When exactly is the size of a View element calculated during its lifecycle?

The size of a View element is calculated during the measurement phase (measure) in the View's lifecycle. This occurs in the onMeasure(int widthMeasureSpec, int heightMeasureSpec) method, which is called by the system after the parent ViewGroup decides how much space is available for the child elements. At this point, the View must determine its dimensions, considering the constraints passed in widthMeasureSpec and heightMeasureSpec. After calculating the dimensions, setMeasuredDimension(width, height) is called to save the measurement result. This process happens before the layout stage, where the View is positioned.