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2014/10/15 ¤U¤È 10:07:26
iphone Programming Glossary: doubleUIImagePickerController and extracting EXIF data from existing photos http://stackoverflow.com/questions/1238838/uiimagepickercontroller-and-extracting-exif-data-from-existing-photos taggedJpegData autorelease Helper methods for location conversion NSMutableArray createLocArray double val val fabs val NSMutableArray array NSMutableArray alloc init double deg int val array addObject NSNumber.. createLocArray double val val fabs val NSMutableArray array NSMutableArray alloc init double deg int val array addObject NSNumber numberWithDouble deg val val deg val val 60 double minutes int.. alloc init double deg int val array addObject NSNumber numberWithDouble deg val val deg val val 60 double minutes int val array addObject NSNumber numberWithDouble minutes val val minutes val val 60 double..
How to detect iPhone 5 (widescreen devices)? http://stackoverflow.com/questions/12446990/how-to-detect-iphone-5-widescreen-devices has a height of 568. You can imagine a macro to simplify all of this #define IS_IPHONE_5 fabs double UIScreen mainScreen bounds .size.height double 568 DBL_EPSILON The use of fabs with the epsilon is here.. to simplify all of this #define IS_IPHONE_5 fabs double UIScreen mainScreen bounds .size.height double 568 DBL_EPSILON The use of fabs with the epsilon is here to prevent precision errors when comparing.. another set of macros. Let's rename the original macro IS_WIDESCREEN #define IS_WIDESCREEN fabs double UIScreen mainScreen bounds .size.height double 568 DBL_EPSILON And let's add model detection macros..
How to Rotate a UIImage 90 degrees? http://stackoverflow.com/questions/1315251/how-to-rotate-a-uiimage-90-degrees core graphics rotation share improve this question What about something like static inline double radians double degrees return degrees M_PI 180 UIImage rotate UIImage src UIImageOrientation orientation.. rotation share improve this question What about something like static inline double radians double degrees return degrees M_PI 180 UIImage rotate UIImage src UIImageOrientation orientation UIGraphicsBeginImageContext..
iPhone how to check that a string is numeric only http://stackoverflow.com/questions/1320295/iphone-how-to-check-that-a-string-is-numeric-only expressions and turns the text red when its invalid. static bool TextIsValidValue NSString newText double value bool result false if newText isMatchedByRegex @ ^ 0 1 9 d . d result true value newText doubleValue.. value bool result false if newText isMatchedByRegex @ ^ 0 1 9 d . d result true value newText doubleValue return result IBAction doTextChanged id sender double value if TextIsValidValue i_pause stringValue.. 0 1 9 d . d result true value newText doubleValue return result IBAction doTextChanged id sender double value if TextIsValidValue i_pause stringValue value i_pause setTextColor NSColor blackColor do something..
How do I reset the scale/zoom of a web app on an orientation change on the iPhone? http://stackoverflow.com/questions/2557801/how-do-i-reset-the-scale-zoom-of-a-web-app-on-an-orientation-change-on-the-iphon into landscape and it's scaled up. To get it to scale correctly for the landscape mode I have to double tap on something twice first to zoom all the way in the normal double tap behavior and again to zoom.. the landscape mode I have to double tap on something twice first to zoom all the way in the normal double tap behavior and again to zoom all the way out again the normal double tap behavior . When it zooms.. all the way in the normal double tap behavior and again to zoom all the way out again the normal double tap behavior . When it zooms out it zooms out to the correct NEW scale for landscape mode. Switching..
Build fat static library (device + simulator) using Xcode and SDK 4+ http://stackoverflow.com/questions/3520977/build-fat-static-library-device-simulator-using-xcode-and-sdk-4 then mkdir p CREATING_UNIVERSAL_DIR PUBLIC_HEADERS_FOLDER_PATH # needs to be outside the double quotes cp r CURRENTCONFIG_DEVICE_DIR PUBLIC_HEADERS_FOLDER_PATH CREATING_UNIVERSAL_DIR PUBLIC_HEADERS_FOLDER_PATH..
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints while the scale is x1. CATiledLayer rendering kicks in once the scale is 1. iBooks takes a similar double take approach as if you scroll the pages you can see a lower res version of the page for just less than..
