I haven’t tested this, but have you tried calling [self layoutIfNeeded] in the 
completion block of [self presentViewController:animated:completion]?

Saagar Jha

> On Mar 20, 2017, at 16:09, Carl Hoefs <newsli...@autonomy.caltech.edu> wrote:
> 
> iOS 10.2.1
> 
> I'm using UIAlertController -addTextFieldWithConfigurationHandler: to display 
> an alert with a textfield. 
> 
> Is there any way to shorten the width of the displayed textfield? I've tried 
> setting its frame/bounds, but it has no effect.
> 
> -Carl
> 
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