iOS7 Auto Layout, View Resize and iAds

Question

I\'m using Auto Layout in my iOS 7 project with the following view hierarchy

Main View
-Container View
---Button
---Button
---ImageView
-Banner View

Answer 1

The response from rdelmar was enough for me to get this working, but I'll add a few things. With auto layout on, there is no need to set the banner's size with setAutoresizingMask:UIViewAutoresizingFlexibleWidth (and currentContentSizeIdentifier is deprecated in iOS 6). Just create the banner object and then pin it into position using the procedure outlined by rdelmar and auto layout takes care of the horizontal sizing.

Here are the constraints I used:

// pin sides to superview
[self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-0-[_bannerView]-0-|" options:0 metrics:nil views:NSDictionaryOfVariableBindings(_bannerView)]];

// set height to a constant
[self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:[_bannerView(==66)]" options:0 metrics:nil views:NSDictionaryOfVariableBindings(_bannerView)]];

// pin contentView to bannerView with 0 length constraint
[self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:[_contentView]-0-[_bannerView]" options:0 metrics:nil views:NSDictionaryOfVariableBindings(_contentView,_bannerView)]];

I was concerned about setting a height constraint because the height of the banner will change depending on platform and/or orientation. But it doesn't seem to make any difference what value I set for the height constraint - the banner is always shown with the correct height, so I don't even bother setting it. I am assuming this because there is an intrinsic sizing to the height of the ad banners.