React Native Typescript template
yarn setIcon
Open Android Studio
yarn androidStudio
Right click on the app folder, then click on New and then click on Image Asset. If you don't see this menu, be sure that you got the latest gradle version (should work with gradle >=3.4.2)
In the Icon Type field select Launcher Icons (Adaptative and Legacy)
In the path field, select your image file
Once done, click on the Next button and then on the finish button
yarn setSplash
Open XCode project
yarn xcode
and change LaunchScreen.xib as you want