2014/10/15 下午 10:10:29

iphone Programming Glossary: instantly

http://stackoverflow.com/questions/11589768/bug-in-uikit-string-drawing-method

broken if all you do is string drawing avoiding the overhead of creating destroying contexts the crash happens nearly instantly void threadFunc UIFont font @autoreleasepool NSString string @ CGRect r 0 0 50 50 UIGraphicsBeginImageContextWithOptions..

How to crossfade between 2 images on iPhone using Core Animation

http://stackoverflow.com/questions/1550206/how-to-crossfade-between-2-images-on-iphone-using-core-animation

line self.imageView.layer.contents image2.CGImage ...I can see the image now but it does not fade in it just appears instantly. iphone core animation share improve this question You were almost there. CABasicAnimation crossFade CABasicAnimation..

Initial iPhone virtual keyboard display is slow for a UITextField. Is this hack around required?

http://stackoverflow.com/questions/1628915/initial-iphone-virtual-keyboard-display-is-slow-for-a-uitextfield-is-this-hack

it isn't too obvious but on an older iPhone the delay can be around 1 second. After that the keyboard always pops up instantly. The delay is only the first time the keyboard pops up after app startup. It looks like the initial UIKeyboard instantiation..

iPhone 5 Optimization Requirement - Launch image really necessary?

http://stackoverflow.com/questions/16552348/iphone-5-optimization-requirement-launch-image-really-necessary

one launch image. A launch image looks very similar to the first screen your app displays. iOS displays this image instantly when the user starts your app and until the app is fully ready to use. As soon as your app is ready for use your app displays..

Disabling implicit animations in -[CALayer setNeedsDisplayInRect:]

http://stackoverflow.com/questions/2244147/disabling-implicit-animations-in-calayer-setneedsdisplayinrect

updates my layer it's transitioning from the old to the new image using a cross fade. I'd like it to switch over instantly. I've tried using CATransaction to turn off actions and set the duration to zero and neither work. Here's the code I'm using..

Keyboard Animation Issues When Calling becomeFirstResponder within a Modal View Controller

http://stackoverflow.com/questions/2512502/keyboard-animation-issues-when-calling-becomefirstresponder-within-a-modal-view

I don't ask the keyboard to present itself then there is absolutely no UI lag and the modal view controller animates instantly. Interestingly if I do something like self.textField performSelector @selector becomeFirstResponder withObject nil afterDelay..

What happens to my apps after my developer account membership expires?

http://stackoverflow.com/questions/3030889/what-happens-to-my-apps-after-my-developer-account-membership-expires

Does NSURLConnection Block the Main/UI Thread

http://stackoverflow.com/questions/3234054/does-nsurlconnection-block-the-main-ui-thread

do not seem to fully download until the table view stops moving. As soon as it stops moving the images almost download instantly. Is there anyway to use NSURLConnection where it is not blocked by the main UI thread Or is there a way where these images..

How can I make the iPhone 4 LED light fire instantly?

http://stackoverflow.com/questions/3983032/how-can-i-make-the-iphone-4-led-light-fire-instantly

can I make the iPhone 4 LED light fire instantly I'm currently using the below code to turn on and off my iPhone 4 LED light and it's working great but the only problem.. working great but the only problem is that every time I turn the LED on there is a slight delay. However it turns off instantly. I need it to fire instantly to implement a strobe like feature and because it's just more convenient. I've noticed that.. is that every time I turn the LED on there is a slight delay. However it turns off instantly. I need it to fire instantly to implement a strobe like feature and because it's just more convenient. I've noticed that in Apple's camera app and many..

How can I pop a view from a UINavigationController and replace it with another in one operation?

http://stackoverflow.com/questions/410471/how-can-i-pop-a-view-from-a-uinavigationcontroller-and-replace-it-with-another-i

are in will be deallocated causing strangeness. Once you do that prep then just pop and push as normal. This code will instantly replace the top controller with another. locally store the navigation controller since self.navigationController will be..

Temporarily Lock or Disable iphone home button

http://stackoverflow.com/questions/4190169/temporarily-lock-or-disable-iphone-home-button

which is indeed a very large market on the iPhone . If you've ever marketed an app for small children you'll know that instantly parents write in abusing you because you did not stop that stupid home button working so the child just turns off the game..

How to steal touches from UIScrollView?

http://stackoverflow.com/questions/4629499/how-to-steal-touches-from-uiscrollview

on my creative time I did some quite comprehensive research on how to steal touches from a UIScrollView and send them instantly to a specific subview while maintaining the default behavior for the rest of the scroll view. Consider having a UIPickerView..

didFailLoadWithError is called with UIWebView even though page later loads

http://stackoverflow.com/questions/7028383/didfailloadwitherror-is-called-with-uiwebview-even-though-page-later-loads

requestObj self.view addSubview webView webView release But the didFailLoadWithError delegate method is almost instantly called and the error object is Did fail load with error Error Domain NSURLErrorDomain Code 999 The operation couldn 脌 be.. failed or not iphone xcode ipad uiwebview share improve this question You can get this error when the page is instantly redirected via javascript or somehow else You can avoid showing the error by answer from here How do I fix NSURLErrorDomain..

How can I add CGPoint objects to an NSArray the easy way?

http://stackoverflow.com/questions/899600/how-can-i-add-cgpoint-objects-to-an-nsarray-the-easy-way

to create 50 variables like p1 ... p2 ... and so on. Is there an easy way that would let me to define those points instantly when initializing the NSArray with objects iphone objective c cocoa touch uikit share improve this question With UIKit..

AFNetworking and No Internet Connection scenario

http://stackoverflow.com/questions/9253496/afnetworking-and-no-internet-connection-scenario

login get data from url etc . Take this for example an user click on the login button and there's no connection how to instantly display a UIAlertView that says the error The only way is to wait the request timeout and execute the failure block Isn't.. that says the error The only way is to wait the request timeout and execute the failure block Isn't there a way that instantly check if there's connection or not Thanks iphone ios cocoa touch afnetworking share improve this question As of 0.9..

Should views be created using NIBs or code in iPhone?

http://stackoverflow.com/questions/998452/should-views-be-created-using-nibs-or-code-in-iphone

in your main NIB file it will not only increase memory usage by your application for resources which may not be needed instantly anyway but it will increase loading time. That being said however the normal workaround to this problem is not to use programmatic..