Add a border to any UIView

Adding a border to any UIView can be accomplished very simply by accessing the UIView underlying layer and setting the boderColor and borderWitdth attributes :

UIView *view = [[UIView alloc] init];
...
//Add a white border 
view.layer.borderColor = [UIColor colorWithWhite:1.0f alpha:1.0f].CGColor;
view.layer.borderWidth = 1.0f; //make border 1px thick

Enjoy :)