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mPaaS扫一扫-2021-01-20-周三

2021-01-21  本文已影响0人  勇往直前888

简介

扫一扫使用场景越来越广,逐渐成为一个强需求。可以通过原生API来写,感觉稍微有点麻烦。现在mPaaS也提供了扫一扫组件,使用起来就比较方便了。
这里是简介
主要意思就是组件功能强大,识别率高;二维码一维码通吃,适用范围广;

接入

  1. 在 Podfile 文件中,使用 mPaaS_pod "mPaaS_ScanCode" 添加扫码组件依赖。

  2. 执行 pod install 即可完成接入。

image.png

更新后,在Pods目录下可以看到头文件:

image.png

接口简介

@protocol TBScanViewControllerDelegate <NSObject>
@required

/**
 ⚠️相机识别在分线程返回,相册识别在主线程返回。
 @param resultArray 识别出来的码值,可能多码。
 */
- (void)didFind:(NSArray<TBScanResult*>*)resultArray;

// 其他可选的
@end

扫描结果定义:

typedef enum : NSUInteger {
    APPROACH_CAMERA = 0,//通过摄像头取帧识别
    APPROACH_LOCALPHOTO = 1,//通过扫描本地图库识别
} TBScanApproachOfAchieving;

@interface TBScanResult : NSObject

@property (nonatomic, strong) NSString *resultType; // 码类型
@property (nonatomic, assign) int subType; // 码子类型,一般情况下忽略
@property (nonatomic, strong) NSString* data; // 码包含的信息
@property (nonatomic, strong) NSString* hiddenData; // 隐藏码的隐藏信息
@property (nonatomic, assign) CGRect    rect;//码在预览帧里的位置

@property (nonatomic, assign) TBScanApproachOfAchieving approach; // 识别的途径

@property (nonatomic, strong) NSMutableDictionary *extData; // 额外信息

- (instancetype)initWithTBDecodeResult:(TBDecodeResult *)decodeResult;

@end

使用方式1:组合方式

把扫描VC当做一个属性,展示扫描界面,实现代理方法,获取扫描结果。
这种是最简洁的使用方式,推荐

  1. 唤起扫码界面。
 @interface MPScanDemoVC()<TBScanViewControllerDelegate>
 @property(nonatomic, strong) TBScanViewController *scanVC;
 @end
 - (void)startDefauleScanViewController
 {
     TBScanViewController *vc = [[TBScanViewController alloc] init];
     vc.scanType = ScanType_All_Code;
     vc.delegate = self;
     [self.navigationController pushViewController:vc animated:YES];
     self.scanVC = vc;
 }
  1. 通过代理方法,处理扫描结果。
 -(void)didFind:(NSArray<TBScanResult*>*)resultArray
 {
     if([resultArray count] > 0) {
         TBScanResult *result = resultArray.firstObject;
         NSString* content = result.data;
         dispatch_async(dispatch_get_main_queue(), ^{
             // 注意:扫码的结果是在子线程,如有UI相关操作,请切换到主线程
             UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"" message:content delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
             [alert show];
         });
     }
 }

官网使用简介

使用方式2:继承方式

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。

  1. 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];
  }
  1. 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];
      });
  }

官网的例子

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