cocos2dx-lua在ios上实现生成及扫描二维码
2017-02-17 14:05
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首先说明下,我是支持用ios原生方法实现的。不过扫描二维码原生方法不支持ios7.0之前的设备,所以生成二维码用的原生方法实现,而扫描二维码用zBar sdk实现的(当然也可以用google官方的zXing sdk)。其中zBar中包含生成二维码的方法,而且更多样,我只是喜欢尽量用原生方法来实现。
这里我把所有生成二维码的代码和lua调用的扫描二维码方法都放在了项目->frameworks->runtime-src->proj.ios_mac->ios->AppController.h和AppController.mm中
而zBar sdk及相关类放到了 项目->frameworks->runtime-src->proj.ios_mac->ios下。
-----1.原生生成二维码
------------1.1AppController.h中添加代码:
其中createQRcode方法为最终lua掉用oc的方法,将生成的图片存到cocos2dx的writablePath下,并保存为"qrCode.png"。最后在lua端取出用sprite显示。
------------1.3lua调用createQRcode方法,并显示
项目->TARGETS->Build Phases->Link Binary With Libraries->左下角“+”号,search框中输入CoreImage.framework,选择匹配的选项即可。
-----2.zBar sdk实现二维码扫描
------------2.1下载zBar sdk
地址在后面给出。
------------2.2将zBarSDK解压并将解压后的zBarSDK导入到工程项目->frameworks->runtime-src->proj.ios_mac->ios下。
解压后的zBarSDK目录包含:Headers,libzbar.a,Resources。
如果导入工程后没有自动添加libzbar.a依赖框架,则需要手动添加该依赖框架(如1.4)。
------------2.3项目->frameworks->runtime-src->proj.ios_mac->ios->zBarSDK下新建ZCZBarViewController.h和ZCZBarViewController.mm两个文件,并导入工程,代码如下。
------------2.4ZCZBarViewController.h代码:
------------2.5AppController.h中添加代码:
------------2.6lua掉用oc扫描二维码代码:
如上1.4,扫描二维码需要添加框架AVFoundation, CoreMedie, CoreVideo, QuartzCore, libiconv
-----3.扫描界面横竖屏说明
如果游戏界面是横屏的,而二维码扫描界面要求是竖屏的,则需要做些操作。
------------3.1增加竖屏支持
项目->TARGETS->General->Deployment Info->Device Orientation->勾选Portrait,Landscape Left, Landscape Right。
------------3.2让游戏界面只支持横屏
项目->frameworks->runtime-src->proj.ios_mac->ios->RootViewController.mm中supportedInterfaceOrientations方法修改为:
项目->frameworks->runtime-src->proj.ios_mac->ios->ZCZBarViewController.mm中增加代码:
项目->frameworks->runtime-src->proj.ios_mac->ios->ZCZBarViewController.mm中将
#define WIDTH和#define HEIGHT两个宏的值颠倒下。
-----4.关于项目->frameworks->runtime-src->proj.ios_mac->ios->ZCZBarViewController.mm中#define
WIDTH和#define HEIGHT两个宏
本来因该是
#define WIDTH [UIScreen mainScreen].bounds.size.width
#define HEIGHT [UIScreen mainScreen].bounds.size.height
但在iphone4s(ios6.1.3)上取出的width和height为320, 480,而在iPhone6 Plus(ios10.2)上width和height为568, 320。
一个宽小于高,一个宽大于高,使得4s横屏的时候,6Plus竖屏是对的,而在6Plus上横屏就是乱的。
所以后来将两个宏修改为(注意:两边一定要带括号,防止编译时宏展开后由于操作符优先级导致的运算错误)
#define WIDTH ( ([UIScreen mainScreen].bounds.size.width>[UIScreen
mainScreen].bounds.size.height)?[UIScreen mainScreen].bounds.size.width:[UIScreen mainScreen].bounds.size.height )
#define HEIGHT ( ([UIScreen
mainScreen].bounds.size.width<[UIScreen mainScreen].bounds.size.height)?[UIScreen mainScreen].bounds.size.width:[UIScreen mainScreen].bounds.size.height )
从而将宽固定取获得的二者较大值,高为二者较小值。若是竖屏,则反过来。
-----5.遇到的一些问题
------------5.1对于ZCZBarViewController.mm中的initCpture方法中有句
AVAuthorizationStatus authStatus = [AVCaptureDeviceauthorizationStatusForMediaType:mediaType];
注意:此方法只对ios7以上的系统有用,如果是在ios6的系统的话就直接崩溃了,况且ios6上也没有“设置--隐私--相机”那一项。
所以加了if(IOS7)的判断。
------------5.2若碰到错误Cannot synthesize weak property in file using manual reference counting
项目->TARGETS->Build Settings->Apple
LLVM 8.0-Language-Objective C->Weak References in Manual Retian Release改为YES
------------5.3编译报错XXXX.o
若编译运行报错,XXXX.o什么什么的问题,则可能是有依赖框架没有导入。
-----6.参考链接
//原生生成二维码
http://blog.csdn.net/zhuming3834/article/details/50832953
//原生二维码扫描
http://www.cocoachina.com/ios/20161009/17696.html
//zBar下载地址
http://download.csdn.net/download/kid_devil/7552613
//zBarDemo下载地址
http://download.csdn.net/detail/shan1991fei/9474417
//二维码扫描之zXing与zBar的优劣
http://blog.csdn.net/l_215851356/article/details/51898514
这里我把所有生成二维码的代码和lua调用的扫描二维码方法都放在了项目->frameworks->runtime-src->proj.ios_mac->ios->AppController.h和AppController.mm中
而zBar sdk及相关类放到了 项目->frameworks->runtime-src->proj.ios_mac->ios下。
-----1.原生生成二维码
------------1.1AppController.h中添加代码:
//生成二维码 +(CIImage *) creatQRcodeWithUrlstring:(NSString *)urlString; //改变图片大小 (正方形图片) + (UIImage *)changeImageSizeWithCIImage:(CIImage *)ciImage andSize:(CGFloat)size; //保存(暂时没用) +(BOOL)writeImage:(UIImage*)image toFileAtPath:(NSString*)aPath; //生成二维码 +(void)createQRCode:(NSDictionary *)info;------------1.2AppController.mm中添加代码:
