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2014/10/15 ¤U¤È 10:12:58
iphone Programming Glossary: properHow would I tint an image programatically on the iPhone? http://stackoverflow.com/questions/1117211/how-would-i-tint-an-image-programatically-on-the-iphone drawRect is not being called. Final update I found an old project that had an imageView set up properly so I could test Ramin's code and it works like a charm Final final update For those of you just learning.. you'll want to subclass UIImageView and override the drawRect method. Your class needs a UIColor property let's call it overlayColor to hold the blend color and a custom setter that forces a redraw when the.. the image first then overlay it with a rectangle filled with the color you want along with the proper blending mode something like this void drawRect CGRect area CGContextRef context UIGraphicsGetCurrentContext..
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 do nothing else since everything should work magically if you had set auto resizing masks properly. If you didn't adjust your view layouts with proper auto resizing masks or look into Auto Layout if.. magically if you had set auto resizing masks properly. If you didn't adjust your view layouts with proper auto resizing masks or look into Auto Layout if you only want to support iOS 6 going forward. If there..
Resizing UIimages pulled from the Camera also ROTATES the UIimage? http://stackoverflow.com/questions/1260249/resizing-uiimages-pulled-from-the-camera-also-rotates-the-uiimage above code only uses CG functions you're all set. I also have a similar function to resize and do proper aspect fill on images let me know if that's what you're looking for. Note I got the original function..
How to resize a UIPresentationFormSheet? http://stackoverflow.com/questions/2457947/how-to-resize-a-uipresentationformsheet as a UIPresentationFormSheet. The view appears but I can't seem to resize it. My XIB has the proper height width but it seems to get overridden when I call it like this composeTweetController ComposeTweet..
Popover with embedded navigation controller doesn't respect size on back nav http://stackoverflow.com/questions/2752394/popover-with-embedded-navigation-controller-doesnt-respect-size-on-back-nav set the fake size which will be different than one which was set before followed by setting the proper size. This solution will work even if your controller is nested inside the navigation controller and..
iPhone Landscape FAQ and Solutions http://stackoverflow.com/questions/2953351/iphone-landscape-faq-and-solutions of confusion and a set of corresponding set of questions here on SO how iPhone applications with proper handling for Landscape Portrait mode autorotation can be implemented. It is especially difficult to.. explanatory iPhone In landscape only after first addSubview UITableViewController doesn ™t rotate properly Same issue as above. iPhone Landscape Only Utility Template Application Layout errors controller does.. shouldAutorotateToInterfaceOrientation to declare your supported interface orientations. This property will should be checked by the controller infrastructure everytime the device orientation changes...
Objective-c iPhone percent encode a string? http://stackoverflow.com/questions/3423545/objective-c-iphone-percent-encode-a-string characters and the CF function only lets you say which specific characters you want to escape. The proper specification is to escape all characters except a small set. To fix this I created an NSString category.. to escape all characters except a small set. To fix this I created an NSString category method to properly encode a string. It will percent encoding everything EXCEPT a zA Z0 9. _~ and will also encode spaces.. EXCEPT a zA Z0 9. _~ and will also encode spaces as according to this specification . It will also properly handle encoding unicode characters. NSString URLEncodedString_ch NSMutableString output NSMutableString..
Rendering to non-power-of-two texture on iPhone http://stackoverflow.com/questions/4760174/rendering-to-non-power-of-two-texture-on-iphone 0 On these devices you should then be able to use non power of two textures as long as you set the proper texture wrapping glTexParameteri GL_TEXTURE_2D GL_TEXTURE_WRAP_S GL_CLAMP_TO_EDGE glTexParameteri GL_TEXTURE_2D..
iOS UIImagePickerController result image orientation after upload http://stackoverflow.com/questions/5427656/ios-uiimagepickercontroller-result-image-orientation-after-upload the server says otherwise. iphone cocoa touch ios share improve this question A UIImage has a property imageOrientation which instructs the UIImageView and other UIImage consumers to rotate the raw image.. but the program you use to view it is not honoring that flag. To rotate the UIImage to display properly when uploaded you can use a category like this UIImage fixOrientation.h @interface UIImage fixOrientation.. already correct if self.imageOrientation UIImageOrientationUp return self We need to calculate the proper transformation to make the image upright. We do it in 2 steps Rotate if Left Right Down and then flip..
