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2014/10/15 ¤U¤È 10:08:10
iphone Programming Glossary: enabledHow to add a breakpoint to objc_exception_throw? http://stackoverflow.com/questions/1163981/how-to-add-a-breakpoint-to-objc-exception-throw location should be CoreFoundation . Now if you start debugging your application with breakpoints enabled it should break on the throw of these exceptions. You should then be able to see the chain of events..
UIScrollView horizontal paging like Mobile Safari tabs http://stackoverflow.com/questions/1220354/uiscrollview-horizontal-paging-like-mobile-safari-tabs mobile Safari does iphone cocoa touch share improve this question A UIScrollView with paging enabled will stop at multiples of its frame width or height . So the first step is to figure out how wide you..
Programmatically turn on bluetooth in the iphone sdk? http://stackoverflow.com/questions/1743610/programmatically-turn-on-bluetooth-in-the-iphone-sdk is the code BluetoothManager manager BluetoothManager sharedInstance manager setEnabled manager enabled I have built a utility to do this myself and it does work. Note if all you want to do is create a utility..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events once it was quit by the system . This we will abuse later. In my case I used VoIP backgrounding enabled in my plist. All the code here is done in your AppDelegate if the iOS device allows background execution..
Xcode 4: create IPA file instead of .xcarchive http://stackoverflow.com/questions/5265292/xcode-4-create-ipa-file-instead-of-xcarchive
iOS 5 Best Practice (Release/retain?) http://stackoverflow.com/questions/6308425/ios-5-best-practice-release-retain write apps using ARC Automatic Reference Counting and Xcode will write glue code to allow your ARC enabled apps to run on iOS 4 no modifications required. However certain things wont work and most noticeably..
How do I get a background location update every n minutes in my iOS application? http://stackoverflow.com/questions/6347503/how-do-i-get-a-background-location-update-every-n-minutes-in-my-ios-application backgroundTimeRemaining it does works just fine in case n is larger the location manager should be enabled and disabled again before there is no time remaining to avoid the background task being killed. This..
performSelector may cause a leak because its selector is unknown http://stackoverflow.com/questions/7017281/performselector-may-cause-a-leak-because-its-selector-is-unknown it handles return values that aren't assigned to local variables. There's no reason that with ARC enabled that it can't retain and release the object value that's returned from methodForSelector even though..
GCD, Threads, Program Flow and UI Updating http://stackoverflow.com/questions/7290931/gcd-threads-program-flow-and-ui-updating puzzle Button is ENABLED YES Called when button is pressed void solvePuzzle id sender solveButton.enabled NO solveButton.title @ Working . . . . I've tried using this as a Background thread but I can't get.. createTreeFromNode rootNode Need to wait here until createTreeFromNode is finished. solveButton.enabled YES if numSolutions 0 solveButton.title @ Not Solvable else solveButton.title @ Solve Puzzle Needs.. say wait in the comment is incorrect. See where I added NO. void solvePuzzle id sender solveButton.enabled NO solveButton.title @ Working . . . . I've tried using this as a Background thread but I can't get..
iCloud basics and code sample [closed] http://stackoverflow.com/questions/7795629/icloud-basics-and-code-sample users who do not use iCloud When I launch my app see code below I check if the user has iCloud enabled. If iCloud is enabled everything is fine. The app goes ahead and looks for text.txt in the cloud. If.. iCloud When I launch my app see code below I check if the user has iCloud enabled. If iCloud is enabled everything is fine. The app goes ahead and looks for text.txt in the cloud. If found it will load it.. simply create a new text.txt and will display that to the user. If the user does not have iCloud enabled nothing will happen. How will I make it possible that non iCloud users can still work with my text app..
How to add a breakpoint to objc_exception_throw? http://stackoverflow.com/questions/1163981/how-to-add-a-breakpoint-to-objc-exception-throw . The second should be NSException raise and its location should be CoreFoundation . Now if you start debugging your application with breakpoints enabled it should break on the throw of these exceptions. You should then be able to see the chain of events that led to the exception within the debugger. now in this..
UIScrollView horizontal paging like Mobile Safari tabs http://stackoverflow.com/questions/1220354/uiscrollview-horizontal-paging-like-mobile-safari-tabs a UIScrollView to show some content of the next view like mobile Safari does iphone cocoa touch share improve this question A UIScrollView with paging enabled will stop at multiples of its frame width or height . So the first step is to figure out how wide you want your pages to be. Make that the width of the UIScrollView..
