android 画一对漂亮的括号

Question

android 画一对漂亮的括号。是（）() 这种括号。注意是在canvas上画出来的 ，不是用字符代替的。
这是因为我需要根据需要不同尺寸的括号。但是用drawArc画出的括号很丑。以下是主要代码。如何才能画一个比较漂亮的括号呢。

  public static final int bracketWidth = ViewTools.dip2px(7);
    private static Paint bracketPaint = new Paint();
    static {
        bracketPaint.setStrokeWidth(ViewTools.dip2px(1.5f));
        bracketPaint.setStyle(Paint.Style.STROKE );
    }
    public static void drawLeftBracket(Canvas canvas, int x, int y, int height) {
        x += bracketWidth / 2;
        RectF rect = new RectF(x, y, x + bracketWidth, y + height);
        canvas.drawArc(rect, 90, 180, false, bracketPaint);
    }

Answer 1

问题解决了。采用一张比较大的PNG括号图片，根据需要进行放缩节OK。

private static final int textBracketMaxHeight = ViewTools.dip2px(20);
    private static final int textBracketMaxWidth = ViewTools.dip2px(10);

 public static void drawLeftBracketPng(Canvas canvas, int x, int y,
            int height){
        Bitmap btp;
        if (height > textBracketMaxHeight) {
            btp = ViewTools.zoom(leftBracketPng, textBracketMaxWidth, height);
        }else{
            float scale = (float)height/leftBracketPng.getHeight();
            btp = ViewTools.zoom(leftBracketPng, scale, scale);
        }
        canvas.drawBitmap(btp, x, y, new Paint());
    }
    public static void drawRightBracketPng(Canvas canvas, int x, int y,
            int height){
        Bitmap btp;
        if (height > textBracketMaxHeight) {
            btp = ViewTools.zoom(rightBracketPng, textBracketMaxWidth, height);
        }else{
            float scale = (float)height/rightBracketPng.getHeight();
            btp = ViewTools.zoom(rightBracketPng, scale, scale);
        }
        canvas.drawBitmap(btp, x, y, new Paint());
    }