Example or explanation of Core Data Migration with multiple passes? http://stackoverflow.com/questions/5995231/example-or-explanation-of-core-data-migration-with-multiple-passes is The Event entity is gone and we've got two new ones. One which stores a timestamp as a double and the second one which should store a date as NSString . The goal is to transfer all Version 1 Events.. model which is almost identical just a timeIntervalSince1970 used to convert the NSDate to a double. Finally we need to trigger the migration. I'll skip the boilerplate code for now. If you need it I'll..
How do I draw a line on the iPhone? http://stackoverflow.com/questions/856354/how-do-i-draw-a-line-on-the-iphone Subclass of set to UIView and give it a name say MyView.m. Now open up the Resources group and double click on MainWindow.xib to open it in Interface Builder. From here you should see a window named Window..
http://stackoverflow.com/questions/999313/iphone-app-signing-a-valid-signing-identity-matching-this-profile-could-not-be install them Download the WWDR certificate and install it Create a new provisioning profile and double click it to install All the certificates report as valid but Xcode still won't recognize them. What..
UIImagePickerController and extracting EXIF data from existing photos http://stackoverflow.com/questions/1238838/uiimagepickercontroller-and-extracting-exif-data-from-existing-photos populateImageData taggedJpegData jpegScanner release return taggedJpegData autorelease Helper methods for location conversion NSMutableArray createLocArray double val val fabs val NSMutableArray array NSMutableArray alloc init double deg int val array addObject NSNumber numberWithDouble deg val val deg val val 60 double minutes.. autorelease Helper methods for location conversion NSMutableArray createLocArray double val val fabs val NSMutableArray array NSMutableArray alloc init double deg int val array addObject NSNumber numberWithDouble deg val val deg val val 60 double minutes int val array addObject NSNumber numberWithDouble minutes val val.. double val val fabs val NSMutableArray array NSMutableArray alloc init double deg int val array addObject NSNumber numberWithDouble deg val val deg val val 60 double minutes int val array addObject NSNumber numberWithDouble minutes val val minutes val val 60 double seconds val array addObject NSNumber numberWithDouble seconds..
How to detect iPhone 5 (widescreen devices)? http://stackoverflow.com/questions/12446990/how-to-detect-iphone-5-widescreen-devices . UIScreen mainScreen bounds .size.height The iPhone 5's screen has a height of 568. You can imagine a macro to simplify all of this #define IS_IPHONE_5 fabs double UIScreen mainScreen bounds .size.height double 568 DBL_EPSILON The use of fabs with the epsilon is here to prevent precision errors when comparing floating points.. iPhone 5's screen has a height of 568. You can imagine a macro to simplify all of this #define IS_IPHONE_5 fabs double UIScreen mainScreen bounds .size.height double 568 DBL_EPSILON The use of fabs with the epsilon is here to prevent precision errors when comparing floating points as pointed in the comments by H2CO3. So from.. iPod touch will maybe also have such a screen so we may use another set of macros. Let's rename the original macro IS_WIDESCREEN #define IS_WIDESCREEN fabs double UIScreen mainScreen bounds .size.height double 568 DBL_EPSILON And let's add model detection macros #define IS_IPHONE UIDevice currentDevice model isEqualToString..
How to Rotate a UIImage 90 degrees? http://stackoverflow.com/questions/1315251/how-to-rotate-a-uiimage-90-degrees CGImageRelease ref return newImage iphone uikit uiimage core graphics rotation share improve this question What about something like static inline double radians double degrees return degrees M_PI 180 UIImage rotate UIImage src UIImageOrientation orientation UIGraphicsBeginImageContext src.size CGContextRef context.. ref return newImage iphone uikit uiimage core graphics rotation share improve this question What about something like static inline double radians double degrees return degrees M_PI 180 UIImage rotate UIImage src UIImageOrientation orientation UIGraphicsBeginImageContext src.size CGContextRef context UIGraphicsGetCurrentContext..
