First of all, we need to create a custom IBDesignable UITabBar class and override the draw method. Here we need to insert a sublayer to the views layer. In the created layer, we define the inner color, the stroke color, and the path that we want to draw. Furthermore, I created a switch that is replacing the layer if it already exists. This way the layout also supports orientation changes.
Since the drawing of the path takes a little more code, I extracted it into a separate method.
The actual drawing of the custom TabBar `is implemented in the `createPath `method. With the help of the UIBezierPath`, we draw a line from the top left to the beginning of our indentation. Here it’s getting a little tricky [at least for me]. I got the correct Bézier curves by trial and error, and this nice tool.
After finishing the curves, we simply need to connect the missing corners of the UIBezierPath.
As we set the class of the TabBar `in the interface builder to our custom `TabBar, we can already see a preview of the new layout.
To add a button to the indentation, I simply created a button sized 70 x 70 in the two ViewController`s. For the layout, I used constraints, centering the button horizontally in the view and adding its vertical center to the bottom of the `TabBar. To give the button rounded corners, I used the `UITabBar`0 key path and set it to 25. Also, don’t forget to enable “clip to bounds.”
You maybe noticed that the icons are not really centered in relation to the indentation. I found no better solution than setting the key path of `UITabBar`1 for the `UITabBar`2. The left item is shifted by -20 and the right by 20.
Customizing the corner radius of a UIView can significantly enhance the visual appeal of your iOS applications. However, achieving this for specific corners, such as only the top-left and top-right, can sometimes be challenging. This guide will walk you through various methods to set the corner radius for only the top-left and top-right corners of a UIView.
Using UIBezierPath and CAShapeLayer
One of the most reliable ways to round specific corners of a UIView is by using a combination of UIBezierPath and CAShapeLayer. This method involves creating a custom path and applying it as a mask to the view’s layer. Below is a step-by-step example:
Objective-C
UIView *view = [[UIView alloc] initWithFrame:frame];
UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:view.bounds
byRoundingCorners:[UIRectCornerTopLeft | UIRectCornerTopRight]
cornerRadii:CGSizeMake[20.0, 20.0]];
CAShapeLayer *maskLayer = [CAShapeLayer layer];
maskLayer.frame = view.bounds;
maskLayer.path = maskPath.CGPath;
view.layer.mask = maskLayer;
Swift
let path = UIBezierPath[roundedRect: view.bounds,
byRoundingCorners: [.topRight, .topLeft],
cornerRadii: CGSize[width: 20, height: 20]]
let maskLayer = CAShapeLayer[]
maskLayer.path = path.cgPath
view.layer.mask = maskLayer
Using CACornerMask in iOS 11+
For iOS 11 and later, Apple introduced CACornerMask, which simplifies the process of rounding specific corners. This method is straightforward and requires less code compared to the UIBezierPath method.
Swift Example
let view = UIView[]
view.clipsToBounds = true
view.layer.cornerRadius = 10
view.layer.maskedCorners = [.layerMaxXMinYCorner, .layerMinXMinYCorner] // Top right and top left corners
Handling Auto Layout
If your UIView is using Auto Layout, you need to ensure the corner radius is applied after the view’s layout is finalized. This can be achieved by overriding the
let path = UIBezierPath[roundedRect: view.bounds,
byRoundingCorners: [.topRight, .topLeft],
cornerRadii: CGSize[width: 20, height: 20]]
let maskLayer = CAShapeLayer[]
maskLayer.path = path.cgPath
view.layer.mask = maskLayer
2 method.
Swift Example
class CustomView: UIView {
override func layoutSubviews[] {
super.layoutSubviews[]
roundCorners[corners: [.topLeft, .topRight], radius: 10.0]
}
func roundCorners[corners: UIRectCorner, radius: CGFloat] {
let path = UIBezierPath[roundedRect: bounds, byRoundingCorners: corners, cornerRadii: CGSize[width: radius, height: radius]]
let mask = CAShapeLayer[]
mask.path = path.cgPath
layer.mask = mask
}
}
Conclusion
Setting the corner radius for specific corners of a UIView can be done using different methods, each with its advantages. For older iOS versions, combining UIBezierPath and CAShapeLayer is a robust solution. For iOS 11 and later, CACornerMask offers a simpler and more efficient approach.
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How to give corner radius to TabBar in Swift?
To add any radius or shape you can use a UIBezierPath. The example that I put has left and right corners with a radius and you can use more designable personalizations if you want. Subclassing UITabBarController then overried viewWillLayoutSubviews[] and add this code .7 thg 3, 2019nullHow to set top left and right corner radius with desired drop shadow ...stackoverflow.com › questions › how-to-set-top-left-and-right-corner-radiu...null
How do I round only one corner in Swift?
Round Specific Corners in SwiftUI.
cornerRadius modifier. We can gain rounded corner for a view using cornerRadius modifier. ... .
clipShape Modifier. clipShape modifier with RoundedRectangle[cornerRadius:] shape style helps achieve the same results: ... .
background Modifier..
How to give corner radius to view in Swift?
In SwiftUI, applying rounded corners to a view is even simpler than in UIKit. SwiftUI provides the cornerRadius modifier, which can be used to set the radius of a view's corners: Text["Hello, world!"] This code creates a blue background with rounded corners on a text view with a radius of 10 pixels.nullHow to apply rounded corners to a UIKit or SwiftUI viewpaigeshin1991.medium.com › how-to-apply-rounded-corners-to-a-uikit-or...null
How to navigate to tab bar controller swift?
The user of your app can switch between view controllers by tapping one of the tabs in the tab bar at the bottom of the screen. A tab bar is often used to switch between different, but comparable view controllers. In the above example, the first tab represents the Home User Interface [UI].nullWorking With Tab Bar Controllers In Swift [How To] - Appy Piewww.appypie.com › tab-bar-controller-uitabbarcontroller-swift-iosnull