/** * 根据字符串生成二维码 CIImage 对象 * * @param urlString 需要生成二维码的字符串 * * @return 生成的二维码 */ + (CIImage *)creatQRcodeWithUrlstring:(NSString *)urlString{ // 1.实例化二维码滤镜 CIFilter *filter = [CIFilter filterWithName:@"CIQRCodeGenerator"]; // 2.恢复滤镜的默认属性 (因为滤镜有可能保存上一次的属性) [filter setDefaults]; // 3.将字符串转换成NSdata NSData *data = [urlString dataUsingEncoding:NSUTF8StringEncoding]; // 4.通过KVO设置滤镜, 传入data, 将来滤镜就知道要通过传入的数据生成二维码 [filter setValue:data forKey:@"inputMessage"]; // 5.生成二维码 CIImage *outputImage = [filter outputImage]; return outputImage; } /** * 改变图片大小 (正方形图片) * * @param ciImage 需要改变大小的CIImage 对象的图片 * @param size 图片大小 (正方形图片 只需要一个数) * * @return 生成的目标图片 */ + (UIImage *)changeImageSizeWithCIImage:(CIImage *)ciImage andSize:(CGFloat)size{ CGRect extent = CGRectIntegral(ciImage.extent); CGFloat scale = MIN(size/CGRectGetWidth(extent), size/CGRectGetHeight(extent)); // 创建bitmap; size_t width = CGRectGetWidth(extent) * scale; size_t height = CGRectGetHeight(extent) * scale; CGColorSpaceRef cs = CGColorSpaceCreateDeviceGray(); CGContextRef bitmapRef = CGBitmapContextCreate(nil, width, height, 8, 0, cs, (CGBitmapInfo)kCGImageAlphaNone); CIContext *context = [CIContext contextWithOptions:nil]; CGImageRef bitmapImage = [context createCGImage:ciImage fromRect:extent]; CGContextSetInterpolationQuality(bitmapRef, kCGInterpolationNone); CGContextScaleCTM(bitmapRef, scale, scale); CGContextDrawImage(bitmapRef, extent, bitmapImage); // 保存bitmap到图片 CGImageRef scaledImage = CGBitmapContextCreateImage(bitmapRef); CGContextRelease(bitmapRef); CGImageRelease(bitmapImage); return [UIImage imageWithCGImage:scaledImage]; } + (BOOL)writeImage:(UIImage*)image toFileAtPath:(NSString*)aPath { if ((image == nil) || (aPath == nil) || ([aPath isEqualToString:@""])) return NO; @try { NSData *imageData = nil; NSString *ext = [aPath pathExtension]; if ([ext isEqualToString:@"png"]) { imageData = UIImagePNGRepresentation(image); } else { // the rest, we write to jpeg // 0. best, 1. lost. about compress. imageData = UIImageJPEGRepresentation(image, 0); } if ((imageData == nil) || ([imageData length] <= 0)) return NO; [imageData writeToFile:aPath atomically:YES]; return YES; } @catch (NSException *e) { NSLog(@"create thumbnail exception."); } return NO; } /* * 项目-TARGETS-fightGame-mobile-Build Phases-Link Binary With Libraries添加CoreImage.framework */ +(void) createQRCode:(NSDictionary *)info { int _callBack = [[info objectForKey:@"listener"] intValue]; NSString *qrCodeStr = [info objectForKey:@"qrCodeStr"]; CIImage *ciImage = [self creatQRcodeWithUrlstring:qrCodeStr]; UIImage *uiImage = [self changeImageSizeWithCIImage:ciImage andSize:180]; NSData *imageData = UIImagePNGRepresentation(uiImage); std::string path = cocos2d::FileUtils::getInstance()->getWritablePath() + "qrCode.png"; const char* pathC = path.c_str(); NSString * pathN = [NSString stringWithUTF8String:pathC]; bool isSuccess = [imageData writeToFile:pathN atomically:YES]; cocos2d::LuaBridge::pushLuaFunctionById(_callBack); cocos2d::LuaValueDict dict; dict["isSuccess"] =cocos2d::LuaValue::booleanValue(isSuccess); cocos2d::LuaBridge::getStack()->pushLuaValueDict( dict ); cocos2d::LuaBridge::getStack()->executeFunction(1); cocos2d::LuaBridge::releaseLuaFunctionById(_callBack); }
其中createQRcode方法为最终lua掉用oc的方法,将生成的图片存到cocos2dx的writablePath下,并保存为"qrCode.png"。最后在lua端取出用sprite显示。
------------1.3lua调用createQRcode方法,并显示
local callBack = function (message) local filePath = cc.FileUtils:getInstance():getWritablePath() filePath = filePath.."qrCode.png" local rect = cc.rect(0, 0, 180, 180) local sprite = cc.Sprite:create() sprite:initWithFile(filePath, rect) sprite:setPosition(300, 300) self:addChild(sprite) end local info = {listener = callBack, qrCodeStr = "https://www.baidu.com/"} luaoc.callStaticMethod("AppController", "createQRCode", info)------------1.4添加CoreImage.framework依赖框架(二维码扫描需要用到)
