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2014/10/15 ¤U¤È 10:10:12
iphone Programming Glossary: imagewithcontentsoffilehttp://stackoverflow.com/questions/11486828/table-view-scrolling-async queue dispatch_get_global_queue DISPATCH_QUEUE_PRIORITY_HIGH 0ul dispatch_async queue ^ UIImage image UIImage imageWithContentsOfFile beer.imagePath beer.image image dispatch_sync dispatch_get_main_queue ^ UITableViewCell cell self.tableView cellForRowAtIndexPath..
Animated Splash Screen in iPhone http://stackoverflow.com/questions/12745055/animated-splash-screen-in-iphone for NSInteger i 1 i totalImages i NSString strImage NSString stringWithFormat @ Activity_ d i UIImage image UIImage imageWithContentsOfFile NSBundle mainBundle pathForResource strImage ofType @ png imageArray addObject image splashImageView.animationImages imageArray..
UITableViewCell(s) with default image overwritten with other images upon scrolling http://stackoverflow.com/questions/15702242/uitableviewcells-with-default-image-overwritten-with-other-images-upon-scrolli documentsDirectory stringByAppendingPathComponent NSString stringWithString imageName self.reminderImage UIImage imageWithContentsOfFile reminderString if reminderImage nil UIImageView imageView UIImageView alloc initWithFrame CGRectMake 240 3 70 63 imageView.backgroundColor..
Saving image to Documents directory and retrieving for email attachment http://stackoverflow.com/questions/2037432/saving-image-to-documents-directory-and-retrieving-for-email-attachment
Add rounded corners to UIImageView http://stackoverflow.com/questions/2171506/add-rounded-corners-to-uiimageview void viewDidLoad super viewDidLoad NSString mainpath NSBundle mainBundle bundlePath welcomeImageView.image UIImage imageWithContentsOfFile mainpath stringByAppendingString @ test.png welcomeImageView.layer.cornerRadius 9.0 welcomeImageView.layer.masksToBounds.. easier for just small changes. e.g add a method that returns a UIImage with the rounded corner attributes set. UIImage imageWithContentsOfFile NSString file cornerRadius NSInteger ... more info on Objective c categories can be found http macdevelopertips.com objective..
Problem dealloc'ing memory used by UIImageViews with fairly large image in an UIScrollView http://stackoverflow.com/questions/289360/problem-deallocing-memory-used-by-uiimageviews-with-fairly-large-image-in-an-ui elements as normal but don't select an image. Then in your viewDidLoad code you go in and load an image using imageWithContentsOfFile instead. This method does NOT cache the image and therefore does not cause any memory issues with retaining large images... stringByAppendingString NSString stringWithFormat @ @ d.png self.nibName imageView.tag UIImage loadImage UIImage imageWithContentsOfFile fullpath imageView.image loadImage So adding that to my code above the full function looks like this CGFloat findHeight..
img_data_lock iphone - imageNamed vs imageWithContentsofFile http://stackoverflow.com/questions/2907780/img-data-lock-iphone-imagenamed-vs-imagewithcontentsoffile UIImage imageWithData... Currently my app loads a series of images via imageNamed replacing the imageNamed call with imageWithContentsOfFile seems to solve the issue. Does anybody have any information about the img_data_lock caller Why would someone use imageNamed.. takes such a toll on memory iphone memory management share improve this question UIImage's methods imageNamed and imageWithContentsOfFile do slightly different things. imageNamed loads the image in a special system cache and then future calls with that image.. cache and then future calls with that image path will return the image in the cache instead of reloading it from disk. imageWithContentsOfFile simply loads the image at the path you specify but does no caching. Multiple calls to imageWithContentsOfFile for the same..
App Crashing when using large images on iOS 4.0 http://stackoverflow.com/questions/3679457/app-crashing-when-using-large-images-on-ios-4-0 2G it crashes. I searched across the web and found the imageNamed is evil article. Ok I changed all my image calls to imageWithContentsOfFile but it still crashes the only different that I see is that now images are deallocated after I leave the view just fine...
Objective-C Category Causing unrecognized selector http://stackoverflow.com/questions/3998483/objective-c-category-causing-unrecognized-selector mainScreen scale NSString path NSString stringWithFormat @ @ @ @.png kImagesPath name s 1 @ @2x @ return UIImage imageWithContentsOfFile DRBUNDLE path @end file that calls it backgroundView UIImageView alloc initWithImage UIImage imageNamedDR @ Share Popup..
layer.renderInContext doesn't take layer.mask into account? http://stackoverflow.com/questions/4896296/layer-renderincontext-doesnt-take-layer-mask-into-account my view with on top of that a masked mosaicLayer. I use the following code to mask the image UIImage maskImg UIImage imageWithContentsOfFile NSBundle mainBundle pathForResource @ mask ofType @ png maskLayer UIImageView alloc initWithImage maskImg maskLayer.multipleTouchEnabled..
How to make ui responsive all the time and do background updating? http://stackoverflow.com/questions/5133731/how-to-make-ui-responsive-all-the-time-and-do-background-updating to a graphics context. For example UIScrollView is not thread safe UIImage imageNamed is not thread safe but UIImage imageWithContentsOfFile is thread safe. dispatch_queue_t mainQueue dispatch_get_main_queue dispatch_queue_t concurrentQueue dispatch_get_global_queue.. count concurrentQueue ^ size_t index Thumbnail thumbnail thumbnails objectAtIndex index thumbnail.image UIImage imageWithContentsOfFile thumbnail.url dispatch_sync mainQueue ^ update UIScrollView using thumbnail. It is safe because this block is on main thread...
http://stackoverflow.com/questions/6410798/annotation-on-the-map-problem documentsDirectory stringByAppendingPathComponent NSString stringWithString imageName UIImage actualImage UIImage imageWithContentsOfFile fullImgNm CGSize annImgSize annImgSize.width 60 annImgSize.height 30 UIImage locationImage self resizeImage actualImage..
http://stackoverflow.com/questions/7712161/how-to-detect-touches-on-uiimageview-of-uitableviewcell-object-in-the-uitablevie @ Sometext NSString path NSBundle mainBundle pathForResource @ emptystar1 ofType @ png UIImage theImage UIImage imageWithContentsOfFile path cell.imageView.image theImage cell.imageView.userInteractionEnabled YES But its not working. Whenever the image is..
how to create an application which allows user to free hand drawing? [closed] http://stackoverflow.com/questions/8207913/how-to-create-an-application-which-allows-user-to-free-hand-drawing withEvent UIEvent event mouseSwiped NO UITouch touch touches anyObject if touch tapCount 2 drawImage setImage UIImage imageWithContentsOfFile NSBundle mainBundle pathForResource @ white ofType @ png return lastPoint touch locationInView self.view lastPoint.y 20..
Dispelling the UIImage imageNamed: FUD http://stackoverflow.com/questions/924740/dispelling-the-uiimage-imagenamed-fud might consume a few dozen KBs when compressed but consumes over half a MB decompressed width height 4 . By contrast imageWithContentsOfFile will decompress that image everytime the image data is needed. As you can imagine if you only need the image data once you've.. UIImage imageFromMainBundleFile NSString aFileName NSString bundlePath NSBundle mainBundle bundlePath return UIImage imageWithContentsOfFile NSString stringWithFormat @ @ @ bundlePath aFileName Rincewind also included some example code to build your own optimised..
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