Article directory
ZXing.dll download address
ZXing.net URL
ZXing.net github
ZXing.net Release URL
step
- create project
- Create a Plugins folder and put it in zxing.unity.dll
- write script
- Create Proposal Demo Test
write script
Generate QR code
using UnityEngine;
using UnityEngine.UI;
using ZXing;
/// <summary>
/// 二维码的生成类
/// </summary>
public class QRCodeDraw : MonoBehaviour
{
public static QRCodeDraw _Instance;
private void Awake() => _Instance = this;
/// <summary> 绘制好的二维码 </summary>
public Image image_QRCode;
//二维码绘制类
BarcodeWriter barcodeWriter;
/// <summary>
/// 将制定字符串信息转换成二维码图片信息
/// </summary>
/// <param name="formatStr">要生产二维码的字符串信息</param>
/// <param name="width">二维码的宽度</param>
/// <param name="height">二维码的高度</param>
/// <returns>返回二维码图片的颜色数组信息</returns>
Color32[] GeneQRCode(string formatStr, int width, int height)
{
//绘制二维码前进行一些设置
ZXing.QrCode.QrCodeEncodingOptions options = new ZXing.QrCode.QrCodeEncodingOptions();
//设置字符串转换格式，确保字符串信息保持正确
options.CharacterSet = "UTF-8";
//设置绘制区域的宽度和高度的像素值
options.Width = width;
options.Height = height;
//设置二维码边缘留白宽度（值越大留白宽度大，二维码就减小）
options.Margin = 1;
//实例化字符串绘制二维码工具
barcodeWriter = new BarcodeWriter {
Format = BarcodeFormat.QR_CODE, Options = options };
//进行二维码绘制并进行返回图片的颜色数组信息
return barcodeWriter.Write(formatStr);
}
/// <summary>
/// 根据二维码图片信息绘制指定字符串信息的二维码到指定区域
/// </summary>
/// <param name="str">要生产二维码的字符串信息</param>
/// <param name="width">二维码的宽度</param>
/// <param name="height">二维码的高度</param>
/// <returns>返回绘制好的图片</returns>
Texture2D ShowQRCode(string str, int width, int height)
{
//实例化一个图片类
Texture2D t = new Texture2D(width, height);
//获取二维码图片颜色数组信息
Color32[] col32 = GeneQRCode(str, width, height);
//为图片设置绘制像素颜色信息
t.SetPixels32(col32);
//设置信息更新应用下
t.Apply();
//将整理好的图片信息显示到指定区域中
return t;
}
/// <summary>
/// 开始绘制指定信息的二维码
/// </summary>
/// <param name="formatStr">要被绘制的信息</param>
public void DrawQRCode(string formatStr)
{
//Debug.Log(formatStr);
//注意：这个宽高度大小256不要变。不然生成的信息不正确
//256有可能是这个ZXingNet插件指定大小的绘制像素点数值
Texture2D t = ShowQRCode(formatStr, 256, 256);
//转为image
Sprite image = Sprite.Create(t, new Rect(00, 0, t.width, t.height),new Vector2(0.5f,0.5f));
//显示到UI界面的图片上
///texture_QRCode = t;
image_QRCode.sprite = image;
UnityTools.Debuger.Log("想要生成二维码的内容为：" + formatStr);
}
}
Scan QR code
using UnityEngine;
using UnityEngine.UI;
using ZXing;
/// <summary>
/// 二维码扫描识别类
/// </summary>
public class QRCodeScanning : MonoBehaviour
{
public static QRCodeScanning _Instance;
private void Awake() => _Instance = this;
[System.NonSerialized]
public bool bool_Result;
[System.NonSerialized]
/// <summary> 扫描信息 </summary>
public string str_ScanInfo;
/// <summary> 摄像机映射显示区域 </summary>
///public Texture cameraTexture;
public Image cameraTexture;
private WebCamTexture webCamTexture;//摄像机映射纹理
//二维码识别类
BarcodeReader barcodeReader;//库文件的对象（二维码信息保存的地方）
/// <summary>
/// 开启摄像机和准备工作
/// </summary>
void DeviceInit()
{
//1、获取所有摄像机硬件
