What are the differences between Frame and Bounds properties in a graphical interface?

In iOS, UIView has two important properties for positioning and sizing: frame and bounds.

• frame is a rectangle that defines the position and size of the view in the coordinate system of its superview (parent view). That is, frame.origin is a point relative to the parent.

• bounds is a rectangle that defines the internal size and coordinate system of the view itself. Usually, bounds.origin is (0,0), and bounds.size is the size of the view.

Example: If a UIView has a frame with origin (50, 100) and size (200, 100), it is located 50 points along the X-axis and 100 points along the Y-axis relative to its parent. The bounds will most likely have an origin of (0,0) and a size of (200, 100), which describes the internal coordinate system of the view.

Thus, frame is responsible for position and size in the parent coordinate system, while bounds is responsible for the internal coordinate system and size of the view.