我希望在以下条件下有一个触发其方法的按钮：
>当用户点击按钮时
>当用户按下按钮并将他/她的手指拖出按钮区域时
>当用户将他/她的手指从按钮区域外拖到按钮区域内
基本上,任何时候触摸按钮的任何部分,无论触摸的来源,我想要触发方法,但希望通过操作UIButton属性来完成此操作,如touchUpInside等.
谢谢你的建议！
解决方法
关于：
- When the user presses the button and drags his/her finger out of the button’s area
(在此示例中,您将UIButton子类化,如：class FadingButton：UIButton)
...
// The user tapped the button and then moved the finger around.
override func touchesMoved(_ touches: Set<UITouch>,with event: UIEvent?) {
super.touchesMoved(touches,with: event)
// Get the point to which the finger moved
if let point: CGPoint = touches.first?.location(in: self) {
// If the finger was dragged outside of the button...
if ((point.x < 0 || point.x > bounds.width) ||
(point.y < 0 || point.y > bounds.height)) {
// Do whatever you need here
}
}
}
...
我希望它对某人有帮助.