项目->TARGETS->Build Phases->Link Binary With Libraries->左下角“+”号,search框中输入CoreImage.framework,选择匹配的选项即可。
-----2.zBar sdk实现二维码扫描
------------2.1下载zBar sdk
地址在后面给出。
------------2.2将zBarSDK解压并将解压后的zBarSDK导入到工程项目->frameworks->runtime-src->proj.ios_mac->ios下。
解压后的zBarSDK目录包含:Headers,libzbar.a,Resources。
如果导入工程后没有自动添加libzbar.a依赖框架,则需要手动添加该依赖框架(如1.4)。
------------2.3项目->frameworks->runtime-src->proj.ios_mac->ios->zBarSDK下新建ZCZBarViewController.h和ZCZBarViewController.mm两个文件,并导入工程,代码如下。
------------2.4ZCZBarViewController.h代码:
/* 版本说明 iOS研究院 305044955 1.8版本 剔除生成二维码文件,使用iOS7原生生成二维码 1.7版本 修复了开启相机点击,用户如果点击拒绝,会导致崩溃的问题 1.6版本 增加了支持了区别条码和二维码,可以关闭扫描二维码来增加条码扫描速度 1.5版本 修正了iOS6下扫描会卡死,增加了iOS7下支持条形码,修改了算法,增加了效率 1.4版本 支持iOS8系统,修改了相应UI的适配问题 1.3版本 全新支持arm7s arm64 全新支持ARC 1.2版本 ZC封装的ZBar二维码SDK 1、更新类名从CustomViewController更改为ZCZBarViewController 2、删除掉代理的相关代码 1.1版本 ZC封装的ZBar二维码SDK~ 1、增加block回调 2、取消代理 3、增加适配IOS7(ios7在AVFoundation中增加了扫描二维码功能) 1.0版本 ZC封装的ZBar二维码SDK~1.0版本初始建立 二维码编译顺序 Zbar编译 需要添加AVFoundation CoreMedia CoreVideo QuartzCore libiconv //示例代码 扫描代码 BOOL代表是否关闭二维码扫描,专门扫描条形码 ZCZBarViewController*vc=[[ZCZBarViewController alloc]initWithIsQRCode:NO Block:^(NSString *result, BOOL isFinish) { if (isFinish) { NSLog(@"最后的结果%@",result); } }]; [self presentViewController:vc animated:YES completion:nil]; 生成二维码 [ZCZBarViewController createImageWithImageView:imageView String:@"http://www.baidu.com"Scale:4]; */ #import <UIKit/UIKit.h> #import <AVFoundation/AVFoundation.h> #import "ZBarReaderController.h" #import <CoreImage/CoreImage.h> #define IOS7 [[[UIDevice currentDevice] systemVersion]floatValue]>=7 @interface ZCZBarViewController : UIViewController<AVCaptureVideoDataOutputSampleBufferDelegate, UINavigationControllerDelegate, UIImagePickerControllerDelegate,ZBarReaderDelegate,AVCaptureMetadataOutputObjectsDelegate> { int num; BOOL upOrdown; NSTimer * timer; UIImageView*_line; } @property (nonatomic,strong) AVCaptureVideoPreviewLayer *captureVideoPreviewLayer; @property (nonatomic, strong) AVCaptureSession *captureSession; @property (nonatomic, assign) BOOL isScanning; @property (nonatomic,copy)void(^ScanResult)(NSString*result,BOOL isSucceed); @property (nonatomic)BOOL isQRCode; //初始化函数 -(id)initWithIsQRCode:(BOOL)isQRCode Block:(void(^)(NSString*,BOOL))a; //正则表达式对扫描结果筛选 +(NSString*)zhengze:(NSString*)str; //创建二维码 +(void)createImageWithImageView:(UIImageView*)imageView String:(NSString*)str Scale:(CGFloat)scale; @end------------2.4ZCZBarViewController.mm代码:
#import "ZCZBarViewController.h" #import <AssetsLibrary/AssetsLibrary.h> @interface ZCZBarViewController () @end #define WIDTH ( ([UIScreen mainScreen].bounds.size.width>[UIScreen mainScreen].bounds.size.height)?[UIScreen mainScreen].bounds.size.width:[UIScreen mainScreen].bounds.size.height ) //[UIScreen mainScreen].bounds.size.width #define HEIGHT ( ([UIScreen mainScreen].bounds.size.width<[UIScreen mainScreen].bounds.size.height)?[UIScreen mainScreen].bounds.size.width:[UIScreen mainScreen].bounds.size.height ) //[UIScreen mainScreen].bounds.size.height @implementation ZCZBarViewController - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil { self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]; if (self) { // Custom initialization } return self; } -(id)initWithIsQRCode:(BOOL)isQRCode Block:(void(^)(NSString*,BOOL))a { if (self=[super init]) { self.ScanResult=a; self.isQRCode=isQRCode; } return self; } -(void)createView{ //qrcode_scan_bg_Green_iphone5@2x.png qrcode_scan_bg_Green@2x.png UIImage*image= [UIImage imageNamed:@"qrcode_scan_bg_Green@2x.png"]; float capWidth=image.size.width/2; float capHeight=image.size.height/2; image=[image stretchableImageWithLeftCapWidth:capWidth topCapHeight:capHeight]; UIImageView* bgImageView=[[UIImageView alloc]initWithFrame:CGRectMake(0, 64, WIDTH, HEIGHT-64)]; //bgImageView.contentMode=UIViewContentModeTop; bgImageView.clipsToBounds=YES; bgImageView.image=image; bgImageView.userInteractionEnabled=YES; [self.view addSubview:bgImageView]; // UILabel * label = [[UILabel alloc] initWithFrame:CGRectMake(0, bgImageView.frame.size.height-140, WIDTH, 40)]; // label.text = @"将取景框对准二维码,即可自动扫描。"