2014/10/15 下午 10:15:06
iphone Programming Glossary: triedHow to make a UITextField move up when keyboard is present http://stackoverflow.com/questions/1126726/how-to-make-a-uitextfield-move-up-when-keyboard-is-present up Automatically jump by scrolling up or shortening I know that I need a UIScrollView . I've tried changing the class of my UIView to a UIScrollView but I'm still unable to scroll the textboxes up or..
Lazy load images in UITableView http://stackoverflow.com/questions/1130089/lazy-load-images-in-uitableview want to do a lazy load of images so the UI does not freeze up while the images are being loaded. I tried getting the images in separate threads but I have to load each image every time a cell becomes visible..
http://stackoverflow.com/questions/1388467/reading-epub-format there any framework available to develop this I have no idea about how to read this file format. I tried to parse a sample file with .epub extension using NSXML Parser but that fails. iphone epub share..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone encrypted data. The method should then return an NSString created from the encrypted data. I've tried the technique detailed in the first comment on this post but I've had no luck so far. Apple's CryptoExercise..
Symbolicating iPhone App Crash Reports http://stackoverflow.com/questions/1460892/symbolicating-iphone-app-crash-reports of these files together inside a single directory that is indexed by spotlight. What now I have tried invoking symbolicatecrash crashreport.crash myApp.app.dSYM and it just outputs the same text that is..
How to customize the callout bubble for MKAnnotationView? http://stackoverflow.com/questions/1565828/how-to-customize-the-callout-bubble-for-mkannotationview part of my annotation views delected it without having the default callout bubble view show up. I tried going down a different path and just handling all touch events myself in the map and I can't seem to..
http://stackoverflow.com/questions/3339722/check-iphone-ios-version iPhone iOS Version I want to check if the iOS version of the device is greater then the 3.1.3 I tried things like UIDevice currentDevice .systemVersion floatValue but does not work I just want a if version..
Proper way to exit iPhone application? http://stackoverflow.com/questions/355168/proper-way-to-exit-iphone-application the application iphone objective c cocoa touch ipad share improve this question Have you tried exit 0 Alternatively NSThread mainThread exit although I have not tried that it seems like the more..
Can I embed a custom font in an iPhone application? http://stackoverflow.com/questions/360751/can-i-embed-a-custom-font-in-an-iphone-application downloaded from here and added it to my Resources directory and to the project. I then tried this code UIFont font UIFont fontWithName @ Harrowprint size 20 which resulted in an exception being..
display image from URL retrieved from ALAsset in iPhone http://stackoverflow.com/questions/3837115/display-image-from-url-retrieved-from-alasset-in-iphone want to display the actual image in an image view but I am unable to figure out how to do this. I tried using the URLs field in the ALAsset object but was unsuccessful. Anybody knows how this can be done..
How to filter NSFetchedResultsController (CoreData) with UISearchDisplayController/UISearchBar http://stackoverflow.com/questions/4471289/how-to-filter-nsfetchedresultscontroller-coredata-with-uisearchdisplaycontroll this on one of my projects your question and the other wrong answer hinted at what to do . I tried Sergio's answer but had exception issues when actually running on a device. Yes you create two fetch..
Lock-down iPhone/iPod/iPad so it can only run one app http://stackoverflow.com/questions/5011774/lock-down-iphone-ipod-ipad-so-it-can-only-run-one-app on your mac webserver. It's possible that you can load the config using IPCU too but I have not tried this. This config file will not load in the iPhone Configuration Utility as it uses keys that IPCU doesn't..
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 my iOS application. I'm using iOS 4.3 and the solution should work for non jailbroken iPhones. I tried considered following options CLLocationManager startUpdatingLocation startMonitoringSignificantLocationChanges..
