#import "QRCodeScanManager.h"#import #import "QRLightManager.h"#import "QRCodeScanView.h"#import "QRCodeHelper.h"

/** 打開手電筒 */+ (void)openFlashLight;/** 關閉手電筒 */+ (void)closeFlashLight;

#pragma mark 打開手電筒+ (void)openFlashLight { AVCaptureDevice *captureDevice = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo]; NSError *error = nil; if ([captureDevice hasTorch]) {  BOOL locked = [captureDevice lockForConfiguration:&error];  if (locked) {   captureDevice.torchMode = AVCaptureTorchModeOn;   [captureDevice unlockForConfiguration];  } }}#pragma mark 關閉手電筒+ (void)closeFlashLight { AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo]; if ([device hasTorch]) {  [device lockForConfiguration:nil];  [device setTorchMode:AVCaptureTorchModeOff];  [device unlockForConfiguration]; }}

typedef enum : NSUInteger { CornerLoactionDefault,//默認與邊框同中心點 CornerLoactionInside,//在邊框線內部 CornerLoactionOutside,//在邊框線外部} CornerLoaction;

@property (nonatomic, strong) UIColor *borderColor;/** 邊框顏色*/@property (nonatomic, assign) CornerLoaction cornerLocation;/** 邊角位置 默認default*/@property (nonatomic, strong) UIColor *cornerColor;/** 邊角顏色 默認正保藍#32d2dc*/@property (nonatomic, assign) CGFloat cornerWidth;/** 邊角寬度 默認2.f*/@property (nonatomic, assign) CGFloat backgroundAlpha;/** 掃描區周邊顏色的alpha 默認0.5*/@property (nonatomic, assign) CGFloat timeInterval;/** 掃描間隔 默認0.02*/@property (nonatomic, strong) UIButton *lightBtn;/** 閃光燈*/

/** 添加定時器 */- (void)addTimer;/** 移除定時器 */- (void)removeTimer;/** 根據燈光判斷 */- (void)lightBtnChangeWithBrightnessValue:(CGFloat)brightnessValue;

- (void)initilize { self.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.5]; self.borderColor = [UIColor whiteColor]; _cornerLocation = CornerLoactionDefault; _cornerColor = [UIColor colorWithRed:50/255.0f green:210/255.0f blue:220/255.0f alpha:1.0]; _cornerWidth = 2.0; self.timeInterval = 0.02; _backgroundAlpha = 0.5;   [self addSubview:self.lightBtn];}

//空白區域設置 [[[UIColor blackColor] colorWithAlphaComponent:self.backgroundAlpha] setFill]; UIRectFill(rect); //獲取上下文，并設置混合模式 -> kCGBlendModeDestinationOut CGContextRef context = UIGraphicsGetCurrentContext(); CGContextSetBlendMode(context, kCGBlendModeDestinationOut); //設置空白區 UIBezierPath *bezierPath = [UIBezierPath bezierPathWithRect:CGRectMake(borderX + 0.5 * borderLineW, borderY+ 0.5 * borderLineW, borderW - borderLineW, borderH - borderLineW)]; [bezierPath fill]; //執行混合模式 CGContextSetBlendMode(context, kCGBlendModeNormal);   //邊框設置 UIBezierPath *borderPath = [UIBezierPath bezierPathWithRect:CGRectMake(borderX, borderY, borderW, borderH)]; borderPath.lineCapStyle = kCGLineCapButt; borderPath.lineWidth = borderLineW; [self.borderColor set]; [borderPath stroke];   CGFloat cornerLength = 20; //左上角小圖標 UIBezierPath *leftTopPath = [UIBezierPath bezierPath]; leftTopPath.lineWidth = self.cornerWidth; [self.cornerColor set];   CGFloat insideExcess = fabs(0.5 * (self.cornerWidth - borderLineW)); CGFloat outsideExcess = 0.5 * (borderLineW + self.cornerWidth); if (self.cornerLocation == CornerLoactionInside) {  [leftTopPath moveToPoint:CGPointMake(borderX + insideExcess, borderY + cornerLength + insideExcess)];  [leftTopPath addLineToPoint:CGPointMake(borderX + insideExcess, borderY + insideExcess)];  [leftTopPath addLineToPoint:CGPointMake(borderX + cornerLength + insideExcess, borderY + insideExcess)]; } else if (self.cornerLocation == CornerLoactionOutside) {  [leftTopPath moveToPoint:CGPointMake(borderX - outsideExcess, borderY + cornerLength - outsideExcess)];  [leftTopPath addLineToPoint:CGPointMake(borderX - outsideExcess, borderY - outsideExcess)];  [leftTopPath addLineToPoint:CGPointMake(borderX + cornerLength - outsideExcess, borderY - outsideExcess)]; } else {  [leftTopPath moveToPoint:CGPointMake(borderX, borderY + cornerLength)];  [leftTopPath addLineToPoint:CGPointMake(borderX, borderY)];  [leftTopPath addLineToPoint:CGPointMake(borderX + cornerLength, borderY)]; } [leftTopPath stroke];