Programmatically turn on bluetooth in the iphone sdk? http://stackoverflow.com/questions/1743610/programmatically-turn-on-bluetooth-in-the-iphone-sdk #import BluetoothManager.h To toggle the bluetooth here is the code BluetoothManager manager BluetoothManager sharedInstance manager setEnabled manager enabled I have built a utility to do this myself and it does work. Note if all you want to do is create a utility to toggle the bluetooth and exit without any UI create..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events features the app will be launched by iOS in background again once it was quit by the system . This we will abuse later. In my case I used VoIP backgrounding enabled in my plist. All the code here is done in your AppDelegate if the iOS device allows background execution this Handler will be called void backgroundHandler NSLog..
Xcode 4: create IPA file instead of .xcarchive http://stackoverflow.com/questions/5265292/xcode-4-create-ipa-file-instead-of-xcarchive
iOS 5 Best Practice (Release/retain?) http://stackoverflow.com/questions/6308425/ios-5-best-practice-release-retain share improve this question It's up to you. You can write apps using ARC Automatic Reference Counting and Xcode will write glue code to allow your ARC enabled apps to run on iOS 4 no modifications required. However certain things wont work and most noticeably many libraries you might wish to use will sometimes throw up..
How do I get a background location update every n minutes in my iOS application? http://stackoverflow.com/questions/6347503/how-do-i-get-a-background-location-update-every-n-minutes-in-my-ios-application In case n is smaller than UIApplication backgroundTimeRemaining it does works just fine in case n is larger the location manager should be enabled and disabled again before there is no time remaining to avoid the background task being killed. This does work since location is one of the three allowed types..
performSelector may cause a leak because its selector is unknown http://stackoverflow.com/questions/7017281/performselector-may-cause-a-leak-because-its-selector-is-unknown I've seen Clang go through a few iterations of how it handles return values that aren't assigned to local variables. There's no reason that with ARC enabled that it can't retain and release the object value that's returned from methodForSelector even though you don't want to use it. From the compiler's perspective it..
GCD, Threads, Program Flow and UI Updating http://stackoverflow.com/questions/7290931/gcd-threads-program-flow-and-ui-updating moves solution data. Then once it's finished calculating the puzzle Button is ENABLED YES Called when button is pressed void solvePuzzle id sender solveButton.enabled NO solveButton.title @ Working . . . . I've tried using this as a Background thread but I can't get the code to waitTilDone before continuing and changing the button.. com.gamesbychris.createTree 0 dispatch_sync queue ^ self createTreeFromNode rootNode Need to wait here until createTreeFromNode is finished. solveButton.enabled YES if numSolutions 0 solveButton.title @ Not Solvable else solveButton.title @ Solve Puzzle Needs to run in background so UI can be updated void createTreeFromNode.. to in the code above. Here's the code you had. Where you say wait in the comment is incorrect. See where I added NO. void solvePuzzle id sender solveButton.enabled NO solveButton.title @ Working . . . . I've tried using this as a Background thread but I can't get the code to waitTilDone before continuing and changing the button..
iCloud basics and code sample [closed] http://stackoverflow.com/questions/7795629/icloud-basics-and-code-sample to all devices. Works perfectly but Main problem What about users who do not use iCloud When I launch my app see code below I check if the user has iCloud enabled. If iCloud is enabled everything is fine. The app goes ahead and looks for text.txt in the cloud. If found it will load it and display it to the user. If text.txt.. perfectly but Main problem What about users who do not use iCloud When I launch my app see code below I check if the user has iCloud enabled. If iCloud is enabled everything is fine. The app goes ahead and looks for text.txt in the cloud. If found it will load it and display it to the user. If text.txt is not found in the.. it to the user. If text.txt is not found in the cloud it will simply create a new text.txt and will display that to the user. If the user does not have iCloud enabled nothing will happen. How will I make it possible that non iCloud users can still work with my text app Or do I simply ignore them Would I need to write separate..
How to add a breakpoint to objc_exception_throw? http://stackoverflow.com/questions/1163981/how-to-add-a-breakpoint-to-objc-exception-throw raise and its location should be CoreFoundation . Now if you start debugging your application with breakpoints enabled it should break on the throw of these exceptions. You should then be able to see the chain of events that led to the exception..
