利用ZXing.Net生成和识别二维码

ZXing.Net:ZXing是一个开放源码的，用Java实现的多种格式的1D/2D条码图像处理库。

github:https://github.com/micjahn/ZXing.Net

直接将字符串生成的二维码输出在Image上，要引用ZXing，ZXing.Common，ZXing.QrCode三个命名空间

 public void ShowQR(string str)
    {
        //设置二维码大小
        Texture2D encoded = new Texture2D(, );
        //二维码边框
        BitMatrix BIT;  

        Dictionary<EncodeHintType, object> hints = new Dictionary<EncodeHintType, object>();  

        //设置编码方式
        hints.Add(EncodeHintType.CHARACTER_SET, "UTF-8");
        BIT = new MultiFormatWriter().encode(str, BarcodeFormat.QR_CODE, , , hints);
        int width = BIT.Width;
        int height = BIT.Width;  

        for (int x = ; x < height; x++)
        {
            for (int y = ; y < width; y++)
            {
                if (BIT[x, y])
                {
                    encoded.SetPixel(y, x, Color.black);
                }
                else
                {
                    encoded.SetPixel(y, x, Color.white);
                }  

            }
        }
        encoded.Apply();
        qrImage.sprite = Sprite.Create(encoded,new Rect(,,encoded.width,encoded.height), Vector2.zero);
    }