How to distribute ios application wirelessly without managing UDIDs and recompilation http://stackoverflow.com/questions/5546581/how-to-distribute-ios-application-wirelessly-without-managing-udids-and-recompil then with your newly built entry click on Share Select iOS App Store Package .ipa and choose the proper distribution profile you want to use. Click next then choose a location to save the .ipa file to. Before.. your PHP functions you would just insert myappname into the other PHP calls which would pull the proper files from your server. Using this method you don't need to store plist files for any of your apps as..
OpenGL Texture Coordinates in Pixel Space http://stackoverflow.com/questions/5879403/opengl-texture-coordinates-in-pixel-space 2 1 2 8 1 8 2 8 2 3 2 8 ... 7 8 8 8 2 15 2 8 Or more generally for pixel i in a N wide texture the proper texture coordinate is 2i 1 2N However if you want to perfectly align your texture with the screen pixels..
http://stackoverflow.com/questions/8088473/url-encode-an-nsstring Objective c iPhone percent encode a string Objective C url encoding http cybersam.com programming proper url percent encoding in ios https devforums.apple.com message 15674#15674 http simonwoodside.com weblog..
How would I tint an image programatically on the iPhone? http://stackoverflow.com/questions/1117211/how-would-i-tint-an-image-programatically-on-the-iphone in IB and calling setNeedsDisplay in my view controller. Update drawRect is not being called. Final update I found an old project that had an imageView set up properly so I could test Ramin's code and it works like a charm Final final update For those of you just learning about Core Graphics here is the simplest thing that could.. touch image processing share improve this question First you'll want to subclass UIImageView and override the drawRect method. Your class needs a UIColor property let's call it overlayColor to hold the blend color and a custom setter that forces a redraw when the color changes. Something like this void setOverlayColor UIColor.. time color changes In the drawRect method you'll want to draw the image first then overlay it with a rectangle filled with the color you want along with the proper blending mode something like this void drawRect CGRect area CGContextRef context UIGraphicsGetCurrentContext CGContextSaveGState context Draw picture first CGContextDrawImage..
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 with black margins on top and bottom . Test your app and hopefully do nothing else since everything should work magically if you had set auto resizing masks properly. If you didn't adjust your view layouts with proper auto resizing masks or look into Auto Layout if you only want to support iOS 6 going forward. If there is.. and hopefully do nothing else since everything should work magically if you had set auto resizing masks properly. If you didn't adjust your view layouts with proper auto resizing masks or look into Auto Layout if you only want to support iOS 6 going forward. If there is something you have to do for the larger screen specifically..
Resizing UIimages pulled from the Camera also ROTATES the UIimage? http://stackoverflow.com/questions/1260249/resizing-uiimages-pulled-from-the-camera-also-rotates-the-uiimage since you're using UIGraphicsBeginImageContext . Since the above code only uses CG functions you're all set. I also have a similar function to resize and do proper aspect fill on images let me know if that's what you're looking for. Note I got the original function from this post and did some modifications to make it work..
How to resize a UIPresentationFormSheet? http://stackoverflow.com/questions/2457947/how-to-resize-a-uipresentationformsheet I am trying to display a modal view controller as a UIPresentationFormSheet. The view appears but I can't seem to resize it. My XIB has the proper height width but it seems to get overridden when I call it like this composeTweetController ComposeTweet alloc initWithNibName @ ComposeTweet bundle nil composeTweetController.modalPresentationStyle..
