In this tutorial, you will learn how to use index along with element in Array loop. When iterating over an array, if you need the index for each element along with its value, you can use the enumerated() method to iterate over the array Create an Array First, let’s create an array with some elements.…
Read More Loop Over Array of Elements with IndexLets’ create an Array with three elements first. var myArray = [“Swift”, “Objective-C”, “PHP”] Now we can loop through all elements in Array for arrayElement in myArray { print(arrayElement) } Loop through an array of elements and print out element index as well as element value. for (index, element) in myArray.enumerated() { print(“Element index: \(index).…
Read More Loop Through Array Elements in SwiftThis tutorial will teach you how to create a simple Spring Cloud API Gateway Global Pre-filter and Post-filter classes. Global filters are executed for every route defined in the API Gateway. The main difference between the pre-filter and post-filter classes is that the pre-filter code is executed before Spring Cloud API Gateway routes the request to a…
Read More Spring Cloud API Gateway Global Filter ExampleIn this tutorial, you will learn how to load a list of images from a remote URL in Flutter. The remote URL that we are going to use will return a list of images in JSON format. We will create a Flutter mobile application that will display this list of images in a GridView. For…
Read More Loading Images from a Remote URL in FlutterIn this Swift code example, you will learn how to make the music playback slider smoothly move as the music continues to play so that the user is visually aware of how much of the music file has been already played and how much is left to play. Create AVPlayer and AVPlayerItem Create UIButton programmatically…
Read More AVPlayer. Add Periodic TimeObserver to Update Music Playback SliderWhen building a mobile app you have to consider that not every user can or will interact with your app the same way. Having said that, you have to consider users with disabilities and what are the ways to make your Flutter app more accessible for those users. Implementing accessibility correctly can enhance the quality…
Read More Accessibility Example In FlutterLike other data types such as String, Double, Float, Boolean, Array, Dictionary, Struct, and Class, Closure is used broadly in Swift. Closure can store references to any constants and variables. In this short Swift code example, you will learn how to declare a simple Closure in Swift. Declare a Closure Call Closure Syntax Following is a generic…
Read More Declare a Closure in SwiftIn this tutorial, you will learn how to add a WebView to your Flutter application. What Is WebView? WebView is a Flutter Widget that allows your mobile application to display web content. This component is pre-installed on your device and should be kept up to date to ensure you have the latest security updates and other bug fixes.…
Read More WebView Example In FlutterThe Swift code example below demonstrates a couple of ways how to check if an Array of elements is empty. To be a little more specific this code will demonstrate how to: Create an array with 5 elements, Remove all elements from Array, Check if Array is empty, Check if the number of elements in…
Read More Check if Array is Empty in SwiftWith this Swift code example, I would like to share with you how to sort an array of custom objects in Ascending and Descending order. Create a custom Swift class with the name “Friend”, Create an Array that can hold custom objects of type Friend, Sort Array of custom objects in Ascending and Descending order,…
Read More Sort Array of Custom Objects in SwiftOne way to ensure that an HTTP request to a web service endpoint contains an Authorization JWT token is to configure a gateway route to require an Authorization header. If the HTTP request does not contain an Authorization header, Spring Cloud API Gateway will not even route this request to a destination microservice. We can…
Read More The Header Predicate in Spring Cloud API GatewayThere are a few different ways of how to create an Array with default values in Swift. Below are a few Swift code examples of creating an Array. Each example creates an array with some initial values. Create an Array of Strings var appleProgrammingLanguages: [String] = [“Swift”, “Objective-C”] Thanks to Swift’s type inference, you don’t…
Read More Create an Array with Default Values in SwiftIn this tutorial, we will create a small Flutter function that calls android’s Kotlin native code to read the value of the battery level. Flutter uses a flexible system that allows you to call platform-specific APIs whether available in Kotlin or Java code on Android. Flutter’s built-in platform-specific API support does not rely on code…
Read More Calling Android Native Code in FlutterThis tutorial will teach you how to configure your Spring Cloud API Gateway to automatically create routes based on services registered with discovery clients like Eureka, Consul, or Zookeeper. For a step-by-step series of video lessons, please check this page: Spring Boot Microservices and Spring Cloud. Enable Discovery Locator A quick way to enable Spring Cloud…
Read More Spring Cloud API Gateway Automatic Mapping of RoutesIn this tutorial, you will learn how to implement Facebook Audience Network in Flutter. If you are an indie developer and want to generate some side revenue you can do it by adding Facebook ads to your Flutter mobile App. 1. Adding Package To implement ads to your Flutter App there’s a special package to…
Read More Facebook Audience Network In Flutter