; // label.textColor = [UIColor whiteColor]; // label.textAlignment = NSTextAlignmentCenter; // label.lineBreakMode = NSLineBreakByWordWrapping; // label.numberOfLines = 2; // label.font=[UIFont systemFontOfSize:12]; // label.backgroundColor = [UIColor clearColor]; // [bgImageView addSubview:label]; _line = [[UIImageView alloc] initWithFrame:CGRectMake((WIDTH-220)/2, 70, 220, 2)]; _line.image = [UIImage imageNamed:@"qrcode_scan_light_green.png"]; [bgImageView addSubview:_line]; // //下方相册 // UIImageView*scanImageView=[[UIImageView alloc]initWithFrame:CGRectMake(0, HEIGHT-100, WIDTH, 100)]; // scanImageView.image=[UIImage imageNamed:@"qrcode_scan_bar.png"]; // scanImageView.userInteractionEnabled=YES; // [self.view addSubview:scanImageView]; // NSArray*unSelectImageNames=@[@"qrcode_scan_btn_photo_nor.png",@"qrcode_scan_btn_flash_nor.png",@"qrcode_scan_btn_myqrcode_nor.png"]; // NSArray*selectImageNames=@[@"qrcode_scan_btn_photo_down.png",@"qrcode_scan_btn_flash_down.png",@"qrcode_scan_btn_myqrcode_down.png"]; // // for (int i=0; i<unSelectImageNames.count; i++) { // UIButton*button=[UIButton buttonWithType:UIButtonTypeCustom]; // [button setImage:[UIImage imageNamed:unSelectImageNames[i]] forState:UIControlStateNormal]; // [button setImage:[UIImage imageNamed:selectImageNames[i]] forState:UIControlStateHighlighted]; // button.frame=CGRectMake(WIDTH/3*i, 0, WIDTH/3, 100); // [scanImageView addSubview:button]; // if (i==0) { // [button addTarget:self action:@selector(pressPhotoLibraryButton:) forControlEvents:UIControlEventTouchUpInside]; // } // if (i==1) { // [button addTarget:self action:@selector(flashLightClick) forControlEvents:UIControlEventTouchUpInside]; // } // if (i==2) { // button.hidden=YES; // } // // } //假导航 // UIImageView*navImageView=[[UIImageView alloc]initWithFrame:CGRectMake(0, 0, WIDTH, 64)]; // navImageView.image=[UIImage imageNamed:@"qrcode_scan_bar.png"]; // navImageView.userInteractionEnabled=YES; // [self.view addSubview:navImageView]; UILabel*titleLabel=[[UILabel alloc]initWithFrame:CGRectMake(WIDTH/2-32, 20, 64, 44)]; titleLabel.textColor=[UIColor whiteColor]; titleLabel.backgroundColor = [UIColor clearColor]; titleLabel.text=@"扫一扫"; [self.view addSubview:titleLabel]; // [navImageView addSubview:titleLabel]; UIButton*button = [UIButton buttonWithType:UIButtonTypeCustom]; [button setImage:[UIImage imageNamed:@"qrcode_scan_titlebar_back_pressed@2x.png"] forState:UIControlStateHighlighted]; [button setImage:[UIImage imageNamed:@"qrcode_scan_titlebar_back_nor.png"] forState:UIControlStateNormal]; [button setFrame:CGRectMake(10,10, 48, 48)]; [button addTarget:self action:@selector(pressCancelButton:) forControlEvents:UIControlEventTouchUpInside]; [self.view addSubview:button]; timer = [NSTimer scheduledTimerWithTimeInterval:2 target:self selector:@selector(animation1) userInfo:nil repeats:YES]; } -(void)animation1 { [UIView animateWithDuration:2 animations:^{ _line.frame = CGRectMake((WIDTH-220)/2, 70+HEIGHT-310, 220, 2); }completion:^(BOOL finished) { [UIView animateWithDuration:2 animations:^{ _line.frame = CGRectMake((WIDTH-220)/2, 70, 220, 2); }]; }]; } //开启关闭闪光灯 -(void)flashLightClick{ AVCaptureDevice * device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo]; if (device.torchMode==AVCaptureTorchModeOff) { //闪光灯开启 [device lockForConfiguration:nil]; [device setTorchMode:AVCaptureTorchModeOn]; }else { //闪光灯关闭 [device setTorchMode:AVCaptureTorchModeOff]; } } - (void)viewDidLoad { //相机界面的定制在self.view上加载即可 BOOL Custom= [UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera];//判断摄像头是否能用 if (Custom) { [self initCapture];//启动摄像头 }else{ self.view.backgroundColor=[UIColor whiteColor]; } [super viewDidLoad]; [self createView]; } #pragma mark 