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:
[cpp] view plain copy- //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
[cpp] view plain copy- 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:
[cpp] view plain copy- //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://www.voidcn.com/article/p-zcstxcne-dx.html
//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