Swift:视图添加到窗口时阴影不显示
我试图给我的customView投下阴影,但它没有显示出来。使用Swift:视图添加到窗口时阴影不显示,swift,Swift,我试图给我的customView投下阴影,但它没有显示出来。使用window?.addSubview(customView)将此customView添加到窗口中 迄今为止的执行情况: //CustomView setup lazy var customView: UIView = { let v = UIView() v.translatesAutoresizingMaskIntoConstraints = false v.layer.cornerRadius = 8
window?.addSubview(customView)
将此customView添加到窗口中
迄今为止的执行情况:
//CustomView setup
lazy var customView: UIView = {
let v = UIView()
v.translatesAutoresizingMaskIntoConstraints = false
v.layer.cornerRadius = 8
v.layer.shadowColor = UIColor.darkGray.cgColor
v.layer.shadowOffset = CGSize(width: 0, height: 10)
v.layer.shadowOpacity = 10.5
v.layer.shadowRadius = 15.0
v.layer.masksToBounds = true
return v
}()
//Adding view to window
window?.addSubview(customView)
NSLayoutConstraint.activate([
customView.leadingAnchor.constraint(equalTo: window!.leadingAnchor),
customView.trailingAnchor.constraint(equalTo: window!.trailingAnchor),
customView.heightAnchor.constraint(equalTo: window!.heightAnchor, multiplier: 1),
customView.topAnchor.constraint(equalTo: window!.safeAreaLayoutGuide.bottomAnchor, constant: -100)
])
我遵循了这个和这个的建议,但不知何故,添加到窗口中的视图并没有显示它。这是因为这行:
v.layer.masksToBounds = true
如果您想要阴影和圆角,我建议使用两个层,一个层具有阴影和masksToBounds=false
,另一个层是第一个层的子层,具有圆角+masksToBounds=true