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Swift Articles
Page 37 of 40
How to remove border in navigationBar in swift?
To remove the border from a navigation bar in swift, we just need to add a few lines of code. Let’s see how the navigation bar looks when we run it without changing anything.Now let’s try to hide the line/ border shown in the above result.The navigation bar has two things that give it the default view of a grey shadow along with bottom line as shown above. One is the background image, and the other is the shadow image.First, we’ll hide the shadow image, by setting it to empty image and see how it looks.In your viewDidLoad add the ...
Read MoreHow to use UICollectionView in Swift?
To use collection view in swift, first, we need to create a collection View. We can either drag and drop it to the storyboard, or we can make it programmatically. After that, we need to confirm our class to UICollectionViewDataSource and UICollectionViewDelegate. Also if we need custom cell size and layouts, we need to confirm it to UICollectionViewDelegateFlowLayout.Let’s see the step required to create a collection View programmatically.func initCollection() { let layout = UICollectionViewFlowLayout() layout.itemSize = CGSize(width: 50, height: 50) let collection = UICollectionView.init(frame: self.view.frame, collectionViewLayout: layout) collection.dataSource = self collection.delegate = self collection.backgroundColor ...
Read MoreHow to create a Custom Dialog box on iOS App using Swift?
To create a dialog box in swift we’ll make use of UIAlertController which is an important part of UIKit. We’ll do this with help of an iOS application and a sample project.First of all, we’ll create an empty project, then inside its default view controller, we’ll perform the following operations.We’ll create an UIAlertController object.let alert = UIAlertController.init(title: title, message: description, preferredStyle: .alert)We’ll create an actionlet okAction = UIAlertAction.init(title: "Ok", style: .default) { _ in print("You tapped ok") //custom action here. }We’ll add the action to the alert and present italert.addAction(okAction) self.present(alert, animated: true, completion: nil)Now we’ll convert this ...
Read MorePush segue from UITableViewCell to ViewController in Swift
To create a segue from a UITableViewCell to another View controller, we’ll do it like any other ViewController to ViewController segue. We’ll do this with help of an example here.First Create a project, delete the View Controller from storyboard and add One Table View Controller and one View Controller in the storyboard.There will be one prototype cell in the Table View Controller by default. Click on it, go to its attribute inspector and give it “cell” as Identifier.Now from the prototype cell, press control and drag to the Second View Controller and select show from there.The storyboard should look like ...
Read MoreCapture picture from iOS camera using Swift
To capture pictures from a camera in swift we can use AVFoundation which is a framework in iOS SDK, but we should try to avoid using it until we need a lot of custom features in our camera application. In this example, we’ll only capture a picture from the camera and display it on the view. We’ll be using image picker in this example instead of AVFoundation.First, create a project and add an image view on its view Controller in the storyboard. Create the outlet in its class. Now inside the ViewController class conform it to −class ViewController: UIViewController, UIImagePickerControllerDelegate, ...
Read MoreHow to download a video using a URL and save it in an photo album using Swift?
To download a video from a URL in swift we need to perform a few steps while keeping a few things in mind.Points to be noted here are, We’ll be making use of internet to download video, hence we need to allow permissions for App transport security in our Info.plistWe’ll need to save the downloaded video to Photos app, hence photos permission is required.Video should always be downloaded in background as it may prevent us from using the app if downloaded on foreground.Now, we’ll use the below code to save a video from a random link in our Device. You’ll ...
Read MoreHow to detect shake gesture using Swift?
To detect a shake gesture in iOS UIKit provides three different methods, let’s see them one by one.Method 1 − When the shake gesture begins.override func motionBegan(_ motion: UIEvent.EventSubtype, with event: UIEvent?) { // code you want to implement }Method 2 − When the shake gesture ends.override func motionEnded(_ motion: UIEvent.EventSubtype, with event: UIEvent?) { // Code you want to implement. }Method 3 − when the shake gesture is cancelled.override func motionCancelled(_ motion: UIEvent.EventSubtype, with event: UIEvent?) { // code you want to implement. }Now let’s add some code in our motionBegan method, override func motionBegan(_ motion: UIEvent.EventSubtype, with event: ...
Read MoreHow to Ping External host from Swift in iOS?
Sometime you may require to ping an external website and check whether it’s up and running before you do any processing or fire request on the same.Here we will be seeing how to check whether the external website is up and running.Let’s being by Creating new projectStep 1 − Open Xcode → New Project → Single View Application → Let’s name it “PingMe”Step 2 − Open ViewController.swift and add the function checkIsConnectedToNetwork() and add the following code.func checkIsConnectedToNetwork() { let hostUrl: String = "https://google.com" if let url = URL(string: hostUrl) { var request = URLRequest(url: ...
Read MoreDynamically change TableView Cell height in Swift
To change the height of tableView cell in ios dynamically, i.e resizing the cell according to the content available, we’ll need to make use of automatic dimension property. We’ll see this with the help of an sample project.Create an empty project and go to it’s viewController class, conform it to UITableViewDataSource and UITableViewDelegate.Now, In the below code, we will first create a table, then register a cell for that table, and add some table properties.We’ll set the table view delegate and table view datasource.Finally we’ll add the table view to view. Then we’ll call this function inside the viewDidLoad method ...
Read MoreHow to make an HTTP request on iOS App using Swift?
To make an http request in iOS we’ll make use of DataTask and sessions. We’ll create configuration, sessions, url, request, and dataTask objects. Let’s see the steps that we’ll go through.The HTTP request can be of different types, it depends on what kind of request we want to make to our server. Below are the basic types of requests.“GET”, ”POST”, ”PUT”, ”DELETE” , we can make use of any of these according to our API. The basics remain same for each kind of request, which are shown below. Let’s see these examples with DELETE type of request.First of all we ...
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