扫描二维码加载网页图片

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__________#_______####_______####______________
    身是菩提树，心如明镜台，时时勤拂拭，勿使惹尘埃。
                我们的未来没有BUG              
* ==============================================================================
* Filename: camRocode
* Created:  $time$
* Author:   WYC
* Purpose:  掃描二維碼加載圖片
* ==============================================================================
*/
using UnityEngine;
using System.Collections;
using UnityEngine.UI;
using ZXing;

public class camRocode : MonoBehaviour {
    [Header("UI")]
    public Image image;
    public RawImage cameraTexture;
    public Text txt;

    private Color32[] data;
    private bool IsScan;
    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;
        }

    }
    int width;
    void ScreenChange()//屏幕横竖屏切换
    {
        if (width == Screen.width)
            return;
        width = Screen.width;

        if (width > Screen.height)
        {
            cameraTexture.transform.localEulerAngles = Vector3.zero;
        }
        else
        {
            cameraTexture.transform.localEulerAngles = new Vector3(0, 0, -90);
        }
    }

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

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

    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)
        {
            //txt.text = br.Text;
            //IsScan = false;
            StartCoroutine(Load(br.Text));
        }

    }


    IEnumerator Load(string text)
    {
        txt.text = "正在加載";
        //请求WWW
        WWW www = new WWW(text);
        yield return www;
        if (www != null && string.IsNullOrEmpty(www.error))
        {
            //获取Texture
            Texture2D texture = www.texture;
            //创建Sprite
            Sprite sprite = Sprite.Create(texture, new Rect(0, 0, texture.width, texture.height), new Vector2(0.5f, 0.5f));
            image.sprite = sprite;
            txt.text = "加載成功";
        }
    }
}