UIView动画块animation进行时默认是禁止交互（即手势什么的都不起作用）,可增加参数来改变

例:

[UIView animateWithDuration:3

                          delay:0.0

                        options:UIViewAnimationOptionCurveLinear|UIViewAnimationOptionAllowUserInteraction

                     animations:^{

唉  这问题又折腾了好久

转载自：http://stackoverflow.com/questions/5921173/uiview-animations-canceling-any-touch-input

Turns out UIView's block animation by default blocks user interaction, and to get around it you need to pass UIViewAnimationOptionAllowUserInteraction as one of the options. Hopefully someone else will have some use of this information as well.