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2014/10/15 ¤U¤È 10:05:25

iphone Programming Glossary: concurrentqueue

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

UIImage imageWithContentsOfFile is thread safe. dispatch_queue_t mainQueue dispatch_get_main_queue dispatch_queue_t concurrentQueue dispatch_get_global_queue DISPATCH_QUEUE_PRIORITY_DEFAULT 0 dispatch_async concurrentQueue ^ dispatch_apply thumbnails count.. dispatch_queue_t concurrentQueue dispatch_get_global_queue DISPATCH_QUEUE_PRIORITY_DEFAULT 0 dispatch_async concurrentQueue ^ dispatch_apply thumbnails count concurrentQueue ^ size_t index Thumbnail thumbnail thumbnails objectAtIndex index thumbnail.image.. DISPATCH_QUEUE_PRIORITY_DEFAULT 0 dispatch_async concurrentQueue ^ dispatch_apply thumbnails count concurrentQueue ^ size_t index Thumbnail thumbnail thumbnails objectAtIndex index thumbnail.image UIImage imageWithContentsOfFile thumbnail.url..

Load image to a tableView from URL iphone sdk

http://stackoverflow.com/questions/7565123/load-image-to-a-tableview-from-url-iphone-sdk

this question You can use GCD to load images in background thread like this get a dispatch queue dispatch_queue_t concurrentQueue dispatch_get_global_queue DISPATCH_QUEUE_PRIORITY_DEFAULT 0 this will start the image loading in bg dispatch_async concurrentQueue.. dispatch_get_global_queue DISPATCH_QUEUE_PRIORITY_DEFAULT 0 this will start the image loading in bg dispatch_async concurrentQueue ^ NSData image NSData alloc initWithContentsOfURL imageURL this will set the image when loading is finished dispatch_async..