在画布上的Android绘图

protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);

    RectF oval = new RectF(90,100,200,300);
    Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);

    paint.setColor(Color.RED);
    paint.setstrokeWidth(5f);

    //  canvas.drawRect(oval,paint);

    //canvas.drawArc(oval,30f,100f,true,paint);

    float [] pts = {0,120,140,180,20,260,350,410,530,380,300,200
     };

    //canvas.drawPoints(pts,paint);
    canvas.drawLines(pts,paint);

    //RectF tail = new RectF(0f,50f,200f,100f);   
    //canvas.drawArc(tail,0f,paint);

    //canvas.drawRoundRect(oval,20f,paint);

    invalidate();

}

所以基本上我想要做的就是沿着数组中存在的这些点填充颜色.对此有何帮助??