pickerHeightConstraint
全部标签 我想隐藏一个元素(在我的例子中是数据选择器)并隐藏它的空间。所以我用动画试了一下:@IBActionfuncshowQnt(sender:AnyObject){if(self.pickerQnt.alpha==0.0){UIView.animateWithDuration(0.2,delay:0.0,options:UIViewAnimationOptions.ShowHideTransitionViews,animations:{self.pickerQnt.alpha=1.0},completion:{(finished:Bool)->Voidin//varconstH=NSLay
我想隐藏一个元素(在我的例子中是数据选择器)并隐藏它的空间。所以我用动画试了一下:@IBActionfuncshowQnt(sender:AnyObject){if(self.pickerQnt.alpha==0.0){UIView.animateWithDuration(0.2,delay:0.0,options:UIViewAnimationOptions.ShowHideTransitionViews,animations:{self.pickerQnt.alpha=1.0},completion:{(finished:Bool)->Voidin//varconstH=NSLay
