2014/10/15 下午 10:04:33
iphone Programming Glossary: beHow to check for an active Internet Connection on iPhone SDK? http://stackoverflow.com/questions/1083701/how-to-check-for-an-active-internet-connection-on-iphone-sdk I came up with a way to do this using an NSURL . The way I did it seems a bit unreliable because even Google could one day be down and relying on a 3rd party seems bad and while I could check.. do this using an NSURL . The way I did it seems a bit unreliable because even Google could one day be down and relying on a 3rd party seems bad and while I could check to see for a response from some other.. I have done bad Not to mention stringWithContentsOfURL is deprecated in 3.0 And if so what is a better way to accomplish this iphone objective c ios cocoa touch reachability share improve this question..
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 With the iPhone SDK I have a UIView with UITextFields that brings up a keyboard. I need it to be able to Allow scrolling of the contents of the UIScrollView to see the other text fields once the keyboard.. set the content size of the UIScrollView to the frame size of the UIView . Then what needs to be implemented in order to automatically scroll to the active text field Ideally as much of the setup of.. scroll to the active text field Ideally as much of the setup of the components as possible will be done in Interface Builder. I'd like to only write code for what needs it. Note the UIView or UIScrollView..
How to develop or migrate apps for iPhone 5 screen resolution? http://stackoverflow.com/questions/12395200/how-to-develop-or-migrate-apps-for-iphone-5-screen-resolution applicationFrame but then you need to consider status bar height if it's present as there seems to be no specific API for that. Example CGRect screenBounds UIScreen mainScreen bounds if screenBounds.size.height..
Symbolicating iPhone App Crash Reports http://stackoverflow.com/questions/1460892/symbolicating-iphone-app-crash-reports is in the crash report to start with not symbolicated. Am I doing something wrong Any help would be greatly appreciated thanks. iphone crash reports symbolicate share improve this question Steps.. command atos arch armv7 o YOURAPP.app YOURAPP MEMORY_LOCATION_OF_CRASH. The memory location should be the one at which the app crashed as per the report. Ex atos arch armv7 o 'app name.app' 'app name' 0x0003b508..
How do I associate file types with an iPhone application? http://stackoverflow.com/questions/2774343/how-do-i-associate-file-types-with-an-iphone-application your iPhone app with file types. In this informative question I learned that apps could be associated with custom URL protocols. That was almost one year ago and since then Apple introduced 'Document.. or Mail implemented this system for choosing associated applications or will they do nothing as before iphone ios cocoa touch ipad share improve this question File type handling is new with iPhone.. string string org.gnu.gnu zip archive string array dict array Two images are provided that will be used as icons for the supported types in Mail and other applications capable of showing documents. The..
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 embed a custom font in an iPhone application I would like to have an app include a custom font for rendering.. a custom font for rendering text load it and then use it with standard UIKit elements like UILabel. Is this possible I found these links http discussions.apple.com thread.jspa messageID 8304744 http.. 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 font name was Harrowprint. EDIT there..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c cocoa delegates share improve this question An Objective C delegate is just an object that has been assigned as a delegate of another. There's no special process for creating them you simply define.. delegates that use a formal protocol you must declare your delegate to implement that protocol see below. For example suppose you have an NSWindow. If you'd like to implement its delegate's windowDidMove.. are two basic approaches discussed in the Apple Docs on protocols 1 An Informal Protocol This can be done as NSWindow does in a category on NSObject. For example continuing the example above this is paraphrased..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now property is deprecated in iOS 5 and above. No alternative method or property appears to be available or forthcoming. Many of our existing apps are tightly dependent on this property for uniquely.. and write it to the defaults database using the NSUserDefaults class. However this value won't be the same if a user uninstalls and re installs the app. iphone ios ipad share improve this question.. user uninstalls and re installs the app you will get a new one each time. But you might want it to be not unique i. e. it should stay the same when the user uninstalls and re installs the app. This requires..
