Using iMessage apps will let users use your apps seamlessly from iMessage without having to leave the iMessage. Your app can share content in the conversation, make payment, or do any specific job that seems important or is appropriate to do within a Messages app.
Integrating iMessage app with iMessage app
Getting ready
Similar to the Stickers app we created earlier, you need Xcode 8.0 or later version to create an iMessage app extension and you can test it easily in the iOS simulator. The app that we are going to build is a Google Drive picker app. It will be used from an iMessage extension to send a file to your friends just from Google Drive.
Before starting, ensure that you follow the instructions in Google Drive API for...
