Overview

This is a sample iOS application with the following features:

• scroll to the last message upon entering chat window
• scroll to the last message upon receiving new message
• lift messages when keyboard is visible
• work with iOS11 "famous" adjusted content inset

Here's preview of the application running on:

• iOS 10

• iOS 11 (iPhone X)

Details

Here's a simplified hierarchy of most important parts of Chat VC:

• UITabBarController
  • UINavigationController
    • UIViewController
      • UITableView
      • SendView

The application makes use of the following classes/components in External directory:

• Keyboard
  • Provides notifications of keyboard show/hide states
  • Provides keyboard height
• TableViewCellTemplate
  • Provides an easy way to display any view inside UITableView's cell
• UIView+Embed
  • Embeds child view into parent one by binding corresponding top, bottom, left, right anchors
• UIView+NibFile
  • Allows to easily load NIB (XIB) for later embedding into host UIView