iOS (originally iPhone OS) is a mobile operating system created and developed by Apple Inc. and distributed exclusively for Apple hardware. It is the operating system that presently powers many of the company’s mobile devices, including the iPhone, iPad, and iPod touch.
If you are developing macOS catalyst app then you may be wondering how to conditionally write code specifically for iOS and iPad OS or macOS 10.15 catalyst app.
Here is how to do it.
Use below code to declare code specifically written and that will compile only for iOS and iPadOS.
Here is how to set UINavigation Bar Large Title Text Colour (Foreground Colour) in iOS 11, 12, 13 and above,
Declare Navigation Bar Title Text & Large Title Settings like this in your View Controller’s ViewDidLoad() Method:
self.navigationItem.title = "Home" self.navigationController?.navigationBar.prefersLargeTitles = true self.navigationController?.navigationItem.largeTitleDisplayMode = .automatic
Now write below line inside ViewDidLoad() to get Large Title Foreground colour as White Colour like this:
Here is example if you want to inset UIImageView so that image does not fit edge to edge of the UIImageView
Note: Use of latest version of Xcode & Latest version of Swift Programming Language is preferred.
Here is step by step procedure to achieve designed result:
Step 01: Create Apple iOS Project in Xcode. Add UIImageView to View Controller in Storyboard.
Step 02: Now Connect that UIImageView to View Controller Swift File. It will look something like this.
@IBOutlet weak var imageView: UIImageView!
Step 03: Now add following code in ViewDidLoad Function of your View Controller File.
While searching for answer on web for how to give CurlUp / CrossDissolve / FlipFromRight / FlipFromLeft / CurlDown / FlipFromTop / FlipFromBottom transition effect for UITabBar Tab Switch.
I found out this answer but with bug or black screen when you tap on same tab twice i.e. destination and current tab is same.
So I solve this issue with my logic and additional if and else statement.
So here is final answer without any bug.
Step 01: Add this two classes as Super Class to your UITabBarViewController
UITabBarController, UITabBarControllerDelegate
Step 02: Now add following code to your viewDidLoad Function in your UITabBarViewController
self.delegate = self
Assumption: I assume your have embedded in UINavigationBar in your Apple iOS App inside Storyboard.
If you want to mimic Apple Safari iOS App’s behaviour of hiding navigation bar on scroll you can do it in just single line of code without any hassle.
You have to add following code in your View Controller’s viewDidAppear function where you have added UINavigationBar in storyboard:
Assumption: I assume you have deployed UITabBarViewController in your iOS App. And now you want to change UITabBar Tint color, UITabBar Item’s Tint color and also UITabBar’s unselected icon’s tint color.
Do this is just simple as single line of code.
Below code will go to your Apple iOS app’s AppDelegate.swift file under ‘didFinishLaunchingWithOptions’ function.
So your code will look something like this.
Assumptions: I assume you have already embedded in UITabBarViewController for your ViewController in Interface Builder. I also assume you have three tab bar items with individual view controllers and further you have created images assets with your icon images.
Solution is simple you have to copy following code in your current View Controller’s ViewdidLoad method.
Let’s assume you are using Tab Bar View Controller in your Xcode Apple iOS App Project.
You have embedded in your view controller with UITabBarViewController.
Say, you are using 3 Tab Views.
In Swift programming Language number counting starts with 0 so you will write code like this in your respective view controller’s viewDidLoad function.
It’s every app developers dream time when he develops and then uploads his app to Apple App Store using Xcode.
At that moment of time while uploading your app if you are stuck in one place where Xcode organiser says “Uploading to App Store – Authenticating with iTunes Store” & there is no further progress.
Then here is how to solve this!
Just open Terminal App from your Applications > Utilities > Terminal.
Paste below code in Terminal & hit return key.
While we use app development methodology like MVC (Model, View, Controller) we encounter problem while navigating from one view to another how to change text of back button which get populated automatically by Apple iOS Operating System.
You can use below method in viewDidLoad method of your root view:
navigationItem.backBarButtonItem = UIBarButtonItem(title: "Back", style: .plain, target: nil, action: nil)
Here is another way of doing the same which can be done in ‘prepare for segue’ method of your app: