我的登录视图有一个子视图,它有一个UIActivityView和一个UILabel,上面写着“Signing In…”这个子视图有不圆角的角。我怎样才能把它们变圆呢?

有什么办法在我的xib里面做吗?


当前回答

在Swift 4.2和Xcode 10.1中

let myView = UIView()
myView.frame = CGRect(x: 200, y: 200, width: 200, height: 200)
myView.myViewCorners()
//myView.myViewCorners(width: myView.frame.width)//Pass View width
view.addSubview(myView)

extension UIView {
    //If you want only round corners
    func myViewCorners() {
        layer.cornerRadius = 10
        layer.borderWidth = 1.0
        layer.borderColor = UIColor.red.cgColor
        layer.masksToBounds = true
    }
    //If you want complete round shape, enable above comment line
    func myViewCorners(width:CGFloat) {
        layer.cornerRadius = width/2
        layer.borderWidth = 1.0
        layer.borderColor = UIColor.red.cgColor
        layer.masksToBounds = true
    }
}

其他回答

请导入Quartzcore框架,然后你必须设置setMaskToBounds为TRUE,这是非常重要的一行。

然后:[[yourView layer] setCornerRadius:5.0f];

UIView *view = [[UIView alloc] initWithFrame:CGRectMake(20, 50, 200, 200)];

view.layer.backgroundColor = [UIColor whiteColor].CGColor;
view.layer.cornerRadius = 20.0;
view.layer.frame = CGRectInset(v.layer.frame, 20, 20);

view.layer.shadowOffset = CGSizeMake(1, 0);
view.layer.shadowColor = [[UIColor blackColor] CGColor];
view.layer.shadowRadius = 5;
view.layer.shadowOpacity = .25;

[self.view addSubview:view];
[view release];

- 斯威夫特

在SwiftUI中,你可以直接在任何你想要的视图上使用拐角半径修饰器。 比如这个问题:

Text("Signing In…")
    .padding(16)
    .background(Color.red)
    .cornerRadius(50)

注意,没有更多的菱形半径,所以即使你设置角半径超过高度的一半,它也会平滑圆润。

查看这个答案,了解如何在SwiftUI中圆角

Swift 4 -使用IBDesignable

   @IBDesignable
    class DesignableView: UIView {
    }

    extension UIView
    {

        @IBInspectable
        var cornerRadius: CGFloat {
            get {
                return layer.cornerRadius
            }
            set {
            layer.cornerRadius = newValue
        }
    }
}

在Swift 4.2和Xcode 10.1中

let myView = UIView()
myView.frame = CGRect(x: 200, y: 200, width: 200, height: 200)
myView.myViewCorners()
//myView.myViewCorners(width: myView.frame.width)//Pass View width
view.addSubview(myView)

extension UIView {
    //If you want only round corners
    func myViewCorners() {
        layer.cornerRadius = 10
        layer.borderWidth = 1.0
        layer.borderColor = UIColor.red.cgColor
        layer.masksToBounds = true
    }
    //If you want complete round shape, enable above comment line
    func myViewCorners(width:CGFloat) {
        layer.cornerRadius = width/2
        layer.borderWidth = 1.0
        layer.borderColor = UIColor.red.cgColor
        layer.masksToBounds = true
    }
}