iOS原生二维码\条形码扫描与生成

重点

1、它是横屏情况下的frame所以宽高和XY值需反向操作。就是按照竖屏模式应该将原先是XYWH要改为YXHW来设置;

2.设置相机和相册权限

NSCameraUsageDescription (相机权限访问)

NSPhotoLibraryUsageDescription (相册权限访问);

3.根据二维码或条形码格式不一样,设置支持的码流样式;

4.扫描到结果后需要停止扫描,不然会持续回到扫描结果;

代码:

- (void)instanceDevice

{

_isBarCode = YES;

self.scanBoxheight = self.scanBoxWidth = 200;

if (_isBarCode) {

self.scanBoxheight = 60;

self.scanBoxWidth = DeviceMaxWidth-20;

}

// //添加一个背景图片

CGRect mImagerect = CGRectMake((DeviceMaxWidth-self.scanBoxWidth)/2.0, (DeviceMaxHeight-self.scanBoxheight)/2, self.scanBoxWidth, self.scanBoxheight);

// [scanZomeBack setFrame:mImagerect];

CGRectscanCrop=[selfgetScanCrop:mImagerectreaderViewBounds:self.frame];

// [self addSubview:scanZomeBack];

//获取摄像设备

AVCaptureDevice * device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];

//创建输入流

AVCaptureDeviceInput * input = [AVCaptureDeviceInput deviceInputWithDevice:device error:nil];

//创建输出流

AVCaptureMetadataOutput * output = [[AVCaptureMetadataOutput alloc]init];

//设置代理在主线程里刷新

[outputsetMetadataObjectsDelegate:self queue:dispatch_get_main_queue()];

output.rectOfInterest= scanCrop;

//初始化链接对象

session = [[AVCaptureSession alloc]init];

//高质量采集率

[session setSessionPreset:AVCaptureSessionPresetHigh];

if(input) {

[sessionaddInput:input];

}

if(output) {

[sessionaddOutput:output];

//设置扫码支持的编码格式(如下设置条形码和二维码兼容)

NSMutableArray *a = [[NSMutableArray alloc] init];

if ([output.availableMetadataObjectTypes containsObject:AVMetadataObjectTypeQRCode]) {

[aaddObject:AVMetadataObjectTypeQRCode];

}

if ([output.availableMetadataObjectTypes containsObject:AVMetadataObjectTypeEAN13Code]) {

[aaddObject:AVMetadataObjectTypeEAN13Code];

}

if ([output.availableMetadataObjectTypes containsObject:AVMetadataObjectTypeEAN8Code]) {

[aaddObject:AVMetadataObjectTypeEAN8Code];

}

if ([output.availableMetadataObjectTypes containsObject:AVMetadataObjectTypeCode128Code]) {

[aaddObject:AVMetadataObjectTypeCode128Code];

}

if ([output.availableMetadataObjectTypes containsObject:AVMetadataObjectTypePDF417Code]) {

[aaddObject:AVMetadataObjectTypePDF417Code];

}

if ([output.availableMetadataObjectTypes containsObject:AVMetadataObjectTypeUPCECode]) {

[aaddObject:AVMetadataObjectTypeUPCECode];

}

if ([output.availableMetadataObjectTypes containsObject:AVMetadataObjectTypeCode39Code]) {

[aaddObject:AVMetadataObjectTypeCode39Code];

}

if ([output.availableMetadataObjectTypes containsObject:AVMetadataObjectTypeCode93Code]) {

[aaddObject:AVMetadataObjectTypeCode93Code];

}

if ([output.availableMetadataObjectTypes containsObject:AVMetadataObjectTypeCode39Mod43Code]) {

[aaddObject:AVMetadataObjectTypeCode39Mod43Code];

}

output.metadataObjectTypes=a;

}

AVCaptureVideoPreviewLayer * layer = [AVCaptureVideoPreviewLayer layerWithSession:session];

layer.videoGravity=AVLayerVideoGravityResizeAspectFill;

layer.frame=self.layer.bounds;

[self.layer insertSublayer:layer atIndex:0];

[self setOverlayPickerView:self];

//开始捕获

[session startRunning];

}

//设置扫描线动画

-(void)loopDrawLine

{

_is_AnmotionFinished = NO;

CGRect rect = CGRectMake((DeviceMaxWidth-self.scanBoxWidth)/2.0, (DeviceMaxHeight-self.scanBoxheight)/2.0-10, self.scanBoxWidth, 2);

if (_readLineView) {

_readLineView.alpha = 1;

_readLineView.frame= rect;

}

else{

_readLineView= [[UIImageViewalloc]initWithFrame:rect];

