Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
-
Economics & Finance
Swift Articles
Page 39 of 40
How to lock Screen Orientation programmatically in iOS?
You might come across a scenario where you need to show the UI in a specific orientation may be Landscape or Portrait.We will be seeing how to lock orientation programmatically using Swift in iOS.Open Xcode → New Project → ViewController.swift write the below code.// Set the shouldAutorotate to False override open var shouldAutorotate: Bool { return false } // Specify the orientation. override open var supportedInterfaceOrientations: UIInterfaceOrientationMask { return .portrait }
Read MoreEmail & Phone Validation in Swift
To validate email and phone in swift language we can use multiple conditional statements like if conditions, but that’s a long process and may contain 50-100s of if statements to validate email.So instead of conditionals we’ll use Regular expression. Swift provides NSPredicates which we can use to evaluate a regular expression and test them.Let’s see how we can use regular expressions to do the same.We’ll create a function which we can use as extension of String class or UIViewController to use through out the project.Add the following code to any class in your Project, or create a separate swift class ...
Read MoreHow to subtract 1 hour from current time using Swift?
To subtract hours from a date in swift we need to create a date first. Once that date is created we have to subtract hours from that, though swift does not provide a way to subtract date or time, but it provides us a way to add date or date component in negative value. In this example we’ll see how we can achieve the same.Let’s create a date first, let it be today, let today = Date()Now to modify this date we’ll use the add function with negative value, let modifiedDate = Calendar.current.date(byAdding: .hour, value: -2, to: today)!Now to see ...
Read MoreDetect current device with UIUserInterfaceIdiom in Swift
To detect current device with iOS/Swift we can use UserInterfaceIdiom. It is an enum in swift, which tells which device is being used.The interface idiom provides multiple values in it’s enum which are.case unspecified @available(iOS 3.2, *) case phone // iPhone and iPod touch style UI @available(iOS 3.2, *) case pad // iPad style UI @available(iOS 9.0, *) case tv // Apple TV style UI @available(iOS 9.0, *) case carPlay // CarPlay style UIIn swift interfaceIdiom can be used in the following way:print(UIDevice.current.userInterfaceIdiom) if UIDevice.current.userInterfaceIdiom == .phone { print("running on iPhone") }When we run the above code ...
Read MoreHow to Add Live Camera Preview to UIView in Swift?
To add a live camera preview to our default UIView in swift we can either use AVFoundation framework of iOS SDK or native UIImagePickerController(). In this example we’ll be using ImagePicker as our aim is to present camera preview on the UIView and Imagepicker is suitable for that task. AVFoundation can be used when we need a lot of customization on our camera or different types of custom actions.To show a camera preview on the UIView we need to perform the following steps.Create a UIImagePickerController object.Conform our class to UIImagePickerControllerDelegate and UINavigationControllerDelegate.Assign delegates to the object we created in step ...
Read MoreHow to make iPhone vibrate using Swift?
To make an iPhone vibrate using swift we’ll use two different methods. First create a new project and add Four different buttons to the main View controller.Now import the AudioToolbox framework in your view controller class.For the first button add an action and write the following code as shown below:@IBAction func actionButtonOne(_ sender: Any) { AudioServicesPlayAlertSound(SystemSoundID(kSystemSoundID_Vibrate)) }This will generate a long vibrating feedback on your device. Now to create more vibration effects on devices with iOS 10 or more we’ll add methods for all four different buttons.@IBAction func actionButtonTwo(_ sender: Any) { let generator = UIImpactFeedbackGenerator(style: .heavy) ...
Read MoreHow to draw a route between two locations using MapKit in Swift?
To draw a route between two Locations on map we need to have co-ordinates of both those locations.Once we have the co-ordinates of both locations we can use the below given function to show the line between two points on map. In this example I’ll be using two random location as two points.func getDirections(loc1: CLLocationCoordinate2D, loc2: CLLocationCoordinate2D) { let source = MKMapItem(placemark: MKPlacemark(coordinate: loc1)) source.name = "Your Location" let destination = MKMapItem(placemark: MKPlacemark(coordinate: loc2)) destination.name = "Destination" MKMapItem.openMaps(with: [source, destination], launchOptions: [MKLaunchOptionsDirectionsModeKey: MKLaunchOptionsDirectionsModeDriving]) }We’ll call this function in ViewDidLoad for this tutorial to show the ...
Read MoreHow to insert new cell into UITableView using Swift?
To insert a new cell into UITableView we'll first have to create a table view cell and then add it to the table view using Cell for row at method of Table view.We can create a cell using Storyboard or by creating a nib of class UITableViewCell.In the View controller drag and drop a table view and connect it's outlet to the ViewController class.Let's create a cell in the table view we just created and create it's class, call it CustomCell, and assign the class to cell.Give it an identifier "CustomCell"Add a label in the cell and change it to ...
Read MoreHow to use Swift to run in background to provide current location?
To get background location in swift we need to go through a few stepsGet the permissions from the user, in your info.plist file add Privacy- Location always andwhen in usage Description, Privacy – When in usage description and add their respective description.After that, you need to import the CoreLocation framework which will enable you to use all the location related libraries and methods. Then you need to get permission from the user to use the location. For that, we need to create a CLLocationManager Object and get authorization.var locationManager: CLLocationManager? override func viewDidLoad() { super.viewDidLoad() ...
Read MoreHow to integrate PayU Money in iOS using swift?
payU money is a payment gateway which is more popular in Indian online markets. To Integrate payU money we need to go through a few steps. Be careful with integrating payU and do not skip any of the steps of integration.Sign Up with payU money.Once you sign up, your key & salt, merchant ID will be generated which can be found in the dashboard after you login to your payU money account.After that in the terminal application, use the below code to clone payU money.Drag and drop the PlugNPlay folder to your project.$ git clone --recursive https://github.com/payu-intrepos/PayUMoney-IOS-SDK.gitNote − If you ...
Read More