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2014/10/15 ¤U¤È 10:13:18
iphone Programming Glossary: repeatedlyHow to crop a UIImageView to a custom shape http://stackoverflow.com/questions/13015676/how-to-crop-a-uiimageview-to-a-custom-shape then follow user gestures sampling the touches and adding small segments by calling CGContextMoveToPoint repeatedly as touchesMoved. Create mask To turn the path into a mask you want a black background and the path filled with white. If..
unichar and NSString - how interchangeable are these? http://stackoverflow.com/questions/1354388/unichar-and-nsstring-how-interchangeable-are-these NSString str NSString stringWithFormat @ C otherString characterAtIndex 1 Choose the category if you want to use it repeatedly or if you only have to do it once use the stringWithFormat example Not to sure about the internals of NSString but I'd guess..
Animating a custom property of CALayer subclass http://stackoverflow.com/questions/2395382/animating-a-custom-property-of-calayer-subclass method. Now when you animate myInt Core Animation will interpolate the values for each step of the animation and repeatedly ask the layer to draw itself. If you also want to enable implicit animations for this property also override actionForKey..
CGBitmapContextCreate on the iPhone/iPad http://stackoverflow.com/questions/2619224/cgbitmapcontextcreate-on-the-iphone-ipad your code I would suggest refactoring it to create an offscreen CGContext once before you start processing and use it repeatedly to process each image. Then release it when you are done. That is going to be faster in any case since you aren't allocating..
Is NSNumberFormatter the only way to format an NSDecimalNumber? http://stackoverflow.com/questions/2940439/is-nsnumberformatter-the-only-way-to-format-an-nsdecimalnumber
UITableView dequeueReusableCellWithIdentifier Theory http://stackoverflow.com/questions/3552343/uitableview-dequeuereusablecellwithidentifier-theory came up with a way to reuse cells. Object allocation has a performance cost especially if the allocation has to happen repeatedly over a short period ”say when the user scrolls a table view. If you reuse cells instead of allocating new ones you greatly..
http://stackoverflow.com/questions/3593180/iphone-codesign-failed was not signed with an Apple submission certificate. 19011 I have re downloaded all of the certificates and profiles repeatedly and it still won't work. However if I click 'build' and it says codesign failed but then drag the product .app file to my..
How to split long NSString into pages http://stackoverflow.com/questions/3812692/how-to-split-long-nsstring-into-pages and draw that part of it on the next page. and repeat Any ideas how to solve this Only idea I have myself so far is to repeatedly call sizeWithFont constrainedToSize around the point in the string where I'm guessing the page break will be and analyse..
http://stackoverflow.com/questions/3926164/mkerrordomain-error-4-iphone did was restarting the app. iphone mkreversegeocoder share improve this question I've been hitting this error repeatedly and was unable to figure out how to make it stop but I finally found an end run around the whole issue that works quite..
Custom UITableViewCell and animation on setSelected:animated: http://stackoverflow.com/questions/3982942/custom-uitableviewcell-and-animation-on-setselectedanimated beginAnimations etc. and animate a custom floating point field in my cell object from 1 to 0. Will this call drawRect repeatedly to animate Update I managed to get this almost working. I've overridden setSelected animated like so void setSelected BOOL..
Mysterious “progressive slowing” problem in run loop / drawRect http://stackoverflow.com/questions/4786754/mysterious-progressive-slowing-problem-in-run-loop-drawrect and nice sample code. Here is my take on a possible answer The issue I see is the following. CGLayer are great for repeatedly painting because they cache their rendering into a flat image. The cache is invalidated when additional operations are appended..
AES interoperability between .Net and iPhone? http://stackoverflow.com/questions/538435/aes-interoperability-between-net-and-iphone k which should probably be kList.Add kRaw i 8 kRaw.Length . Otherwise a key whose length 8 0 will use the same letter repeatedly doh Thus the IV and key used by .Net is hleolhleolhleolh . This is not part of the API but rather due to the wrapper code..
Facebook iOS Authorise and Post Without Dialog? http://stackoverflow.com/questions/6144457/facebook-ios-authorise-and-post-without-dialog to the Facebook app which I have installed on my iPhone and says already authorised press okay. How can I stop it repeatedly doing this I also have tried posting to Facebook without a dialog. The console tells me a request is made but then a error..
viewDidLoad and awakeFromNib timing http://stackoverflow.com/questions/6302629/viewdidload-and-awakefromnib-timing view did load shows up before awake from nib in the console. I tried to use a breakpoint at super awakeFromNib and repeatedly hit F7 Step Into and to my surprise it stepped into void viewDidLoad BEFORE going to the second line inside awakeFromNib...
http://stackoverflow.com/questions/6488732/how-does-one-compare-one-image-to-another-to-see-if-they-are-similar-by-a-certai color of a pixel at a given position in an image. You may want to optimize it somewhat to better suit your use case repeatedly querying the same image but it should provide a good starting point. Then you can use an algorithm roughly like float numDifferences..
UIImagePickerController Memory Leak http://stackoverflow.com/questions/6554225/uiimagepickercontroller-memory-leak is what I see in instruments when all I do is open the UIImagePickerController pick photo library and press cancel repeatedly. As you can see the memory keeps growing and eventually this causes my iPhone app to slow down tremendously. As you can..
How to make UIScrollView send scrollViewDidScroll messages during animations http://stackoverflow.com/questions/7319906/how-to-make-uiscrollview-send-scrollviewdidscroll-messages-during-animations When the user manually scrolls through my UIScrollView the scrollViewDidScroll method of my delegate gets called repeatedly during the animation with newly updated values of the contentOffset. When I call scrollView setContentOffset 320 animated..
jQuery not loading on the iPhone http://stackoverflow.com/questions/792585/jquery-not-loading-on-the-iphone
Faster alternative to glReadPixels in iPhone OpenGL ES 2.0 http://stackoverflow.com/questions/9550297/faster-alternative-to-glreadpixels-in-iphone-opengl-es-2-0 the frame buffer to process the data further in CPU. Performance is important because I have to perform this operation repeatedly. I have searched the web and found some approach like using Pixel Buffer Object and glMapBuffer but it seems that OpenGL..
http://stackoverflow.com/questions/9763979/download-image-asynchronously category . But it crashes when I click the back button and forward button when I try to go back and forth of the view repeatedly . Anyway this happens very rarely but I need to get rid of this bug. Is there any other library that does not use private..
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