Different about auto layout and autoresizing masks

sorry,

I have to develop an app for ios. what is the difference in use of autolayout and autoresizing maks?

Please..

IT'S IMPORTANT!!!!!!!!!

Old school autoresizing masks are translated into auto layout constraints behind the scenes, so there's not much difference really. Autoresizing masks are nowhere near as flexible. But if the layout you need can be accomplished with autoresizing masks there should be no difference to the end user.

Different about auto layout and autoresizing masks
 
 
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