Unity实现多平台二维码扫描

2023-08-18 17:03:04 80

在unity里做扫二维码的功能，虽然有插件，但是移动端UI一般不能自定义，所以后来自已做了一个，直接在c#层扫描解析，UI上就可以自己发挥了。

上代码：

这个是调用zxing的脚本。

usingUnityEngine;
usingSystem.Collections;
usingZXing;
usingZXing.QrCode;

publicclassQR{
///
///解析二维码
///
///
///
publicstaticstringDecode(Texture2Dtex){
returnDecodeColData(tex.GetPixels32(),tex.width,tex.height);//通过reader解码
}
publicstaticstringDecodeColData(Color32[]data,intw,inth){
BarcodeReaderreader=newBarcodeReader();
Resultresult=reader.Decode(data,w,h);//通过reader解码
//GC.Collect();
if(result==null)
return"";
else{
returnresult.Text;
}
}
///
///生成二维码
///
///
///
///
publicstaticTexture2DGetQRTexture(stringcontent,intlen=256){
varbw=newBarcodeWriter();
bw.Format=BarcodeFormat.QR_CODE;
bw.Options=newZXing.Common.EncodingOptions(){
Height=len,
Width=len
};
varcols=bw.Write(content);
Texture2Dt=newTexture2D(len,len);
t.SetPixels32(cols);
t.Apply();
returnt;
}
}

然后是封装：

usingUnityEngine;
usingSystem.Collections;
usingSystem;
usingUnityEngine.UI;
usingSystem.Timers;
///
///二维码解析工具
///关键函数:
///publicstaticQRHelperGetInst()--得到单例
///publiceventActionOnQRScanned;--扫描回调
///publicvoidStartCamera(intindex)--启动摄像头
///publicvoidStopCamera()--停止摄像头
///publicvoidSetToUI(RawImageraw,intUILayoutW,intUILayoutH)--把摄像机画面设置到一个rawimage上并使它全屏显示
///
publicclassQRHelper{

publiceventActionOnQRScanned;

privatestaticQRHelper_inst;
publicstaticQRHelperGetInst(){
if(_inst==null){
_inst=newQRHelper();
}
return_inst;
}
privateintreqW=640;
privateintreqH=480;
privateWebCamTexturewebcam;

Timertimer_in,timer_out;
///
///启动摄像头
///
///手机后置为0，前置为1
publicvoidStartCamera(intindex){
StopCamera();
lock(mutex){
buffer=null;
tbuffer=null;
}
vardev=WebCamTexture.devices;
webcam=newWebCamTexture(dev[index].name);
webcam.requestedWidth=reqW;
webcam.requestedHeight=reqH;
webcam.Play();
stopAnalysis=false;

InitTimer();
timer_in.Start();
timer_out.Start();
}
///
///停止
///
publicvoidStopCamera(){
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;
}
}
///
///把摄像机画面设置到一个rawimage上并使它全屏显示
///
///rawimage
///UI布局时的宽度
///UI布局时的高度
publicvoidSetToUI(RawImageraw,intUILayoutW,intUILayoutH){
raw.GetComponent().sizeDelta=GetWH(UILayoutW,UILayoutH);
intd=-1;
if(webcam.videoVerticallyMirrored){
d=1;
}
raw.GetComponent().localRotation*=Quaternion.AngleAxis(webcam.videoRotationAngle,Vector3.back);
floatscaleY=webcam.videoVerticallyMirrored?-1.0f:1.0f;
raw.transform.localScale=newVector3(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
privateVector2GetWH(intUILayoutW,intUILayoutH){
intAngle=webcam.videoRotationAngle;
Vector2init=newVector2(reqW,reqH);
if(Angle==90||Angle==270){
vartar=init.ScaleToContain(newVector2(UILayoutH,UILayoutW));
returntar;
}
else{
vartar=init.ScaleToContain(newVector2(UILayoutW,UILayoutH));
returntar;
}
}
privatevoidInitTimer(){
timer_in=newTimer(500);
timer_in.AutoReset=true;
timer_in.Elapsed+=(a,b)=>{
ThreadWrapper.Invoke(WriteDataBuffer);
};
timer_out=newTimer(900);
timer_out.AutoReset=true;
timer_out.Elapsed+=(a,b)=>{
Analysis();
};
}
privateColor32[]buffer=null;
privateColor32[]tbuffer=null;
privateobjectmutex=newobject();
privateboolstopAnalysis=false;

