how to set visibility GONE like android in IOS?

How to Set Visibility GONE Like Android in iOS

Understanding the Concepts

In Android, the “GONE” visibility setting effectively removes a view from the layout, making it invisible and not taking up any space. This is achieved by setting the view’s visibility property to “View.GONE”. iOS doesn’t have a direct equivalent to “GONE”, but we can achieve a similar effect using a combination of techniques.

iOS Techniques for Hiding Views

• Hidden Property:

The simplest approach is to set the view’s `isHidden` property to `true`. This hides the view without removing it from the layout. However, the view still occupies space in the layout, which might affect the positioning of other elements.

myView.isHidden = true

• Alpha Property:

Setting the view’s `alpha` property to 0 makes it completely transparent. Like `isHidden`, the view still occupies space in the layout. This is useful for fading out elements or creating a more subtle disappearing effect.

myView.alpha = 0.0

• Remove from Superview:

For a more permanent removal, you can remove the view from its parent view using the `removeFromSuperview()` method. This effectively removes the view from the view hierarchy, making it inaccessible and not taking up any space.

myView.removeFromSuperview()

Comparison Table:

Choosing the Right Approach

The best approach depends on the specific needs of your application. If you need to permanently remove a view from the layout and free up space, use `removeFromSuperview()`. If you need a temporary hiding effect, consider using `isHidden` or `alpha` depending on the desired visual outcome.

Example: Using Hidden Property

import UIKit

class ViewController: UIViewController {

    @IBOutlet weak var myView: UIView!

    override func viewDidLoad() {
        super.viewDidLoad()
    }

    @IBAction func hideViewButtonTapped(_ sender: Any) {
        myView.isHidden = true
    }
}

This code snippet demonstrates how to hide a view named “myView” by setting its `isHidden` property to `true` when a button is tapped.

Conclusion

While iOS doesn’t have an exact equivalent to Android’s “GONE” functionality, you can achieve a similar effect using `isHidden`, `alpha`, or `removeFromSuperview()`. Understanding these techniques and choosing the appropriate approach based on your application’s requirements will allow you to manage the visibility of your views effectively in iOS.