How to detect iPhone 5 (widescreen devices)? http://stackoverflow.com/questions/12446990/how-to-detect-iphone-5-widescreen-devices lot of time. iOS 6 also offers new features about this but this is still under NDA at the moment. Be sure to read the API changelog on Apple Developer website if you can access to it. Edit As iOS 6 is.. by H2CO3. So from now on you can use it in standard if else statements if IS_IPHONE_5 else Edit Better detection As stated by some people this does only detect a widescreen not an actual iPhone 5. Next..
http://stackoverflow.com/questions/18736954/missing-recommended-icon-file-the-bundle-does-not-contain-an-app-icon-for-iph app binary into the App Store . I hope now you can submit your app without any icon issue. NOTE Be careful to provide all the icons you need. Otherwise your app will not pass Apple validation. If you..
Adding view on StatusBar in iPhone http://stackoverflow.com/questions/2833724/adding-view-on-statusbar-in-iphone overlayWindow ACStatusBarOverlayWindow alloc initWithFrame CGRectZero overlayWindow.hidden NO Be aware of messing with the window key status by using void makeKeyAndVisible or similar. If you make..
http://stackoverflow.com/questions/37464/iphone-app-minus-app-store Helper available from the App Store. For further details on this method see Craig Hockenberry's Beta testing on iPhone 2.0 article Jailbroken iPhone For jailbroken iPhones you can use the following method.. to be installed first. Replace jasoniphone.local with the hostname of the target device. Be sure to set your own password on both the mobile and root users after installing SSH. To manually compile..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events the system terminates our process app endBackgroundTask bgTask bgTask UIBackgroundTaskInvalid Be very spare with CPU Time here and your app runs longer But one thing is for sure your app will be terminated.. the long running task again within the expiration handler. This leads into endless execution too. Be aware to terminate the task if your application enters foreground again. And terminate the task if you..
What is the best way to deal with the NSDateFormatter locale “feature”? http://stackoverflow.com/questions/6613110/what-is-the-best-way-to-deal-with-the-nsdateformatter-locale-feature return singleton instances with certain configurations something like sharedRFC3339DateFormatter . Be aware however that NSDateFormatter is not thread safe and you have to use locks or @synchronized blocks..
How to check for an active Internet Connection on iPhone SDK? http://stackoverflow.com/questions/1083701/how-to-check-for-an-active-internet-connection-on-iphone-sdk an Internet connection on the iPhone using the Cocoa Touch libraries. I came up with a way to do this using an NSURL . The way I did it seems a bit unreliable because even Google could one day be down and relying on a 3rd party seems bad and while I could check to see for a response from some other websites if Google didn't.. using the Cocoa Touch libraries. I came up with a way to do this using an NSURL . The way I did it seems a bit unreliable because even Google could one day be down and relying on a 3rd party seems bad and while I could check to see for a response from some other websites if Google didn't respond it does seem wasteful.. @ http www.google.com return URLString NULL YES NO Is what I have done bad Not to mention stringWithContentsOfURL is deprecated in 3.0 And if so what is a better way to accomplish this iphone objective c ios cocoa touch reachability share improve this question METHOD 1 Use a simple ARC and GCD compatible class to..
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 make a UITextField move up when keyboard is present With the iPhone SDK I have a UIView with UITextFields that brings up a keyboard. I need it to be able to Allow scrolling of the contents of the UIScrollView to see the other text fields once the keyboard is brought up Automatically jump by scrolling up or shortening.. inside of a UIScrollView and the trick is to programatically set the content size of the UIScrollView to the frame size of the UIView . Then what needs to be implemented in order to automatically scroll to the active text field Ideally as much of the setup of the components as possible will be done in Interface Builder... . Then what needs to be implemented in order to automatically scroll to the active text field Ideally as much of the setup of the components as possible will be done in Interface Builder. I'd like to only write code for what needs it. Note the UIView or UIScrollView that I'm working with is brought up by a tabbar UITabBar..
