unity生成二维码并保存_zxing unity下周

参考来源
参考来源

ZXing下载地址：https://archive.codeplex.com/?p=zxingnet
下载之后把unity目录下三个文件放到unity工程Plugins下，然后创建脚本：
over

using UnityEngine;
using System.Collections;
using ZXing;
using ZXing.QrCode;
using UnityEngine.UI;
using System.IO;

public class QRcodeDraw : MonoBehaviour
{
    public Texture2D encoded;
    //指定字符串
    //private string datapath = "C:/Users/ASUS/Desktop/";
    public string QRCodes = "www.baidu.com";
    public RawImage QRImage;
    private string filespath = "C:/Users/ASUS/Desktop/222.png";
    private string folderpath = "C:/Users/ASUS/Desktop/";

    void Start()
    {
        ShowCode();        
    }


    //定义方法生成二维码
    private static Color32[] Encode(string textForEncoding, int width, int height)
    {
        var writer = new BarcodeWriter
        {
            Format = BarcodeFormat.QR_CODE,
            Options = new QrCodeEncodingOptions
            {
                Height = height,
                Width = width
            }
        };
        return writer.Write(textForEncoding);
    }



    public void ShowCode()
    {
        encoded = new Texture2D(256, 256);
        var textForEncoding = QRCodes;
        if (textForEncoding != null)
        {
            //二维码写入图片
            var color32 = Encode(textForEncoding, encoded.width, encoded.height);
            encoded.SetPixels32(color32);
            encoded.Apply();
            //重新赋值一张图，计算大小,避免白色边框过大
            Texture2D encoded1;
            encoded1 = new Texture2D(190, 190);//创建目标图片大小
            encoded1.SetPixels(encoded.GetPixels(32, 32, 190, 190));
            encoded1.Apply();
            QRImage.texture = encoded1;
            DoPicture();
        }
    }
    void DoPicture()//存储为png
    {

        if (!File.Exists(filespath))//首先判断一下该图片文件是否存在
        {
            if (!Directory.Exists(folderpath))//再判断一下该文件夹是否存在，若不存在先创建
            {
                Directory.CreateDirectory(folderpath);//创建目录
            }
            var bys = encoded.EncodeToPNG();//转换图片资源
            File.WriteAllBytes(filespath, bys);//保存图片到写好的目录下
        }


    }


    //    void OnGUI()
    //    {
    //        GUI.DrawTexture(new Rect(100, 100, 256, 256), encoded1);
    //    }

}

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