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2014/10/15 ¤U¤È 10:04:56
iphone Programming Glossary: causesAdd UIPickerView & a Button in Action sheet - How? http://stackoverflow.com/questions/1262574/add-uipickerview-a-button-in-action-sheet-how
Adding Core Data to existing iPhone project http://stackoverflow.com/questions/2032818/adding-core-data-to-existing-iphone-project nil error error Replace this implementation with code to handle the error appropriately. abort causes the application to generate a crash log and terminate. You should not use this function in a shipping..
Objective-C - When to use 'self' http://stackoverflow.com/questions/2385980/objective-c-when-to-use-self same instance variable. iphone objective c cocoa touch share improve this question Using self causes your class' setter for this variable to be called rather than changing the ivar directly. self.mainViewController..
How to change the name of an iOS app? http://stackoverflow.com/questions/238980/how-to-change-the-name-of-an-ios-app sure how to do this with Xcode trying the obvious of changing the application's name in the pinfo causes the signing process to go wrong I think... and my app won't launch giving me a Launcher error. I guess..
Objective-C categories in static library http://stackoverflow.com/questions/2567498/objective-c-categories-in-static-library To resolve this issue the static library should pass the ObjC option to the linker. This flag causes the linker to load every object file in the library that defines an Objective C class or category. While..
How to tell if UIViewController's view is visible http://stackoverflow.com/questions/2777438/how-to-tell-if-uiviewcontrollers-view-is-visible is currently visible so check the main view in the view controller EDIT Invoking the view method causes the view to load if it is not loaded which is unnecessary and may be undesirable. It would be better..
How to filter NSFetchedResultsController (CoreData) with UISearchDisplayController/UISearchBar http://stackoverflow.com/questions/4471289/how-to-filter-nsfetchedresultscontroller-coredata-with-uisearchdisplaycontroll error Replace this implementation with code to handle the error appropriately. abort causes the application to generate a crash log and terminate. You should not use this function in a shipping..
How do I reset after a UIScrollView zoom? http://stackoverflow.com/questions/448285/how-do-i-reset-after-a-uiscrollview-zoom and then have your view manually redraw itself at the new size scale. However this causes a problem because UIScrollView doesn't appear to monitor the content view transform so on the next zoom..
When is layoutSubviews called? http://stackoverflow.com/questions/728372/when-is-layoutsubviews-called in practice and here is what I got init does not cause layoutSubviews to be called duh addSubview causes layoutSubviews to be called on the view being added the view it ™s being added to target view and all.. it ™s frame set only if the size parameter of the frame is different scrolling a UIScrollView causes layoutSubviews to be called on the scrollView and it ™s superview rotating a device only calls layoutSubview..
Add UIPickerView & a Button in Action sheet - How? http://stackoverflow.com/questions/1262574/add-uipickerview-a-button-in-action-sheet-how
Adding Core Data to existing iPhone project http://stackoverflow.com/questions/2032818/adding-core-data-to-existing-iphone-project NSSQLiteStoreType configuration nil URL storeUrl options nil error error Replace this implementation with code to handle the error appropriately. abort causes the application to generate a crash log and terminate. You should not use this function in a shipping application although it may be useful during development...
Objective-C - When to use 'self' http://stackoverflow.com/questions/2385980/objective-c-when-to-use-self that in both cases mainViewController is referring to the same instance variable. iphone objective c cocoa touch share improve this question Using self causes your class' setter for this variable to be called rather than changing the ivar directly. self.mainViewController aController is equivalent to self setMainViewController..
How to change the name of an iOS app? http://stackoverflow.com/questions/238980/how-to-change-the-name-of-an-ios-app name of the project since its nearly finished. But I'm not sure how to do this with Xcode trying the obvious of changing the application's name in the pinfo causes the signing process to go wrong I think... and my app won't launch giving me a Launcher error. I guess I could make a new project and copy paste everything over..
