private void drawText(Canvas c){
  c.drawText(mFormatValue.format(mValue * mPhase) + " " + mUnit,getWidth() / 2,getHeight() / 2 + mTextPaint.descent(),mTextPaint);
}

private void drawText ( Canvas c ) { c . drawText ( mFormatValue . format ( mValue * mPhase ) + " " + mUnit , getWidth ( ) / 2 , getHeight ( ) / 2 + mTextPaint . descent ( ) , mTextPaint ) ; }
draws the text in the center of the view
