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2014/10/15 ¤U¤È 10:12:21
iphone Programming Glossary: ontoHow can I get a writable path on the iPhone? http://stackoverflow.com/questions/1567134/how-can-i-get-a-writable-path-on-the-iphone of a pain but that's how it is. Then when you have a writable path you just append a file name onto it like so NSString filePath documentsDirectory stringByAppendingPathComponent @ SomeDirectory SomeFile.txt..
Detecting which UIButton was pressed in a UITableView http://stackoverflow.com/questions/1802707/detecting-which-uibutton-was-pressed-in-a-uitableview tags but I'm not sure this is the best route. I'd like to be able to somehow tag the indexPath onto the control. void buttonPressedAction id sender UIButton button UIButton sender how do I know which..
Is there a documented way to set the iPhone orientation? http://stackoverflow.com/questions/181780/is-there-a-documented-way-to-set-the-iphone-orientation iPhone 3.1.2 SDK. It now appears to honor the requested orientation of the view being pushed back onto the stack. That likely means that you would need to detect older iPhone OS versions and only apply the..
Observing pinch multi-touch gestures in a UITableView http://stackoverflow.com/questions/2003201/observing-pinch-multi-touch-gestures-in-a-uitableview including this one Similar question But while I can create a UIViewTouch object and overlay it onto my UITableView scroll events are not being relayed to my UITableView I can still select cells and they..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework FFT Bins using phase change between frames to get the precise frequency for a given bin. Ok Now onto the code Note the 'ip' in vDSP_fft_zrip ' in place ' ie output overwrites A 'r' means it takes real..
http://stackoverflow.com/questions/37464/iphone-app-minus-app-store a member of the developer program. You can then use the adhoc system to install your application onto up to 100 devices. The developer program has the details but it involves adding UUIDs for each of the..
How do you beta test an iphone app? http://stackoverflow.com/questions/40154/how-do-you-beta-test-an-iphone-app distributing your application to beta testers . Related Also see this question on getting your app onto phones without using the App Store . iphone ios beta share improve this question Creating ad hoc.. Provisioning Portal Send an email to each beta tester with the following message To get my app on onto your iPhone I need some information about your phone. Guess what there is an app for that Click on the.. and the .mobileprovision file and send the archive to your tester. Here is my app. To install it onto your phone Unzip the archive file. Open iTunes. Drag both files into iTunes and drop them on the Library..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers assignment to build a UINavigationController based app that has multiple UIViewControllers pushed onto the UINavigationController stack. That's how the UINavigationController works. That's logical. However.. page 10 of the Stanford presentation for an example of how to programmatically push a controller onto the navigation controller. For an example of how to do this visually using Interface Builder take a..
Tab bar controller inside a navigation controller, or sharing a navigation root view http://stackoverflow.com/questions/576764/tab-bar-controller-inside-a-navigation-controller-or-sharing-a-navigation-root for pushViewController animated emphasis added viewController The view controller that is pushed onto the stack. It cannot be an instance of tab bar controller. I would like to avoid private APIs and the.. write a custom XXTabBarController plain subclass of UIViewController that is happy to get pushed onto a nav controller stack but still lives by the view controller philosophy. Each tab on the account specific..
CADisplayLink OpenGL rendering breaks UIScrollView behaviour http://stackoverflow.com/questions/5944050/cadisplaylink-opengl-rendering-breaks-uiscrollview-behaviour dispatch_semaphore_create 1 This code will only add a new frame rendering action onto the queue if one isn't in the middle of executing. That way the CADisplayLink can fire continuously..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c it will be destroyed. NSString s NSString stringWithString @ Hello World If you want to hang onto that string you'd need to call retain explicitly and then explicitly release it when you're done. Consider..
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 hour region sets the 12 24 hour switch in settings to 12. Then the above starts tacking AM or PM onto the end of the resulting string. See eg NSDateFormatter am I doing something wrong or is this a bug..
How do I draw a line on the iPhone? http://stackoverflow.com/questions/856354/how-do-i-draw-a-line-on-the-iphone see a window named Window . Hit Cmd Shift L to bring up the Library and drag a View component onto your window and position it so you can see all of it. With your new View selected hit Cmd 4 to bring..
How can I get a writable path on the iPhone? http://stackoverflow.com/questions/1567134/how-can-i-get-a-writable-path-on-the-iphone so when writing you have to check and create every time Kind of a pain but that's how it is. Then when you have a writable path you just append a file name onto it like so NSString filePath documentsDirectory stringByAppendingPathComponent @ SomeDirectory SomeFile.txt or NSString filePath cachePath stringByAppendingPathComponent..
Detecting which UIButton was pressed in a UITableView http://stackoverflow.com/questions/1802707/detecting-which-uibutton-was-pressed-in-a-uitableview do I know which button has been pressed. I've considered using tags but I'm not sure this is the best route. I'd like to be able to somehow tag the indexPath onto the control. void buttonPressedAction id sender UIButton button UIButton sender how do I know which button sent this message processing button press for this row..