iPhone how to check that a string is numeric only http://stackoverflow.com/questions/1320295/iphone-how-to-check-that-a-string-is-numeric-only with the iPhone. It's based on the RegexKitLite regular expressions and turns the text red when its invalid. static bool TextIsValidValue NSString newText double value bool result false if newText isMatchedByRegex @ ^ 0 1 9 d . d result true value newText doubleValue return result IBAction doTextChanged id sender double.. invalid. static bool TextIsValidValue NSString newText double value bool result false if newText isMatchedByRegex @ ^ 0 1 9 d . d result true value newText doubleValue return result IBAction doTextChanged id sender double value if TextIsValidValue i_pause stringValue value i_pause setTextColor NSColor blackColor do something.. value bool result false if newText isMatchedByRegex @ ^ 0 1 9 d . d result true value newText doubleValue return result IBAction doTextChanged id sender double value if TextIsValidValue i_pause stringValue value i_pause setTextColor NSColor blackColor do something with the value else i_pause setTextColor NSColor redColor..
How do I reset the scale/zoom of a web app on an orientation change on the iPhone? http://stackoverflow.com/questions/2557801/how-do-i-reset-the-scale-zoom-of-a-web-app-on-an-orientation-change-on-the-iphon I start the app in portrait mode it works fine. Then I rotate into landscape and it's scaled up. To get it to scale correctly for the landscape mode I have to double tap on something twice first to zoom all the way in the normal double tap behavior and again to zoom all the way out again the normal double tap behavior . When.. and it's scaled up. To get it to scale correctly for the landscape mode I have to double tap on something twice first to zoom all the way in the normal double tap behavior and again to zoom all the way out again the normal double tap behavior . When it zooms out it zooms out to the correct NEW scale for landscape mode... mode I have to double tap on something twice first to zoom all the way in the normal double tap behavior and again to zoom all the way out again the normal double tap behavior . When it zooms out it zooms out to the correct NEW scale for landscape mode. Switching back to portrait seems to work more consistently that is it..
Build fat static library (device + simulator) using Xcode and SDK 4+ http://stackoverflow.com/questions/3520977/build-fat-static-library-device-simulator-using-xcode-and-sdk-4 include ' if d CURRENTCONFIG_DEVICE_DIR PUBLIC_HEADERS_FOLDER_PATH then mkdir p CREATING_UNIVERSAL_DIR PUBLIC_HEADERS_FOLDER_PATH # needs to be outside the double quotes cp r CURRENTCONFIG_DEVICE_DIR PUBLIC_HEADERS_FOLDER_PATH CREATING_UNIVERSAL_DIR PUBLIC_HEADERS_FOLDER_PATH fi fi INSTALL INSTRUCTIONS Create a static lib..
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints page in a separate thread issues here too and presenting it while the scale is x1. CATiledLayer rendering kicks in once the scale is 1. iBooks takes a similar double take approach as if you scroll the pages you can see a lower res version of the page for just less than a second before a crisp version appears. Im rendering 2..
Example or explanation of Core Data Migration with multiple passes? http://stackoverflow.com/questions/5995231/example-or-explanation-of-core-data-migration-with-multiple-passes data model which looks like this Data Model Version 2 The difference is The Event entity is gone and we've got two new ones. One which stores a timestamp as a double and the second one which should store a date as NSString . The goal is to transfer all Version 1 Events to the two new entities and convert the values along the.. itself I'll skip the part for setting up the second mapping model which is almost identical just a timeIntervalSince1970 used to convert the NSDate to a double. Finally we need to trigger the migration. I'll skip the boilerplate code for now. If you need it I'll post here. It can be found at Customizing the Migration Process..
How do I draw a line on the iPhone? http://stackoverflow.com/questions/856354/how-do-i-draw-a-line-on-the-iphone template. Then go New File and create an Objective C Class with Subclass of set to UIView and give it a name say MyView.m. Now open up the Resources group and double click on MainWindow.xib to open it in Interface Builder. From here you should see a window named Window . Hit Cmd Shift L to bring up the Library and drag a View..
http://stackoverflow.com/questions/999313/iphone-app-signing-a-valid-signing-identity-matching-this-profile-could-not-be certificates in the Apple developer center Download and install them Download the WWDR certificate and install it Create a new provisioning profile and double click it to install All the certificates report as valid but Xcode still won't recognize them. What should I try next Edit I completely re installed Mac OS X and..
