In iOS if we create any app its necessary to set beautiful image as an app icon because the same icon will appear in iOS devices home screen whenever our iOS app has been installed by users. Following is the sample image which showing different iOS apps with icons.
If we set an icon for ios apps that will help users to identify app easily.
For any app we need to set both small and large app icons because the small icon will appear on devices home screen and throughout the system once our app is installed and the large icon is used by App store.
|Device||Small Icon Size||Large Icon Size|
|iPhone 6s Plus, iPhone 6 Plus||120px x 120px||87px x 87px|
|iPhone 6s, iPhone 6, iPhone SE||80px x 80px||58px x 58px|
|iPad Pro, iPad, iPad mini||80px x 80px||58px x 58px|
Now we will see how to add or set iOS app icon for swift applications in xcode with example.
To create new project in iOS open Xcode from /Applications folder directory. Once we open Xcode the welcome window will open like as shown below. In welcome window click on the second option “Create a new Xcode Project” or choose File à New à Project.
After selecting “Create a new Xcode project” a new window will open in that we need to choose template.
The new Xcode window will contain several built-in app templates to implement common type of iOS apps like page based apps, tab-based apps, games, table-view apps, etc. These templates are having pre-configured interface and source code files.
For this iOS App Icon example, we will use most basic template “Single View Application”. To select this one, Go to the iOS section in left side à select Application à In main area of dialog select “Single View Application” and then click on next button like as shown below.
After click Next we will get window like as shown below, in this we need to mention project name and other details for our application.
Product Name: “App Icon in iOS”
The name whatever we enter in Product Name section will be used for the project and app.
Organization Name: “Tutlane”
You can enter the name of your organization or your own name or you can leave it as blank.
Organization Identifier: “com.developersociety”
Enter your organization identifier in case if you don't have any organization identifier enter com.example.
Bundle Identifier: This value will generate automatically based on the values we entered in Product Name and Organization Identifier.
Select language type as “Swift” because we are going to develop applications using swift.
Choose Devices options as Universal it means that one application is for all apple devices in case if you have any specific requirement to run app only for iPad then you can choose the iPad option to make your application restricted to run only on iPad devices.
Use Core Data: Unselected
This option is used for database operations. In case if you have any database related operations in your application select this option otherwise unselect the option.
Include Unit Tests: Unselected
In case if you need unit tests for your application then select this option otherwise unselect it.
Include UI Tests: Unselected
In case if you need UI tests for your application then select this option otherwise unselect it.
Once you finished entering all the options then click on Next button like as shown below.
Once we click on Next button new dialog will open in that we need to select the location to save our project. Once you select the location to save project then click on Create button like as shown below.
After click on Create button the Xcode will create and open a new project. In our project Main.storyboard and ViewController.swift are the main files which we used to design app user interface and to maintain source code.
Main.storyboard - Its visual interface editor and we will use this file to design our app user interface
ViewController.swift - It contains source code of our application and we use this file to write any code related to our app.
Now in project select Main.storyboard file the Xcode will open visual interface editor like as shown below.
Now select ViewController.swift file in your project that view will be like as shown below.
To add icon for application, click on Assets.xcassets in your project navigator à then Click on AppIcon à then It will show empty app icon set like as shown below. Now drag the right sized image (.png) from Finder and drop into every blank in the Spotlight boxes.
If we drag and drop app icon in spoltlight that will be like as shown below
Now we will run and check the output of application. To run application, select the required simulator (Here we selected iPhone 6s Plus) and click on Play button, located at the top-left corner of the Xcode toolbar like as shown below.
Following is the result of iOS app icons example in swift. If you observe below result app icon is set for the application which we created in swift. If you want to see the app icon press Ctrl+Shift+H button while running app.
This is how we can set icon for iOS applications in xcode editor based on our requirements.