Is there a documented way to set the iPhone orientation? http://stackoverflow.com/questions/181780/is-there-a-documented-way-to-set-the-iphone-orientation this question This is no longer an issue on the later iPhone 3.1.2 SDK. It now appears to honor the requested orientation of the view being pushed back onto the stack. That likely means that you would need to detect older iPhone OS versions and only apply the setOrientation when it is prior to the latest release. It..
Observing pinch multi-touch gestures in a UITableView http://stackoverflow.com/questions/2003201/observing-pinch-multi-touch-gestures-in-a-uitableview in out on top of a UITableView I have looked at several methods including this one Similar question But while I can create a UIViewTouch object and overlay it onto my UITableView scroll events are not being relayed to my UITableView I can still select cells and they respond properly by triggering a transition to a new ViewController..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework There is a cunning trick Extracting precise frequencies from FFT Bins using phase change between frames to get the precise frequency for a given bin. Ok Now onto the code Note the 'ip' in vDSP_fft_zrip ' in place ' ie output overwrites A 'r' means it takes real inputs Look at the documentation on vDSP_fft_zrip Real data..
http://stackoverflow.com/questions/37464/iphone-app-minus-app-store For a standard iPhone you'll need to pay the US 99 yr to be a member of the developer program. You can then use the adhoc system to install your application onto up to 100 devices. The developer program has the details but it involves adding UUIDs for each of the devices to your application package. UUIDs can be easiest..
How do you beta test an iphone app? http://stackoverflow.com/questions/40154/how-do-you-beta-test-an-iphone-app testing Answer iOS 4.0 and later Instructions on wirelessly distributing your application to beta testers . Related Also see this question on getting your app onto phones without using the App Store . iphone ios beta share improve this question Creating ad hoc distribution profiles The instructions that Apple provides.. on your own iPhone through Xcode. Step A Add devices to the Provisioning Portal Send an email to each beta tester with the following message To get my app on onto your iPhone I need some information about your phone. Guess what there is an app for that Click on the below link and install and then run the app. http itunes.apple.com.. click the app and select Reveal in Finder . Zip the .app file and the .mobileprovision file and send the archive to your tester. Here is my app. To install it onto your phone Unzip the archive file. Open iTunes. Drag both files into iTunes and drop them on the Library group. Sync your phone to install the app. Done Phew. This..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers class cs193p cgi bin index.php Lecture 08 is related to an assignment to build a UINavigationController based app that has multiple UIViewControllers pushed onto the UINavigationController stack. That's how the UINavigationController works. That's logical. However there are some stern warnings in the slide about communicating.. controller unless it's strictly presentation data. Second see page 10 of the Stanford presentation for an example of how to programmatically push a controller onto the navigation controller. For an example of how to do this visually using Interface Builder take a look at this tutorial . Third and perhaps most importantly note..
Tab bar controller inside a navigation controller, or sharing a navigation root view http://stackoverflow.com/questions/576764/tab-bar-controller-inside-a-navigation-controller-or-sharing-a-navigation-root appears to be unsupported according to the SDK documentation for pushViewController animated emphasis added viewController The view controller that is pushed onto the stack. It cannot be an instance of tab bar controller. I would like to avoid private APIs and the like but I'm not sure why this usage is explicitly prohibited.. don't use UITabBarController in Tweetie. It's pretty easy to write a custom XXTabBarController plain subclass of UIViewController that is happy to get pushed onto a nav controller stack but still lives by the view controller philosophy. Each tab on the account specific view Tweets Replies Messages is its own view controller..
CADisplayLink OpenGL rendering breaks UIScrollView behaviour http://stackoverflow.com/questions/5944050/cadisplaylink-opengl-rendering-breaks-uiscrollview-behaviour frameRenderingSemaphore is created earlier as follows frameRenderingSemaphore dispatch_semaphore_create 1 This code will only add a new frame rendering action onto the queue if one isn't in the middle of executing. That way the CADisplayLink can fire continuously but it won't overload the queue with pending rendering actions..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c s has a reference count of 1 but after the event loop completes it will be destroyed. NSString s NSString stringWithString @ Hello World If you want to hang onto that string you'd need to call retain explicitly and then explicitly release it when you're done. Consider the following very contrived bit of code and you'll see..
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 most locales UNTIL ... someone with their phone set to a 24 hour region sets the 12 24 hour switch in settings to 12. Then the above starts tacking AM or PM onto the end of the resulting string. See eg NSDateFormatter am I doing something wrong or is this a bug And see https developer.apple.com library ios qa qa1480 _index.html..
How do I draw a line on the iPhone? http://stackoverflow.com/questions/856354/how-do-i-draw-a-line-on-the-iphone 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 component onto your window and position it so you can see all of it. With your new View selected hit Cmd 4 to bring up the Identity Inspector and under Class Identity click the..
How can I get a writable path on the iPhone? http://stackoverflow.com/questions/1567134/how-can-i-get-a-writable-path-on-the-iphone create every time Kind of a pain but that's how it is. Then when you have a writable path you just append a file name onto it like so NSString filePath documentsDirectory stringByAppendingPathComponent @ SomeDirectory SomeFile.txt or NSString..