How to develop or migrate apps for iPhone 5 screen resolution? http://stackoverflow.com/questions/12395200/how-to-develop-or-migrate-apps-for-iphone-5-screen-resolution you have to check height of UIScreen mainScreen bounds or applicationFrame but then you need to consider status bar height if it's present as there seems to be no specific API for that. Example CGRect screenBounds UIScreen mainScreen bounds if screenBounds.size.height 568 code for 4 inch screen else code for 3.5 inch screen..
Symbolicating iPhone App Crash Reports http://stackoverflow.com/questions/1460892/symbolicating-iphone-app-crash-reports myApp.app.dSYM and it just outputs the same text that is in the crash report to start with not symbolicated. Am I doing something wrong Any help would be greatly appreciated thanks. iphone crash reports symbolicate share improve this question Steps to analyze crash report from apple Copy the release .app file.. application and go to the folder created above using CD command atos arch armv7 o YOURAPP.app YOURAPP MEMORY_LOCATION_OF_CRASH. The memory location should be the one at which the app crashed as per the report. Ex atos arch armv7 o 'app name.app' 'app name' 0x0003b508 This would show you the exact line method name which..
How do I associate file types with an iPhone application? http://stackoverflow.com/questions/2774343/how-do-i-associate-file-types-with-an-iphone-application file types with an iPhone application On the subject of associating your iPhone app with file types. In this informative question I learned that apps could be associated with custom URL protocols. That was almost one year ago and since then Apple introduced 'Document Support' which goes a step further and allows apps.. This leads me to the question have system apps like Safari or Mail implemented this system for choosing associated applications or will they do nothing as before iphone ios cocoa touch ipad share improve this question File type handling is new with iPhone OS 3.2 and is different than the already existing custom.. key array string com.sunsetlakesoftware.molecules.pdb string string org.gnu.gnu zip archive string array dict array Two images are provided that will be used as icons for the supported types in Mail and other applications capable of showing documents. The LSItemContentTypes key lets you provide an array of Uniform..
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 embed a custom font in an iPhone application I would like to have an app include a custom font for rendering text load it and then use it with standard UIKit elements.. in an iPhone application I would like to have an app include a custom font for rendering text load it and then use it with standard UIKit elements like UILabel. Is this possible I found these links http discussions.apple.com thread.jspa messageID 8304744 http forums.macrumors.com showthread.php t 569311 but these would.. 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 font name was Harrowprint. EDIT there have been a number of replies so far which tell me to read..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c use them. But how do I create them iphone ios objective c cocoa delegates share improve this question An Objective C delegate is just an object that has been assigned as a delegate of another. There's no special process for creating them you simply define a class that implements the delegate methods you're interested.. the delegate methods you're interested in. Though with delegates that use a formal protocol you must declare your delegate to implement that protocol see below. For example suppose you have an NSWindow. If you'd like to implement its delegate's windowDidMove method you could create a class like this @implementation.. you'll have to declare their methods somewhere. There are two basic approaches discussed in the Apple Docs on protocols 1 An Informal Protocol This can be done as NSWindow does in a category on NSObject. For example continuing the example above this is paraphrased from NSWindow.h @interface NSObject NSWindowNotifications..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now Do Now It has just come to light that the UIDevice uniqueIdentifier property is deprecated in iOS 5 and above. No alternative method or property appears to be available or forthcoming. Many of our existing apps are tightly dependent on this property for uniquely identifying a particular device. Can anyone suggest any.. app you can call the CFUUIDCreate function to create a UUID and write it to the defaults database using the NSUserDefaults class. However this value won't be the same if a user uninstalls and re installs the app. iphone ios ipad share improve this question A UUID created by CFUUIDCreate is unique if a user uninstalls.. question A UUID created by CFUUIDCreate is unique if a user uninstalls and re installs the app you will get a new one each time. But you might want it to be not unique i. e. it should stay the same when the user uninstalls and re installs the app. This requires a bit of effort since the most reliable per device identifier..