Popover with embedded navigation controller doesn't respect size on back nav http://stackoverflow.com/questions/2752394/popover-with-embedded-navigation-controller-doesnt-respect-size-on-back-nav will not change the size. For this to happen you can firstly set the fake size which will be different than one which was set before followed by setting the proper size. This solution will work even if your controller is nested inside the navigation controller and popover will change its size accordingly when you will navigate..
iPhone Landscape FAQ and Solutions http://stackoverflow.com/questions/2953351/iphone-landscape-faq-and-solutions Landscape FAQ and Solutions There has been a lot of confusion and a set of corresponding set of questions here on SO how iPhone applications with proper handling for Landscape Portrait mode autorotation can be implemented. It is especially difficult to implement such an application when starting in landscape mode.. switching to Portraite mode on loading new controller Self explanatory iPhone In landscape only after first addSubview UITableViewController doesn ™t rotate properly Same issue as above. iPhone Landscape Only Utility Template Application Layout errors controller does not seem to recognize the view should be rotated but displays.. What's in the documentation In your view controller override shouldAutorotateToInterfaceOrientation to declare your supported interface orientations. This property will should be checked by the controller infrastructure everytime the device orientation changes. BOOL shouldAutorotateToInterfaceOrientation UIInterfaceOrientation..
Objective-c iPhone percent encode a string? http://stackoverflow.com/questions/3423545/objective-c-iphone-percent-encode-a-string are inadequate. The NSString method misses quite a few characters and the CF function only lets you say which specific characters you want to escape. The proper specification is to escape all characters except a small set. To fix this I created an NSString category method to properly encode a string. It will percent encoding.. characters you want to escape. The proper specification is to escape all characters except a small set. To fix this I created an NSString category method to properly encode a string. It will percent encoding everything EXCEPT a zA Z0 9. _~ and will also encode spaces as according to this specification . It will also properly.. encode a string. It will percent encoding everything EXCEPT a zA Z0 9. _~ and will also encode spaces as according to this specification . It will also properly handle encoding unicode characters. NSString URLEncodedString_ch NSMutableString output NSMutableString string const unsigned char source const unsigned char..
Rendering to non-power-of-two texture on iPhone http://stackoverflow.com/questions/4760174/rendering-to-non-power-of-two-texture-on-iphone npot strstr extensions GL_APPLE_texture_2D_limited_npot 0 On these devices you should then be able to use non power of two textures as long as you set the proper texture wrapping glTexParameteri GL_TEXTURE_2D GL_TEXTURE_WRAP_S GL_CLAMP_TO_EDGE glTexParameteri GL_TEXTURE_2D GL_TEXTURE_WRAP_T GL_CLAMP_TO_EDGE Unfortunately..
iOS UIImagePickerController result image orientation after upload http://stackoverflow.com/questions/5427656/ios-uiimagepickercontroller-result-image-orientation-after-upload directly after taking the picture but viewing on the server says otherwise. iphone cocoa touch ios share improve this question A UIImage has a property imageOrientation which instructs the UIImageView and other UIImage consumers to rotate the raw image data. There's a good chance that this flag is being saved.. flag is being saved to the exif data in the uploaded jpeg image but the program you use to view it is not honoring that flag. To rotate the UIImage to display properly when uploaded you can use a category like this UIImage fixOrientation.h @interface UIImage fixOrientation UIImage fixOrientation @end UIImage fixOrientation.m.. UIImage fixOrientation No op if the orientation is already correct if self.imageOrientation UIImageOrientationUp return self We need to calculate the proper transformation to make the image upright. We do it in 2 steps Rotate if Left Right Down and then flip if Mirrored. CGAffineTransform transform CGAffineTransformIdentity..
