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
-
在 Podfile 文件中,使用 mPaaS_pod "mPaaS_ScanCode" 添加扫码组件依赖。
-
执行 pod install 即可完成接入。
更新后,在Pods目录下可以看到头文件:
image.png接口简介
-
这是一个独立的ViewController,所以是一个独立页面
-
扫描结果通过一个代理来返回:
@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
- 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;
}
- 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];
});
}
}
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。
- 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];
}
- 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];
});
}