前言

掃一掃還是借助原生煤墙，原生掃描很強(qiáng)勢，封裝掃描工具類馍刮，閃光燈信夫，掃描View,借助第三方照片選擇器TZImagePickerController實現(xiàn)相冊選中識別二維碼。

代碼

掃一掃使用方法：

1卡啰、配置

   self.scanManager = [LXQRCodeScanManager sharedManager];
    NSArray *arr = @[AVMetadataObjectTypeQRCode, AVMetadataObjectTypeEAN13Code, AVMetadataObjectTypeEAN8Code, AVMetadataObjectTypeCode128Code];
    // AVCaptureSessionPreset1920x1080 推薦使用静稻，對于小型的二維碼讀取率較高
    [_scanManager setupSessionPreset:AVCaptureSessionPreset1920x1080 metadataObjectTypes:arr currentController:self];`

2、處理掃描結(jié)果回調(diào) 以及 光線對閃光燈的控制

  //掃描結(jié)果回調(diào)
    [_scanManager scanResult:^(NSArray *metadataObjects) {
//        NSLog(@"metadataObjects - - %@", metadataObjects);
        
        if (metadataObjects != nil && metadataObjects.count > 0) {
             [weakSelf.scanManager palySoundName:@"sound.caf"];
             AVMetadataMachineReadableCodeObject *obj = metadataObjects[0];
            NSString *url =[obj stringValue];
           
            LXQRResultController *Vc =[[LXQRResultController alloc]init];
            Vc.navTitle = @"掃描結(jié)果";
            if ([url hasPrefix:@"http"]) {
                Vc.url = url;
            }
            [weakSelf.navigationController pushViewController:Vc animated:YES];
        
        } else {
            [NSObject showMessag:@"暫未識別出掃描的二維碼" toView:weakSelf.view afterDelay:1];
        }
    }];
    
    
    //光線變化回調(diào)
    [_scanManager brightnessChange:^(CGFloat brightness) {
        
        [weakSelf.scanView lightBtnChangeWithBrightnessValue:brightness];
        
    }];

相冊識別二維碼跳轉(zhuǎn)：

#pragma mark---借助第三方相冊
- (void)rightBarButtonItenAction {
    
  
    TZImagePickerController *pickerController = [[TZImagePickerController alloc]initWithMaxImagesCount:1 delegate:self];
    
    WS(weakSelf);
    
    [pickerController setDidFinishPickingPhotosHandle:^(NSArray<UIImage *> *photo, NSArray *assets, BOOL isSelectOriginalPhoto){
        
//        NSLog(@"%@",photo);
        
        UIImage *image = photo[0];
        // CIDetector(CIDetector可用于人臉識別)進(jìn)行圖片解析碎乃，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(shè)定識別類型 CIDetectorTypeQRCode
        CIDetector *detector = [CIDetector detectorOfType:CIDetectorTypeQRCode context:nil options:@{CIDetectorAccuracy: CIDetectorAccuracyHigh}];
        
        // 取得識別結(jié)果
        NSArray *features = [detector featuresInImage:[CIImage imageWithCGImage:image.CGImage]];
        
        NSString *resultStr;
        if (features.count == 0) {
            
            [NSObject showMessag:@"暫未識別出二維碼" toView:self.view afterDelay:1];
        }else{
            for (int index = 0; index < [features count]; index ++) {
                CIQRCodeFeature *feature = [features objectAtIndex:index];
                resultStr = feature.messageString;
            }
            LXQRResultController *Vc =[[LXQRResultController alloc]init];
            Vc.navTitle = @"掃描結(jié)果";
            if ([resultStr hasPrefix:@"http"]) {
                Vc.url = resultStr;
            }
            [weakSelf.navigationController pushViewController:Vc animated:YES];
      
        }
        
    }];
    [self presentViewController:pickerController animated:YES completion:nil];
    
}

最后

2018-04-09 15_13_59.gif

demo地址：LXQRCode