UIScrollView horizontal paging like Mobile Safari tabs http://stackoverflow.com/questions/1220354/uiscrollview-horizontal-paging-like-mobile-safari-tabs the next view like mobile Safari does iphone cocoa touch share improve this question A UIScrollView with paging enabled will stop at multiples of its frame width or height . So the first step is to figure out how wide you want your pages to..
Break on EXC_BAD_ACCESS in XCode? http://stackoverflow.com/questions/1622079/break-on-exc-bad-access-in-xcode getenv NSAutoreleaseFreedObjectCheckEnabled NSLog @ NSZombieEnabled NSAutoreleaseFreedObjectCheckEnabled enabled If you need help finding the exact line Do a Build and Debug CMD Y instead of a Build and Run CMD R . When the app crashes..
Programmatically turn on bluetooth in the iphone sdk? http://stackoverflow.com/questions/1743610/programmatically-turn-on-bluetooth-in-the-iphone-sdk the bluetooth here is the code BluetoothManager manager BluetoothManager sharedInstance manager setEnabled manager enabled I have built a utility to do this myself and it does work. Note if all you want to do is create a utility to toggle the..
http://stackoverflow.com/questions/3558252/ios-keychain-security to protect this certificates. e.g. is it possible to get full Keychain access on the iPhone if no ScreenLock is enabled or with an Jailbroken iPhone . Does anybody has some links about this iphone certificate ios keychain share improve this..
How can I find out if the iPhone user currently has a passcode set and encryption enabled? http://stackoverflow.com/questions/3806455/how-can-i-find-out-if-the-iphone-user-currently-has-a-passcode-set-and-encryptio can I find out if the iPhone user currently has a passcode set and encryption enabled I'm writing an iPhone application that requires its data to be encrypted. I've learned how to turn on encryption for files.. iOS 4.0 or better. What I've realized though that if the user has not chosen a passcode and has not specifically enabled data protection on the Settings General Passcade Lock screen then the data isn't actually protected at all. I'd like to.. a backup and restore on pre 4 iPhones and then exit the application if they do not have a passcode and data protection enabled. I can't figure out anyway to find out the state of these settings though. All of the APIs I've found such as protectedDataAvailable..
Is there a way to toggle bluetooth and/or wifi on and off programatically in iOS? http://stackoverflow.com/questions/4518406/is-there-a-way-to-toggle-bluetooth-and-or-wifi-on-and-off-programatically-in-ios afterDelay 0.1f #endif return YES #if TARGET_IPHONE_SIMULATOR #else void toggle id btCont BOOL currentState btCont enabled btCont setEnabled currentState btCont setPowered currentState exit EXIT_SUCCESS #endif You need to link against the Gamekit..
http://stackoverflow.com/questions/459833/which-open-source-licenses-are-compatible-with-the-apples-iphone-and-its-offici stores have a few incompatibilities which means that you do not have the rights to distribute LGPL code on DRM enabled AppStores or locked devices. It is best if you look for alternative implementations of the library under other laxer licenses..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events in background again once it was quit by the system . This we will abuse later. In my case I used VoIP backgrounding enabled in my plist. All the code here is done in your AppDelegate if the iOS device allows background execution this Handler will..
Xcode 4: create IPA file instead of .xcarchive http://stackoverflow.com/questions/5265292/xcode-4-create-ipa-file-instead-of-xcarchive
iOS 5 Best Practice (Release/retain?) http://stackoverflow.com/questions/6308425/ios-5-best-practice-release-retain up to you. You can write apps using ARC Automatic Reference Counting and Xcode will write glue code to allow your ARC enabled apps to run on iOS 4 no modifications required. However certain things wont work and most noticeably many libraries you..
How do I get a background location update every n minutes in my iOS application? http://stackoverflow.com/questions/6347503/how-do-i-get-a-background-location-update-every-n-minutes-in-my-ios-application than UIApplication backgroundTimeRemaining it does works just fine in case n is larger the location manager should be enabled and disabled again before there is no time remaining to avoid the background task being killed. This does work since location..
performSelector may cause a leak because its selector is unknown http://stackoverflow.com/questions/7017281/performselector-may-cause-a-leak-because-its-selector-is-unknown iterations of how it handles return values that aren't assigned to local variables. There's no reason that with ARC enabled that it can't retain and release the object value that's returned from methodForSelector even though you don't want to use..