Is it possible to target older iOS versions when using Xcode 4.2 and iOS 5 SDK? http://stackoverflow.com/questions/7760946/is-it-possible-to-target-older-ios-versions-when-using-xcode-4-2-and-ios-5-sdk and up to date. I have quit and restarted xcode I have cleaned the build multiple times. I have tried adding armv6 in the archtecture build settings but nothing will allow me to build and run my app on.. the setting Required device capabilities note it required armv7 btw I figured this out when I tried to manually add the app via the organizer and it reported Can't install application The Info.plist for..
iPhone - strange error when testing on simulator http://stackoverflow.com/questions/788277/iphone-strange-error-when-testing-on-simulator of this process was already running or is hung in the debugger.Program received signal �SIGABRT I tried removing the app from the simulator doing a clean build but I still get this error when I try to run..
iPhone Data Usage Tracking/Monitoring http://stackoverflow.com/questions/7946699/iphone-data-usage-tracking-monitoring searched over this topic but found very few details which were helpful. With these details I've tried to cook some code as follows. Note Please compare the details shared in this post with other posts before.. in the implementation or understanding. Need someone to help me out. Edit Instead of AF_LINK I tried AF_INET sockaddr_in instead of sockaddr_dl . This crashes the application. iphone ios sockets share..
Having trouble adding objects to NSMutableArray in Objective C http://stackoverflow.com/questions/851926/having-trouble-adding-objects-to-nsmutablearray-in-objective-c something simple. I am trying to add an NSNumber object to an NSMutableArray instance variable. I tried adding NSNumber card to NSMutableArray viewedCardsArray however without breaking it does not get added..
How to make a UITextField move up when keyboard is present http://stackoverflow.com/questions/1126726/how-to-make-a-uitextfield-move-up-when-keyboard-is-present to see the other text fields once the keyboard is brought up Automatically jump by scrolling up or shortening I know that I need a UIScrollView . I've tried changing the class of my UIView to a UIScrollView but I'm still unable to scroll the textboxes up or down. Do I need both a UIView and a UIScrollView Does one go..
Lazy load images in UITableView http://stackoverflow.com/questions/1130089/lazy-load-images-in-uitableview a label in the cells where I get the images from URLs. I want to do a lazy load of images so the UI does not freeze up while the images are being loaded. I tried getting the images in separate threads but I have to load each image every time a cell becomes visible again Otherwise reuse of cells shows old images . Can someone..
http://stackoverflow.com/questions/1388467/reading-epub-format to develop an iPhone application to read ePub files. Is there any framework available to develop this I have no idea about how to read this file format. I tried to parse a sample file with .epub extension using NSXML Parser but that fails. iphone epub share improve this question The EPUB format brings together a bunch..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone way that can be reversed if the passcode is supplied with the encrypted data. The method should then return an NSString created from the encrypted data. I've tried the technique detailed in the first comment on this post but I've had no luck so far. Apple's CryptoExercise certainly has something but I can't make sense of it.....
Symbolicating iPhone App Crash Reports http://stackoverflow.com/questions/1460892/symbolicating-iphone-app-crash-reports dSYM file that was generated as part of the build. I have all of these files together inside a single directory that is indexed by spotlight. What now I have tried invoking symbolicatecrash crashreport.crash myApp.app.dSYM and it just outputs the same text that is in the crash report to start with not symbolicated. Am I doing..
How to customize the callout bubble for MKAnnotationView? http://stackoverflow.com/questions/1565828/how-to-customize-the-callout-bubble-for-mkannotationview point on the map selected it or touched a point that is not part of my annotation views delected it without having the default callout bubble view show up. I tried going down a different path and just handling all touch events myself in the map and I can't seem to get this working. I read other posts related to catching touch..
http://stackoverflow.com/questions/3339722/check-iphone-ios-version iPhone iOS Version I want to check if the iOS version of the device is greater then the 3.1.3 I tried things like UIDevice currentDevice .systemVersion floatValue but does not work I just want a if version 3.1.3 How can I do this iphone version ios share improve..
