Android项目中怎么添加分割线

public class ColourLineView extends View{   public ColourLineView(Context context) {  super(context, null);  }   public ColourLineView(Context context, AttributeSet attrs) {  super(context, attrs, 0);  }   public ColourLineView(Context context, AttributeSet attrs, int defStyleAttr) {  super(context, attrs, defStyleAttr);  }   @Override  protected void onDraw(Canvas canvas) {  super.onDraw(canvas);  int width = getWidth();  int height = getHeight();  Path path = new Path();  canvas.save();  path.reset();//重置路径  path.moveTo(width/2, 0);//左上点  path.lineTo(0, height);//左下点  path.lineTo(width-width/2, height);//右下点  path.lineTo(width, 0);//右上点  canvas.clipPath(path);//截取路径所绘制的图形  canvas.drawColor(Color.RED);  path.reset();//重置路径，准备绘制第三种颜色的平行四边形  canvas.restore();  } }