[_readLineView setImage:[UIImage imageNamed:@"zbarscanline1"]];

[self addSubview:_readLineView];

}

[UIView animateWithDuration:1.5 animations:^{

//修改fream的代码写在这里

_readLineView.frame =CGRectMake((DeviceMaxWidth-self.scanBoxWidth)/2.0, CGRectGetMaxY(rect)+self.scanBoxheight, self.scanBoxWidth, 2);

}completion:^(BOOLfinished) {

if(!_is_Anmotion) {

[selfloopDrawLine];

}

_is_AnmotionFinished = YES;

}];

}

#pragma mark 二维码扫描框

- (void)setOverlayPickerView:(QRCodeReaderView*)reader

{

UIView*overlayView = [[UIViewalloc]initWithFrame:CGRectMake(0,64,kScreenWidth,kScreenHeight)];

overlayView.backgroundColor= [UIColorclearColor];

UIView*focusRect = [[UIViewalloc]initWithFrame:CGRectMake((DeviceMaxWidth-self.scanBoxWidth)/2.0, (kScreenHeight-self.scanBoxheight) /2.0-20-50,self.scanBoxWidth,self.scanBoxheight)];

focusRect.backgroundColor = [UIColor clearColor];

[overlayViewaddSubview:focusRect];

UIImageView *lefttop=[[UIImageView alloc]initWithFrame:CGRectMake(0,0,20,20)];

lefttop.image=[UIImage imageNamed:@"QRCodeCorner_LeftTop.png"];

[focusRectaddSubview:lefttop];

UIImageView*righttop=[[UIImageViewalloc]initWithFrame:CGRectMake(focusRect.frame.size.width-20,0,20,20)];

righttop.image=[UIImage imageNamed:@"QRCodeCorner_RightTop.png"];

[focusRectaddSubview:righttop];

UIImageView*leftbottom=[[UIImageViewalloc]initWithFrame:CGRectMake(0,focusRect.frame.size.height-20,20,20)];

leftbottom.image=[UIImage imageNamed:@"QRCodeCorner_LeftButtom.png"];

[focusRectaddSubview:leftbottom];

UIImageView*rightbottom=[[UIImageViewalloc]initWithFrame:CGRectMake(focusRect.frame.size.width-20,focusRect.frame.size.height-20,20,20)];

rightbottom.image=[UIImage imageNamed:@"QRCodeCorner_RightButtom.png"];

[focusRectaddSubview:rightbottom];

UIView*focusRectTop = [[UIViewalloc]initWithFrame:CGRectMake(0,0,kScreenWidth,focusRect.frame.origin.y)];

focusRectTop.backgroundColor= [UIColorblackColor];

focusRectTop.alpha=0.7;

[overlayViewaddSubview:focusRectTop];

UIView*focusRectLeft = [[UIViewalloc]initWithFrame:CGRectMake(0,focusRect.frame.origin.y,focusRect.frame.origin.x, focusRect.frame.size.height)];

focusRectLeft.backgroundColor= [UIColorblackColor];

focusRectLeft.alpha=0.7;

[overlayViewaddSubview:focusRectLeft];

UIView*focusRectRight = [[UIViewalloc]initWithFrame:CGRectMake(CGRectGetMaxX(focusRect.frame),focusRect.frame.origin.y,focusRect.frame.origin.x, focusRect.frame.size.height)];

focusRectRight.backgroundColor= [UIColorblackColor];

focusRectRight.alpha=0.7;

[overlayViewaddSubview:focusRectRight];

UIView*focusRectBottom = [[UIViewalloc]initWithFrame:CGRectMake(0,CGRectGetMaxY(focusRectRight.frame),kScreenWidth,kScreenHeight-CGRectGetMaxY(focusRectRight.frame))];

focusRectBottom.backgroundColor= [UIColorblackColor];

focusRectBottom.alpha=0.7;

[overlayViewaddSubview:focusRectBottom];

UILabel*label = [[UILabelalloc]initWithFrame:CGRectMake(0,CGRectGetMaxY(focusRect.frame) +20,kScreenWidth,20)];

label.backgroundColor = [UIColor clearColor];

label.font = [UIFont boldSystemFontOfSize:14];

label.textColor= [UIColorwhiteColor];

label.numberOfLines=0;

label.textAlignment = NSTextAlignmentCenter;

label.text = @"将二维码/条码放人框内，即可扫描";

[overlayViewaddSubview:label];

