@Override
protected?void?onDraw(Canvas?canvas)?{
????super.onDraw(canvas);

????drawBoard(canvas);

????drawPieces(canvas);

????checkGameOver();
}

private?void?drawPieces(Canvas?canvas)?{

????for?(int?i=0,n=mWhiteArray.size();i<n;i++){
????????Point?whitePoint=mWhiteArray.get(i);
????????canvas.drawBitmap(mWhitePiece,
????????????????(whitePoint.x+(1-radtioPieceOfLineHeight)/2)*mLineHeight,
????????????????(whitePoint.y+(1-radtioPieceOfLineHeight)/2)*mLineHeight,null);
????}
????for?(int?i=0,n=mBlackArray.size();i<n;i++){
????????Point?blackPoint=mBlackArray.get(i);
????????canvas.drawBitmap(mBlackPiece,
????????????????(blackPoint.x+(1-radtioPieceOfLineHeight)/2)*mLineHeight,
????????????????(blackPoint.y+(1-radtioPieceOfLineHeight)/2)*mLineHeight,null);
????}
}

private?void?drawBoard(Canvas?canvas){
????int?w=mPanelWidth;
????float?lineHeight=mLineHeight;

????for?(int?i=0;i<MAX_LINE;i++){
????????int?startX=?(int)?(lineHeight/2);
????????int?endX=?(int)?(w-lineHeight/2);
????????int?y=?(int)?((0.5+i)*lineHeight);
????????canvas.drawLine(startX,y,endX,y,mPaint);

????????canvas.drawLine(y,startX,y,endX,mPaint);
????}
}