault script style #container width 100 height 100 style head body onload onBodyLoad..
Prevent Splash Screen from showing after returning from background http://stackoverflow.com/questions/8143151/prevent-splash-screen-from-showing-after-returning-from-background Splash Screen from showing after returning from background I've noticed something that happens in every app i develop...
Prevent iOS mobile safari from going idle / auto-locking / sleeping? http://stackoverflow.com/questions/9709891/prevent-ios-mobile-safari-from-going-idle-auto-locking-sleeping iOS mobile safari from going idle auto locking sleeping In an iOS app you can set application.idleTimerDisabled YES to..
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