Cocoa Touch: How To Change UIView’s Border Color And Thickness?

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You need to use view’s layer to set border property. e.g:

#import <QuartzCore/QuartzCore.h>
...
view.layer.borderColor = [UIColor redColor].CGColor;
view.layer.borderWidth = 3.0f;

You also need to link with QuartzCore.framework to access this functionality.

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