intdw,dh;
privatevoidWriteDataBuffer(){
lock(mutex){
if(buffer==null&&webcam!=null){
buffer=webcam.GetPixels32();
dw=webcam.width;
dh=webcam.height;
}
}
}
//解析二维码
privatevoidAnalysis(){
if(!stopAnalysis){
lock(mutex){
tbuffer=buffer;
buffer=null;
}
if(tbuffer==null){
;
}
else{
stringstr=QR.DecodeColData(tbuffer,dw,dh);
tbuffer=null;
if(!str.IsNullOrEmpty()&&OnQRScanned!=null){
ThreadWrapper.Invoke(()=>{
if(OnQRScanned!=null)
OnQRScanned(str);
});
}
}
}
tbuffer=null;
}
}

调用方式如下，用了pureMVC，可能理解起来有点乱，也不能直接用于你的工程，主要看OnRegister和OnRemove里是怎么启动和停止的，以及RegQRCB、RemoveQRCB、OnQRSCcanned如何注册、移除以及响应扫描到二维码的事件的。在onregister中，由于ios上画面有镜象，所以把rawimage的scale的y置为了-1以消除镜像：

usingUnityEngine;
usingSystem.Collections;
usingSystem.Collections.Generic;
usingPureMVC.Patterns;
usingPureMVC.Interfaces;
///
///扫描二维码界面逻辑
///
publicclassScanQRMediator:Mediator{

AudioProxyaudio;
publicQRViewTarView{
get{
returnbase.ViewComponentasQRView;
}
}
publicScanQRMediator()
:base("ScanQRMediator"){
}
stringNextView="";
boolisInitOver=false;
intcameraDelay=1;
publicoverridevoidOnRegister(){
base.OnRegister();

if(Application.platform==RuntimePlatform.IPhonePlayer){
cameraDelay=5;
}
else{
cameraDelay=15;
}

audio=AppFacade.Inst.RetrieveProxy("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=newVector3(1,-1,0);
}
isInitOver=true;
});
UmengStatistics.PV(TarView);
//暂停背景音乐
audio.SetBGActive(false);
}

publicoverridevoidOnRemove(){
base.OnRemove();
TarView.BtnBack.onClick.RemoveListener(BtnEscClick);
if(NextView!="UnlockView"){
audio.SetBGActive(true);
}
NextView="";
isInitOver=false;
}
boolisEsc=false;
voidBtnEscClick(){
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{
stringorigin=TarView.LastArg.SGet("origin");
if(origin=="ARView"){
ToARView();
}
elseif(origin=="UserInfoView"){
ToUserInfoView();
}
else{
ToARView();
}
}
});
}
voidToARView(){
AppFacade.Inst.RemoveMediator(this.MediatorName);
ViewMgr.GetInst().ShowView(TarView,"ARView",null);
}
voidToUserInfoView(){
AppFacade.Inst.RemoveMediator(this.MediatorName);
ViewMgr.GetInst().ShowView(TarView,"UserInfoView",null);
varv=ViewMgr.GetInst().PeekTop();
varvc=newUserInfoMediator();
vc.ViewComponent=v;
AppFacade.Inst.RegisterMediator(vc);
}
intreg=0;
voidRegQRCB(){
if(reg==0){
QRHelper.GetInst().OnQRScanned+=OnQRScanned;
reg=1;
}
}
voidRemoveQRCB(){
if(reg==1){
QRHelper.GetInst().OnQRScanned-=OnQRScanned;
reg=0;
}
}
boolisQRJump=false;
voidOnQRScanned(stringqrStr){
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();
#ifYX_DEBUG
Debug.Log("qris:"+qrStr);
Toast.ShowText(qrStr,1.5f);
#endif
ViewMgr.GetInst().ShowView(TarView,"UnlockView",HashtableEX.Construct("QRCode",qrStr,"origin",TarView.LastArg.SGet("origin")));
varv=ViewMgr.GetInst().PeekTop();
varvc=newUnlockMediator();
vc.ViewComponent=v;
AppFacade.Inst.RegisterMediator(vc);
});
}
}

最后，放上zxing.unity.dll,放在plugins里就可以了。

以上代码5.1.2测试可用。

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持毛票票。

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Unity实现多平台二维码扫描

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