- (void)addTimer { [self addSubview:self.scanningLine]; self.timer = [NSTimer timerWithTimeInterval:self.timeInterval target:self selector:@selector(beginAnimaiton) userInfo:nil repeats:YES]; [[NSRunLoop mainRunLoop] addTimer:_timer forMode:NSRunLoopCommonModes];}#pragma mark 動畫- (void)beginAnimaiton { static BOOL isOrignPostion = YES;   if (isOrignPostion) {  _scanningLine.y = 0;  isOrignPostion = NO;  [UIView animateWithDuration:self.timeInterval animations:^{   self->_scanningLine.y += 2;  } completion:nil]; } else {  if (_scanningLine.frame.origin.y >= 0) {   CGFloat scanContent_MaxY = self.frame.size.width;   if (_scanningLine.y >= scanContent_MaxY - 10) {    _scanningLine.y = 0;    isOrignPostion = YES;   } else {    [UIView animateWithDuration:0.02 animations:^{     self->_scanningLine.y += 2;          } completion:nil];   }  } else {   isOrignPostion = !isOrignPostion;  } }}

- (void)lightBtnClick:(UIButton *)btn { btn.selected = !btn.selected; if (btn.selected) {  [QRLightManager openFlashLight]; } else {  [QRLightManager closeFlashLight]; }}

//設置二維碼讀取率 數據類型 當前控制器- (void)setupSessionPreset:(NSString *)sessionPreset metadataObjectTypes:(NSArray *)metadataObjectTypes currentController:(UIViewController *)currentController { if (sessionPreset == nil || metadataObjectTypes == nil || currentController == nil) {  NSException *excp = [NSException exceptionWithName:@"excp" reason:@"setupSessionPreset:metadataObjectTypes:currentController: 方法中的 sessionPreset 參數不能為空" userInfo:nil];  [excp raise]; }   //1、獲取攝像設備 AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];   //2、創建設備輸入流 AVCaptureDeviceInput *deviceInput = [AVCaptureDeviceInput deviceInputWithDevice:device error:nil];   //3、創建數據輸出流 AVCaptureMetadataOutput *metadataOutput = [[AVCaptureMetadataOutput alloc] init]; [metadataOutput setMetadataObjectsDelegate:self queue:dispatch_get_main_queue()];   //3(1)、創建設備輸出流 self.videoDataOutput = [[AVCaptureVideoDataOutput alloc] init]; [_videoDataOutput setSampleBufferDelegate:self queue:dispatch_get_main_queue()];   // 設置掃描范圍（每一個取值0～1，以屏幕右上角為坐標原點） // 注：微信二維碼的掃描范圍是整個屏幕，這里并沒有做處理（可不用設置）; 如需限制掃描范圍，打開下一句注釋代碼并進行相應調試 // metadataOutput.rectOfInterest = CGRectMake(0.05, 0.2, 0.7, 0.6);   //4、創建會話對象 _session = [[AVCaptureSession alloc] init]; //會話采集率：AVCaptureSessionPresetHigh _session.sessionPreset = sessionPreset;   //5、添加設備輸出流到會話對象 [_session addOutput:metadataOutput]; //5(1)添加設備輸出流到會話對象；與3(1)構成識別光纖強弱 [_session addOutput:_videoDataOutput];   //6、添加設備輸入流到會話對象 [_session addInput:deviceInput];   //7、設置數據輸出類型，需要將數據輸出添加到會話后，才能指定元數據類型，否則會報錯 // 設置掃碼支持的編碼格式(如下設置條形碼和二維碼兼容) // @[AVMetadataObjectTypeQRCode, AVMetadataObjectTypeEAN13Code, AVMetadataObjectTypeEAN8Code, AVMetadataObjectTypeCode128Code] metadataOutput.metadataObjectTypes = metadataObjectTypes;   //8、實例化預覽圖層，傳遞_session是為了告訴圖層將來顯示什么內容 _videoPreviewLayer = [AVCaptureVideoPreviewLayer layerWithSession:_session]; //保持縱橫比；填充層邊界 _videoPreviewLayer.videoGravity = AVLayerVideoGravityResizeAspectFill; CGFloat x = 0; CGFloat y = 0; CGFloat w = [UIScreen mainScreen].bounds.size.width; CGFloat h = [UIScreen mainScreen].bounds.size.height; _videoPreviewLayer.frame = CGRectMake(x, y, w, h); [currentController.view.layer insertSublayer:_videoPreviewLayer atIndex:0];   //9、啟動會話 [_session startRunning];  }

typedef void(^GetBrightnessBlock)(CGFloat brightness);//用來向外部傳遞捕獲到的亮度值以便于識別何時開啟閃光燈，typedef void(^ScanBlock)(NSArray *metadataObjects);//捕獲到的結果集合//亮度回調- (void)brightnessChange:(GetBrightnessBlock)getBrightnessBlock;//掃描結果- (void)scanResult:(ScanBlock)scanBlock;

