Android ShapeDrawable

今天做项目碰到一个这样的情况，就是颜色指示框，用的是正方形边框是黑色的，里面填充颜色，颜色值是动态的，为了解决这个问题，查了好多资料，终于找到解决的方法，利用ShapeDrawable，我们自定义一个CustomShapeDrawable类继承ShapeDrawable，代码：

 public class CustomShapeDrawable extends ShapeDrawable {
     private final Paint fillpaint, strokepaint;

     public CustomShapeDrawable(Shape s, int fill, int stroke, int strokeWidth) {
         super(s);
         fillpaint = new Paint(this.getPaint());
         fillpaint.setColor(fill);
         strokepaint = new Paint(fillpaint);
         strokepaint.setStyle(Paint.Style.STROKE);
         strokepaint.setStrokeWidth(strokeWidth);
         strokepaint.setColor(stroke);
     }

     @Override
     protected void onDraw(Shape shape, Canvas canvas, Paint paint) {
         shape.draw(canvas, fillpaint);
         shape.draw(canvas, strokepaint);
     }
 }

效果图如下：