Create default queue over the main queue is to run tasks in the background in ios.

Updated 14 December 2016


Background Process


In most of the time when we launch application then we have to load the images also for that application takes too much time for launching due to that reason we have to perform some task in the the background so that it will not affect foreground process.



here I am giving an example of image loading and store into the cache when the application comes to background mode to foreground mode. so that whatever function you have to implement , write under the block of



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