How to detect iPhone 5 (widescreen devices)? http://stackoverflow.com/questions/12446990/how-to-detect-iphone-5-widescreen-devices hard read some documentation about that. It will save you a lot of time. iOS 6 also offers new features about this but this is still under NDA at the moment. Be sure to read the API changelog on Apple Developer website if you can access to it. Edit As iOS 6 is now out check the new AutoLayout capabilities. That said if.. 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 else Edit Better detection As stated by some people this does only detect a widescreen not an actual iPhone 5. Next versions of the iPod touch will maybe also have such a screen..
http://stackoverflow.com/questions/18736954/missing-recommended-icon-file-the-bundle-does-not-contain-an-app-icon-for-iph and distribute your project as we did for submission of the app binary into the App Store . I hope now you can submit your app without any icon issue. NOTE Be careful to provide all the icons you need. Otherwise your app will not pass Apple validation. If you 脎e received this kind of email Invalid Image For iOS applications..
Adding view on StatusBar in iPhone http://stackoverflow.com/questions/2833724/adding-view-on-statusbar-in-iphone create an instance of your new class and make it visible. overlayWindow ACStatusBarOverlayWindow alloc initWithFrame CGRectZero overlayWindow.hidden NO Be aware of messing with the window key status by using void makeKeyAndVisible or similar. If you make your main window the UIWindow in your Application Delegate loose..
http://stackoverflow.com/questions/37464/iphone-app-minus-app-store package. UUIDs can be easiest retrieved using Ad Hoc Helper available from the App Store. For further details on this method see Craig Hockenberry's Beta testing on iPhone 2.0 article Jailbroken iPhone For jailbroken iPhones you can use the following method which I have personally tested using the AccelerometerGraph.. over WiFi The following steps require openssh and uikittools to be installed first. Replace jasoniphone.local with the hostname of the target device. Be sure to set your own password on both the mobile and root users after installing SSH. To manually compile and install your application on the phone as a system..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events 10 And never call the expirationHandler so your App runs until the system terminates our process app endBackgroundTask bgTask bgTask UIBackgroundTaskInvalid Be very spare with CPU Time here and your app runs longer But one thing is for sure your app will be terminated after a while. But because you registered your app.. the block into a block variable one can recursively start the long running task again within the expiration handler. This leads into endless execution too. Be aware to terminate the task if your application enters foreground again. And terminate the task if you don't need it anymore. For my own experience I measured something...
What is the best way to deal with the NSDateFormatter locale “feature”? http://stackoverflow.com/questions/6613110/what-is-the-best-way-to-deal-with-the-nsdateformatter-locale-feature same date format s you could also add category methods that return singleton instances with certain configurations something like sharedRFC3339DateFormatter . Be aware however that NSDateFormatter is not thread safe and you have to use locks or @synchronized blocks when you're using the same instance from multiple threads...
How to check for an active Internet Connection on iPhone SDK? http://stackoverflow.com/questions/1083701/how-to-check-for-an-active-internet-connection-on-iphone-sdk the Cocoa Touch libraries. I came up with a way to do this using an NSURL . The way I did it seems a bit unreliable because even Google could one day be down and relying on a 3rd party seems bad and while I could check to see for a response.. up with a way to do this using an NSURL . The way I did it seems a bit unreliable because even Google could one day be down and relying on a 3rd party seems bad and while I could check to see for a response from some other websites if Google.. NULL YES NO Is what I have done bad Not to mention stringWithContentsOfURL is deprecated in 3.0 And if so what is a better way to accomplish this iphone objective c ios cocoa touch reachability share improve this question METHOD 1 Use..