How to distribute ios application wirelessly without managing UDIDs and recompilation http://stackoverflow.com/questions/5546581/how-to-distribute-ios-application-wirelessly-without-managing-udids-and-recompil the correct Code signing profiles. Now go to Product archive then with your newly built entry click on Share Select iOS App Store Package .ipa and choose the proper distribution profile you want to use. Click next then choose a location to save the .ipa file to. Before you click Save you need to check Save for Enterprise Distribution.. url http mycompany.com php installApp.php app myappname In your PHP functions you would just insert myappname into the other PHP calls which would pull the proper files from your server. Using this method you don't need to store plist files for any of your apps as they are generated which makes updating your apps easier since..
OpenGL Texture Coordinates in Pixel Space http://stackoverflow.com/questions/5879403/opengl-texture-coordinates-in-pixel-space So you're interested in the texture coordinates 0 8 1 8 2 1 2 8 1 8 2 8 2 3 2 8 ... 7 8 8 8 2 15 2 8 Or more generally for pixel i in a N wide texture the proper texture coordinate is 2i 1 2N However if you want to perfectly align your texture with the screen pixels remember that what you specify as coordinates are not a..
http://stackoverflow.com/questions/8088473/url-encode-an-nsstring kCFStringEncodingUTF8 Some good reading about the subject Objective c iPhone percent encode a string Objective C url encoding http cybersam.com programming proper url percent encoding in ios https devforums.apple.com message 15674#15674 http simonwoodside.com weblog 2009 4 22 how_to_really_url_encode share improve this..
How would I tint an image programatically on the iPhone? http://stackoverflow.com/questions/1117211/how-would-i-tint-an-image-programatically-on-the-iphone view controller. Update drawRect is not being called. Final update I found an old project that had an imageView set up properly so I could test Ramin's code and it works like a charm Final final update For those of you just learning about Core Graphics.. this question First you'll want to subclass UIImageView and override the drawRect method. Your class needs a UIColor property let's call it overlayColor to hold the blend color and a custom setter that forces a redraw when the color changes. Something.. you'll want to draw the image first then overlay it with a rectangle filled with the color you want along with the proper blending mode something like this void drawRect CGRect area CGContextRef context UIGraphicsGetCurrentContext CGContextSaveGState..
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 Test your app and hopefully do nothing else since everything should work magically if you had set auto resizing masks properly. If you didn't adjust your view layouts with proper auto resizing masks or look into Auto Layout if you only want to support.. should work magically if you had set auto resizing masks properly. If you didn't adjust your view layouts with proper auto resizing masks or look into Auto Layout if you only want to support iOS 6 going forward. If there is something you..
Resizing UIimages pulled from the Camera also ROTATES the UIimage? http://stackoverflow.com/questions/1260249/resizing-uiimages-pulled-from-the-camera-also-rotates-the-uiimage . Since the above code only uses CG functions you're all set. I also have a similar function to resize and do proper aspect fill on images let me know if that's what you're looking for. Note I got the original function from this post and..
UIViewController. viewDidLoad vs. viewWillAppear: What is the proper division of labor? http://stackoverflow.com/questions/1579550/uiviewcontroller-viewdidload-vs-viewwillappear-what-is-the-proper-division-of viewDidLoad vs. viewWillAppear What is the proper division of labor I have always been a bit unclear on the type of tasks that should be assigned to viewDidLoad vs. viewWillAppear..
How to resize a UIPresentationFormSheet? http://stackoverflow.com/questions/2457947/how-to-resize-a-uipresentationformsheet a modal view controller as a UIPresentationFormSheet. The view appears but I can't seem to resize it. My XIB has the proper height width but it seems to get overridden when I call it like this composeTweetController ComposeTweet alloc initWithNibName..