UIImagePickerController and extracting EXIF data from existing photos http://stackoverflow.com/questions/1238838/uiimagepickercontroller-and-extracting-exif-data-from-existing-photos release return taggedJpegData autorelease Helper methods for location conversion NSMutableArray createLocArray double val val fabs val NSMutableArray array NSMutableArray alloc init double deg int val array addObject NSNumber numberWithDouble.. conversion NSMutableArray createLocArray double val val fabs val NSMutableArray array NSMutableArray alloc init double deg int val array addObject NSNumber numberWithDouble deg val val deg val val 60 double minutes int val array addObject.. NSMutableArray alloc init double deg int val array addObject NSNumber numberWithDouble deg val val deg val val 60 double minutes int val array addObject NSNumber numberWithDouble minutes val val minutes val val 60 double seconds val array addObject..
How to detect iPhone 5 (widescreen devices)? http://stackoverflow.com/questions/12446990/how-to-detect-iphone-5-widescreen-devices The iPhone 5's screen has a height of 568. You can imagine a macro to simplify all of this #define IS_IPHONE_5 fabs double UIScreen mainScreen bounds .size.height double 568 DBL_EPSILON The use of fabs with the epsilon is here to prevent precision.. can imagine a macro to simplify all of this #define IS_IPHONE_5 fabs double UIScreen mainScreen bounds .size.height double 568 DBL_EPSILON The use of fabs with the epsilon is here to prevent precision errors when comparing floating points as pointed.. a screen so we may use another set of macros. Let's rename the original macro IS_WIDESCREEN #define IS_WIDESCREEN fabs double UIScreen mainScreen bounds .size.height double 568 DBL_EPSILON And let's add model detection macros #define IS_IPHONE UIDevice..
How to Rotate a UIImage 90 degrees? http://stackoverflow.com/questions/1315251/how-to-rotate-a-uiimage-90-degrees iphone uikit uiimage core graphics rotation share improve this question What about something like static inline double radians double degrees return degrees M_PI 180 UIImage rotate UIImage src UIImageOrientation orientation UIGraphicsBeginImageContext.. uiimage core graphics rotation share improve this question What about something like static inline double radians double degrees return degrees M_PI 180 UIImage rotate UIImage src UIImageOrientation orientation UIGraphicsBeginImageContext src.size..
iPhone how to check that a string is numeric only http://stackoverflow.com/questions/1320295/iphone-how-to-check-that-a-string-is-numeric-only regular expressions and turns the text red when its invalid. static bool TextIsValidValue NSString newText double value bool result false if newText isMatchedByRegex @ ^ 0 1 9 d . d result true value newText doubleValue return result.. NSString newText double value bool result false if newText isMatchedByRegex @ ^ 0 1 9 d . d result true value newText doubleValue return result IBAction doTextChanged id sender double value if TextIsValidValue i_pause stringValue value i_pause setTextColor.. isMatchedByRegex @ ^ 0 1 9 d . d result true value newText doubleValue return result IBAction doTextChanged id sender double value if TextIsValidValue i_pause stringValue value i_pause setTextColor NSColor blackColor do something with the value..
How do I reset the scale/zoom of a web app on an orientation change on the iPhone? http://stackoverflow.com/questions/2557801/how-do-i-reset-the-scale-zoom-of-a-web-app-on-an-orientation-change-on-the-iphon fine. Then I rotate into landscape and it's scaled up. To get it to scale correctly for the landscape mode I have to double tap on something twice first to zoom all the way in the normal double tap behavior and again to zoom all the way out again.. scale correctly for the landscape mode I have to double tap on something twice first to zoom all the way in the normal double tap behavior and again to zoom all the way out again the normal double tap behavior . When it zooms out it zooms out to.. twice first to zoom all the way in the normal double tap behavior and again to zoom all the way out again the normal double tap behavior . When it zooms out it zooms out to the correct NEW scale for landscape mode. Switching back to portrait seems..
Build fat static library (device + simulator) using Xcode and SDK 4+ http://stackoverflow.com/questions/3520977/build-fat-static-library-device-simulator-using-xcode-and-sdk-4 PUBLIC_HEADERS_FOLDER_PATH then mkdir p CREATING_UNIVERSAL_DIR PUBLIC_HEADERS_FOLDER_PATH # needs to be outside the double quotes cp r CURRENTCONFIG_DEVICE_DIR PUBLIC_HEADERS_FOLDER_PATH CREATING_UNIVERSAL_DIR PUBLIC_HEADERS_FOLDER_PATH fi fi..
