Unity3d 打开本地摄像头扫描二维码

首先 下载ZXing.Net.0.12.0.0.zip,下载地址为http://zxingnet.codeplex.com/。

’解压找到unity文件夹，然后将其放到unity工程。

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

public class QRcode : MonoBehaviour
{
public Color32[] data;
private bool isScan;
public RawImage cameraTexture;
public Text txtQRcode;
private WebCamTexture webCameraTexture;
private BarcodeReader barcodeReader;
private float timer = 0;

IEnumerator Start()
{
barcodeReader = new BarcodeReader();
yield return Application.RequestUserAuthorization(UserAuthorization.WebCam);
if (Application.HasUserAuthorization(UserAuthorization.WebCam))
{
WebCamDevice[] devices = WebCamTexture.devices;
string devicename = devices[0].name;
webCameraTexture = new WebCamTexture(devicename, 400, 300);
cameraTexture.texture = webCameraTexture;
webCameraTexture.Play();
isScan = true;
}

}

void Update()
{
if (isScan)
{
timer += Time.deltaTime;

if (timer > 0.5f) //0.5秒扫描一次
{
StartCoroutine(ScanQRcode());
timer = 0;
}
}

}

IEnumerator ScanQRcode()
{
data = webCameraTexture.GetPixels32();
DecodeQR(webCameraTexture.width, webCameraTexture.height);
yield return new WaitForEndOfFrame();
}

private void DecodeQR(int width, int height)
{
var br = barcodeReader.Decode(data, width, height);
if (br != null)
{
txtQRcode.text = br.Text;
isScan = false;
webCameraTexture.Stop();
}

}

}