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2014/10/15 ¤U¤È 10:13:24
iphone Programming Glossary: resultinghttp://stackoverflow.com/questions/10329291/play-a-short-sound-in-ios to be released unless you are using ARC . If you call AudioServicesCreateSystemSoundID you have to dispose of the resulting sound. See the Audio UI Sounds example. Basically @interface MyClass NSObject SystemSoundID mySound @implementation MyClass..
iOS Image Orientation has Strange Behavior http://stackoverflow.com/questions/10600613/ios-image-orientation-has-strange-behavior note when loading images from the internet as opposed to images taken with a camera the imageOrientation is always 0 resulting in perfect behavior . For some reason my save code seems to wipe away this imageOrientation flag. I was hoping to just steal..
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 communication into viewDidLoad or viewWillAppear they will be executed before the user gets to see the view possibly resulting a short freeze of your app. It may be good idea to first show the user an unpopulated view with an activity indicator of..
Create XML file dynamically in Iphone http://stackoverflow.com/questions/1825605/create-xml-file-dynamically-in-iphone writeStartElement @ Root xmlWriter writeCharacters @ Text content for root element xmlWriter writeEndElement get the resulting XML string NSString xml xmlWriter toString This produces the following XML string Root Text content for root element Root..
How do I create/render a UIImage from a 3D transformed UIImageView? http://stackoverflow.com/questions/1949003/how-do-i-create-render-a-uiimage-from-a-3d-transformed-uiimageview a UIImage from a 3D transformed UIImageView After applying a 3d transform to an UIImageView.layer I need to save the resulting view as a new UIImage... Seemed like a simple task at first but no luck so far and searching hasn't turned up any clues..
Objective-C categories in static library http://stackoverflow.com/questions/2567498/objective-c-categories-in-static-library the object code of the core class implementation and the category implementation. This prevents objects created in the resulting application from responding to a selector that is defined in the category. And their solution To resolve this issue the..
UIImage resize (Scale proportion) [duplicate] http://stackoverflow.com/questions/2645768/uiimage-resize-scale-proportion The following piece of code is resizing the image perfectly but the problem is that it messes up the aspect ratio resulting in a skewed image . Any pointers Change image resolution auto resize to fit UIImage scaleImage UIImage image toResolution..
How to make a chat system on iPhone? http://stackoverflow.com/questions/3380851/how-to-make-a-chat-system-on-iphone the server whenever there is some new content to pay attention to If having to poll all the time I worry about the resulting lag as each participant will have to wait longer for others before they can post their own responses to others. And potentially..
http://stackoverflow.com/questions/4097044/pdf-search-on-the-iphone But then how to highlight the result I know there are a few operators to find the glyph sizes so I could calculate the resulting rect based on those values but I've been reading the spec for hours... it's a bloated mess and I'm going insane. Anyone..
NSDateFormatter dateFromString returns nil http://stackoverflow.com/questions/4258266/nsdateformatter-datefromstring-returns-nil the western world. If you did not explicitly set the locale the date formatter might be able to parse the date but the resulting NSDate would represent a whole other point in time. The locale identifier @ en_US_POSIX is meant for this purpose. It is..
iOS SDK - Programmatically generate a PDF file http://stackoverflow.com/questions/4362734/ios-sdk-programmatically-generate-a-pdf-file console that look like this Error can't get CIDs for glyphs for 'TimesNewRomanPSMT' The tricky aspect is that the resulting PDF will render fine in some PDF readers but fail to render in other places. So if you have control over the software that..
http://stackoverflow.com/questions/459833/which-open-source-licenses-are-compatible-with-the-apples-iphone-and-its-offici payments to deploy is in conflict with the LGPL. Distribution of Object Files You must ensure that the terms of the resulting executable allow the recipient to make changes to the LGPL code and produce a new working bits of code out of it. This in..
Get RGB value from UIColor presets http://stackoverflow.com/questions/4700168/get-rgb-value-from-uicolor-presets bitmap context in an RGB color space and draw into it with your color. You can then read out the RGB values from the resulting bitmap. Note that this won't work for certain colors like pattern colors eg. UIColor groupTableViewBackgroundColor which.. CGFloat 3 components forColor UIColor color CGColorSpaceRef rgbColorSpace CGColorSpaceCreateDeviceRGB unsigned char resultingPixel 4 CGContextRef context CGBitmapContextCreate resultingPixel 1 1 8 4 rgbColorSpace kCGImageAlphaNoneSkipLast.. rgbColorSpace CGColorSpaceCreateDeviceRGB unsigned char resultingPixel 4 CGContextRef context CGBitmapContextCreate resultingPixel 1 1 8 4 rgbColorSpace kCGImageAlphaNoneSkipLast CGContextSetFillColorWithColor context color CGColor..
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 And see https developer.apple.com library ios..
http://stackoverflow.com/questions/6896029/re-sign-ipa-iphone Payload appname o project_dir app resigned.ipa sign provisioning_profile embed mobileprovision I've looked in the resulting ipa file and it seems to be very similar to the original app. What files should really change here I initially thought the..
How to write text on image in objective-c iPhone? http://stackoverflow.com/questions/6992830/how-to-write-text-on-image-in-objective-c-iphone or any suggestion for it. iphone uiimageview share improve this question Draw text inside an image and return the resulting image UIImage drawText NSString text inImage UIImage image atPoint CGPoint point UIFont font UIFont boldSystemFontOfSize..
Objective-C: Asynchronously populate UITableView - how to do this? http://stackoverflow.com/questions/7491517/objective-c-asynchronously-populate-uitableview-how-to-do-this And done. A few more lines of code for you to write but it replaces 13K lines of code that gets imported with ASI resulting in a smaller leaner faster application. And more importantly it is an app that you understand every single line of code..
How to change a particular color in an image? http://stackoverflow.com/questions/8046643/how-to-change-a-particular-color-in-an-image cvBlobsLib . This will get rid of dots of the similar color in the scene. Mask the color with cvInRangeS and use the resulting mask to apply the new hue. cvMerge the new image with the new hue with an image composed by the saturation and brightness..
Why is object not dealloc'ed when using ARC + NSZombieEnabled http://stackoverflow.com/questions/8408071/why-is-object-not-dealloced-when-using-arc-nszombieenabled This caused problems in my app b c NSNotificationCenter continues to send notifications to ActionsController and the resulting handlers cause the app to crash. I created a simple app illustrating this at https github.com xjones XJARCTestApp . Look..
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