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 keyboard is present With the iPhone SDK I have a UIView with UITextFields that brings up a keyboard. I need it to be able to Allow scrolling of the contents of the UIScrollView to see the other text fields once the keyboard is brought up.. is to programatically set the content size of the UIScrollView to the frame size of the UIView . Then what needs to be implemented in order to automatically scroll to the active text field Ideally as much of the setup of the components as.. order to automatically scroll to the active text field Ideally as much of the setup of the components as possible will be done in Interface Builder. I'd like to only write code for what needs it. Note the UIView or UIScrollView that I'm working..
How to develop or migrate apps for iPhone 5 screen resolution? http://stackoverflow.com/questions/12395200/how-to-develop-or-migrate-apps-for-iphone-5-screen-resolution bounds or applicationFrame but then you need to consider status bar height if it's present as there seems to be no specific API for that. Example CGRect screenBounds UIScreen mainScreen bounds if screenBounds.size.height 568 code for..
Symbolicating iPhone App Crash Reports http://stackoverflow.com/questions/1460892/symbolicating-iphone-app-crash-reports the same text that is in the crash report to start with not symbolicated. Am I doing something wrong Any help would be greatly appreciated thanks. iphone crash reports symbolicate share improve this question Steps to analyze crash report.. above using CD command atos arch armv7 o YOURAPP.app YOURAPP MEMORY_LOCATION_OF_CRASH. The memory location should be the one at which the app crashed as per the report. Ex atos arch armv7 o 'app name.app' 'app name' 0x0003b508 This would..
How do I associate file types with an iPhone application? http://stackoverflow.com/questions/2774343/how-do-i-associate-file-types-with-an-iphone-application On the subject of associating your iPhone app with file types. In this informative question I learned that apps could be associated with custom URL protocols. That was almost one year ago and since then Apple introduced 'Document Support' which.. apps like Safari or Mail implemented this system for choosing associated applications or will they do nothing as before iphone ios cocoa touch ipad share improve this question File type handling is new with iPhone OS 3.2 and is different.. string string org.gnu.gnu zip archive string array dict array Two images are provided that will be used as icons for the supported types in Mail and other applications capable of showing documents. The LSItemContentTypes..
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 embed a custom font in an iPhone application I would like to have an app include a custom font for rendering text load it and.. to have an app include a custom font for rendering text load it and then use it with standard UIKit elements like UILabel. Is this possible I found these links http discussions.apple.com thread.jspa messageID 8304744 http forums.macrumors.com.. 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 font name was Harrowprint. EDIT there have been a number..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c ios objective c cocoa delegates share improve this question An Objective C delegate is just an object that has been assigned as a delegate of another. There's no special process for creating them you simply define a class that implements.. in. Though with delegates that use a formal protocol you must declare your delegate to implement that protocol see below. For example suppose you have an NSWindow. If you'd like to implement its delegate's windowDidMove method you could create.. somewhere. There are two basic approaches discussed in the Apple Docs on protocols 1 An Informal Protocol This can be done as NSWindow does in a category on NSObject. For example continuing the example above this is paraphrased from NSWindow.h..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now the UIDevice uniqueIdentifier property is deprecated in iOS 5 and above. No alternative method or property appears to be available or forthcoming. Many of our existing apps are tightly dependent on this property for uniquely identifying a particular.. to create a UUID and write it to the defaults database using the NSUserDefaults class. However this value won't be the same if a user uninstalls and re installs the app. iphone ios ipad share improve this question A UUID created by.. is unique if a user uninstalls and re installs the app you will get a new one each time. But you might want it to be not unique i. e. it should stay the same when the user uninstalls and re installs the app. This requires a bit of effort..
