WHATS THE DIFFERENCE BETWEEN BOUNDS AND FRAME?

Nigel Bunyan

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  1. Nigel Bunyan

    Post:4

    Points:20
    Whats the difference between bounds and frame?

    The bounds of an UIView is the rectangle, expressed as a location (x,y) and size (width,height) relative to its own coordinate system (0,0).

    The frame of an UIView is the rectangle, expressed as a location (x,y) and size (width,height) relative to the superview it is contained within.

     

    So, imagine a view that has a size of 100x100 (width x height) positioned at 25,25 (x,y) of its superview. The following code prints out this view's bounds and frame:

    // This method is in the view controller of the superview

    - (void)viewDidLoad {

        [super viewDidLoad];

        NSLog(@"bounds.origin.x: %f", label.bounds.origin.x);

        NSLog(@"bounds.origin.y: %f", label.bounds.origin.y);

        NSLog(@"bounds.size.width: %f", label.bounds.size.width);

        NSLog(@"bounds.size.height: %f", label.bounds.size.height);

        NSLog(@"frame.origin.x: %f", label.frame.origin.x);

        NSLog(@"frame.origin.y: %f", label.frame.origin.y);

        NSLog(@"frame.size.width: %f", label.frame.size.width);

        NSLog(@"frame.size.height: %f", label.frame.size.height);

    }

    And the output of this code is:

    bounds.origin.x: 0
    

    bounds.origin.y: 0

    bounds.size.width: 100

    bounds.size.height: 100

     

    frame.origin.x: 25

    frame.origin.y: 25

    frame.size.width: 100

    frame.size.height: 100

     

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