Proper way to exit iPhone application? http://stackoverflow.com/questions/355168/proper-way-to-exit-iphone-application
Can I embed a custom font in an iPhone application? http://stackoverflow.com/questions/360751/can-i-embed-a-custom-font-in-an-iphone-application failed UIFont fontWithName size experiment I downloaded Harrowprint.tff downloaded from here and added it to my Resources directory and to the project. I then tried this code UIFont font UIFont fontWithName @ Harrowprint size 20 which resulted in an exception being thrown. Looking at the TTF file in Finder confirmed that the..
display image from URL retrieved from ALAsset in iPhone http://stackoverflow.com/questions/3837115/display-image-from-url-retrieved-from-alasset-in-iphone So far I am able to access the thumbnail and display it. I want to display the actual image in an image view but I am unable to figure out how to do this. I tried using the URLs field in the ALAsset object but was unsuccessful. Anybody knows how this can be done Here's some code where I was able to access the thumbnail and..
How to filter NSFetchedResultsController (CoreData) with UISearchDisplayController/UISearchBar http://stackoverflow.com/questions/4471289/how-to-filter-nsfetchedresultscontroller-coredata-with-uisearchdisplaycontroll share improve this question I actually just implemented this on one of my projects your question and the other wrong answer hinted at what to do . I tried Sergio's answer but had exception issues when actually running on a device. Yes you create two fetch results controllers one for the normal display and another..
Lock-down iPhone/iPod/iPad so it can only run one app http://stackoverflow.com/questions/5011774/lock-down-iphone-ipod-ipad-so-it-can-only-run-one-app space you can just use dropbox public folder URLs or switch on your mac webserver. It's possible that you can load the config using IPCU too but I have not tried this. This config file will not load in the iPhone Configuration Utility as it uses keys that IPCU doesn't know about. You can combine this with whatever other..
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 a way to get a background location update every n minutes in my iOS application. I'm using iOS 4.3 and the solution should work for non jailbroken iPhones. I tried considered following options CLLocationManager startUpdatingLocation startMonitoringSignificantLocationChanges This works in the background as expected based on..
Is it possible to target older iOS versions when using Xcode 4.2 and iOS 5 SDK? http://stackoverflow.com/questions/7760946/is-it-possible-to-target-older-ios-versions-when-using-xcode-4-2-and-ios-5-sdk 3.0 or higher. I have all my provisioning profiles installed and up to date. I have quit and restarted xcode I have cleaned the build multiple times. I have tried adding armv6 in the archtecture build settings but nothing will allow me to build and run my app on my old phone with ios 4.2.1. My question is is it possible to.. Target to iOS 4.2. 4 Open the projects Info.plist remove the setting Required device capabilities note it required armv7 btw I figured this out when I tried to manually add the app via the organizer and it reported Can't install application The Info.plist for application at Users ... TestsDebug.app specifies device..
iPhone - strange error when testing on simulator http://stackoverflow.com/questions/788277/iphone-strange-error-when-testing-on-simulator error code. This generally means that another instance of this process was already running or is hung in the debugger.Program received signal �SIGABRT I tried removing the app from the simulator doing a clean build but I still get this error when I try to run the app. What should I do to be able to run the app on my simulator..
iPhone Data Usage Tracking/Monitoring http://stackoverflow.com/questions/7946699/iphone-data-usage-tracking-monitoring Data Usage Tracking Monitoring I've searched over this topic but found very few details which were helpful. With these details I've tried to cook some code as follows. Note Please compare the details shared in this post with other posts before marking this as DUPLICATE and not just by the subject... get value added to ifi_obytes and ifi_ibytes . May be I'm wrong in the implementation or understanding. Need someone to help me out. Edit Instead of AF_LINK I tried AF_INET sockaddr_in instead of sockaddr_dl . This crashes the application. iphone ios sockets share improve this question The thing is that pdp_ip0 is one..
Having trouble adding objects to NSMutableArray in Objective C http://stackoverflow.com/questions/851926/having-trouble-adding-objects-to-nsmutablearray-in-objective-c C I am using the iPhone SDK and have an issue doing something simple. I am trying to add an NSNumber object to an NSMutableArray instance variable. I tried adding NSNumber card to NSMutableArray viewedCardsArray however without breaking it does not get added to the array. Here is the code. Inside the header file..
