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