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Articles by Nitin Aggarwal
Page 5 of 14
How to play a sound using Swift?
In Swift, there is a framework called AVFoundation that provides flexibility to play audio files. This framework provides you with a class called AVAudioPlayer to manage audio play and pause. In this article, you will learn how to play a sound using the AVAudioPlayer class in Swift. AVFoundation This framework is a very powerful multimedia framework in Swift. This provides you with most of the features to work with media files like audio, video, and other types of media files. This framework uses some common classes to manage media files. AVPlayer − This is a class that supports high-quality ...
Read MoreHow to get a unique device ID in Swift?
In Swift, you can use the UIDevice class to get a unique device ID. In this article, you will learn how to get a unique device ID using the identifierForVendor property in Swift. What is the UIDevice Class? Swift's UIDevice class gives access to device information like as name, model, system version, and unique identifier. Here's a rundown of some of the most significant attributes and methods of the UIDevice class − current − The current device object is returned by this class attribute. name − This property returns the device's name. model − The model of the device, ...
Read MoreHow do you create a Swift Date object?
In Swift, there is the Date class to work with all kinds of date formats. You can manipulate and format date objects using the Date class. There are other supported classes like DateComponents, DateFormatter, etc that help you format date objects from one type to another type. Let's learn about dates with some examples. In Swift, you can create a Date object using the Date() initializer, which returns the current date and time − let currentDate = Date() Creating a Date Object From a String Representation You can create a Date object from a string representation of a date ...
Read MoreHow do I concatenate strings in Swift?
In Swift, you can use the "+" operator and join function to join the strings. You can concatenate multiple strings using this operator. In this article, we will see some examples of how to concatenate the strings. Here are several examples of using the operator and in-built functions. Algorithm Step 1 − Create the strings Step 2 − Combine both strings using the given function Step 3 − Print the input and output string on the console Example 1 In this example, we will see an example of adding two strings with a space. import Foundation let ...
Read MoreHow can I convert string date to NSDate?
In Swift, you can use the DateFormatter class to convert a string date to a date object. This class provides date conversion properties and methods. In this article, we will see some examples of date conversions. DateFormatter Class Swift's standard library has a class that is used to convert dates. It may be used to change a string into a date object and the other way around. To parse date objects in various formats, this class offers attributes and methods. You must build an object of the DateFormatter class in order to transform a string to a date object and ...
Read MoreWhat is the Swift equivalent of respondsToSelector?
In Swift, the equivalent of the Objective-C method respondsToSelector is the responds property of the NSObject class. To check if an object responds to a particular selector, you can use the responds(to:) method which is declared in the NSObjectProtocol. Here's the syntax − if objectName.responds(to: #selector(methodName)) { // do something if the object responds to methodName } else { // do something else if the object doesn't respond to methodName } In this syntax, objectName is the object that you want to check, and methodName is the selector that you want to check ...
Read MoreWhy is the Convenience Keyword Even Needed in Swift?
In Swift, you can create an additional initializer to provide default values for the properties. You can use the convenience keyword to add this functionality. Let's look at some examples of how to use a convenience initializer in the Swift language. What is a convenience initializer in Swift? In Swift, a secondary initializer in a class that provides extra or alternative ways to create an instance of that class is marked with the convenience keyword. The initialization procedure is streamlined and made simpler, which makes it easier for the developer to deal with the class. The designated initializer of the ...
Read MoreWhat\'s the equivalent of NSLocalizedString in Swift?
In real iOS applications, you often need to support localization to ensure the app's accessibility around the world. By incorporating localization into your app, you can gain more users. In Swift, we use the NSLocalizedString function to create a localized string. What is localization? Localization is the process of allowing various language support in your apps. Instead of utilizing the software in a single language, it helps to create a more localized experience for users. Localization will be quite simple to integrate in your application. Apple offers a totally native method for integrating localization in your program.Syntax The syntax for ...
Read MoreSwift: Pass an array by reference?
In Swift, you can pass an array by reference in a function as an argument using inout keyword. In Swift, arrays are value types by default. In other words, they pass a value rather than a reference. If you pass an array to a function as an argument, it makes a copy and passes that copy to the function. First, let's understand what happens when we pass an array in a function as a value. func passByValue(_ array: [Int]) { array.append(100) } let numbers = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] passByValue(numbers) ...
Read MoreSwift JSONDecode decoding arrays fail if single element decoding fails
In Swift, working with JSON objects is very easy with the JSONDecoder class. It is always necessary to create model classes or structs with the Codable protocol. One single mistake leads you to fail to decode the complete JSON object. Let's explore some examples to understand when this failure might occur and how you can handle it in Swift. What is the JSONDecoder class? The JSONDecoder class is then used to parse the JSON data from the file into an instance of the given Type either a class or structure. The decode(_:from:) method is used to deserialize the JSON data, ...
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