question: private void drawCenterText ( ) { if ( mDrawCenterText ) { PointF c = getCenter ( ) ; String [ ] lines = mCenterText . split ( "\n" ) ; float lineHeight = ( mValuePaint . ascent ( ) + mValuePaint . descent ( ) ) * 1.6f ; float textheight = lines . length * lineHeight ; for ( int i = 0 ; i < lines . length ; i ++ ) { mDrawCanvas . drawText ( lines [ lines . length - i - 1 ] , c . x , c . y - textheight / 2 + lineHeight * i , mCenterTextPaint ) ; } } }
target:  draws the description text in the center of the pie chart makes most sense when center-hole is enabled