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2014/10/15 ¤U¤È 10:04:05
iphone Programming Glossary: assumesiOS: Keep an app running like a service http://stackoverflow.com/questions/11044095/ios-keep-an-app-running-like-a-service newstand. Even if it has one of these types an app cannot execute without restrictions. The rest of this discussion assumes the app does not have a background mode. If you try to use one of these background modes to enable your app to be capable..
How to get a rotated, zoomed and panned image from an UIImageView at its full resolution? http://stackoverflow.com/questions/11104042/how-to-get-a-rotated-zoomed-and-panned-image-from-an-uiimageview-at-its-full-re of the enclosing view superview of faceImageView with clipsToBounds set to YES using a calculated scale factor. It assumes that the content mode of faceImageView is UIViewContentModeScaleAspectFit and that the frame of faceImageView is set to..
iPhone: Base versus Active versus Deployment target http://stackoverflow.com/questions/1358033/iphone-base-versus-active-versus-deployment-target Here are my assumptions and understandings which I want to know if they are correct before submitting. My application assumes features supported by all OS and so I should Set the Active SDK to be the latest currently SDK 3.0 . Set the Deployment..
How to handle different orientations in iOS 6 http://stackoverflow.com/questions/15947349/how-to-handle-different-orientations-in-ios-6 interface orientation. This is why the default implementation of UINavigationController is to always rotate it assumes all view controllers have the same supported interface orientations. Take for example video playback on iPhone. Open the..
How to get the center of the thumb image of UISlider http://stackoverflow.com/questions/1714405/how-to-get-the-center-of-the-thumb-image-of-uislider
http://stackoverflow.com/questions/1878595/how-to-make-a-circular-uiview newSize 2.0 roundedView.center saveCenter To use it just pass it a UIImageView and a diameter. This example assumes you have a UIImageView named circ added as a subview to your view . It should have a backgroundColor set so you can see..
http://stackoverflow.com/questions/2483470/playing-sounds-in-iphone-sdk @ caf AVAudioPlayer click AVAudioPlayer alloc initWithContentsOfURL musicFile error nil click play click release This assumes a file called click.caf available in the main bundle. As I play this sound a lot I actually keep it around to play it later..
How to test an iPhone application update? http://stackoverflow.com/questions/2524326/how-to-test-an-iphone-application-update sqlite database and property list files on the earlier version do not get deleted overwritten etc The new version assumes the old data in both the sqlite database and property lists remain. Or better yet is there a resource I can use to walk..
Figure out UIBarButtonItem frame in window? http://stackoverflow.com/questions/2994354/figure-out-uibarbuttonitem-frame-in-window toView nil The index is the index to your bar item in the array of .items after removing all blank items . This assumes the buttons are arranged in increasing order which may not be. A more reliable method is to sort the buttons array in increasing.. may not be. A more reliable method is to sort the buttons array in increasing .origin.x value. Of course this still assumes the bar button item must inherit the UIControl class and are direct subviews of the toolbar nav bar which again may not..
http://stackoverflow.com/questions/3088624/support-legacy-iphone-users experience on this Do you plunge ahead with the latest and greatest or stick with the current version p.s. This assumes GM installs of the OS on end users when it is available not beta. iphone ios4 share improve this question It depends...
Can I select a specific block of text in a UITextField? http://stackoverflow.com/questions/3277538/can-i-select-a-specific-block-of-text-in-a-uitextfield possible Selecting the last 5 characters before the caret would be like this Get current selected range this example assumes is an insertion point or empty selection UITextRange selectedRange textField selectedTextRange Calculate the new position..
http://stackoverflow.com/questions/4015557/uitextview-in-a-uitableviewcell-smooth-auto-resize-shows-and-hides-keyboard-on-i my code The Code returns the proper height size for the UITextView based on the string it contains. If no string it assumes a space so that it will always have one line. CGSize textViewSize UITextView textView float fudgeFactor 16.0 CGSize tallerSize..
Get PDF hyperlinks on iOS with Quartz http://stackoverflow.com/questions/4080373/get-pdf-hyperlinks-on-ios-with-quartz story... Update 2 So I finally came up with some working code. I'm posting it here so hopefully it'll help someone. It assumes the PDF document actually contains annotations. for int i 0 i pageCount i CGPDFPageRef page CGPDFDocumentGetPage doc i 1..
send RSA public key to iphone and use it to encrypt http://stackoverflow.com/questions/4211484/send-rsa-public-key-to-iphone-and-use-it-to-encrypt docs this site the Apple developer forums and probably elsewhere. So thanks to everyone I cribbed code from This code assumes several things You've already generated your RSA key pairs I'm using a 4096 bit key and it seems speedy enough and using..
performSelector may cause a leak because its selector is unknown http://stackoverflow.com/questions/7017281/performselector-may-cause-a-leak-because-its-selector-is-unknown scope until inner most release pool is drained attributed with ns_returns_autoreleased The call to methodForSelector assumes that the return value of the method it's calling is an object but does not retain release it. So you could end up creating..
Most efficient way to draw part of an image in iOS http://stackoverflow.com/questions/8035673/most-efficient-way-to-draw-part-of-an-image-in-ios drawing. They don't fit a GPU interface very well. It allows reading operation freely and it's fast. That means it assumes back end storage is located in memory near the CPU. Reading from GPU memory is usually very expensive slow. Maybe somewhat..
Photos app-like gap between pages in UIScrollView with pagingEnabled http://stackoverflow.com/questions/849383/photos-app-like-gap-between-pages-in-uiscrollview-with-pagingenabled app like gap between pages in UIScrollView with pagingEnabled UIScrollView in paging mode assumes the pages are located right next to each other with no gap. However if you open a photo in the Photos app and swipe through..
Difference between Modal and Push segue in storyboards http://stackoverflow.com/questions/9392744/difference-between-modal-and-push-segue-in-storyboards c ios5 storyboard share improve this question A push Segue is adding another VC to the navigation stack. This assumes that VC that originates the push is part of the same navigation controller that the VC that is being added to the stack..
NSdate Assuming wrong time zone http://stackoverflow.com/questions/9442126/nsdate-assuming-wrong-time-zone dateFormatter dateFromString str In console date 2012 05 25 04 55 00 0000....it lags behind 5 hours and 30 minutes and assumes GMT timezone instead of Asia...Why it is so iphone nsdate share improve this question When you see an NSDate description..
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