Here comes the easy part--the iMessage app with sticker pack. I call it the easy part because, believe it or not, you can create a sticker pack app extension without even writing a single line of code. Just prepare your fancy stickers, create the app extension in Xcode, drag and drop your stickers in Xcode, and there you go. I hear you saying wow, and I bet you are eager to give it a shot.
Integrating iMessage app with sticker pack
Getting ready
To create an iMessage app extension, you need to have the Xcode 8.0 or later version. Right now, while I'm writing this chapter, it's available in the beta version. Maybe, while you are reading this chapter, it's available as an official release.
Apple engineers have...