Showing login view controller before main tab bar controller http://stackoverflow.com/questions/2716755/showing-login-view-controller-before-main-tab-bar-controller NSObject UIApplicationDelegate LoginViewControllerDelegate UIWindow window UITabBarController tabBarController @property nonatomic retain IBOutlet UIWindow window @property nonatomic retain IBOutlet UITabBarController tabBarController @end.. UIWindow window UITabBarController tabBarController @property nonatomic retain IBOutlet UIWindow window @property nonatomic retain IBOutlet UITabBarController tabBarController @end AppDelegate.m @implementation AppDelegate_Pad @synthesize.. @interface LoginViewController_Pad UIViewController id LoginViewControllerDelegate delegate @property nonatomic assign id LoginViewControllerDelegate delegate IBAction buttonPressed @end @protocol LoginViewControllerDelegate..
Popover with embedded navigation controller doesn't respect size on back nav http://stackoverflow.com/questions/2752394/popover-with-embedded-navigation-controller-doesnt-respect-size-on-back-nav happen you can firstly set the fake size which will be different than one which was set before followed by setting the proper size. This solution will work even if your controller is nested inside the navigation controller and popover will change..
iPhone Landscape FAQ and Solutions http://stackoverflow.com/questions/2953351/iphone-landscape-faq-and-solutions There has been a lot of confusion and a set of corresponding set of questions here on SO how iPhone applications with proper handling for Landscape Portrait mode autorotation can be implemented. It is especially difficult to implement such an application.. new controller Self explanatory iPhone In landscape only after first addSubview UITableViewController doesn ™t rotate properly Same issue as above. iPhone Landscape Only Utility Template Application Layout errors controller does not seem to recognize.. view controller override shouldAutorotateToInterfaceOrientation to declare your supported interface orientations. This property will should be checked by the controller infrastructure everytime the device orientation changes. BOOL shouldAutorotateToInterfaceOrientation..
Objective-c iPhone percent encode a string? http://stackoverflow.com/questions/3423545/objective-c-iphone-percent-encode-a-string misses quite a few characters and the CF function only lets you say which specific characters you want to escape. The proper specification is to escape all characters except a small set. To fix this I created an NSString category method to properly.. specification is to escape all characters except a small set. To fix this I created an NSString category method to properly encode a string. It will percent encoding everything EXCEPT a zA Z0 9. _~ and will also encode spaces as according to.. encoding everything EXCEPT a zA Z0 9. _~ and will also encode spaces as according to this specification . It will also properly handle encoding unicode characters. NSString URLEncodedString_ch NSMutableString output NSMutableString string const unsigned..
Rendering to non-power-of-two texture on iPhone http://stackoverflow.com/questions/4760174/rendering-to-non-power-of-two-texture-on-iphone 0 On these devices you should then be able to use non power of two textures as long as you set the proper texture wrapping glTexParameteri GL_TEXTURE_2D GL_TEXTURE_WRAP_S GL_CLAMP_TO_EDGE glTexParameteri GL_TEXTURE_2D GL_TEXTURE_WRAP_T..
iPhone Codesign object file format invalid or unsuitable http://stackoverflow.com/questions/4842717/iphone-codesign-object-file-format-invalid-or-unsuitable my target in xcode. so i created a new one with the exact same name. in the target settings i again selected the proper codesigning identity but now i can't compile for the device anymore. as soon as i want to build i get CodeSign build Release..
Save Youtube video to iPhone in the app http://stackoverflow.com/questions/5087249/save-youtube-video-to-iphone-in-the-app error of course. In the connection didReceiveResponse delegate method read out the length of data to be downloaded for proper updating of the progress bar. In the connection didReceiveData delegate method write the data to the output stream file..
iOS UIImagePickerController result image orientation after upload http://stackoverflow.com/questions/5427656/ios-uiimagepickercontroller-result-image-orientation-after-upload but viewing on the server says otherwise. iphone cocoa touch ios share improve this question A UIImage has a property imageOrientation which instructs the UIImageView and other UIImage consumers to rotate the raw image data. There's a good.. the uploaded jpeg image but the program you use to view it is not honoring that flag. To rotate the UIImage to display properly when uploaded you can use a category like this UIImage fixOrientation.h @interface UIImage fixOrientation UIImage fixOrientation.. the orientation is already correct if self.imageOrientation UIImageOrientationUp return self We need to calculate the proper transformation to make the image upright. We do it in 2 steps Rotate if Left Right Down and then flip if Mirrored. CGAffineTransform..