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints and presenting it while the scale is x1. CATiledLayer rendering kicks in once the scale is 1. iBooks takes a similar double take approach as if you scroll the pages you can see a lower res version of the page for just less than a second before..
Example or explanation of Core Data Migration with multiple passes? http://stackoverflow.com/questions/5995231/example-or-explanation-of-core-data-migration-with-multiple-passes Version 2 The difference is The Event entity is gone and we've got two new ones. One which stores a timestamp as a double and the second one which should store a date as NSString . The goal is to transfer all Version 1 Events to the two new entities.. up the second mapping model which is almost identical just a timeIntervalSince1970 used to convert the NSDate to a double. Finally we need to trigger the migration. I'll skip the boilerplate code for now. If you need it I'll post here. It can..
How do I draw a line on the iPhone? http://stackoverflow.com/questions/856354/how-do-i-draw-a-line-on-the-iphone Objective C Class with Subclass of set to UIView and give it a name say MyView.m. Now open up the Resources group and double click on MainWindow.xib to open it in Interface Builder. From here you should see a window named Window . Hit Cmd Shift..
http://stackoverflow.com/questions/999313/iphone-app-signing-a-valid-signing-identity-matching-this-profile-could-not-be center Download and install them Download the WWDR certificate and install it Create a new provisioning profile and double click it to install All the certificates report as valid but Xcode still won't recognize them. What should I try next Edit..
Getting wrong playback state in MP Music Player Controller in ios 5 http://stackoverflow.com/questions/10118726/getting-wrong-playback-state-in-mp-music-player-controller-in-ios-5 my app the play pause button shows the pause icon correctly 2. Background my app and lock my phone for ~10 minutes 3. Double tap home and hit the pause button from the iPod controls 4. Unlock my phone and open my app again 5. Music will be stopped..
Installing Core-Plot in Xcode 4.2 for iOS project http://stackoverflow.com/questions/10260291/installing-core-plot-in-xcode-4-2-for-ios-project Build Settings for your application project under the Header Search Paths build setting. It looks like the following Double click on the field for the header search paths and bring up this popup The path you specify here is the relative path from..
How can I detect a double tap on a certain cell in UITableView? http://stackoverflow.com/questions/1031254/how-can-i-detect-a-double-tap-on-a-certain-cell-in-uitableview your double tap code here tapTimer invalidate self setTapTimer nil UIAlertView alert UIAlertView alloc initWithTitle @ Double Tap message @ You double tapped the row delegate self cancelButtonTitle nil otherButtonTitles @ OK nil alert show alert..
Does JSONKit support ARC, or is there a fork that supports ARC? http://stackoverflow.com/questions/10681597/does-jsonkit-support-arc-or-is-there-a-fork-that-supports-arc
How to add a breakpoint to objc_exception_throw? http://stackoverflow.com/questions/1163981/how-to-add-a-breakpoint-to-objc-exception-throw global breakpoints in the left hand menu. There should be a box on the right under the Breakpoint column with the text Double Click for symbol . Single click in this box and type in objc_exception_throw . Then single click in the space next to objc_exception_throw..
http://stackoverflow.com/questions/1622729/double-vs-float-on-the-iphone vs float on the iPhone I have just heard that the iphone cannot do double natively thereby making them much slower that..
Implementing Unit Testing with the iPhone SDK http://stackoverflow.com/questions/2002330/implementing-unit-testing-with-the-iphone-sdk project for both was unchanged . Edit Image URLS updated. iphone xcode unit testing share improve this question Double click 'Run script' under 'Targets' 'Your script target name' then type # Run the unit tests in this test bundle. SYSTEM_DEVELOPER_DIR..
What causes this error? “CALayer position contains NaN: [240 nan]” http://stackoverflow.com/questions/3025176/what-causes-this-error-calayer-position-contains-nan-240-nan time. For me it was myUISlider.value NaN. To set breakpoint XCode 3.x CMD SHIFT Y debug window. Breakpoints button. Double click for symbol Type in NSLog no quotes. XCode 4.x CMD 6 breakpoints navigator. to add breakpoint lower left. Select ADD..
