Add all 10 png icons to your Assets.xcassets's AppIcon image. Delete derived data if you have launched the app before, otherwise it will continue to show the default icon. Run the app; it should now show your icon in the Dock, Application Switcher, and anywhere else it should appear.
Application Icons Windows 10
After the script has been created do the following: Find the source app with the icon you want. Get Info of the source app (cmd-i). Click on the icon inside the source app's info window (Not the one in the big Preview section at the bottom, if you have one of those; the little one in the top-left corner.). Copy it (cmd-c)Get Info of the automator script (i.e., the destination app) (cmd-i). Choose an Image. Choose an image you would like to use. When searching the image in Google.
You can use the following procedure to change an icon associated with the selected application directly from the Results pane of the Application node in the Application Virtualization Server Management Console.
To change an application icon
Right-click the application, and select Properties from the pop-up menu.
On the General tab, click the Browse button next to Icon Path.
Select the desired icon, or browse to another location to select the icon. After you've selected the icon, click Open. Click OK to apply.
The new icon appears in the Results pane. The new icon is also displayed in the menus and in the client desktop notification area.