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2014/10/15 ¤U¤È 10:13:15
iphone Programming Glossary: relyHow to detect iPhone 5 (widescreen devices)? http://stackoverflow.com/questions/12446990/how-to-detect-iphone-5-widescreen-devices 6 is now out check the new AutoLayout capabilities. That said if you really need to detect the iPhone 5 you can simply rely on the screen size . UIScreen mainScreen bounds .size.height The iPhone 5's screen has a height of 568. You can imagine..
iOS 6 - viewDidUnload migrate to didReceiveMemoryWarning? http://stackoverflow.com/questions/12674268/ios-6-viewdidunload-migrate-to-didreceivememorywarning already had it there already. Finally if you free anything in didReceiveMemoryWarning just make sure your code doesn't rely upon them being recreated in viewDidLoad again when you pop back because that will not be called since the view itself was..
Multiple annotation callouts displaying in MKMapView http://stackoverflow.com/questions/2417952/multiple-annotation-callouts-displaying-in-mkmapview on several MKAnnotationView instances to see what it gives THE CLEAN WAY I WOULD DO IT not tested myself however don't rely on the selection mechanism of the MKMapView subclass the MKAnnotationView to implement a custom one do the customization..
NSURLRequest cannot handle HTTP body when method is not POST? http://stackoverflow.com/questions/3469061/nsurlrequest-cannot-handle-http-body-when-method-is-not-post and it can definitely do PUT requests since they use a lower level set of code to create the HTTP messages and don't rely on the NSMutableUrlRequest . Also I found another blog post talking about the issue and what you need to put for a PUT request...
display image from URL retrieved from ALAsset in iPhone http://stackoverflow.com/questions/3837115/display-image-from-url-retrieved-from-alasset-in-iphone iOS 5 update When the result block fires seems to be a bit slower with iOS5 maybe single core devices so I couldnt rely on the image to be available directly after calling findLargeImage . So I changed it to call out to a delegate. @protocol..
Getting displacement from accelerometer data with Core Motion http://stackoverflow.com/questions/4449565/getting-displacement-from-accelerometer-data-with-core-motion 50 ticks are processed and the tiny neglectable error will outrun the true value. I would strongly recommend to not rely on trapezoidal rule but to use at least Simpson or a higher degree Newton Cotes formula. If you managed this you will have..
port an iOS (iPhone) app to mac? http://stackoverflow.com/questions/4579849/port-an-ios-iphone-app-to-mac views in your iOS app. Essentially you will have to change to using layers instead of simply views on the Mac if you rely on nested hierarchies of views here and there on the fone Click this link Is there a proper way to handle overlapping NSView..
Repeating NSTimer, weak reference, owning reference or iVar? http://stackoverflow.com/questions/4945028/repeating-nstimer-weak-reference-owning-reference-or-ivar Cancel method self walkTimer invalidate self setWalkTimer nil ... ... dealloc method super dealloc . 3 Use an iVar and rely on the runLoop holding i.e. retaining the timer NSTimer walkTimer NSTimer walkTimer NSTimer scheduledTimerWithTimeInterval..
NSTimer on background IS working http://stackoverflow.com/questions/5187741/nstimer-on-background-is-working
Safari iPhone - How to detect zoom level and offset? http://stackoverflow.com/questions/668462/safari-iphone-how-to-detect-zoom-level-and-offset document.documentElement.clientWidth window.innerWidth I've tested iOS4 without viewport meta . However I wouldn't rely on it for anything important. DOM viewport sizes pixel sizes in mobile browsers are a complete mess . share improve this..
Using UIPinchGestureRecognizer to scale uiviews in single direction http://stackoverflow.com/questions/6759028/using-uipinchgesturerecognizer-to-scale-uiviews-in-single-direction lastTouchPosition currentTouchLocation This will not store at each iteration the current hFloat and vFloat and instead rely on the fact that the gestureRecognizer will accumulate the overall scale change. It does an absolute calculate while the..
http://stackoverflow.com/questions/7465713/how-to-detect-iap-crackers but there are lots of creative solutions out there encrypted string constants e.g. . Whatever it is though it should rely on or check for the presence of some piece of data that it'll get from your web server. Modify your IAP processing code..
Moving a Stick figure, anchorpoints, animation, or something else…? http://stackoverflow.com/questions/7808981/moving-a-stick-figure-anchorpoints-animation-or-something-else In the above case the texture is now centered with its lower left corner over the node's position. You can no longer rely on the position of the sprite marking the center of the sprite image. If you modify the anchorPoint arbitrarily for every.. anchorPoint can result in undesirable behavior when rotating or scaling nodes. Let's assume an odd worst case but entirely possible scenario where the anchorPoint is no longer inside the texture ._______. ° ° That means the position.. image is being displayed. This can lead to collision check discrepancies in particular the above situation would entirely void radius based collision checks. This is also a confusing situation to be in during development. Your game will be far..
`[super viewDidLoad]` convention http://stackoverflow.com/questions/844195/super-viewdidload-convention method first if you are going to call it at all . This gives the super class a chance to do any set up that you may be relying on later in your method. If you're doing something related to destruction call the super class's method last. This makes.. If you're doing something related to destruction call the super class's method last. This makes sure that you can rely on the state of the object throughout the execution of your method. Finally take any other case on a case by case basis...
How do I verify reference count in ARC mode? http://stackoverflow.com/questions/8863269/how-do-i-verify-reference-count-in-arc-mode count can be used to learn about the implementation of some classes. Only do this for entertainment or curiosity Never rely on undocumented implementation details in production code For example try this immediately inside the @autoreleasepool in..
Way to make a UIButton continuously fire during a press-and-hold situation? http://stackoverflow.com/questions/903114/way-to-make-a-uibutton-continuously-fire-during-a-press-and-hold-situation if timer nil timer invalidate timer nil This way you can repeat the event at a predefined interval and not have to rely on a button and get the repeat behaviour you're looking for. Note the touchesMoved trigger if they move their finger this..
Why does Apple recommend to use dispatch_once for implementing the singleton pattern under ARC? http://stackoverflow.com/questions/9119042/why-does-apple-recommend-to-use-dispatch-once-for-implementing-the-singleton-pat instantiate the singleton asynchronously in the background I mean what happens if I request that shared instance and rely on it immediately but dispatch_once takes until Christmas to create my object It doesn't return immediately right At least..
how to create iphone's wobbling icon effect? http://stackoverflow.com/questions/929364/how-to-create-iphones-wobbling-icon-effect to pass along anything to the start stop methods. In this case it's the wobbling object itself so you don't have to rely on specific ivars and the method can be used for any generic UIView based object i.e. text labels images etc. share improve..
iPhone assembly, compilation error with LDR parameters http://stackoverflow.com/questions/9735169/iphone-assembly-compilation-error-with-ldr-parameters doesnt sound like the right error. The two solutions are the above where you explicitly place the values and not rely on the assembler or you put a .pool or other similar directive in a branch shadow or some other place that you wont execute..
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