How to make a UITextField move up when keyboard is present http://stackoverflow.com/questions/1126726/how-to-make-a-uitextfield-move-up-when-keyboard-is-present the keyboard is brought up Automatically jump by scrolling up or shortening I know that I need a UIScrollView . I've tried changing the class of my UIView to a UIScrollView but I'm still unable to scroll the textboxes up or down. Do I need both..
Lazy load images in UITableView http://stackoverflow.com/questions/1130089/lazy-load-images-in-uitableview images from URLs. I want to do a lazy load of images so the UI does not freeze up while the images are being loaded. I tried getting the images in separate threads but I have to load each image every time a cell becomes visible again Otherwise reuse..
http://stackoverflow.com/questions/1388467/reading-epub-format read ePub files. Is there any framework available to develop this I have no idea about how to read this file format. I tried to parse a sample file with .epub extension using NSXML Parser but that fails. iphone epub share improve this question..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone is supplied with the encrypted data. The method should then return an NSString created from the encrypted data. I've tried the technique detailed in the first comment on this post but I've had no luck so far. Apple's CryptoExercise certainly has..
Symbolicating iPhone App Crash Reports http://stackoverflow.com/questions/1460892/symbolicating-iphone-app-crash-reports the build. I have all of these files together inside a single directory that is indexed by spotlight. What now I have tried invoking symbolicatecrash crashreport.crash myApp.app.dSYM and it just outputs the same text that is in the crash report..
How to customize the callout bubble for MKAnnotationView? http://stackoverflow.com/questions/1565828/how-to-customize-the-callout-bubble-for-mkannotationview a point that is not part of my annotation views delected it without having the default callout bubble view show up. I tried going down a different path and just handling all touch events myself in the map and I can't seem to get this working. I..
http://stackoverflow.com/questions/3339722/check-iphone-ios-version iPhone iOS Version I want to check if the iOS version of the device is greater then the 3.1.3 I tried things like UIDevice currentDevice .systemVersion floatValue but does not work I just want a if version 3.1.3 How can I..
Proper way to exit iPhone application? http://stackoverflow.com/questions/355168/proper-way-to-exit-iphone-application to call to terminate the application iphone objective c cocoa touch ipad share improve this question Have you tried exit 0 Alternatively NSThread mainThread exit although I have not tried that it seems like the more appropriate solution...
Can I embed a custom font in an iPhone application? http://stackoverflow.com/questions/360751/can-i-embed-a-custom-font-in-an-iphone-application I downloaded Harrowprint.tff downloaded from here and added it to my Resources directory and to the project. I then tried this code UIFont font UIFont fontWithName @ Harrowprint size 20 which resulted in an exception being thrown. Looking at..
display image from URL retrieved from ALAsset in iPhone http://stackoverflow.com/questions/3837115/display-image-from-url-retrieved-from-alasset-in-iphone and display it. I want to display the actual image in an image view but I am unable to figure out how to do this. I tried using the URLs field in the ALAsset object but was unsuccessful. Anybody knows how this can be done Here's some code where..
How to filter NSFetchedResultsController (CoreData) with UISearchDisplayController/UISearchBar http://stackoverflow.com/questions/4471289/how-to-filter-nsfetchedresultscontroller-coredata-with-uisearchdisplaycontroll actually just implemented this on one of my projects your question and the other wrong answer hinted at what to do . I tried Sergio's answer but had exception issues when actually running on a device. Yes you create two fetch results controllers..
Lock-down iPhone/iPod/iPad so it can only run one app http://stackoverflow.com/questions/5011774/lock-down-iphone-ipod-ipad-so-it-can-only-run-one-app folder URLs or switch on your mac webserver. It's possible that you can load the config using IPCU too but I have not tried this. This config file will not load in the iPhone Configuration Utility as it uses keys that IPCU doesn't know about. 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 every n minutes in my iOS application. I'm using iOS 4.3 and the solution should work for non jailbroken iPhones. I tried considered following options CLLocationManager startUpdatingLocation startMonitoringSignificantLocationChanges This works..
