How to Upload an App Icon Xcode
Adding Images
To help you create and manage user interface elements for your app, Xcode offers several tools in improver to Interface Builder.
You create many images for your app, including icons, custom artwork, and the launch screens for different iOS devices. Some of these images are required for App Store submission. The asset catalog helps you lot manage them.
With the particle emitter editor, you can raise your app by calculation animation furnishings involving moving particles such as snow, sparks, and smoke. These furnishings are especially useful in games for iOS and Mac.
Adding App Icons and Launch Images
Create app icons for all of the operating organization versions and devices that your app supports. iOS, watchOS, and Bone X apps require different types of icons. For any platform, add the required versions of your app icons to an asset catalog in Xcode.
For an iOS app, create an icon to be displayed on a device's Home screen and in the App Store. Xcode doesn't include graphics tools for creating icons; use a graphic design app. Create several different versions of the icon for use in dissimilar situations. Your iOS app tin can include a small icon (to use when displaying search results) and a high-resolution icon (for devices with Retina displays). If your iOS app's target is universal, you also create versions of the icon for iPad and iPhone devices.
For a watchOS app, create icons for the domicile screen and any other interfaces yous support such as notifications or long looks.
For an OS X app, create a set of icons, consisting of pairs of icons (standard and high resolution) for each icon size, in pixels: 16 x 16, 32 x 32, 128 x 128, 256 x 256, and 512 10 512. The Finder uses these icons to represent your app to the user.
Piece of work with Image Assets in the Asset Catalog
When y'all create a new projection, Xcode creates an nugget catalog named Assets.xcassets. Select the asset itemize from the project navigator, and Xcode opens the catalog in the editor expanse.
The asset itemize contains a list of prototype sets. Each image set, such as AppIcon in the screenshot, contains all the versions of an paradigm that are necessary to support diverse devices and scale factors. You can add icon images to your app by dragging them to the appropriate cell in the icon set grid.
You can create additional paradigm sets, such as for buttons and other controls in your app. To create an empty paradigm set up or to import images into a new set, click the Add together push button (+) at the bottom of the image fix list. You can add folders to organize the items in the itemize. Asset catalogs also back up other types such as Sprite Atlases, Picket Complications, and Data files.
Create and Set the iOS Launch Screen File
A launch screen is displayed while your app is launching on an iOS device. The launch screen is displayed every bit soon as the user taps your app icon, and it stays on the screen until your main interface is displayed. If your app is running on iOS viii or later, the system uses a launch screen from a storyboard file and sizes it appropriately for the screen. For deployment targets prior to iOS eight, you lot add together a prepare of launch images to an nugget catalog for each of the possible screen sizes.
New projects are created with a launch screen storyboard file chosen LaunchScreen.storyboard. Alternatively, yous tin create a new launch screen file using File > New, selecting the User Interface category, and choosing a file type of Launch Screen. The launch screen uses size classes to adapt to dissimilar screen sizes and orientations; run into Building for Multiple Screen Sizes for more than data.
Because the launch screen is shown before your app is running, y'all tin can only use a single root view of type UIView or UIViewController. You are too limited to UIKit classes that do not require updating. For more information, encounter Creating a Launch Screen File .
To set the launch screen, open the Full general information tab for your target, and select the launch screen file from the popular-upwards menu.
For more aid icons, launch images, and the asset catalog, see Xcode Assist.
Create and Fix iOS Launch Images for iOS seven and Before
Yous tin easily capture screenshots for launch images on a device. On the device, configure the screen the manner you want it to appear. Then printing the device Lock and Home buttons simultaneously. Your screenshot is saved in the Saved Photos album in the Photos app. Copy the screenshot from the device to your Mac. You tin can use the iPhoto app, for example, to import the screenshot from the device and then consign the screenshot to your Mac every bit a PNG file.
To gear up the screenshot as a launch image, select the asset catalog file in the project navigator, and select the LaunchImage gear up. Drag your screenshot to the advisable cell in the filigree.
For more information on assistance icons, launch images, and the asset catalog, see Xcode Help.
Finding Aid for Interface Architect
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Source: https://developer.apple.com/library/archive/documentation/ToolsLanguages/Conceptual/Xcode_Overview/AddingImages.html
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