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 setDistanceFilter kCLDistanceFilterNone self.locationManager setDesiredAccuracy kCLLocationAccuracyBest void locationManager CLLocationManager manager didUpdateToLocation CLLocation newLocation fromLocation CLLocation oldLocation.. location manager object's they'll conflict and you get errors from the GPS location manager stating it can't update. 2 Be extremely careful how you update the locationManager.desiredAccuracy and locationManager.distanceFilter Follow the example.. errors. Also only use the constants for the desiredAccuracy supplied by Apple and no others thus kCLLocationAccuracyBest kCLLocationAccuracyNearestTenMeters kCLLocationAccuracyHundredMeters kCLLocationAccuracyKilometer kCLLocationAccuracyThreeKilometers..
NSSetUncaughtExceptionHandler not catch all errors on iPhone http://stackoverflow.com/questions/1128539/nssetuncaughtexceptionhandler-not-catch-all-errors-on-iphone
How to detect iPhone 5 (widescreen devices)? http://stackoverflow.com/questions/12446990/how-to-detect-iphone-5-widescreen-devices It will save you a lot of time. iOS 6 also offers new features about this but this is still under NDA at the moment. Be sure to read the API changelog on Apple Developer website if you can access to it. Edit As iOS 6 is now out check the new.. in the comments by H2CO3. So from now on you can use it in standard if else statements if IS_IPHONE_5 else Edit Better detection As stated by some people this does only detect a widescreen not an actual iPhone 5. Next versions of the iPod..
How to identify CAAnimation within the animationDidStop delegate? http://stackoverflow.com/questions/1255086/how-to-identify-caanimation-within-the-animationdidstop-delegate state in the key value pairing system instead of having to store it in your delegate class. The less code the better. Be sure to check out the Apple Reference on Key Value Pair Coding . Are there better techniques for CAAnimation CATransition..
How get a datetime column in SQLite with Objective C http://stackoverflow.com/questions/1711504/how-get-a-datetime-column-in-sqlite-with-objective-c that I wrote for working with SQLite dates from Objective C. These methods are implemented in a category on NSDate. Be sure to check out the functionality that SQLite offers for working with Julian dates. I have found these to be quite useful..
http://stackoverflow.com/questions/18736954/missing-recommended-icon-file-the-bundle-does-not-contain-an-app-icon-for-iph for submission of the app binary into the App Store . I hope now you can submit your app without any icon issue. NOTE Be careful to provide all the icons you need. Otherwise your app will not pass Apple validation. If you 脎e received this kind..
MFMailComposeViewController image orientation http://stackoverflow.com/questions/20204495/mfmailcomposeviewcontroller-image-orientation This tells displaying software that it needs to rotate the image 90 degrees so it will display correctly. Be clear that this 㶥otation does not effect the underlying storage of the UIImage which remains as 3264w x 2448h. If you capture.. 2.0 break default NSException raise NSInternalInconsistencyException format @ Invalid image orientation UIGraphicsBeginImageContext bounds.size CGContextRef context UIGraphicsGetCurrentContext if orient UIImageOrientationRight orient UIImageOrientationLeft..
Adding view on StatusBar in iPhone http://stackoverflow.com/questions/2833724/adding-view-on-statusbar-in-iphone and make it visible. overlayWindow ACStatusBarOverlayWindow alloc initWithFrame CGRectZero overlayWindow.hidden NO Be aware of messing with the window key status by using void makeKeyAndVisible or similar. If you make your main window the..
How to tint a transparent PNG image in iPhone? http://stackoverflow.com/questions/3514066/how-to-tint-a-transparent-png-image-in-iphone able to provide a snippet UPDATE Lots of great suggestions have been given for this problem since I originally asked. Be sure to read through all the answers to figure out what suits you best. iphone ios image uiimage tint share improve this.. If you want to create a UIImage each of the following code sections can be surrounded by the following code UIGraphicsBeginImageContext myIconImage.size CGContextRef context UIGraphicsGetCurrentContext CGContextTranslateCTM context 0 myIconImage.size.height..
