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除了兩個彼此接近的按鈕之外,以下代碼完美運行。有什麼辦法可以使用這個擴展來處理我喜歡使用的按鈕?或者,我可以排除不需要使用此擴展名的按鈕嗎?如何在不改變背景圖片的情況下增加UIButton的水龍頭面積
extension UIButton {
public override func hitTest(point: CGPoint, withEvent event: UIEvent?) -> UIView? {
let buttonSize = self.frame.size
let widthToAdd = (44-buttonSize.width > 0) ? 44-buttonSize.width : 0
let heightToAdd = (44-buttonSize.height > 0) ? 44-buttonSize.height : 0
let largerFrame = CGRect(x: 0-(widthToAdd/2), y: 0-(heightToAdd/2), width: buttonSize.width+widthToAdd, height: buttonSize.height+heightToAdd)
return (CGRectContainsPoint(largerFrame, point)) ? self : nil
}
}