Unity实现多平台二维码扫描

using UnityEngine;using System.Collections;using ZXing;using ZXing.QrCode; public class QR {  /// <summary>  /// 解析二维码  /// </summary>  /// <param name="tex"></param>  /// <returns></returns>  public static string Decode(Texture2D tex) {    return DecodeColData(tex.GetPixels32(), tex.width, tex.height); //通过reader解码   }  public static string DecodeColData(Color32[] data, int w, int h) {    BarcodeReader reader = new BarcodeReader();    Result result = reader.Decode(data, w, h); //通过reader解码     //GC.Collect();    if (result == null)      return "";    else {      return result.Text;    }  }  /// <summary>  /// 生成二维码  /// </summary>  /// <param name="content"></param>  /// <param name="len"></param>  /// <returns></returns>  public static Texture2D GetQRTexture(string content, int len = 256) {    var bw = new BarcodeWriter();    bw.Format = BarcodeFormat.QR_CODE;    bw.Options = new ZXing.Common.EncodingOptions() {      Height = len,      Width = len    };    var cols = bw.Write(content);    Texture2D t = new Texture2D(len, len);    t.SetPixels32(cols);    t.Apply();    return t;  }}

using UnityEngine;using System.Collections;using System;using UnityEngine.UI;using System.Timers;/// <summary>/// 二维码解析工具/// 关键函数:///   public static QRHelper GetInst()                   --得到单例///   public event Action<string> OnQRScanned;               --扫描回调///   public void StartCamera(int index)                  --启动摄像头///   public void StopCamera()                       --停止摄像头///   public void SetToUI(RawImage raw,int UILayoutW,int UILayoutH)     --把摄像机画面设置到一个rawimage上并使它全屏显示/// </summary>public class QRHelper {   public event Action<string> OnQRScanned;   private static QRHelper _inst;  public static QRHelper GetInst() {    if (_inst == null) {      _inst = new QRHelper();    }    return _inst;  }  private int reqW = 640;  private int reqH = 480;  private WebCamTexture webcam;   Timer timer_in, timer_out;  /// <summary>  /// 启动摄像头  /// </summary>  /// <param name="index">手机后置为0，前置为1</param>  public void StartCamera(int index) {    StopCamera();    lock (mutex) {      buffer = null;      tbuffer = null;    }    var dev = WebCamTexture.devices;    webcam = new WebCamTexture(dev[index].name);    webcam.requestedWidth = reqW;    webcam.requestedHeight = reqH;    webcam.Play();    stopAnalysis = false;     InitTimer();    timer_in.Start();    timer_out.Start();  }  /// <summary>  /// 停止  /// </summary>  public void StopCamera() {    if (webcam!=null) {      webcam.Stop();      UnityEngine.Object.Destroy(webcam);      Resources.UnloadUnusedAssets();      webcam = null;      stopAnalysis = true;       timer_in.Stop();      timer_out.Start();      timer_in = null;      timer_out = null;    }  }  /// <summary>  /// 把摄像机画面设置到一个rawimage上并使它全屏显示  /// </summary>  /// <param name="raw">rawimage</param>  /// <param name="UILayoutW">UI布局时的宽度</param>  /// <param name="UILayoutH">UI布局时的高度</param>  public void SetToUI(RawImage raw,int UILayoutW,int UILayoutH){    raw.GetComponent<RectTransform>().sizeDelta = GetWH(UILayoutW,UILayoutH);    int d = -1;    if (webcam.videoVerticallyMirrored) {      d = 1;    }    raw.GetComponent<RectTransform>().localRotation *= Quaternion.AngleAxis(webcam.videoRotationAngle, Vector3.back);    float scaleY = webcam.videoVerticallyMirrored ? -1.0f : 1.0f;    raw.transform.localScale = new Vector3(1, scaleY * 1, 0.0f);    raw.texture = webcam;    raw.color = Color.white;  }  //在考虑可能旋转的情况下计算UI的宽高  private Vector2 GetWH(int UILayoutW, int UILayoutH) {    int Angle = webcam.videoRotationAngle;    Vector2 init = new Vector2(reqW, reqH);    if ( Angle == 90 || Angle == 270 ) {      var tar = init.ScaleToContain(new Vector2(UILayoutH,UILayoutW));      return tar;    }    else {      var tar = init.ScaleToContain(new Vector2(UILayoutW, UILayoutH));      return tar;    }  }  private void InitTimer() {    timer_in = new Timer(500);    timer_in.AutoReset = true;    timer_in.Elapsed += (a,b) => {      ThreadWrapper.Invoke(WriteDataBuffer);    };    timer_out = new Timer(900);    timer_out.AutoReset = true;    timer_out.Elapsed += (a,b)=>{      Analysis();    };  }  private Color32[] buffer = null;  private Color32[] tbuffer = null;  private object mutex = new object();  private bool stopAnalysis = false;   int dw, dh;  private void WriteDataBuffer() {    lock (mutex) {      if (buffer == null && webcam!=null) {        buffer = webcam.GetPixels32();        dw = webcam.width;        dh = webcam.height;      }    }  }  //解析二维码  private void Analysis() {    if (!stopAnalysis) {      lock (mutex) {        tbuffer = buffer;        buffer = null;      }      if (tbuffer == null) {        ;      }      else {        string str = QR.DecodeColData(tbuffer, dw, dh);        tbuffer = null;        if (!str.IsNullOrEmpty() && OnQRScanned != null) {          ThreadWrapper.Invoke(() => {            if (OnQRScanned!=null)              OnQRScanned(str);          });        }      }    }    tbuffer = null;  }}

