How will the UIView frame change after rotating it by 90 degrees?

When rotating a UIView by 90 degrees, the frame will change because the frame is a rectangle describing the position and size in the superview's coordinate system. Rotation changes the orientation and coordinates but does not modify the bounds property.

For example, if a UIView has a width of 100 and a height of 50, after a 90-degree rotation, the frame will have a width of 50 and a height of 100, as the X and Y axes are swapped.

It is important to note that the frame is calculated relative to the superview and depends on the transform. Therefore, after rotation, the frame may appear as if the sizes have swapped, and the position has shifted to maintain the visual layout.

If you need to get the unchanged size, you should use the bounds property, which does not change with transformations.