iOS 7.1 UITapGestureRecognizer 不好用的解决办法
UITapGestureRecognizer *tap3 = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(onSecondNavClick:)]; [field3 addGestureRecognizer:tap3]; tap3.delegate = self;
-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer{ // return return true; }