扫描条形码获取商品信息(iOS 开发)

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一。导入ZBarSDK及其依赖库(这不是本文侧重点)

    1、下载地址 https://github.com/bmorton/ZBarSDK
    2、导入头文件 #import "ZBarSDK.h" 实现委托事件 <ZBarReaderDelegate>

二。具体方法

1.viewController.m文件

#import "ViewController.h"

#import "ZBarSDK.h"

#import "AFNetworking.h"

#import "ZbarOverlayView.h"

 

@interface ViewController ()<ZBarReaderDelegate>

{

    ZBarReaderView * reader;

    ZbarOverlayView *_overLayView;

}

 

@property (weak, nonatomic) IBOutlet UIImageView *imageView;

@property (weak, nonatomic) IBOutlet UILabel *goods_name;

@property (weak, nonatomic) IBOutlet UILabel *goods_code;

@property (weak, nonatomic) IBOutlet UILabel *manuName;

 

@end

 

@implementation ViewController

- (IBAction)didBt:(UIButton *)sender {

 

    reader.hidden = NO;

}

//扫描成功回调方法

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info

{

    id results = [info objectForKey:ZBarReaderControllerResults];

    ZBarSymbol * symbol;

    

    for(symbol in results)

        break;

    _imageView.image = [info objectForKey:UIImagePickerControllerOriginalImage];

    [picker dismissViewControllerAnimated:YES completion:nil];

    NSLog(@"%@  %u----%@----%d",symbol.data,symbol.type,symbol.typeName,symbol.count);

    

    //扫描结果得到产品编号

    [self httpCode:symbol.data];

    

}

 

//运用AFNetworking post请求 得到产品信息(关于AFNetworking网上很多例子)

-(void)httpCode:(NSString *)code{

    //方法一

    /*中国商品信息服务平台

     http://search.anccnet.com/searchResult2.aspx

     */

    

    /*

     //方法一:中国商品信息服务平台

     http://search.anccnet.com/searchResult2.aspx

     

     //方法二:第三方接口

    http://www.mxnzp.com/api/barcode/goods/details

     

     本例子采用方法二

     */

    

    //请求路径

    NSString * URLString = @"http://www.mxnzp.com/api/barcode/goods/detail?";

    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

    //设置返回类型

    manager.responseSerializer = [AFHTTPResponseSerializer serializer];

    manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"application/json", nil];

    // 请求参数设置

    NSDictionary *dict = @{

                           @"barcode":code,

                           };

    

    //2、发送请求

    [manager POST:URLString parameters:dict progress:^(NSProgress * _Nonnull downloadProgress) {

        

    } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {

        NSDictionary* json = [NSJSONSerialization

                              JSONObjectWithData:responseObject

                              options:kNilOptions

                              error:nil];

        NSLog(@"----------%@----%@",responseObject,json);

        if ([[json objectForKey:@"error_code"] integerValue] == 0) {

            self.goods_name.text = [json objectForKey:@"data"][@"goodsName"];

            self.goods_code.text = [json objectForKey:@"data"][@"code"];

            self.manuName.text = [json objectForKey:@"data"][@"manuName"];

            reader.hidden = YES;

        }

        

    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {

         NSLog(@"%@",error);

    }];

    

 

}

- (void)viewDidLoad {

    [super viewDidLoad];

    // Do any additional setup after loading the view, typically from a nib.

     [self init_camera];

}

 

- (void) init_camera

{

    reader = [ZBarReaderView new];

    ZBarImageScanner * scanner = [ZBarImageScanner new];

    [scanner setSymbology:ZBAR_PARTIAL config:0 to:0];

    [reader initWithImageScanner:scanner];

   

    reader.readerDelegate = self;

    

    const float h = [UIScreen mainScreen].bounds.size.height;

    const float w = [UIScreen mainScreen].bounds.size.width;

    const float h_padding = 0.20*w;

    const float v_padding = 60;

    CGRect reader_rect = CGRectMake(h_padding, v_padding,

                                    w * 0.6, w * 0.6);//视图中的一小块,实际使用中最好传居中的区域

    CGRect reader_rect1 = CGRectMake(0, 0, w, h);//全屏模式

    reader.frame = reader_rect1;

    reader.backgroundColor = [UIColor redColor];

    [reader start];

    

    

    [self.view addSubview: reader];

   

    

    _overLayView = [[ZbarOverlayView alloc]initWithFrame:reader.frame];//添加覆盖视图

    //    [_overLayView startAnimation];

    _overLayView.transparentArea = reader_rect;//设置中间可选框大小

    [reader addSubview:_overLayView];

    reader.scanCrop = [self getScanCrop:reader_rect readerViewBounds:reader_rect1];;// CGRectMake(100 / h,0.5, 1/3.0,0.4);

}

-(CGRect)getScanCrop:(CGRect)rect readerViewBounds:(CGRect)readerViewBounds

{

    CGFloat fullWidth = readerViewBounds.size.width;

    CGFloat fullHeight = readerViewBounds.size.height;

    CGFloat x,y,width,height;

    x = rect.origin.x;

    y = rect.origin.y;

    width = rect.size.width;

    height = rect.size.height;

    if (x + width > fullWidth) {

        if (width > fullWidth) {

            width = fullWidth;

        }else{

            x = 0;

        }

    }

    if (y + height > fullHeight) {

        if (height > fullHeight) {

            height = fullHeight;

        }else{

            y = 0;

        }

    }

    CGFloat x1,y1,width1,height1;

    x1 = (fullWidth - width - x) / fullWidth;

    y1 = y / fullHeight;

    width1 = width / fullWidth;

    height1 = rect.size.height / readerViewBounds.size.height;

    

    NSLog(@"frame:%@",NSStringFromCGRect(CGRectMake(y1, x1,height1, width1)));

    return CGRectMake(y1, x1,height1, width1);

}

 

- (void) readerView:(ZBarReaderView *)readerView didReadSymbols: (ZBarSymbolSet *)symbols fromImage:(UIImage *)image

{

    ZBarSymbol * s = nil;

    for (s in symbols)

    {

        NSLog(@"----%@",s.data);

        self.goods_code.text = s.data;

        _imageView.image = image;

        //扫描结果得到产品编号

        [self httpCode:s.data];

        break;

    }

}

 

- (void)viewDidDisappear:(BOOL)animated

{

    [super viewDidDisappear:animated];

    [_overLayView stopAnimation];

}

 

 

三。实现效果

四。如有问题可以联系。

1.邮箱:liuzhuan155@163.com

2.QQ:282020508

 

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