Objective-C categories in static library http://stackoverflow.com/questions/2567498/objective-c-categories-in-static-library a selector that is defined in the category. And their solution To resolve this issue the static library should pass the ObjC option to the linker. This flag causes the linker to load every object file in the library that defines an Objective C class or category. While this option will typically result in a larger executable..
How to tell if UIViewController's view is visible http://stackoverflow.com/questions/2777438/how-to-tell-if-uiviewcontrollers-view-is-visible question The view's window property is non nil if a view is currently visible so check the main view in the view controller EDIT Invoking the view method causes the view to load if it is not loaded which is unnecessary and may be undesirable. It would be better to check first to see if it is already loaded. I've added the..
How to filter NSFetchedResultsController (CoreData) with UISearchDisplayController/UISearchBar http://stackoverflow.com/questions/4471289/how-to-filter-nsfetchedresultscontroller-coredata-with-uisearchdisplaycontroll release NSError error nil if aFetchedResultsController performFetch error Replace this implementation with code to handle the error appropriately. abort causes the application to generate a crash log and terminate. You should not use this function in a shipping application although it may be useful during development...
How do I reset after a UIScrollView zoom? http://stackoverflow.com/questions/448285/how-do-i-reset-after-a-uiscrollview-zoom that you reset the transform on your view to be CGAffineTransformIdentity and then have your view manually redraw itself at the new size scale. However this causes a problem because UIScrollView doesn't appear to monitor the content view transform so on the next zoom operation it sets the transform of the content view to whatever..
When is layoutSubviews called? http://stackoverflow.com/questions/728372/when-is-layoutsubviews-called with the answer or any I could find on the net so I tried it in practice and here is what I got init does not cause layoutSubviews to be called duh addSubview causes layoutSubviews to be called on the view being added the view it ™s being added to target view and all the subviews of the target view setFrame intelligently calls.. setFrame intelligently calls layoutSubviews on the view having it ™s frame set only if the size parameter of the frame is different scrolling a UIScrollView causes layoutSubviews to be called on the scrollView and it ™s superview rotating a device only calls layoutSubview on the parent view the responding viewControllers primary..
Optimizing CLLocationManager/CoreLocation to retrieve data points faster on the iPhone http://stackoverflow.com/questions/1081219/optimizing-cllocationmanager-corelocation-to-retrieve-data-points-faster-on-the accuracyToSet MyCLController sharedInstance .locationManager.distanceFilter filterToSet This approach works and causes no errors. If you update the desiredAccuracy or distanceFilter in the main delegate loop void locationManager CLLocationManager..
How does the iOS app Display Recorder record the screen without using private API? http://stackoverflow.com/questions/11090184/how-does-the-ios-app-display-recorder-record-the-screen-without-using-private-ap the static analysis Apple runs how were they able to do this recording in an approved application Additionally the app causes a red bar to appear at the top of the screen while it records similar to the native iOS's phone call functionality. I've..
Add UIPickerView & a Button in Action sheet - How? http://stackoverflow.com/questions/1262574/add-uipickerview-a-button-in-action-sheet-how
CGImage/UIImage lazily loading on UI thread causes stutter http://stackoverflow.com/questions/1815476/cgimage-uiimage-lazily-loading-on-ui-thread-causes-stutter UIImage lazily loading on UI thread causes stutter My program displays a horizontal scrolling surface tiled with UIImageViews from left to right. Code runs on the.. loaded on my worker thread. So far so good. The issue is that my new force lazy load of image method is unreliable. It causes intermittent EXC_BAD_ACCESS. I have no idea what UIImage is actually doing behind the scenes. Perhaps it is decompressing..
Adding Core Data to existing iPhone project http://stackoverflow.com/questions/2032818/adding-core-data-to-existing-iphone-project URL storeUrl options nil error error Replace this implementation with code to handle the error appropriately. abort causes the application to generate a crash log and terminate. You should not use this function in a shipping application although..
