Change frame programmatically with auto layout

Let your UITableView constraints to bottom layout is set to 0, make an IBOutlet. Now let your GADBannerView height is 40 so change your outlet.constant = 40; For more about how to make IBOutlet and change its value have a look into this or this hope this will help.

Edit: For those who seeking for example, follow these simple steps (Because this is accepted answer, I think it is worth to have an example. Credit to @manujmv for this example)

1. Create a height constraint for your view in your interface.

2. Then add an IBOutlet object in your class for this constraint.
   For example:

   @property (weak, nonatomic) IBOutlet NSLayoutConstraint
   *heightConstraint;

Connect this object in your connection panel.

3. Then change the value of this constraint whenever you needed

   self.heightConstraint.constant = 40;