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2014/10/15 ¤U¤È 10:13:39
iphone Programming Glossary: scenesiPhone board game: OpenGL ES or CoreGraphics? [closed] http://stackoverflow.com/questions/1082511/iphone-board-game-opengl-es-or-coregraphics those layers or views around. UIViews aren't too much heavier than CALayers and they use Core Animation behind the scenes to do simple movement scaling or fading animations. They can also respond to touch events. CALayers are useful if you want..
http://stackoverflow.com/questions/12416050/xcode-4-5-storyboard-exit mention on XCode 4.5 new features list that states Unwind segues can allow transitioning to existing instances of scenes in a storyboard The good news is that there is a session from WWDC 2012 explaining those creatures among other things ...
How can I encrypt CoreData contents on an iPhone http://stackoverflow.com/questions/1645007/how-can-i-encrypt-coredata-contents-on-an-iphone
Disadvantage of using NSMutableArray vs NSArray? http://stackoverflow.com/questions/1746204/disadvantage-of-using-nsmutablearray-vs-nsarray method and adding objects to it until full so it allocates all the memory at once if it can. Behind the scenes they're secretly the same thing NSArray and NSMutableArray are both implemented with CFArray s via toll free bridging a..
CGImage/UIImage lazily loading on UI thread causes stutter http://stackoverflow.com/questions/1815476/cgimage-uiimage-lazily-loading-on-ui-thread-causes-stutter method is unreliable. It causes intermittent EXC_BAD_ACCESS. I have no idea what UIImage is actually doing behind the scenes. Perhaps it is decompressing the JPEG data. Anyway the method is void forceLazyLoadOfImage UIImage image CGImageRef imgRef..
calling [myString release] does NOT decrement [myString retainCount] http://stackoverflow.com/questions/3213647/calling-mystring-release-does-not-decrement-mystring-retaincount humans it's not an accurate measure of object ownership. You don't know what's calling retain and release behind the scenes in a framework. Memory management in Cocoa is simple If you alloc init or copy an object make sure you call release on it..
problem with “this class is not key value coding-compliant” http://stackoverflow.com/questions/3760803/problem-with-this-class-is-not-key-value-coding-compliant owner in IB but then when loading the nib the owner is nil. I'd guess that when loading with a nil owner behind the scenes an NSObject is used which is why you're getting the key value error. My previous advice to pass the cell as the owner would..
dealloc, use release or set to nil for properties? http://stackoverflow.com/questions/4124049/dealloc-use-release-or-set-to-nil-for-properties you are not using the @synthesize keyword. When you set the properties to nil they are being released behind the scenes by the setter. Now there may be a slight performance increase over the fist version because not so much needs to happen.. Now there may be a slight performance increase over the fist version because not so much needs to happen behind the scenes e.g. pointer comparison and everything else apple hides behind the scenes . I always use version 001 because it is more.. not so much needs to happen behind the scenes e.g. pointer comparison and everything else apple hides behind the scenes . I always use version 001 because it is more to the point and future developers don't have to dig though my code to figure..
How to reuse/recycle custom element like uitableviewcell does? http://stackoverflow.com/questions/4914427/how-to-reuse-recycle-custom-element-like-uitableviewcell-does numberOfPages pageWidth view release Edit Some insight into how tableview and its cells achieve this behind the scenes would be useful. iphone objective c uiscrollview reusability share improve this question Yes you should restore each..
Can somebody explain the process of a UIViewController birth (which method follows which)? http://stackoverflow.com/questions/5107604/can-somebody-explain-the-process-of-a-uiviewcontroller-birth-which-method-follo Any detailed explaination iphone uiviewcontroller share improve this question There is a lot going on behind the scenes with Cocoa view and viewController management . 1. The viewController object At its most basic a viewController is a generic.. care of the memory management for you. Things get a little more tricky with nib files since so much happens behind the scenes. The awakeFromNib method is called for every object that is instantiated when a nib file is loaded and there is no guarantee..
Why should I use @properties? [duplicate] http://stackoverflow.com/questions/5602968/why-should-i-use-properties
iPhone SDK: what is the difference between loadView and viewDidLoad? http://stackoverflow.com/questions/573958/iphone-sdk-what-is-the-difference-between-loadview-and-viewdidload
Tutorial on NOT using Interface Builder for iPhone GUI design? http://stackoverflow.com/questions/616456/tutorial-on-not-using-interface-builder-for-iphone-gui-design and not Interface Builder I am new to iPhone development and I wanted to better understand what is going on behind the scenes. iphone user interface interface builder share improve this question Check out the UI Catalog example in the SDK. It..
iPhone indoor location based app http://stackoverflow.com/questions/6945780/iphone-indoor-location-based-app of the AMNH Explorer app you're referencing. Explorer uses the Cisco Mobility Services Engine MSE behind the scenes to determine its location. This is part of their Cisco wifi installation. The network itself listens for devices in the..
MPMoviePlayerController alternatives on iPhone? http://stackoverflow.com/questions/780999/mpmovieplayercontroller-alternatives-on-iphone possible roll your own solution would be to use openGL as a compositing surface for the video and obtain a behind the scenes library like ffmpeg if you need to process specific video types. NeHe has an example of rendering AVI's to openGL http nehe.gamedev.net..
What are the benefits of using Storyboards instead of xib files in iOS programming? http://stackoverflow.com/questions/9083759/what-are-the-benefits-of-using-storyboards-instead-of-xib-files-in-ios-programmi Scenes View Controllers Nav Controllers TabBar Controllers etc A manager of connections and transitions between these scenes these are called Segues A nice way to manage how different controllers talk to each other Storyboards give you a complete..
Converting a UIImage black'n white and not grayscale for using tesseract http://stackoverflow.com/questions/9992078/converting-a-uiimage-blackn-white-and-not-grayscale-for-using-tesseract My GPUImage framework encapsulates this so that you don't need to worry about the more technical aspects behind the scenes. Using GPUImage you could obtain a thresholded version of your UIImage using a GPUImageLuminanceThresholdFilter and code..
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