How to distribute ios application wirelessly without managing UDIDs and recompilation http://stackoverflow.com/questions/5546581/how-to-distribute-ios-application-wirelessly-without-managing-udids-and-recompil go to Product archive then with your newly built entry click on Share Select iOS App Store Package .ipa and choose the proper distribution profile you want to use. Click next then choose a location to save the .ipa file to. Before you click Save.. app myappname In your PHP functions you would just insert myappname into the other PHP calls which would pull the proper files from your server. Using this method you don't need to store plist files for any of your apps as they are generated..
OpenGL Texture Coordinates in Pixel Space http://stackoverflow.com/questions/5879403/opengl-texture-coordinates-in-pixel-space coordinates 0 8 1 8 2 1 2 8 1 8 2 8 2 3 2 8 ... 7 8 8 8 2 15 2 8 Or more generally for pixel i in a N wide texture the proper texture coordinate is 2i 1 2N However if you want to perfectly align your texture with the screen pixels remember that what..
Is it possible to reference a variable with a string and an int? http://stackoverflow.com/questions/6049175/is-it-possible-to-reference-a-variable-with-a-string-and-an-int improve this question This is an anti pattern I call the Poor Man's Array. The better way to do this is to use a proper collection like an array instead of a bunch of variables that are secretly related. Done right the code with an array will..
http://stackoverflow.com/questions/7010547/uitextfield-text-change-event return YES iphone objective c ios event handling uitextfielddelegate share improve this question From proper way do uitextfield text change call back I catch the characters sent to a UITextField control something like this Add a..
http://stackoverflow.com/questions/8088473/url-encode-an-nsstring about the subject Objective c iPhone percent encode a string Objective C url encoding http cybersam.com programming proper url percent encoding in ios https devforums.apple.com message 15674#15674 http simonwoodside.com weblog 2009 4 22 how_to_really_url_encode..
Proper way to renew distribution certificate for iOS http://stackoverflow.com/questions/10759973/proper-way-to-renew-distribution-certificate-for-ios way to renew distribution certificate for iOS My distribution certificate is expiring on June 7th along with all of my..
iOS 7: Proper iPad icons for iPhone app? http://stackoverflow.com/questions/19312080/ios-7-proper-ipad-icons-for-iphone-app 7 Proper iPad icons for iPhone app We have an app for iPhone only but often users install it on their iPads. With iOS7 and the asset..
Proper AVAudioRecorder Settings for Recording Voice? http://stackoverflow.com/questions/2149280/proper-avaudiorecorder-settings-for-recording-voice AVAudioRecorder Settings for Recording Voice I am adding a voice memo capability using AVAudioRecorder and I need to know..
Proper use of UIApplicationMain http://stackoverflow.com/questions/2916566/proper-use-of-uiapplicationmain use of UIApplicationMain I have decided to load my views programmatically so putting int ret UIApplicationMain argc argv..
Proper way to exit iPhone application? http://stackoverflow.com/questions/355168/proper-way-to-exit-iphone-application way to exit iPhone application I am programming an iPhone app and I need to force it to exit due to certain user actions...
Proper way to instantiate an NSDecimalNumber from float or double http://stackoverflow.com/questions/5304855/proper-way-to-instantiate-an-nsdecimalnumber-from-float-or-double way to instantiate an NSDecimalNumber from float or double I'm looking for the best way to instantiate an NSDecimalNumber..
http://stackoverflow.com/questions/8453653/proper-usage-of-transitionfromviewcontrollertoviewcontrollerdurationoptionsa usage of transitionFromViewController toViewController duration options animations completion I can't seem to find a good..
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