Is it possible to target older iOS versions when using Xcode 4.2 and iOS 5 SDK? http://stackoverflow.com/questions/7760946/is-it-possible-to-target-older-ios-versions-when-using-xcode-4-2-and-ios-5-sdk profiles installed and up to date. I have quit and restarted xcode I have cleaned the build multiple times. I have tried adding armv6 in the archtecture build settings but nothing will allow me to build and run my app on my old phone with ios.. Info.plist remove the setting Required device capabilities note it required armv7 btw I figured this out when I tried to manually add the app via the organizer and it reported Can't install application The Info.plist for application at Users..
iPhone - strange error when testing on simulator http://stackoverflow.com/questions/788277/iphone-strange-error-when-testing-on-simulator that another instance of this process was already running or is hung in the debugger.Program received signal �SIGABRT I tried removing the app from the simulator doing a clean build but I still get this error when I try to run the app. What should..
iPhone Data Usage Tracking/Monitoring http://stackoverflow.com/questions/7946699/iphone-data-usage-tracking-monitoring Monitoring I've searched over this topic but found very few details which were helpful. With these details I've tried to cook some code as follows. Note Please compare the details shared in this post with other posts before marking this as.. . May be I'm wrong in the implementation or understanding. Need someone to help me out. Edit Instead of AF_LINK I tried AF_INET sockaddr_in instead of sockaddr_dl . This crashes the application. iphone ios sockets share improve this question..
Having trouble adding objects to NSMutableArray in Objective C http://stackoverflow.com/questions/851926/having-trouble-adding-objects-to-nsmutablearray-in-objective-c have an issue doing something simple. I am trying to add an NSNumber object to an NSMutableArray instance variable. I tried adding NSNumber card to NSMutableArray viewedCardsArray however without breaking it does not get added to the array. Here..
http://stackoverflow.com/questions/10262733/ios-app-with-static-lib-crashes-only-on-launch-of-archive-build-loaded-ad-hoc-c their devices The Crash reports point to some code in static library but the key lines are not getting symbolicated. Tried Atos no luck. The key point is that I have 7 devices I have tested the app on in every mode I can think of in particular..
iPhone 5 splashscreen not displaying correctly - Phonegap http://stackoverflow.com/questions/12450603/iphone-5-splashscreen-not-displaying-correctly-phonegap just might not display correct one after this switcheroo. Has anyone else encountered and or solved this UPDATE Tried removing and adding all splash images again but to no avail. I tried removing the smaller images the 4 and its non retina.. request hoepfully to be incorporated into Cordova 2.2.0 https github.com apache incubator cordova ios pull 50 EDIT Tried T123's solution and it's working for me EDIT2 Brion's fix was incorporated in Cordova 2.2.0 which has now been released..
iCloud NSUbiquitousKeyValueStore initial sync/access delay - how to handle? http://stackoverflow.com/questions/12539266/icloud-nsubiquitouskeyvaluestore-initial-sync-access-delay-how-to-handle still persists in iCloud . Waited several minutes just in case then installed and launched the app from inside Xcode. Tried to read a settings key using NSUbiquitousKeyValueStore defaultStore dataForKey @ mykeyname sometimes it's ok but sometimes..
Iphone Application:-My Application Crash http://stackoverflow.com/questions/13969820/iphone-application-my-application-crash reuseIdentifier CellIdentifier autorelease my application is crashing every time with message Tried to obtain the web lock from a thread other than the main thread or the web thread. This may be a result of calling to UIKit..
http://stackoverflow.com/questions/1685956/uiscrollview-touchesbegan that scrollViewWillBeginDragging method but it only gets called on touchMoved. I want it to get called on touchBegan. Tried touchesBegan withEvent but it doesn't receive any touch. Anyone has a clue iphone uiscrollview share improve this question..
