Unity调用手机摄像机识别二维码

using System.Threading;
using UnityEngine;
using ZXing;
 
public class WebCameraScript : MonoBehaviour
{
  public string LastResult;
  public string Lastresult;
  public Color32[] data;
  private bool isQuit;
 
  public GUITexture myCameraTexture;
  private WebCamTexture webCameraTexture;
 
  private void Start()
  {
    // bool success = Came<b>本文来源gao@dai!ma.com搞$代^码!网7</b>raDevice.Instance.SetFocusMode(CameraDevice.FocusMode.FOCUS_MODE_CONTINUOUSAUTO);
    // Checks how many and which cameras are available on the device
    for (int cameraIndex = 0; cameraIndex < WebCamTexture.devices.Length; cameraIndex++)
    {
      // We want the back camera
      if (!WebCamTexture.devices[cameraIndex].isFrontFacing)
      {
        //webCameraTexture = new WebCamTexture(cameraIndex, Screen.width, Screen.height);
        webCameraTexture = new WebCamTexture(cameraIndex, 200, 200);
 
        // Here we flip the GuiTexture by applying a localScale transformation
        // works only in Landscape mode
        myCameraTexture.transform.localScale = new Vector3(1, 1, 1);
      }
    }
 
    // Here we tell that the texture of coming from the camera should be applied 
    // to our GUITexture. As we have flipped it before the camera preview will have the 
    // correct orientation
    myCameraTexture.texture = webCameraTexture;
    // Starts the camera
    webCameraTexture.Play();
    //enabled=WebCamTexture.s
  }
 
  public void ShowCamera()
  {
    myCameraTexture.guiTexture.enabled = true;
    webCameraTexture.Play();
  }
 
  public void HideCamera()
  {
    myCameraTexture.guiTexture.enabled = false;
    webCameraTexture.Stop();
  }
 
  private void OnGUI()
  {
    GUI.Label(new Rect(60, 30*1, Screen.width, 20), "LastResult:" + LastResult);
    if (GUI.Button(new Rect(0, 0, 100, 100), "ON/OFF"))
    {
      if (webCameraTexture.isPlaying)
        HideCamera();
      else
        ShowCamera();
    }
  }
 
  private void Update()
  {
    //data = new Color32[webCameraTexture.width * webCameraTexture.height];
    data = webCameraTexture.GetPixels32();
 
    DecodeQR(webCameraTexture.width, webCameraTexture.height);
  }
 
 
  private void DecodeQR(int W, int H)
  {
    if (isQuit)
      return;
    // create a reader with a custom luminance source
    var barcodeReader = new BarcodeReader {AutoRotate = true, TryHarder = true};
 
    //    while (true)
    {
      try
      {
        // decode the current frame
        Result result = barcodeReader.Decode(data, W, H);
        if (result != null)
        {
          LastResult = result.Text;
          // shouldEncodeNow = true;
          print("i read out::" + result.Text);
        }
 
        // Sleep a little bit and set the signal to get the next frame
        Thread.Sleep(200);
        data = null;
      }
      catch
      {
      }
    }
  }
}