这是我的代码:
let button_video = UIButton(type: .custom)
button_video.frame = CGRect.zero
if subsession.VideoUrl != nil
{
button_video.frame = CGRect(x: 10, y: yAxis + 15, width: 300, height: 30)
button_video.contentEdgeInsets = UIEdgeInsets(top: 3, left: 28, bottom: 7, right: 5)
if iVideoNumber == 0
{
button_video.setTitle(String(format: "Video #%i", 1), for: .normal)
}
else
{
button_video.setTitle(String(format: "Video #%i", iVideoNumber+1), for: .normal)
}
button_video.titleLabel?.font = UIFont(name: "OpenSans-Regular", size: 15)
button_video.titleLabel?.textColor = UIColor.white
button_video.setTitleColor(UIColor.white, for: .normal)
button_video.titleLabel?.numberOfLines = 0
button_video.titleLabel?.lineBreakMode = .byWordWrapping
button_video.titleLabel?.textAlignment = .center
button_video.tag = iCount
button_video.addTarget(self, action: #selector(CourseDetailViewController.loadVideo(sender:)), for: .touchUpInside)
let btnGradient = CAGradientLayer()
btnGradient.frame = button_video.bounds
btnGradient.cornerRadius = 6
btnGradient.colors = [(UIColor(red: 174.0 / 255.0, green: 127.0 / 255.0, blue: 183.0 / 255.0, alpha: 1.0).cgColor as CGColor), (UIColor(red: 78.0 / 255.0, green: 57.0 / 255.0, blue: 96.0 / 255.0, alpha: 1.0).cgColor as CGColor)]
button_video.layer.insertSublayer(btnGradient, at: 0)
button_video.sizeToFit()
view_scrollView.addSubview(button_video)
}
}
然而,按钮占据了 300 的整个宽度