- (void)startRunning { [_session startRunning];}- (void)stopRunning { [_session stopRunning];}

需要遵循：/** 重置根據光線強弱值打開手電筒 delegate方法 */- (void)resetSampleBufferDelegate;/** 取消根據光線強弱值打開手電筒的delegate方法 */- (void)cancelSampleBufferDelegate;- (void)resetSampleBufferDelegate { [_videoDataOutput setSampleBufferDelegate:self queue:dispatch_get_main_queue()];}- (void)cancelSampleBufferDelegate { [_videoDataOutput setSampleBufferDelegate:nil queue:dispatch_get_main_queue()];}

#pragma mark 播放掃描提示音- (void)playSoundName:(NSString *)name { NSString *audioFile = [[NSBundle mainBundle] pathForResource:name ofType:nil]; NSURL *fileUrl = [NSURL fileURLWithPath:audioFile]; SystemSoundID soundID = 0; AudioServicesCreateSystemSoundID((__bridge CFURLRef)(fileUrl), &soundID); AudioServicesAddSystemSoundCompletion(soundID, NULL, NULL, soundCompleteCallback, NULL); AudioServicesPlaySystemSound(soundID); // 播放音效}void soundCompleteCallback(SystemSoundID soundID, void *clientData){  }

- (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; [self.scanView addTimer]; [_scanManager startRunning]; [_scanManager resetSampleBufferDelegate];}- (void)viewWillDisappear:(BOOL)animated { [super viewWillDisappear:animated]; [self.scanView removeTimer]; [_scanManager stopRunning]; [_scanManager cancelSampleBufferDelegate];}

- (void)setupScanManager { self.scanManager = [QRCodeScanManager sharedManager];   NSArray *arr = @[AVMetadataObjectTypeQRCode, AVMetadataObjectTypeEAN13Code, AVMetadataObjectTypeEAN8Code, AVMetadataObjectTypeCode128Code]; [_scanManager setupSessionPreset:AVCaptureSessionPreset1920x1080 metadataObjectTypes:arr currentController:self];   __weak __typeof(self)weakSelf = self; //光掃描結果回調 [_scanManager scanResult:^(NSArray *metadataObjects) {  if (metadataObjects != nil && metadataObjects.count > 0) {   [weakSelf.scanManager playSoundName:@"sound.caf"];   //obj 為掃描結果   AVMetadataMachineReadableCodeObject *obj = metadataObjects[0];   NSString *url = [obj stringValue];   NSLog(@"---url = :%@", url);  } else {   NSLog(@"暫未識別出掃描的二維碼");  } }];   //光纖變化回調 [_scanManager brightnessChange:^(CGFloat brightness) {  [weakSelf.scanView lightBtnChangeWithBrightnessValue:brightness]; }];  }

//借助第三方相冊- (void)albumBtnClick { TZImagePickerController *pickerController = [[TZImagePickerController alloc] initWithMaxImagesCount:1 delegate:self];   __weak __typeof(self)weakSelf = self;   [pickerController setDidFinishPickingPhotosHandle:^(NSArray *photos, NSArray *assets, BOOL isSelectOriginalPhoto) {  UIImage *image = photos[0];  // CIDetector(CIDetector可用于人臉識別)進行圖片解析，從而使我們可以便捷的從相冊中獲取到二維碼  // 聲明一個 CIDetector，并設定識別類型 CIDetectorTypeQRCode  // 識別精度  CIDetector *detector = [CIDetector detectorOfType:CIDetectorTypeQRCode context:nil options:@{CIDetectorAccuracy:CIDetectorAccuracyHigh}];     //取得識別結果  NSArray *features = [detector featuresInImage:[CIImage imageWithCGImage:image.CGImage]];     NSString *resultStr;  if (features.count == 0) {   NSLog(@"暫未識別出二維碼");  } else {   for (int index = 0; index < [features count]; index++) {    CIQRCodeFeature *feature = [features objectAtIndex:index];    resultStr = feature.messageString;   }   NSLog(@"---url:%@", resultStr);  } }]; [self presentViewController:pickerController animated:YES completion:nil];}