“Warning: iPhone apps should include an armv6 architecture” even with build config set http://stackoverflow.com/questions/4198676/warning-iphone-apps-should-include-an-armv6-architecture-even-with-build-conf tab in the right column Click the 'Release' or 'Distribution' row under 'Architectures' and choose 'Other...' Double click the highlighted row named ' ARCHS_STANDARD_32_BIT ' in the popover that appears and replace it by typing 'armv6'...
http://stackoverflow.com/questions/4228644/using-custom-fonts-in-cocos2d to your project. Add the font names to your info.plist file using the array below as an example. Find the font's name Double click the font file and use the font name shown in the title of the window. In this example it is Action Man To use the..
XCode 4 says “finished running <my app>” on the targeted device — Nothing happens http://stackoverflow.com/questions/5292286/xcode-4-says-finished-running-my-app-on-the-targeted-device-nothing-happe Info.plist You may also need to change the build settings to compile with armv6 instead of armv7. This is the default Double click on 'Standard armv7 ' to add another then click the ' ' in the popup and type in 'armv6' Click done and it should look..
iOS 5 Best Practice (Release/retain?) http://stackoverflow.com/questions/6308425/ios-5-best-practice-release-retain for that class. In Xcode in the target Build Phases tab open the Compile Sources group to reveal the source file list. Double click the file for which you want to set the flag enter fno objc arc in the pop up panel then click Done. See the full transition..
Adding quartzcore to xcode 4 for iOS http://stackoverflow.com/questions/6956432/adding-quartzcore-to-xcode-4-for-ios QuartzCore into the search field 6 You should see a folder named iOS 4.3 with the QuartzCore.framework inside of it 7 Double click the QuartzCore.framework to add it to your current project. Then it should appear in left sidebar and you can drag..
How to know whether app is terminated by user or iOS (after 10min background) http://stackoverflow.com/questions/7343404/how-to-know-whether-app-is-terminated-by-user-or-ios-after-10min-background after 10min background How to know whether app is terminated by user or by iOS when restart app 'By user' means by Double clicking Home Button and pressing button . killed by user 'By iOS' means app become background running state and iOS terminate..
Xcode 4.2 Warnings when dropping Nav Controller on Tab Bar in IB http://stackoverflow.com/questions/7625731/xcode-4-2-warnings-when-dropping-nav-controller-on-tab-bar-in-ib ios5 xcode4.2 share improve this question Just uncheck the Defines Context checkbox in the attributes inspector. Double click on MainWindow.xib select the navigation controller then go to View Utilities Attributes Inspector. That'll get rid..
Is there a good charting library for iPhone? [closed] http://stackoverflow.com/questions/769749/is-there-a-good-charting-library-for-iphone of development. Edit to add some details of requirements as they currently stand Bar Charts Horizontal bar charts Double stacked bar charts Axis labels including rotated 90 degrees on the y axis Labels above each bar on the chart Shaded or custom..
XML Parsing in Cocoa Touch/iPhone http://stackoverflow.com/questions/773651/xml-parsing-in-cocoa-touch-iphone help. This is how they set the key value of a node name aBook setValue currentElementValue forKey elementName P.S. Double check your XML though seems you are missing a root node on some of your results. Unless you left it out for simplicity...
How to insert utf-8 mb4 character(emoji in ios5) in mysql? http://stackoverflow.com/questions/7814293/how-to-insert-utf-8-mb4-characteremoji-in-ios5-in-mysql back up your data before trying Also make sure your app layer sets its database connections' character set to utf8mb4. Double check this is actually happening “Â if you're running an older version of your chosen framework's mysql client library it..
http://stackoverflow.com/questions/7845832/how-to-perform-a-segue your view controller in the storyboard designer and choose Editor Embed In Navigation Controller in the menu. Original Double check the Identifier storyboard code and try setting sender to self . If that doesn't work you can create a Segue object..
Beginner iphone question: drawing a rectangle. What am I doing wrong? http://stackoverflow.com/questions/970137/beginner-iphone-question-drawing-a-rectangle-what-am-i-doing-wrong View based template create a project named Drawer . Add a UIView class to your project. Name it SquareView .h and .m . Double click DrawerViewController.xib to open it in Interface Builder . Change the generic view there to SquareView in the Identity..
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