Does NSURLConnection take advantage of NSURLCache? http://stackoverflow.com/questions/1870004/does-nsurlconnection-take-advantage-of-nsurlcache data Does NSURLConnection not do this Or is there some way to get the framework to use the cache seamlessly UPDATE Tried the following without success Setting the request cache policy to NSURLRequestReturnCacheDataElseLoad instead of NSURLRequestUseProtocolCachePolicy..
How to swizzle a class method on iOS? http://stackoverflow.com/questions/3267506/how-to-swizzle-a-class-method-on-ios on iOS Method swizzling works great for instance methods. Now I need to swizzle a class method. Any idea how to do it Tried this but it doesn't work void SwizzleClassMethod Class c SEL orig SEL new Method origMethod class_getClassMethod c orig..
Playing many different videos on iphone using AVPlayer http://stackoverflow.com/questions/6258573/playing-many-different-videos-on-iphone-using-avplayer self.moviePlayer currentTimeInSeconds self.moviePlayer stopMovie isMain isMain self viewSelect elapsedTime EDIT Tried using different AVPlayerLayers for each video file same situation works in the simulator not on the iPad. EDIT 2 I ran instruments..
MKAnnotationView - Lock custom annotation view to pin on location updates http://stackoverflow.com/questions/6392931/mkannotationview-lock-custom-annotation-view-to-pin-on-location-updates phone and play around with it and see if you can get that darned callout annotation to move with the pin Update #3 Tried making setAnnotation a public method of the tutorial's CalloutMapAnnotationView and calling that directly. Didn't have any..
http://stackoverflow.com/questions/7235991/create-image-from-rgb-data but can't find out how to do it. Can anyone help I think i might need to use CGImageCreate but just don't get it. Tried looking at the class reference and am feeling quite stuck. All I want is a 10x10 greyscale image generated from some calculations..
GCD, Threads, Program Flow and UI Updating http://stackoverflow.com/questions/7290931/gcd-threads-program-flow-and-ui-updating @ Solve Puzzle Needs to run in background so UI can be updated void createTreeFromNode TreeNode node Tried using GCD dispatch_queue_t main_queue dispatch_get_main_queue ...Create Tree Node and find Children Code... if solutionFound..
iPhone: Failed to launch simulated application: Unknown error http://stackoverflow.com/questions/779115/iphone-failed-to-launch-simulated-application-unknown-error but after combing through the config twice we can't spot the problem. Vanna I'd like to buy a clue for 200 please. Tried XCode menu Clear cache Tried clean all targets Tried rm rf ~ Library Application Support iPhone Simulator iphone ios simulator.. the config twice we can't spot the problem. Vanna I'd like to buy a clue for 200 please. Tried XCode menu Clear cache Tried clean all targets Tried rm rf ~ Library Application Support iPhone Simulator iphone ios simulator share improve this.. spot the problem. Vanna I'd like to buy a clue for 200 please. Tried XCode menu Clear cache Tried clean all targets Tried rm rf ~ Library Application Support iPhone Simulator iphone ios simulator share improve this question Changing the..
http://stackoverflow.com/questions/9679754/tried-to-obtain-the-web-lock-from-a-thread-other-than-the-main-thread-or-the-web to obtain the web lock from a thread other than the main thread or the web thread. Crashing now bool _WebTryThreadLock.. lock from a thread other than the main thread or the web thread. Crashing now bool _WebTryThreadLock bool 0x8053ce0 Tried to obtain the web lock from a thread other than the main thread or the web thread. This may be a result of calling to UIKit..
can Jailbroken iphone used for development http://stackoverflow.com/questions/995262/can-jailbroken-iphone-used-for-development devices as they behave exactly like stock standard firmwares.. Have you Added the UDID to the provisioning profile Tried removing and adding the provisioning profile in XCode organizer Rebooting the phone then trying to build an app targeting..
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