using UnityEngine;using System.Collections;using System.Collections.Generic;using PureMVC.Patterns;using PureMVC.Interfaces;/// <summary>/// 扫描二维码界面逻辑/// </summary>public class ScanQRMediator : Mediator {   AudioProxy audio; public QRView TarView {    get {      return base.ViewComponent as QRView;    }  }  public ScanQRMediator()    : base("ScanQRMediator") {  }  string NextView = "";  bool isInitOver = false;  int cameraDelay = 1;  public override void OnRegister() {    base.OnRegister();     if (Application.platform == RuntimePlatform.IPhonePlayer) {      cameraDelay = 5;    }    else {      cameraDelay = 15;    }     audio = AppFacade.Inst.RetrieveProxy<AudioProxy>("AudioProxy");     TarView.BtnBack.onClick.AddListener(BtnEscClick);        QRHelper.GetInst().StartCamera(0);    TarView.WebcamContent.rectTransform.localEulerAngles = Vector3.zero;    CoroutineWrapper.EXEF(cameraDelay, () => {      RegQRCB();      QRHelper.GetInst().SetToUI(TarView.WebcamContent, 1536, 2048);      if (Application.platform == RuntimePlatform.IPhonePlayer) {        TarView.WebcamContent.rectTransform.localScale = new Vector3(1, -1, 0);      }      isInitOver = true;    });    UmengStatistics.PV(TarView);    //暂停背景音乐    audio.SetBGActive(false);  }   public override void OnRemove() {    base.OnRemove();    TarView.BtnBack.onClick.RemoveListener(BtnEscClick);    if (NextView != "UnlockView") {      audio.SetBGActive(true);    }    NextView = "";    isInitOver = false;  }  bool isEsc = false;  void BtnEscClick() {    if (isEsc || !isInitOver) {      return;    }    isEsc = true;     TarView.WebcamContent.texture = null;    TarView.WebcamContent.color = Color.black;    RemoveQRCB();    QRHelper.GetInst().StopCamera();     CoroutineWrapper.EXEF(cameraDelay, () => {      isEsc = false;      if (Application.platform == RuntimePlatform.IPhonePlayer) {        ToUserInfoView();      }      else {        string origin = TarView.LastArg.SGet<string>("origin");        if (origin == "ARView") {          ToARView();        }        else if (origin == "UserInfoView") {          ToUserInfoView();        }        else {          ToARView();        }      }    });  }  void ToARView() {    AppFacade.Inst.RemoveMediator(this.MediatorName);    ViewMgr.GetInst().ShowView(TarView, "ARView", null);  }  void ToUserInfoView() {    AppFacade.Inst.RemoveMediator(this.MediatorName);    ViewMgr.GetInst().ShowView(TarView, "UserInfoView", null);    var v = ViewMgr.GetInst().PeekTop();    var vc = new UserInfoMediator();    vc.ViewComponent = v;    AppFacade.Inst.RegisterMediator(vc);  }  int reg = 0;  void RegQRCB() {    if (reg == 0) {      QRHelper.GetInst().OnQRScanned += OnQRScanned;      reg = 1;    }  }  void RemoveQRCB() {    if (reg == 1) {      QRHelper.GetInst().OnQRScanned -= OnQRScanned;      reg = 0;    }  }  bool isQRJump = false;  void OnQRScanned(string qrStr) {    if (isQRJump) {      return;    }    isQRJump = true;     TarView.WebcamContent.texture = null;    TarView.WebcamContent.color = Color.black;    RemoveQRCB();    QRHelper.GetInst().StopCamera();    NextView = "UnlockView";    CoroutineWrapper.EXEF(cameraDelay, () => {      isQRJump = false;      AppFacade.Inst.RemoveMediator(this.MediatorName);      audio.PlayScanedEffect();#if YX_DEBUG      Debug.Log("qr is :"+qrStr);      Toast.ShowText(qrStr,1.5f);#endif      ViewMgr.GetInst().ShowView(TarView, "UnlockView", HashtableEX.Construct("QRCode", qrStr, "origin", TarView.LastArg.SGet<string>("origin")));      var v = ViewMgr.GetInst().PeekTop();      var vc = new UnlockMediator();      vc.ViewComponent = v;      AppFacade.Inst.RegisterMediator(vc);    });  }}