iOS原生二維碼\條形碼掃描與生成

重點(diǎn)

1、它是橫屏情況下的frame所以寬高和XY值需反向操作。就是按照豎屏模式應(yīng)該將原先是XYWH要改為YXHW來設(shè)置;

2.設(shè)置相機(jī)和相冊權(quán)限

NSCameraUsageDescription (相機(jī)權(quán)限訪問)

NSPhotoLibraryUsageDescription (相冊權(quán)限訪問);

3.根據(jù)二維碼或條形碼格式不一樣,設(shè)置支持的碼流樣式;

4.掃描到結(jié)果后需要停止掃描,不然會(huì)持續(xù)回到掃描結(jié)果;

代碼:

- (void)instanceDevice

{

? ? _isBarCode = YES;

? ? self.scanBoxheight = self.scanBoxWidth = 200;

? ? if (_isBarCode) {

? ? ? ? self.scanBoxheight = 60;

? ? ? ? self.scanBoxWidth = DeviceMaxWidth-20;

? ? }

//? ? //添加一個(gè)背景圖片

? ? 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];

? ? //獲取攝像設(shè)備

? ? AVCaptureDevice * device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];

? ? //創(chuàng)建輸入流

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

? ? //創(chuàng)建輸出流

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

? ? //設(shè)置代理在主線程里刷新

? ? [outputsetMetadataObjectsDelegate:self queue:dispatch_get_main_queue()];

? ? output.rectOfInterest= scanCrop;

? ? //初始化鏈接對(duì)象

? ? session = [[AVCaptureSession alloc]init];

? ? //高質(zhì)量采集率

? ? [session setSessionPreset:AVCaptureSessionPresetHigh];

? ? if(input) {

? ? ? ? [sessionaddInput:input];

? ? }

? ? if(output) {

? ? ? ? [sessionaddOutput:output];

? ? ? ? //設(shè)置掃碼支持的編碼格式(如下設(shè)置條形碼和二維碼兼容)

? ? ? ? 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];

? ? //開始捕獲

? ? [session startRunning];

}

//設(shè)置掃描線動(dòng)畫

-(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的代碼寫在這里

? ? ? ? _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 二維碼掃描框

- (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 = @"將二維碼/條碼放人框內(nèi)且蓬，即可掃描";

? ? [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:@"手動(dòng)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? 根據(jù)掃描框坐標(biāo)確定實(shí)際掃描區(qū)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 - 掃描結(jié)果

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

{

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

? ? ? ? AVMetadataMachineReadableCodeObject* metadataObject = [metadataObjectsobjectAtIndex:0];

? ? ? ? //輸出掃描字符串

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

? ? ? ? ? ? [_delegatereaderScanResult:metadataObject.stringValue];

? ? ? ? }

NSLog(@"碼流格式:%@\n碼流內(nèi)容:%@",metadataObject.type,metadataObject.stringValue);

[session stopRunning];//停止掃描

//播放掃描二維碼的聲音

? ? SystemSoundID soundID;

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

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

? ? AudioServicesPlaySystemSound(soundID);

? ? }

}

識(shí)別圖片:

@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;

? ? ? ? ? ? //播放掃描二維碼的聲音

? ? ? ? ? ? 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:@"目前僅支持發(fā)票二維碼掃描" delegate:self cancelButtonTitle:@"確定" otherButtonTitles:nil, nil];

? ? ? ? alertView.tag=1022;

? ? ? ? [alertViewshow];

? ? ? ? [pickerdismissViewControllerAnimated:YES completion:^{

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

? ? ? ? ? ? readview.is_Anmotion = NO;

? ? ? ? ? ? [readviewstart];

? ? ? ? }];

? ? }

}

最后編輯于：2018.07.26 11:35:34

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iOS原生二維碼\條形碼掃描與生成

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