GCD, Threads, Program Flow and UI Updating http://stackoverflow.com/questions/7290931/gcd-threads-program-flow-and-ui-updating calculating the puzzle Button is ENABLED YES Called when button is pressed void solvePuzzle id sender solveButton.enabled NO solveButton.title @ Working . . . . I've tried using this as a Background thread but I can't get the code to waitTilDone.. queue ^ self createTreeFromNode rootNode Need to wait here until createTreeFromNode is finished. solveButton.enabled YES if numSolutions 0 solveButton.title @ Not Solvable else solveButton.title @ Solve Puzzle Needs to run in background.. you had. Where you say wait in the comment is incorrect. See where I added NO. void solvePuzzle id sender solveButton.enabled NO solveButton.title @ Working . . . . I've tried using this as a Background thread but I can't get the code to waitTilDone..
iCloud basics and code sample [closed] http://stackoverflow.com/questions/7795629/icloud-basics-and-code-sample Main problem What about users who do not use iCloud When I launch my app see code below I check if the user has iCloud enabled. If iCloud is enabled everything is fine. The app goes ahead and looks for text.txt in the cloud. If found it will load.. users who do not use iCloud When I launch my app see code below I check if the user has iCloud enabled. If iCloud is enabled everything is fine. The app goes ahead and looks for text.txt in the cloud. If found it will load it and display it to the.. in the cloud it will simply create a new text.txt and will display that to the user. If the user does not have iCloud enabled nothing will happen. How will I make it possible that non iCloud users can still work with my text app Or do I simply ignore..
http://stackoverflow.com/questions/7798891/detect-silent-mode-in-ios5 Silent mode in iOS5 I have used this method in the 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..
Implementing a Countdown Timer in Objective-c? http://stackoverflow.com/questions/10663184/implementing-a-countdown-timer-in-objective-c both minutes and seconds. iphone objective c ios nstimer share improve this question You can do it like this ARC Enabled @interface ViewController UILabel progress NSTimer timer int currMinute int currSeconds @end @implementation ViewController..
Maximum speed from IOS/iPad/iPhone http://stackoverflow.com/questions/11219240/maximum-speed-from-ios-ipad-iphone and this value was converted to radians for sin and cos . This code was removed too. But lookup tables did the job. Enabled thumb optimizations . Some blog posts recommend exactly opposite but this is because thumb makes things usually slower on..
http://stackoverflow.com/questions/2218613/touchesmoved-with-button p3 setHighlighted NO And finally in Interface Builder connect your button to 'aButton' and turn off User Interaction Enabled for your button. This is important because it allow touchesMoved to handle it. I have adjusted the code above to check the..
Draw a line over UIViewController http://stackoverflow.com/questions/3003458/draw-a-line-over-uiviewcontroller to the views that are located under this one... EDIT Don't mess with the hitTest. Just uncheck the User Interaction Enabled in the XIB... EDIT Code sample @interface TransparentDrawingView UIView CGPoint fromPoint CGPoint toPoint void drawLineFrom..
Augmented Reality for IPhone [closed] http://stackoverflow.com/questions/4622786/augmented-reality-for-iphone one on github. Theres also NyARToolkit . Or this answer on SO. iOS 4 Sensor Programming Augmented Reality and Location Enabled iPhone and iPad Apps Here is a PDF iPhone Augmented Reality Games Here is a PDF Augmented Reality for Travel on iPhone Here..
How do I debug with NSLog(@“Inside of the iPhone Simulator”)? http://stackoverflow.com/questions/558568/how-do-i-debug-with-nsloginside-of-the-iphone-simulator You can selectively enable and disable them. If you learn enough from one but its spew is interfering just uncheck its Enabled box. All the output is generated on your Mac never on the iPhone so you don't have to download and parse through logs after..
Choosing between the two - Interface Builder OR creating via code http://stackoverflow.com/questions/6385516/choosing-between-the-two-interface-builder-or-creating-via-code to receive touch events because it has some gesture recognizers added to it. You need to set the User Interaction Enabled property to TRUE. It can be better to do this in code because the requirement is more visible and you can leave appropriate..
Using Non-ARC Code in an ARC-Enabled Project - Adding Facebook http://stackoverflow.com/questions/8701780/using-non-arc-code-in-an-arc-enabled-project-adding-facebook Non ARC Code in an ARC Enabled Project Adding Facebook When i created my project i made it to support ARC so my project will support iOS 4.3 and above...
Hide keyboard when user touches uiview http://stackoverflow.com/questions/963571/hide-keyboard-when-user-touches-uiview
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