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iOS Articles
Page 17 of 19
Exact Radius and Size of iPhone App Icons
Every iPhone application needs some icons that are displayed when certain events occur, like when some new notification comes, or the icon for home screen or the icon that is displayed on spotlight.All these icons have different size properties but apart from their size there are some common properties they have. Let’s see them first.The icons should be in .png formatThe icons should be flat and should not have transparency.The images should be squared, without any round corners.For any iOS device the icons size for app store is 1024px * 1024pxOther app icon sizes are usually bases on 1x, 2x ...
Read MoreHow to detect which iOS version is running on the device?
When working on iOS applications, we sometimes need to know the version that's running on an iPhone device. In this article we'll learn how to find the iOS version being used, using an iOS Application.Create an iOS application and in it's viewController's view did load function write the following code.print(" System version - ",UIDevice.current.systemVersion)This will return the iOS version of the device currently in use. Like current version of my simulator is iOS 12.0 hence the result comes asSystem Version – 12.0
Read MoreWhere are iOS simulator screenshots stored?
The screenshots taken on an simulator are stored usually on desktop of the system that you are using.There are multiple scenarios in which screenshots could have been taken, some of them are mentioned below.When the images are taken using "Command" + S, or from File menu's New Screenshot option, They are usually stored by name similar to "Simulator Screen Shot - iPhone 7 Plus - 2018-12-26 at 18.18.14" which consists of Simulator running currently followed by date in YYYY-MM-DD at HH:MM:SS format.If they are taken with mac's "Command + shift +3" or "command + shift + 4" buttons, they are ...
Read MoreHow to compare two NSDates in iPhone/iOS?
In this article we'll see how to compare two NSDates in swift. First of all we'll need to create two NSDates.We'll do it in playground instead of simulator this time.First Let's create two different dates.let dateOne = NSDateComponents() dateOne.day = 5 dateOne.month = 6 dateOne.year = 1993 let dateTwo = NSDateComponents() dateTwo.day = 4 dateTwo.month = 2 dateTwo.year = 1995Using these date components we'll create dates and then compare themlet cal = NSCalendar.current let FirstDate = cal.date(from: dateOne as DateComponents) let secondDate = cal.date(from: dateTwo as DateComponents)Now to compare them we'll use a if condition.if secondDate!.compare(firstDate!) == .orderedAscending { ...
Read MoreWhat is difference between UITableViewController and UIViewController?
UItableViewController and UIViewController are two different objects of iOS UIKit framework. Both are used for different purpose.A UIViewController class manages a ViewContoller which is responsible for actions that happen within that View controller. This class is aware of actions that happen on view controller, like ViewDidLoad, ViewWillApper, ViewDidAppear, ViewWillDisapper, ViewDidDisapper.Whereas, A UITableViewController is responsible for managing a table, it's data and it's events using UITableViewDataSource, UITableViewDelegate.A UITableViewController conforms to UIViewController, UITableViewDataSource and UITableViewDelegate to implement table view.Below is an example of a class implementing UIViewController.class ViewController : UIViewController { @IBOutlet weak var sampleView: UIView! ...
Read MoreHow to set background for Navigation Bar in iOS?
To set the background color for a navigation bar we can either do it programmatically or through the storyboard if it is on storyboard.Method 1Let's see how to change the background color of a navigation bar through the storyboard editor.Create a new project, select it's view controller and embed in navigation controller.Select the navigation bar and go to It's attribute inspector.This is how it looks in the Xcode 10. You can select the tint color from there and it will be changed for the navigation controller.Method 2Programmatically changing the navigation background.To programmatically change it, go to the view controller and ...
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 develop or migrate apps for iPhone 5 screen resolution?
At the release of iPhone 5, it’s resolution and aspect ratio was different (640 x 1136 pixels), hence it was tough to migrate applications from iPhone 4 sizes to the newer iPhone. But later with the release of iOS 8, size classes and abstract screen sizes were also introduced to make it easier. As of now, applications for almost all sizes can be developed with Xcode storyboard editor.Apart from storyboard editor, you can also change the launch image. Let’s see the first method.Change the launch image to Default-568h@2x.png. Change the size to be 1136x640.Go to info.plist and remove the value ...
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 ...
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