Auto Layout Exercises - sammanthp007/Linux-Kernel-Development GitHub Wiki

These are a few basic and more complicated Auto Layout exercises that demonstrate view hierarchies with an average layout complexity.

Exercise 1 - Basic Auto Layout

Basic|200  Basic|200

  • Download the starter project.
  • FirstViewController is created using Interface Builder. Add Auto Layout constraints so that the following conditions are met when switching between an iPhone simulator and an iPad simulator:
    • The gray view has fixed left and right margins (i.e., grows in width), but has a fixed height.
    • The blue view is pinned below the gray view and to the right side of the superview. It has a fixed height and width.
    • The label is pinned to the left side of the superview and the left side of the blue view.
    • The red view is pinned to the bottom of the superview and is horizontally centered.
  • SecondViewController is created using programmatic view code. Add the same constraints as above using the visual formatting language.

Exercise 2 - Yelp

Yelp Before|200  Yelp After|200

  1. Download the starter project which should look like the image on the left in the simulator.
  2. Add the appropriate Auto Layout constraints in the custom cell. Here are some hints:
    • Start from the top of the cell and clear the warnings as you move down the cell.
    • You'll need to configure the Content Hugging Priority to resolve the Auto Layout warning between the title label and the distance label.
    • You'll need to configure the Compression Resistence Priority before the title will start wrapping.
    • You'll need to set maxPreferredContentWidth in any multi-line label to the width of the label in the layoutSubviews and awakeFromNib methods.
    • Remember to configure the rowHeight of the UITableView to be UITableViewAutomaticDimension