进阶指南 - 移动开发平台 mPaaS

本文将结合扫一扫官方 Demo 介绍如何在 10.1.60 及以上版本的基线中使用默认 UI 下的扫码功能和自定义 UI 下的扫码功能。

默认 UI 下使用扫一扫

在默认 UI 下修改扫码所在页面的参数。

   
    ```objectivec
    - (void)custoDefaultScan {
       TBScanViewController *vc = [[MPScanCodeAdapterInterface sharedInstance] createDefaultScanPageWithallback:^(id  _Nonnull result, BOOL keepAlive) {
            UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"" message:result[@"resp_result"] delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
            alert.tag = 1001;
            [alert show];
        }];
        [self.navigationController pushViewController:vc animated:YES];
        self.scanVC =  vc;
    
        // 设置扫码界面 title
        vc.title = @"标准扫码";
    
        // 设置打开手电筒提示文字
        vc.torchStateNormalTitle = @"打开手电筒";
    
        // 设置关闭手电筒提示文字
        vc.torchStateSelectedTitle = @"关闭手电筒";
    
        // 设置扫码识别类型
        vc.scanType =  ScanType_QRCode;
    
        // 设置选择相册按钮
        vc.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithImage:APCommonUILoadImage(@"camera") style:UIBarButtonItemStylePlain target:self action:@selector(selectPhotos)];
    
    }
    
    - (void)selectPhotos
    {
        [self.scanVC scanPhotoLibrary];
    }
    ```

自定义 UI 下使用扫一扫

若您需要完全自定义扫码 UI 界面，可自定义扫码页并让其继承 TBScanViewController。

创建扫码页，并自定义扫码区。

     
        @interface MPScanCodeViewController : TBScanViewController <TBScanViewControllerDelegate>
      
        @end
      
        @implementation MPScanCodeViewController
      
        - (instancetype)init
        {
            if (self = [super init])
            {
                self.delegate = self;
                self.scanType = ScanType_All_Code;
            }
            return self;
        }
      
        - (void)viewDidLoad {
            [super viewDidLoad];
            // Do any additional setup after loading the view.
            self.title = @"扫码";
      
            // 自定义扫码界面大小
            CGRect rect = [MPScanCodeViewController constructScanAnimationRect];
            self.rectOfInterest = rect;
      
            // 自定义相册按钮
            self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"选择相册" style:UIBarButtonItemStylePlain target:self action:@selector(selectPhoto)];
        }
      
        + (CGRect)constructScanAnimationRect
        {
            CGSize screenXY = [UIScreen mainScreen].bounds.size;
            NSInteger focusFrameWH = screenXY.width / 320 * 220;//as wx
            int offet = 10;
            if (screenXY.height == 568)
                offet = 19;
      
            return CGRectMake((screenXY.width - focusFrameWH) / 2,
                              (screenXY.height - 64 - focusFrameWH - 83 - 50 - offet) / 2 + 64,
                              focusFrameWH,
                              focusFrameWH);
        }
      
        -(void)buildContainerView:(UIView*)containerView
        {
            // 自定义扫码框 view
            UIView* bg = [[UIView alloc] initWithFrame:containerView.bounds];
            [containerView addSubview:bg];
            CGRect rect = [MPScanCodeViewController constructScanAnimationRect];
            UIView* view = [[UIView alloc] initWithFrame:rect];
            view.backgroundColor = [UIColor orangeColor];
            view.alpha = 0.5;
            [bg addSubview:view];
        }
      
        - (void)selectPhoto
        {
            [self scanPhotoLibrary];
        }

处理扫码结果。

     
        -(void)didFind:(NSArray<TBScanResult*>*)resultArray
        {
            TBScanResult *result = resultArray.firstObject;
            NSString* content = result.data;
            if (result.resultType == TBScanResultTypeQRCode) {
                content = [NSString stringWithFormat:@"qrcode:%@, hiddenData:%@, TBScanQRCodeResultType:%@", result.data, result.hiddenData, [result.extData objectForKey:TBScanResultTypeQRCode]];
                NSLog(@"subType is %@, ScanType_QRCode is %@", @(result.subType), @(ScanType_QRCode));
            } else if (result.resultType == TBScanResultTypeVLGen3Code) {
                content = [NSString stringWithFormat:@"gen3:%@", result.data];
                NSLog(@"subType is %@, ScanType_GEN3 is %@", @(result.subType), @(ScanType_GEN3));
            } else if (result.resultType == TBScanResultTypeGoodsBarcode) {
                content = [NSString stringWithFormat:@"barcode:%@", result.data];
                NSLog(@"subType is %@, EAN13 is %@", @(result.subType), @(EAN13));
            } else if (result.resultType == TBScanResultTypeDataMatrixCode) {
                content = [NSString stringWithFormat:@"dm:%@", result.data];
                NSLog(@"subType is %@, ScanType_DATAMATRIX is %@", @(result.subType), @(ScanType_DATAMATRIX));
            } else if (result.resultType == TBScanResultTypeExpressCode) {
                content = [NSString stringWithFormat:@"express:%@", result.data];
                NSLog(@"subType is %@, ScanType_FASTMAIL is %@", @(result.subType), @(ScanType_FASTMAIL));
            }
            dispatch_async(dispatch_get_main_queue(), ^{
                UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"" message:content delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
                alert.tag = 9999;
                [alert show];
            });
        }

持续扫码。

     
        - (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
            // 持续扫码
            [self resumeScan];
        }

本地相册识别失败的回调。

     
        - (void)scanPhotoFailed
        {
            // 相册识别失败的回调
            NSLog(@"scanPhotoFailed");
        }

其他回调处理。

     
        - (void)cameraPermissionDenied
        {
            [self.navigationController popViewControllerAnimated:YES];
        }
      
        - (void)cameraDidStart
        {
            NSLog(@"started!!");
        }
      
        -(void)setTorchState:(TorchState)bState
        {
            NSLog(@"TorchState:%lu", (unsigned long)bState);
        }
      
        -(void)userTrack:(NSString*)name
        {
            NSLog(@"userTrack:%@", name);
        }
      
        -(void)userTrack:(NSString*)name args:(NSDictionary*)data
        {
            NSLog(@"userTrack:%@, args:%@", name, data);
        }
      
        - (void)scanPhotoFailed
        {
            // 相册识别失败的回调
            NSLog(@"scanPhotoFailed");
        }