选择相册 - (void)pressPhotoLibraryButton:(UIButton *)button { if (timer) { [timer invalidate]; timer=nil; } _line.frame = CGRectMake((WIDTH-220)/2, 70, 220, 2); num = 0; upOrdown = NO; UIImagePickerController *picker = [[UIImagePickerController alloc] init]; picker.allowsEditing = YES; picker.delegate = self; picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; [self presentViewController:picker animated:YES completion:^{ self.isScanning = NO; [self.captureSession stopRunning]; }]; } #pragma mark 点击取消 - (void)pressCancelButton:(UIButton *)button { self.isScanning = NO; [self.captureSession stopRunning]; self.ScanResult(nil,NO); if (timer) { [timer invalidate]; timer=nil; } _line.frame = CGRectMake((WIDTH-220)/2, 70, 220, 2); num = 0; upOrdown = NO; [self dismissViewControllerAnimated:YES completion:nil]; } #pragma mark 开启相机 - (void)initCapture { //ios6上也没有“设置--隐私--相机” 那一项 if (IOS7) { NSString *mediaType = AVMediaTypeVideo; AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:mediaType]; if(authStatus == AVAuthorizationStatusRestricted || authStatus == AVAuthorizationStatusDenied){ NSString*str=[NSString stringWithFormat:@"请在系统设置-%@-相机中打开允许使用相机", [[[NSBundle mainBundle] infoDictionary] objectForKey:(NSString*)kCFBundleNameKey]]; UIAlertView *alert=[[UIAlertView alloc]initWithTitle:@"提示" message:str delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil, nil]; [alert show]; return; } } self.captureSession = [[AVCaptureSession alloc] init]; AVCaptureDevice* inputDevice = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo]; AVCaptureDeviceInput *captureInput = [AVCaptureDeviceInput deviceInputWithDevice:inputDevice error:nil]; [self.captureSession addInput:captureInput]; AVCaptureVideoDataOutput *captureOutput = [[AVCaptureVideoDataOutput alloc] init]; captureOutput.alwaysDiscardsLateVideoFrames = YES; if (IOS7) { AVCaptureMetadataOutput*_output=[[AVCaptureMetadataOutput alloc]init]; [_output setMetadataObjectsDelegate:self queue:dispatch_get_main_queue()]; [self.captureSession setSessionPreset:AVCaptureSessionPresetHigh]; [self.captureSession addOutput:_output]; //在这里修改了,可以让原生兼容二维码和条形码,无需在使用Zbar if (_isQRCode) { _output.metadataObjectTypes =@[AVMetadataObjectTypeQRCode]; }else{ _output.metadataObjectTypes =@[AVMetadataObjectTypeEAN13Code,AVMetadataObjectTypeEAN8Code,AVMetadataObjectTypeCode128Code,AVMetadataObjectTypeQRCode]; } if (!self.captureVideoPreviewLayer) { self.captureVideoPreviewLayer = [AVCaptureVideoPreviewLayer layerWithSession:self.captureSession]; } // NSLog(@"prev %p %@", self.prevLayer, self.prevLayer); self.captureVideoPreviewLayer.frame = CGRectMake(0, 0, WIDTH, HEIGHT);//self.view.bounds; self.captureVideoPreviewLayer.videoGravity = AVLayerVideoGravityResizeAspectFill; [self.view.layer addSublayer: self.captureVideoPreviewLayer]; self.isScanning = YES; [self.captureSession startRunning]; }else{ dispatch_queue_t queue = dispatch_queue_create("myQueue", NULL); [captureOutput setSampleBufferDelegate:self queue:queue]; NSString* key = (NSString *)kCVPixelBufferPixelFormatTypeKey; NSNumber* value = [NSNumber numberWithUnsignedInt:kCVPixelFormatType_32BGRA]; NSDictionary *videoSettings = [NSDictionary dictionaryWithObject:value forKey:key]; [captureOutput setVideoSettings:videoSettings]; [self.captureSession addOutput:captureOutput]; NSString* preset = 0; if (NSClassFromString(@"NSOrderedSet") && // Proxy for "is this iOS 5" ... [UIScreen mainScreen].scale > 1 && [inputDevice supportsAVCaptureSessionPreset:AVCaptureSessionPresetiFrame960x540]) { // NSLog(@"960"); preset = AVCaptureSessionPresetiFrame960x540; } if (!preset) { // NSLog(@"MED"); preset = AVCaptureSessionPresetMedium; } self.captureSession.sessionPreset = preset; if (!self.captureVideoPreviewLayer) { self.captureVideoPreviewLayer = [AVCaptureVideoPreviewLayer layerWithSession:self.captureSession]; } // NSLog(@"prev %p %@", self.prevLayer, self.prevLayer); self.captureVideoPreviewLayer.frame = CGRectMake(0, 0, WIDTH, HEIGHT);//self.view.bounds; self.captureVideoPreviewLayer.videoGravity = AVLayerVideoGravityResizeAspectFill; [self.view.layer addSublayer: self.captureVideoPreviewLayer]; self.isScanning = YES; [self.captureSession startRunning]; } } - (UIImage *) imageFromSampleBuffer:(CMSampleBufferRef) sampleBuffer { CVImageBufferRef imageBuffer = CMSampleBufferGetImageBuffer(sampleBuffer); // Lock the base address of the pixel buffer CVPixelBufferLockBaseAddress(imageBuffer,0); // Get the number of bytes per row for the pixel buffer size_t bytesPerRow = CVPixelBufferGetBytesPerRow(imageBuffer); // Get the pixel buffer width and height size_t width = CVPixelBufferGetWidth(imageBuffer); size_t height = CVPixelBufferGetHeight(imageBuffer); // Create a device-dependent RGB color space CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB(); if (!colorSpace) { NSLog(@"CGColorSpaceCreateDeviceRGB failure"); return nil; } // Get the base address of the pixel buffer void *baseAddress = CVPixelBufferGetBaseAddress(imageBuffer); // Get the data size for contiguous planes of the pixel buffer. size_t bufferSize = CVPixelBufferGetDataSize(imageBuffer); // Create a Quartz direct-access data provider that uses data we supply CGDataProviderRef provider = CGDataProviderCreateWithData(NULL, baseAddress, bufferSize, NULL); // Create a bitmap image from data supplied by our data provider CGImageRef cgImage = CGImageCreate(width, height, 8, 32, bytesPerRow, colorSpace, kCGImageAlphaNoneSkipFirst | kCGBitmapByteOrder32Little, provider, NULL, true, kCGRenderingIntentDefault); CGDataProviderRelease(provider); CGColorSpaceRelease(colorSpace); // Create and return an image object representing the specified Quartz image UIImage *image = [UIImage imageWithCGImage:cgImage]; return image; } #pragma mark 对图像进行解码 - (void)decodeImage:(UIImage *)image { self.isScanning = NO; ZBarSymbol *symbol = nil; ZBarReaderController* read = [ZBarReaderController new]; read.readerDelegate = self; CGImageRef cgImageRef = image.CGImage; for(symbol in [read scanImage:cgImageRef])break; if (symbol!=nil) { if (timer) { [timer invalidate]; timer=nil; } _line.frame = CGRectMake((WIDTH-220)/2, 70, 220, 2); num = 0; upOrdown = NO; self.ScanResult(symbol.data,YES); [self.captureSession stopRunning]; [self dismissViewControllerAnimated:YES completion:nil]; }else{ timer = [NSTimer scheduledTimerWithTimeInterval:.02 target:self selector:@selector(animation1) userInfo:nil repeats:YES]; num = 0; upOrdown = NO; self.isScanning = YES; [self.captureSession startRunning]; } } #pragma mark - AVCaptureVideoDataOutputSampleBufferDelegate - (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer fromConnection:(AVCaptureConnection *)connection { UIImage *image = [self imageFromSampleBuffer:sampleBuffer]; [self decodeImage:image]; } #pragma mark AVCaptureMetadataOutputObjectsDelegate//IOS7下触发 - (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputMetadataObjects:(NSArray *)metadataObjects fromConnection:(AVCaptureConnection *)connection { if (metadataObjects.count>0) { AVMetadataMachineReadableCodeObject * metadataObject = [metadataObjects objectAtIndex:0]; self.ScanResult(metadataObject.stringValue,YES); } [self.captureSession stopRunning]; _line.frame = CGRectMake((WIDTH-220)/2, 70, 220, 2); num = 0; upOrdown = NO; [self dismissViewControllerAnimated:YES completion:nil]; } #pragma mark - UIImagePickerControllerDelegate - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { if (timer) { [timer invalidate]; timer=nil; } _line.frame = CGRectMake((WIDTH-220)/2, 70, 220, 2); num = 0; upOrdown = NO; UIImage *image = [info objectForKey:@"UIImagePickerControllerEditedImage"]; [self dismissViewControllerAnimated:YES completion:^{[self decodeImage:image];}]; } - (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker { if (timer) { [timer invalidate]; timer=nil; } _line.frame = CGRectMake((WIDTH-220)/2, 70, 220, 2); num = 0; upOrdown = NO; timer = [NSTimer scheduledTimerWithTimeInterval:2 target:self selector:@selector(animation1) userInfo:nil repeats:YES]; [self dismissViewControllerAnimated:YES completion:^{ self.isScanning = YES; [self.captureSession startRunning]; }]; } #pragma mark - DecoderDelegate +(NSString*)zhengze:(NSString*)str { NSError *error; //http+:[^\\s]* 这是检测网址的正则表达式 NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"http+:[^\\s]*" options:0 error:&error];//筛选 if (regex != nil) { NSTextCheckingResult *firstMatch = [regex firstMatchInString:str options:0 range:NSMakeRange(0, [str length])]; if (firstMatch) { NSRange resultRange = [firstMatch rangeAtIndex:0]; //从urlString中截取数据 NSString *result1 = [str substringWithRange:resultRange]; NSLog(@"正则表达后的结果%@",result1); return result1; } } return nil; } +(void)createImageWithImageView:(UIImageView*)imageView String:(NSString*)str Scale:(CGFloat)scale{ CIFilter *filter = [CIFilter filterWithName:@"CIQRCodeGenerator"]; [filter setDefaults]; NSData *data = [str dataUsingEncoding:NSUTF8StringEncoding]; [filter setValue:data forKey:@"inputMessage"]; CIImage *outputImage = [filter outputImage]; CIContext *context = [CIContext contextWithOptions:nil]; CGImageRef cgImage = [context createCGImage:outputImage fromRect:[outputImage extent]]; UIImage *image = [UIImage imageWithCGImage:cgImage scale:1.0 orientation:UIImageOrientationUp]; UIImage *resized = nil; CGFloat width = image.size.width*scale; CGFloat height = image.size.height*scale; UIGraphicsBeginImageContext(CGSizeMake(width, height)); CGContextRef context1 = UIGraphicsGetCurrentContext(); CGContextSetInterpolationQuality(context1, kCGInterpolationNone); [image drawInRect:CGRectMake(0, -50, width, height)]; resized = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); imageView.image = resized; CGImageRelease(cgImage); } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } /* #pragma mark - Navigation // In a storyboard-based application, you will often want to do a little preparation before navigation - (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender { // Get the new view controller using [segue destinationViewController]. // Pass the selected object to the new view controller. } */ ////支持旋转 //-(BOOL)shouldAutorotate{ // return NO; //} ////支持的方向 //- (UIInterfaceOrientationMask)supportedInterfaceOrientations { // return UIInterfaceOrientationMaskPortrait; //} @end
------------2.5AppController.h中添加代码:
//获取当前正在显示的ViewController + (UIViewController *)getCurrentVC; //获取当前屏幕中present出来的viewcontroller。 - (UIViewController *)getPresentedViewController; //扫描二维码 +(void)scanQRCode:(NSDictionary *)info;------------2.5AppController.mm中添加代码:
//获取当前正在显示的ViewController + (UIViewController *)getCurrentVC { UIViewController *result = nil; UIWindow * window = [[UIApplication sharedApplication] keyWindow]; if (window.windowLevel != UIWindowLevelNormal) { NSArray *windows = [[UIApplication sharedApplication] windows]; for(UIWindow * tmpWin in windows) { if (tmpWin.windowLevel == UIWindowLevelNormal) { window = tmpWin; break; } } } UIView *frontView = [[window subviews] objectAtIndex:0]; id nextResponder = [frontView nextResponder]; if ([nextResponder isKindOfClass:[UIViewController class]]) result = nextResponder; else result = window.rootViewController; return result; } //获取当前屏幕中present出来的viewcontroller。 - (UIViewController *)getPresentedViewController { UIViewController *appRootVC = [UIApplication sharedApplication].keyWindow.rootViewController; UIViewController *topVC = appRootVC; if (topVC.presentedViewController) { topVC = topVC.presentedViewController; } return topVC; } +(void) scanQRCode:(NSDictionary *)info { int _callBack = [[info objectForKey:@"listener"] intValue]; // SGScanningQRCodeVC *scanningQRCodeVC = [[SGScanningQRCodeVC alloc] init]; // [scanningQRCodeVC setupScanningQRCode]; UIViewController *nowViewController = [self getCurrentVC]; ZCZBarViewController*vc=[[ZCZBarViewController alloc]initWithIsQRCode:NO Block:^(NSString *result, BOOL isFinish) { if (isFinish) { NSLog(@"最后的结果%@",result); UIViewController *nowViewController = [self getCurrentVC]; dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.02 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{ [nowViewController dismissViewControllerAnimated:NO completion:nil]; cocos2d::LuaBridge::pushLuaFunctionById(_callBack); cocos2d::LuaValueDict dict; dict["scanResult"] = cocos2d::LuaValue::stringValue([result UTF8String]); cocos2d::LuaBridge::getStack()->pushLuaValueDict(dict); cocos2d::LuaBridge::getStack()->executeFunction(1); cocos2d::LuaBridge::releaseLuaFunctionById(_callBack); }); } }]; [nowViewController presentViewController:vc animated:YES completion:nil]; }其中scanQRCode方法为最终lua掉用oc的方法,在扫描识别出二维码信息之后会将信息传回给lua端。
------------2.6lua掉用oc扫描二维码代码:
local callBack = function (message) print("message scanResult : ", message.scanResult) Utils.showTip(message.scanResult) end local info = {listener = callBack} luaoc.callStaticMethod("AppController", "scanQRCode", info)------------2.7添加依赖框架
如上1.4,扫描二维码需要添加框架AVFoundation, CoreMedie, CoreVideo, QuartzCore, libiconv
-----3.扫描界面横竖屏说明
如果游戏界面是横屏的,而二维码扫描界面要求是竖屏的,则需要做些操作。
------------3.1增加竖屏支持
项目->TARGETS->General->Deployment Info->Device Orientation->勾选Portrait,Landscape Left, Landscape Right。
------------3.2让游戏界面只支持横屏
项目->frameworks->runtime-src->proj.ios_mac->ios->RootViewController.mm中supportedInterfaceOrientations方法修改为:
// For ios6, use supportedInterfaceOrientations & shouldAutorotate instead - (NSUInteger) supportedInterfaceOrientations{ return UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight; //#ifdef __IPHONE_6_0 // return UIInterfaceOrientationMaskAllButUpsideDown; //#endif }------------3.3扫描二维码界面只支持竖屏
项目->frameworks->runtime-src->proj.ios_mac->ios->ZCZBarViewController.mm中增加代码:
////支持旋转 //-(BOOL)shouldAutorotate{ // return NO; //} ////支持的方向 //- (UIInterfaceOrientationMask)supportedInterfaceOrientations { // return UIInterfaceOrientationMaskPortrait; //}------------3.4修改view界面width和height重新适配
项目->frameworks->runtime-src->proj.ios_mac->ios->ZCZBarViewController.mm中将
#define WIDTH和#define HEIGHT两个宏的值颠倒下。
-----4.关于项目->frameworks->runtime-src->proj.ios_mac->ios->ZCZBarViewController.mm中#define
WIDTH和#define HEIGHT两个宏
本来因该是
#define WIDTH [UIScreen mainScreen].bounds.size.width
#define HEIGHT [UIScreen mainScreen].bounds.size.height
但在iphone4s(ios6.1.3)上取出的width和height为320, 480,而在iPhone6 Plus(ios10.2)上width和height为568, 320。
一个宽小于高,一个宽大于高,使得4s横屏的时候,6Plus竖屏是对的,而在6Plus上横屏就是乱的。
所以后来将两个宏修改为(注意:两边一定要带括号,防止编译时宏展开后由于操作符优先级导致的运算错误)
#define WIDTH ( ([UIScreen mainScreen].bounds.size.width>[UIScreen
mainScreen].bounds.size.height)?[UIScreen mainScreen].bounds.size.width:[UIScreen mainScreen].bounds.size.height )
#define HEIGHT ( ([UIScreen
mainScreen].bounds.size.width<[UIScreen mainScreen].bounds.size.height)?[UIScreen mainScreen].bounds.size.width:[UIScreen mainScreen].bounds.size.height )
从而将宽固定取获得的二者较大值,高为二者较小值。若是竖屏,则反过来。
-----5.遇到的一些问题
------------5.1对于ZCZBarViewController.mm中的initCpture方法中有句
AVAuthorizationStatus authStatus = [AVCaptureDeviceauthorizationStatusForMediaType:mediaType];
注意:此方法只对ios7以上的系统有用,如果是在ios6的系统的话就直接崩溃了,况且ios6上也没有“设置--隐私--相机”那一项。
所以加了if(IOS7)的判断。
------------5.2若碰到错误Cannot synthesize weak property in file using manual reference counting
项目->TARGETS->Build Settings->Apple
LLVM 8.0-Language-Objective C->Weak References in Manual Retian Release改为YES
------------5.3编译报错XXXX.o
若编译运行报错,XXXX.o什么什么的问题,则可能是有依赖框架没有导入。
-----6.参考链接
//原生生成二维码
http://blog.csdn.net/zhuming3834/article/details/50832953
//原生二维码扫描
http://www.cocoachina.com/ios/20161009/17696.html
//zBar下载地址
http://download.csdn.net/download/kid_devil/7552613
//zBarDemo下载地址
http://download.csdn.net/detail/shan1991fei/9474417
//二维码扫描之zXing与zBar的优劣
http://blog.csdn.net/l_215851356/article/details/51898514
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