Detecting which UIButton was pressed in a UITableView http://stackoverflow.com/questions/1802707/detecting-which-uibutton-was-pressed-in-a-uitableview I've considered using tags but I'm not sure this is the best route. I'd like to be able to somehow tag the indexPath onto the control. void buttonPressedAction id sender UIButton button UIButton sender how do I know which button sent this message..
Is there a documented way to set the iPhone orientation? http://stackoverflow.com/questions/181780/is-there-a-documented-way-to-set-the-iphone-orientation issue on the later iPhone 3.1.2 SDK. It now appears to honor the requested orientation of the view being pushed back onto the stack. That likely means that you would need to detect older iPhone OS versions and only apply the setOrientation when..
Observing pinch multi-touch gestures in a UITableView http://stackoverflow.com/questions/2003201/observing-pinch-multi-touch-gestures-in-a-uitableview at several methods including this one Similar question But while I can create a UIViewTouch object and overlay it onto my UITableView scroll events are not being relayed to my UITableView I can still select cells and they respond properly..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework frequencies from FFT Bins using phase change between frames to get the precise frequency for a given bin. Ok Now onto the code Note the 'ip' in vDSP_fft_zrip ' in place ' ie output overwrites A 'r' means it takes real inputs Look at the documentation..
http://stackoverflow.com/questions/37464/iphone-app-minus-app-store the US 99 yr to be a member of the developer program. You can then use the adhoc system to install your application onto up to 100 devices. The developer program has the details but it involves adding UUIDs for each of the devices to your application..
How do you beta test an iphone app? http://stackoverflow.com/questions/40154/how-do-you-beta-test-an-iphone-app on wirelessly distributing your application to beta testers . Related Also see this question on getting your app onto phones without using the App Store . iphone ios beta share improve this question Creating ad hoc distribution profiles.. A Add devices to the Provisioning Portal Send an email to each beta tester with the following message To get my app on onto your iPhone I need some information about your phone. Guess what there is an app for that Click on the below link and install.. . Zip the .app file and the .mobileprovision file and send the archive to your tester. Here is my app. To install it onto your phone Unzip the archive file. Open iTunes. Drag both files into iTunes and drop them on the Library group. Sync your..
CGContextDrawImage draws image upside down when passed UIImage.CGImage http://stackoverflow.com/questions/506622/cgcontextdrawimage-draws-image-upside-down-when-passed-uiimage-cgimage correct orientation into your current image context I'm pretty sure this has something to do with the UIImage holding onto knowledge of the orientation while the CGContextDrawImage method gets the underlying raw image data with no understanding..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers 08 is related to an assignment to build a UINavigationController based app that has multiple UIViewControllers pushed onto the UINavigationController stack. That's how the UINavigationController works. That's logical. However there are some stern.. data. Second see page 10 of the Stanford presentation for an example of how to programmatically push a controller onto the navigation controller. For an example of how to do this visually using Interface Builder take a look at this tutorial..
Tab bar controller inside a navigation controller, or sharing a navigation root view http://stackoverflow.com/questions/576764/tab-bar-controller-inside-a-navigation-controller-or-sharing-a-navigation-root the SDK documentation for pushViewController animated emphasis added viewController The view controller that is pushed onto the stack. It cannot be an instance of tab bar controller. I would like to avoid private APIs and the like but I'm not sure.. It's pretty easy to write a custom XXTabBarController plain subclass of UIViewController that is happy to get pushed onto a nav controller stack but still lives by the view controller philosophy. Each tab on the account specific view Tweets Replies..
CADisplayLink OpenGL rendering breaks UIScrollView behaviour http://stackoverflow.com/questions/5944050/cadisplaylink-opengl-rendering-breaks-uiscrollview-behaviour as follows frameRenderingSemaphore dispatch_semaphore_create 1 This code will only add a new frame rendering action onto the queue if one isn't in the middle of executing. That way the CADisplayLink can fire continuously but it won't overload..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c the event loop completes it will be destroyed. NSString s NSString stringWithString @ Hello World If you want to hang onto that string you'd need to call retain explicitly and then explicitly release it when you're done. Consider the following..
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 phone set to a 24 hour region sets the 12 24 hour switch in settings to 12. Then the above starts tacking AM or PM onto the end of the resulting string. See eg NSDateFormatter am I doing something wrong or is this a bug And see https developer.apple.com..
Save An Image To Application Documents Folder From UIView On IOS http://stackoverflow.com/questions/6821517/save-an-image-to-application-documents-folder-from-uiview-on-ios folder and then be able to retrieve it and place it in another UIImageView for display when the user pushes that view onto the stack. Any help is greatly appreciated iphone uiimageview save share improve this question It's all good man. Don't..
How do I draw a line on the iPhone? http://stackoverflow.com/questions/856354/how-do-i-draw-a-line-on-the-iphone From here you should see a window named Window . Hit Cmd Shift L to bring up the Library and drag a View component onto your window and position it so you can see all of it. With your new View selected hit Cmd 4 to bring up the Identity Inspector..
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