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我想在界面构建器中渲染垂直滑块,但是,当我尝试设置值界面生成器时,会给我一个警告。UISlider - IB_DESIGNABLE - 运行时属性警告
我在这里做错了什么?
@IBDesignable
class VerticalSlider: UISlider {
@IBInspectable var setOrientation: Bool! {
didSet {
if setOrientation == true{
self.transform = CGAffineTransformMakeRotation(CGFloat(-M_PI_2))
}else {
self.transform = CGAffineTransformIdentity
}
}
}
}