[readeraddSubview:overlayView];

if (!_isHomeScan) {

UIButton *manualBtn = [UIButton buttonWithType:UIButtonTypeCustom];

manualBtn.frame=CGRectMake((DeviceMaxWidth-50*widthRate)/2,CGRectGetMaxY(focusRect.frame) +20+20,50*widthRate,50*widthRate);

[manualBtnsetTitle:@"手动添加"forState:UIControlStateNormal];

[manualBtn.titleLabel setFont:[UIFont boldSystemFontOfSize:14]];

[manualBtnsetTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];

[manualBtnaddTarget:self action:@selector(manualBtnClick:) forControlEvents:UIControlEventTouchUpInside];

[overlayViewaddSubview:manualBtn];

}

#pragma mark 根据扫描框坐标确定实际扫描区域

-(CGRect)getScanCrop:(CGRect)rect readerViewBounds:(CGRect)readerViewBounds

{

CGFloatx,y,width,height;

// width = (CGFloat)(rect.size.height+10)/readerViewBounds.size.height;

// height = (CGFloat)(rect.size.width-50)/readerViewBounds.size.width;

// x = (1-width)/2;

// y = (1-height)/2;

x = (CGRectGetHeight(readerViewBounds)-CGRectGetHeight(rect))/2/CGRectGetHeight(readerViewBounds);

y = (CGRectGetWidth(readerViewBounds)-CGRectGetWidth(rect))/2/CGRectGetWidth(readerViewBounds);

width =CGRectGetHeight(rect)/CGRectGetHeight(readerViewBounds);

height =CGRectGetWidth(rect)/CGRectGetWidth(readerViewBounds);

returnCGRectMake(x, y, width, height);

}

- (void)start

{

[session startRunning];

}

- (void)stop

{

[session stopRunning];

}

#pragma mark - 扫描结果

- (void)captureOutput:(AVCaptureOutput*)captureOutput didOutputMetadataObjects:(NSArray*)metadataObjects fromConnection:(AVCaptureConnection*)connection

{

if(metadataObjects && metadataObjects.count>0) {

AVMetadataMachineReadableCodeObject* metadataObject = [metadataObjectsobjectAtIndex:0];

//输出扫描字符串

if(_delegate&& [_delegaterespondsToSelector:@selector(readerScanResult:)]) {

[_delegatereaderScanResult:metadataObject.stringValue];

}

NSLog(@"码流格式:%@\n码流内容:%@",metadataObject.type,metadataObject.stringValue);

[session stopRunning];//停止扫描

//播放扫描二维码的声音

SystemSoundID soundID;

NSString *strSoundFile = [[NSBundle mainBundle] pathForResource:@"noticeMusic" ofType:@"wav"];

AudioServicesCreateSystemSoundID((__bridge CFURLRef)[NSURL fileURLWithPath:strSoundFile],&soundID);

AudioServicesPlaySystemSound(soundID);

}

识别图片:

@property (strong, nonatomic) CIDetector *detector;

self.detector = [CIDetector detectorOfType:CIDetectorTypeQRCode context:nil options:@{ CIDetectorAccuracy : CIDetectorAccuracyHigh }];

- (void)imagePickerController:(UIImagePickerController*)picker didFinishPickingMediaWithInfo:(NSDictionary*)info

{

UIImage *image = [info objectForKey:UIImagePickerControllerEditedImage];

if(!image){

image = [infoobjectForKey:UIImagePickerControllerOriginalImage];

}

readview.is_Anmotion = YES;

NSArray*features = [self.detectorfeaturesInImage:[CIImageimageWithCGImage:image.CGImage]];

if(features.count>=1) {

[pickerdismissViewControllerAnimated:YES completion:^{

[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleLightContent animated:YES];

CIQRCodeFeature*feature = [featuresobjectAtIndex:0];

NSString*scannedResult = feature.messageString;

//播放扫描二维码的声音

SystemSoundIDsoundID;

NSString*strSoundFile = [[NSBundlemainBundle]pathForResource:@"noticeMusic"ofType:@"wav"];

AudioServicesCreateSystemSoundID((__bridge CFURLRef)[NSURL fileURLWithPath:strSoundFile],&soundID);

AudioServicesPlaySystemSound(soundID);

[selfaccordingQcode:scannedResult];

}];

}

else{

UIAlertView * alertView = [[UIAlertView alloc]initWithTitle:@"提示" message:@"目前仅支持发票二维码扫描" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];

alertView.tag=1022;

[alertViewshow];

[pickerdismissViewControllerAnimated:YES completion:^{

[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleLightContent animated:YES];

readview.is_Anmotion = NO;

[readviewstart];

}];

}

最后编辑于：2018.07.26 11:35:34

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iOS原生二维码\条形码扫描与生成

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