2014/10/15 下午 10:14:40

iphone Programming Glossary: swapping

http://stackoverflow.com/questions/1020944/convert-png-to-pvrtc-on-the-iphone

not during development using the standard tools on OS X . I have a number of .png textures in my application but swapping is an issue. I'd like to create PVRTC variants of the .pngs on the device should the available memory be low on application..

What happens if I don't retain IBOutlet?

http://stackoverflow.com/questions/1250518/what-happens-if-i-dont-retain-iboutlet

to release it explicitly. While these two actions are functionally equivalent the intent is different. If instead of swapping out the text field you chose to remove it from the view you might have already removed it from the view hierarchy and set..

UIStringDrawing methods don't seem to be thread safe in iOS 6

http://stackoverflow.com/questions/12744558/uistringdrawing-methods-dont-seem-to-be-thread-safe-in-ios-6

around I noticed that iOS 6 introduces much more widespread integration of NSAttributedString and Core Text so I tried swapping all UIStringDrawing methods with the equivalent NSStringDrawing methods using NSAttributedString in place of NSString and..

iOS 6 shouldAutorotate: is NOT being called

http://stackoverflow.com/questions/12775265/ios-6-shouldautorotate-is-not-being-called

method gets called just fine. The shouldAutorotate method however will not fire. I need to do some image swapping on rotate but I can't get any indication that a rotation is about to occur. Thanks in advance. iphone ios cocoa touch rotation..

Keeping a UIButton selected after a touch

http://stackoverflow.com/questions/1785008/keeping-a-uibutton-selected-after-a-touch

my network op finishes but it doesn't seem to do anything. Same thing if I call setHighlighted . I suppose I could try swapping out the background image to denote a selected state for the duration of the network op but that seems like a hack. Any better..

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

like to support device rotation in certain views but other don't particularly make sense in Landscape mode so as I swapping the views out I would like to force the rotation to be set to portrait. There is an undocumented property setter on UIDevice..

UISegmentedControl Best Practice

http://stackoverflow.com/questions/2118358/uisegmentedcontrol-best-practice

share improve this question I'd go with the second option you mention creating the subviews in IB and swapping them in and out of a main view. This would be a good opportunity to use UIViewController unsubclassed in your initial setup..

Removing and adding persistent stores to a core data application

http://stackoverflow.com/questions/2257557/removing-and-adding-persistent-stores-to-a-core-data-application

I agree with Louis what you are doing is a dangerous design and you should be rebuilding the entire stack instead of swapping out the stores like that. Rebuilding the full stack is not a huge overhead. Also if you are using completely different models..

Apple gyroscope sample code

http://stackoverflow.com/questions/3245733/apple-gyroscope-sample-code

do with that you may have to invert it which is very easy. The inverse of a rotation is just its transpose which means swapping the columns and rows. So the above becomes rotMatrix 0 rot.m11 rotMatrix 4 rot.m21 rotMatrix 8 rot.m31 rotMatrix 12 0 rotMatrix..

Xcode suddenly very slow

http://stackoverflow.com/questions/3929718/xcode-suddenly-very-slow

the HDD. Is it constantly being accessed If so it would indicate several possible things memory shortage and lots of swapping hard drive free space shortage cause it to hunt for space heavy fragementation etc. If thats not it perhaps Xcode is running..

Using Retina images in a local UIWebView

http://stackoverflow.com/questions/4031537/using-retina-images-in-a-local-uiwebview

how to get around this kind of issue I have seen a few Javascript solutions like this but they seem to just be image swapping which is what I have already done above so it should work no Finally in the HTML files here is the way I am referring to..

Method for animating images (like a movie) on iPhone without using MPMoviePlayer

http://stackoverflow.com/questions/442076/method-for-animating-images-like-a-movie-on-iphone-without-using-mpmovieplayer

with imageLayers objectAtIndex newImageIndex CATransaction commit You might also be able to get away with swapping in and out the CGImageRef in the contents of your main layer if your frame display time is short enough. share improve..

How to swap views using a swipe gesture XCode

http://stackoverflow.com/questions/5684099/how-to-swap-views-using-a-swipe-gesture-xcode

second2 animated YES second2 release Then just make sure you import the otherViewController you are swapping to using #import SecondViewController at the top of your main file. Hope this helps. End Edit iphone cocoa touch xcode..

Create layer mask with custom-shaped hole

http://stackoverflow.com/questions/5721196/create-layer-mask-with-custom-shaped-hole

is simply not working I have no idea why . I've even tried masking masks to see if that would work. I've also tried swapping colors around...from white to black to clear for fill and background. A simple solution if it existed would be to invert..

Performing iPhone optimization on externally downloaded PNGs

http://stackoverflow.com/questions/640909/performing-iphone-optimization-on-externally-downloaded-pngs

PNG. The only difference is that the embedded one was optimized by 'pngcrush' during compilation. This does some byte swapping from RGBA to BRGA and pre multiplication of alpha. http iphonedevelopment.blogspot.com 2008 10 iphone optimized pngs.html..

Permutations/Anagrams in Objective-C — I am missing something

http://stackoverflow.com/questions/6617253/permutations-anagrams-in-objective-c-i-am-missing-something

0 pos2 size swap them NSInteger tmp perm pos1 perm pos1 perm pos2 perm pos2 tmp now reverse the elements in between by swapping the ends for pos1 pos2 size pos1 pos2 pos1 pos2 assert pos1 0 pos1 size assert pos2 0 pos2 size tmp perm pos1 perm pos1..

Need some help understanding transient properties in Core Data

http://stackoverflow.com/questions/7504391/need-some-help-understanding-transient-properties-in-core-data

modeled property causes the fault to fire and the object becomes fully active. Core Data does a great deal of object swapping behind the scenes that you can't control and shouldn't worry about . In short don't worry about unmodeled properties and..

Objective-C: _variable

http://stackoverflow.com/questions/8545363/objective-c-variable

like so _pages NSArray alloc init but then Apple has this again not exactly like this but it appears as if they keep swapping randomly self.pages NSKeyedUnarchiver unarchiveObjectWithData contents And finally _pages release Which totally confuses..

How to capture current view screenshot and reuse in code? (iPhone SDK)

http://stackoverflow.com/questions/879064/how-to-capture-current-view-screenshot-and-reuse-in-code-iphone-sdk

by UIKit rotating the currently displayed view is inappropriate conceptually. Simply disabling the animation and swapping the views suddenly is tolerable but is far below the polish I'm building into the rest of the app. What I would prefer to..

Best practices for handling user preferences in an iPhone MVC app?

http://stackoverflow.com/questions/962591/best-practices-for-handling-user-preferences-in-an-iphone-mvc-app

the app logic. For the options I have an OptionsView and an OptionsViewController. A RootViewController handles swapping of the Main and Options views. First of all what about the options data Would I want to make an NSOjbect derived class to..