http://stackoverflow.com/questions/37464/iphone-app-minus-app-store retrieved using Ad Hoc Helper available from the App Store. For further details on this method see Craig Hockenberry's Beta testing on iPhone 2.0 article Jailbroken iPhone For jailbroken iPhones you can use the following method which I have personally.. openssh and uikittools to be installed first. Replace jasoniphone.local with the hostname of the target device. Be sure to set your own password on both the mobile and root users after installing SSH. To manually compile and install your..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events so your App runs until the system terminates our process app endBackgroundTask bgTask bgTask UIBackgroundTaskInvalid Be very spare with CPU Time here and your app runs longer But one thing is for sure your app will be terminated after a while... recursively start the long running task again within the expiration handler. This leads into endless execution too. Be aware to terminate the task if your application enters foreground again. And terminate the task if you don't need it anymore...
Send and receive NSData via GameKit http://stackoverflow.com/questions/4837102/send-and-receive-nsdata-via-gamekit tricky... I present this without testing or warranty but if you want a decent start on that approach this may be it. Be warned I didn't check to see if my arbitrary 100 bytes for overhead was realistic. You'll have to play with the numbers..
Invoke native date picker from web-app on iOS/Android http://stackoverflow.com/questions/4946919/invoke-native-date-picker-from-web-app-on-ios-android the type to date and return text when reading back that attribute. Alternatively Modernizr can be used for detection. Beware that it's not enough to check for some version like the Samsung Galaxy S2 on Android 4.0.3 does support type date but.. 01 . When using things like Cordova PhoneGap to display the native date picker on devices that don't support type date Be sure to properly detect built in support. Like on the Galaxy S2 running Android 4.0.3 erroneously also using the Cordova..
What is the best way to deal with the NSDateFormatter locale “feature”? http://stackoverflow.com/questions/6613110/what-is-the-best-way-to-deal-with-the-nsdateformatter-locale-feature methods that return singleton instances with certain configurations something like sharedRFC3339DateFormatter . Be aware however that NSDateFormatter is not thread safe and you have to use locks or @synchronized blocks when you're using..
How to write to plist successfully? http://stackoverflow.com/questions/7254596/how-to-write-to-plist-successfully other people's problems and attempting it for myself. I can read the plist with no problems but I cant update it. Below are my codes on how I am writing my data into the plist. Correct me if I made any mistake. NSString path NSBundle mainBundle..
Core Data's NSPrivateQueueConcurrencyType and sharing objects between threads http://stackoverflow.com/questions/8637921/core-datas-nsprivatequeueconcurrencytype-and-sharing-objects-between-threads moid mo objectID mainMOC performBlock ^ NSManagedObject mainMO mainMOC objectWithID moid Do stuff with 'mainMO'. Be careful NOT to use 'mo'. This gets less confusing if you move the inner mainMOC performBlock call into its own method...
Calling method on category included from iPhone static library causes NSInvalidArgumentException http://stackoverflow.com/questions/932856/calling-method-on-category-included-from-iphone-static-library-causes-nsinvalida share improve this question The only solution that worked was to include all_load in other linker flags. EDIT Be sure to add this flag to the project including the static library not to the static library itself. I know this isn't the..
Availability.h, UIKit.h, etc not found http://stackoverflow.com/questions/9380186/availability-h-uikit-h-etc-not-found so hold down ALT then click Product Clean. You will see Clean changes to Clean Build Folder Another possible solution Be sure to read Matthew's answer here ... iOS SDK broken ever after reinstall UIKit and Foundation frameworks not found Look..
How to post more parameters with image upload code in iOS? http://stackoverflow.com/questions/10618056/how-to-post-more-parameters-with-image-upload-code-in-ios FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM DAMAGES OR OTHER LIABILITY WHETHER IN AN ACTION OF CONTRACT TORT OR OTHERWISE ARISING FROM OUT OF OR.. FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM DAMAGES OR OTHER LIABILITY WHETHER IN AN ACTION OF CONTRACT TORT OR OTHERWISE ARISING FROM OUT OF OR..
