@ Override protected void onMeasure ( int widthMeasureSpec , int heightMeasureSpec ) { final int height = getDefaultSize ( getSuggestedMinimumHeight ( ) , heightMeasureSpec ) ; final int width = getDefaultSize ( getSuggestedMinimumWidth ( ) , widthMeasureSpec ) ; final int min = Math . min ( width , height ) ; setMeasuredDimension ( min , min ) ; float highStroke = strokeWidth > backgroundStrokeWidth ? strokeWidth : backgroundStrokeWidth ; rectF . set ( 0 + highStroke / 2 , 0 + highStroke / 2 , min - highStroke / 2 , min - highStroke / 2 ) ; }
region Mesure Method