In Swift, there are two different concepts i.e. protocols and superclasses are used to build the application by writing reusable and flexible code. They both are different concepts but somehow they have some common features. You can define the protocol with methods and properties to achieve any particular feature. In the same way, you can create a class with methods and properties to hold some information. Swift provides flexibility in that class, structure, and enums can conform to a protocol. A superclass is also a class type. It can be inherited from other classes in a similar way. In this ... Read More

In this article, you will learn about how to create a button prograticamtilly in the Swift language. There are different ways to create a button object programmatically in iOS. Let's explore some of them with an example. We will see the following ways to create a button − Step 1 − In this step, we will create a button object and customize it later when required. Step 2 − In this step, we will create a button object using a lazy keyword. Step 3 − In this step, we will create a button object and set the frame later. ... Read More

In Swift, you can use the layer property of a UIButton to set the corner radius of its border. You can use the layer (CALayer) property to apply the border width and color to the button. Also, the same property provides access to the cornerRadius property to make the button rounded. We will use the following steps to make a button rounded with a border Step 1 − In this step, create a button object with basic customization. Step 2 − In this step, add a border and corner radius to the button. Step 3 − In this step, make ... Read More

To change the text of a UIButton in Swift, you can use the setTitle() method of the button. This method takes an argument to set the button title for a particular state. Generally, we used the normal button state. We will change the text of the button programmatically by following the below steps − Step 1 − In this step, we will create two buttons (login and T&C) and add basic customization. Step 2 − In this step, we will change the text of the login button. Step 3 − In this step, we will change the text of the ... Read More

This article explains how to go back from a view controller programmatically using Swift language. You will see an example of using the popViewController method to go back to the previous controller. What is ViewController in Swift? In Swift, a UIViewController manages the interaction between the user interface and the logic data. It is responsible for handling user interactions with the user interface. The class is part of the UIKit framework and provides some functions and properties along with a life cycle. This class is the most common class used in iOS development. To go back to a previous view ... Read More

In this article, you will learn about how you can hide the keyboard while editing text in the UITextField. In this example, you will hide the keyboard by pressing the return button on the keyboard. In the Swift language, UITextField class provides us with some delegate methods. They called on different actions or events. We will implement one of the delegate methods to hide the keyboard. Also, you will see how to change the return type if required. In this example, we will hide the keyboard in UITextField to enter an email address by following the below steps − ... Read More

In Swift, this is very easy to change the font of a button. You can use the titleLabel property of the button which is of type UILabel class. This property provides another property called font to apply the desired font. Let’s see some examples of changing the font. We will follow the below steps to change the font of a button − Step 1 − Initially, we will do the basic setup with button creation and customization. Step 2 − In this step, we will change the system font with size and weight. Step 3 − In this ... Read More

A matrix is an arrangement of numbers in rows and columns. Matrix can be of various type like square matrix, horizontal matrix, vertical matrix etc. So here we print the right diagonal of square matrix. Square matrix is a matrix in which the number of rows and columns are same. For example 3x3, 5x5, 7x7, etc. In this article, we will learn how to write a swift program to print the right diagonal matrix. Algorithm Step 1 − Create a function. Step 2 − Run for-in loop to iterate through each element of the matrix. Step 3 − Check for ... Read More

In this article, we will learn how to write a swift program to print the left diagonal matrix. A matrix is an arrangement of numbers in rows and columns. Matrix can be of various type like square matrix, horizontal matrix, vertical matrix etc. So here we print the left diagonal of square matrix. Square matrix is a matrix in which the number of rows and columns are same. For example 3x3, 5x5, 7x7, etc. Algorithm Step 1 − Create a function. Step 2 − Run for-in loop to iterate through each element of the matrix. Step 3 − Check ... Read More

A number is a perfect cube if the result of the three time multiplication of a whole number is the number itself. For example: number 5 is a per Number = 125 125 = 5*5*5 Here 125 is a perfect cube. Number = 98 Here 98 is not a perfect cube. In this article, we will learn how to write a swift program to check whether a number is a perfect cube or not. Method 1: Using user defined function To check if the given number is a perfect cube or not, we create a function that check each number ... Read More