OpenGL ES (iPhone) Touch Picking http://stackoverflow.com/questions/2231433/opengl-es-iphone-touch-picking 2008 10 opengl es picking using ray boundingbox.html . . .but I'm not there yet. This also reeks of THERE MUST BE AN EASIER WAY Here is some code void handleTouch CGPoint point GLfloat width backingWidth GLfloat height backingHeight GLfloat..
Draw underlined / strikethrough text ( MULTILINE STRING )? http://stackoverflow.com/questions/2652163/draw-underlined-strikethrough-text-multiline-string needs some optimisation CGContextSetFillColorWithColor c UIColor blackColor CGColor THE TEXT COLOR OF THE STRING TO BE DRAWN. UIFont fontName UIFont fontWithStyle @ Arial BoldMT andFontSize 13 if FontOverLayUnderLine FontOverLayStrikeThrough..
UIWebView with just an image that should fit the whole view http://stackoverflow.com/questions/4667614/uiwebview-with-just-an-image-that-should-fit-the-whole-view fileURLWithPath path NSString html NSString stringWithFormat @ html head THE LINE ABOVE IS TO PREVENT THE VIEW TO BE SCROLLABLE script document.ontouchstart function event event.preventDefault script head body style text align center margin..
Tap pressure strength detection using accelerometer http://stackoverflow.com/questions/5179426/tap-pressure-strength-detection-using-accelerometer WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT INDIRECT INCIDENTAL SPECIAL EXEMPLARY OR CONSEQUENTIAL DAMAGES INCLUDING BUT NOT LIMITED TO PROCUREMENT.. WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT INDIRECT INCIDENTAL SPECIAL EXEMPLARY OR CONSEQUENTIAL DAMAGES INCLUDING BUT NOT LIMITED TO PROCUREMENT..
MKPinannotation detail disclosure button - present new view http://stackoverflow.com/questions/6195774/mkpinannotation-detail-disclosure-button-present-new-view showPin MKCoordinateRegion region MKCoordinateSpan span span.latitudeDelta 0.2 span.longitudeDelta 0.2 MOST CODE WILL BE INSERTED HERE INSTRUCTIONS CCLocationCoordinate2D companyCity mapView.userLocation.coordinate companyCity.latitude latitude..
SFHFKeychainUtils. iOS keychain. ARC compatible http://stackoverflow.com/questions/7663443/sfhfkeychainutils-ios-keychain-arc-compatible FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM DAMAGES OR OTHER LIABILITY WHETHER IN AN ACTION OF CONTRACT TORT OR OTHERWISE ARISING FROM OUT OF OR.. FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM DAMAGES OR OTHER LIABILITY WHETHER IN AN ACTION OF CONTRACT TORT OR OTHERWISE ARISING FROM OUT OF OR..
Recovery deleted files from Xcode http://stackoverflow.com/questions/8874174/recovery-deleted-files-from-xcode images there is no sign of images in trash iphone ios xcode ipad sdk share improve this question DON'T PANIC AND BE HOPEFUL check out your last Device or Simulator build on the Product folder select your file and click reveal in finder..
Adding pause functionality for NSTimer http://stackoverflow.com/questions/8922269/adding-pause-functionality-for-nstimer onReset stop timer timer invalidate calculate the final time that passed THE NEXT LINE IS PROBABLY WRONG AND HAS TO BE time_passed 0 THEN IT WORKS time_passed NSDate date timeIntervalSinceDate start_date get rid of the start date now use this..
Display XIB before UITabBarController? http://stackoverflow.com/questions/9762975/display-xib-before-uitabbarcontroller load a XIB before my UITabBar shows up more clearly i have my first view which is to the user login NO TABBAR SHOULD BE DISPLAYED when user login the app verify the information and after should load the view with a UITabBarController but every..
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