- widthMeasureSpec
- Horizontal space requirements as imposed by the parent
- heightMeasureSpec
- Vertical space requirements as imposed by the parent
This is called to find out how big a view should be. The parent supplies constraint information in the width and height parameters.
The actual measurement work of a view is performed in View.OnMeasure(int, System.Int32), called by this method. Therefore, only View.OnMeasure(int, System.Int32) can and must be overridden by subclasses.