When setting the frame of a UILabel, is it possible to set it to the vertical and horizontal center of the superview in code?

Question

Like, CGRectMake(), but have it specify the center, both horizontally and vertically?

You want the frame to be the same size as the superview, then center it? http://stackoverflow.com/questions/1054558/vertically-align-text-within-a-uilabel?rq=1 — rog, May 19 '13 at 20:33

score 3 · Accepted Answer · answered May 19 '13 at 20:36

3

Get the dimensions of the containing view.
Get the dimensions of the view to be inserted.
x_position = width_of_containing_view / 2.0 - width_of_inserted_view / 2.0
y_position = height_of_containing_view / 2.0 - height_of_inserted_view / 2.0

answered May 19 '13 at 20:36

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score 0 · Answer 2 · answered May 19 '13 at 21:32

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You can also do label.center = [superview convertPoint:superview.center fromView:superview.superview]; =P

answered May 19 '13 at 21:32

fumoboy007

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score 0 · Answer 3 · answered May 19 '13 at 21:40

Set the label's center property to the center point of it's superview's bounds. Since the superview's center and frame properties are in coordinate space of their superview, those properties aren't helpful (unless you do the conversion like fumoboy does).

label.center = CGRectGetMidPoint(label.superview.bounds);

I made this function for convenience:

CGPoint CGRectGetMidPoint(CGRect rect)
{
    return CGPointMake(CGRectGetMidX(rect), CGRectGetMidY(rect));
}

When setting the frame of a UILabel, is it possible to set it to the vertical and horizontal center of the superview in code?

3 Answers3