What exactly must I do in viewDidUnload? http://stackoverflow.com/questions/2261972/what-exactly-must-i-do-in-viewdidunload controller I have to release that stuff only HERE but not in dealloc as well That's confusing. Also what if dealloc causes the view to be unloaded released Then again it will call viewDidUnload I do realize the difference that viewDidUnload is..
Objective-C - When to use 'self' http://stackoverflow.com/questions/2385980/objective-c-when-to-use-self is referring to the same instance variable. iphone objective c cocoa touch share improve this question Using self causes your class' setter for this variable to be called rather than changing the ivar directly. self.mainViewController aController..
How to change the name of an iOS app? http://stackoverflow.com/questions/238980/how-to-change-the-name-of-an-ios-app But I'm not sure how to do this with Xcode trying the obvious of changing the application's name in the pinfo causes the signing process to go wrong I think... and my app won't launch giving me a Launcher error. I guess I could make a new..
unrecognized selector sent to instance http://stackoverflow.com/questions/2455161/unrecognized-selector-sent-to-instance It looks like you're not memory managing the view controller properly and it is being deallocated at some point which causes the numberButtonClicked method to be sent to another object that is now occupying the memory that the view controller was..
Orientation in a UIView added to a UIWindow http://stackoverflow.com/questions/2508630/orientation-in-a-uiview-added-to-a-uiwindow directly. iphone uiview orientation uiwindow share improve this question You can read about some of the possible causes here Technical Q A QA1688 Why won't my UIViewController rotate with the device In your situation its probably the fact that..
Objective-C categories in static library http://stackoverflow.com/questions/2567498/objective-c-categories-in-static-library And their solution To resolve this issue the static library should pass the ObjC option to the linker. This flag causes the linker to load every object file in the library that defines an Objective C class or category. While this option will..
How to tell if UIViewController's view is visible http://stackoverflow.com/questions/2777438/how-to-tell-if-uiviewcontrollers-view-is-visible is non nil if a view is currently visible so check the main view in the view controller EDIT Invoking the view method causes the view to load if it is not loaded which is unnecessary and may be undesirable. It would be better to check first to see..
How to filter NSFetchedResultsController (CoreData) with UISearchDisplayController/UISearchBar http://stackoverflow.com/questions/4471289/how-to-filter-nsfetchedresultscontroller-coredata-with-uisearchdisplaycontroll performFetch error Replace this implementation with code to handle the error appropriately. abort causes the application to generate a crash log and terminate. You should not use this function in a shipping application although..
How do I reset after a UIScrollView zoom? http://stackoverflow.com/questions/448285/how-do-i-reset-after-a-uiscrollview-zoom to be CGAffineTransformIdentity and then have your view manually redraw itself at the new size scale. However this causes a problem because UIScrollView doesn't appear to monitor the content view transform so on the next zoom operation it sets..
UIView and initWithFrame and a NIB file. How can i get the NIB file loaded? http://stackoverflow.com/questions/5056219/uiview-and-initwithframe-and-a-nib-file-how-can-i-get-the-nib-file-loaded options nil self addSubview self.view return self void awakeFromNib super awakeFromNib commenters report the next line causes infinite recursion so removing it NSBundle mainBundle loadNibNamed @ MyView owner self options nil self addSubview self.view..
When is layoutSubviews called? http://stackoverflow.com/questions/728372/when-is-layoutsubviews-called net so I tried it in practice and here is what I got init does not cause layoutSubviews to be called duh addSubview causes layoutSubviews to be called on the view being added the view it ™s being added to target view and all the subviews of the.. on the view having it ™s frame set only if the size parameter of the frame is different scrolling a UIScrollView causes layoutSubviews to be called on the scrollView and it ™s superview rotating a device only calls layoutSubview on the parent..
http://stackoverflow.com/questions/7798891/detect-silent-mode-in-ios5 past to detect if the silent switch is enabled BOOL silenced #if TARGET_IPHONE_SIMULATOR return NO in simulator. Code causes crashes for some reason. return NO #endif CFStringRef state UInt32 propertySize sizeof CFStringRef AudioSessionInitialize..
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