ios - How to pause UIView Animations -

In IOS5.0 using blocks, we have a UIViewAnimationOptionAutoreverse animation, and delay before reverse animation Should start .. how can we do this?

Thank you for your help on this

  prevent animation and Best way to start again: Add quartzakor framework, then use the following apple code - pause (zero) {CFTim Interface Paused Time = [M_P Customize Button Obj. Player Convert Time: CacRRTM MediaTime): Layer: Nyl]; Obj.layer.speed = 0.0; Obj.layer.timeOffset = pausedTime; } - (zero) resume {CFTimeInterval pausedTime = [obj.layer time offset]; Obj.layer.speed = 1.0; Obj.layer.timeOffset = 0.0; Obj.layer.beginTime = 0.0; CFTimeInterval timeSincePause = [obj.layer convert time: layer from CACurrentMediaTime (): zero] - paused time; Obj.layer.beginTime = timezone; }