WebCamDevice[] devices = WebCamTexture.devices;
//2、获取第一个摄像机硬件的名称
string deviceName = devices[0].name;//手机后置摄像机
//3、创建实例化一个摄像机显示区域
webCamTexture = new WebCamTexture(deviceName: deviceName);
//4、显示的图片信息
//cameraTexture = webCamTexture;
//Debuger.Log(webCamTexture.width + "_____"+ webCamTexture.height);
//Texture2D texture2D = Texture2Texture2D(webCamTexture);
//Sprite sprite = Sprite.Create(texture2D, new Rect(0, 0, texture2D.width, texture2D.height), new Vector2(0.5f, 0.5f));
//cameraTexture.sprite = sprite;
//5、打开摄像机运行识别
if (webCamTexture.isPlaying) return;
webCamTexture.Play();
//6、实例化识别二维码信息存储对象
barcodeReader = new BarcodeReader();
}
Color32[] data;//二维码图片信息以像素点颜色信息数组存放
/// <summary>
/// 识别摄像机图片中的二维码信息
/// 打印二维码识别到的信息
/// </summary>
void ScanQRCode()
{
if (!webCamTexture.isPlaying) return;
//7、获取摄像机画面的像素颜色数组信息
data = webCamTexture.GetPixels32();
//8、获取图片中的二维码信息
Result result = barcodeReader.Decode(data, webCamTexture.width, webCamTexture.height);
//如果获取到二维码信息了，打印出来
if (result != null)
{
//Debuger.Log(result.Text);//===》==》===》 这是从二维码识别出来的信息
str_ScanInfo = result.Text;//显示扫描信息
UnityTools.Debuger.Log("扫描结果为：" + str_ScanInfo);
_Instance.bool_Result = true;
//扫描成功之后的处理
IsScanning = false;
webCamTexture.Stop();
cameraTexture.sprite = null;
}
}
bool IsScanning = false;
float interval = 3;//扫描识别时间间隔
/// <summary>
/// 扫描
/// </summary>
public void Scanning()
{
if (webCamTexture != null && webCamTexture.isPlaying) return;
//Debuger.Log("开始扫描");
DeviceInit();
IsScanning = true;
}
public void Stop()
{
if (!webCamTexture.isPlaying) return;
//Debuger.Log("停止扫描");
webCamTexture.Stop();
IsScanning = false;
}
Texture2D texture2D;
private void Update()
{
if (IsScann/ing)
{
texture2D = Texture2Texture2D(webCamTexture);
Sprite sprite = Sprite.Create(texture2D, new Rect(0, 0, texture2D.width, texture2D.height), new Vector2(0.5f, 0.5f));
cameraTexture.sprite = sprite;
//每隔一段时间进行一次识别二维码信息
interval += Time.deltaTime;
if (interval >= 3)
{
interval = 0;
ScanQRCode();//开始扫描
}
}
}
//以下参考博客https://blog.csdn.net/a673544319/article/details/82751883
Texture2D Texture2Texture2D(Texture texture)
{
Texture2D texture2D = new Texture2D(texture.width, texture.height, TextureFormat.RGBA32, false);
RenderTexture currentRT = RenderTexture.active;
RenderTexture renderTexture = RenderTexture.GetTemporary(texture.width, texture.height, 32);
Graphics.Blit(texture, renderTexture);
RenderTexture.active = renderTexture;
texture2D.ReadPixels(new Rect(0, 0, renderTexture.width, renderTexture.height), 0, 0);
texture2D.Apply();
RenderTexture.active = currentRT;
RenderTexture.ReleaseTemporary(renderTexture);
return texture2D;
}
}
use
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class QRCodeController : MonoBehaviour
{
public InputField inputField;
public void InstanceQRCode()
{
QRCodeDraw._Instance.DrawQRCode(inputField.text);
}
public void ScaningQRCode()
{
QRCodeScanning._Instance.Scanning();
}
}
build a demo
