IOS开发---菜鸟学习之路--（二十）-二维码扫描功能的实现

本章将讲解如何实现二维码扫描的功能

首先在github上下载ZBar SDK
地址https://github.com/bmorton/ZBarSDK

然后将如下的相关类库添加进去

AVFoundation.framwork, CoreMedia.framework, CoreVideo.framework, libiconv.dylib 和libzbar.a

接下来首先在.h文件中引用

#import "ZBarSDK.h"

同时添加代理

ZBarReaderDelegate

然后在.m文件中添加如下代码

 -(void)sysbutbuttonclick{

     ZBarReaderViewController *reader = [ZBarReaderViewController new];
     reader.readerDelegate = self;
     ZBarImageScanner *scanner = reader.scanner;

     [scanner setSymbology: ZBAR_I25
                    config: ZBAR_CFG_ENABLE
                        to: ];
     [self presentModalViewController: reader    animated: YES];
 }

 - (void) imagePickerController: (UIImagePickerController*) reader
  didFinishPickingMediaWithInfo: (NSDictionary*) info
 {

     NSLog(@"info=%@",info);
     // 得到条形码结果
     id<NSFastEnumeration> results =[info objectForKey: ZBarReaderControllerResults];
     ZBarSymbol *symbol = nil;
     for(symbol in results)
         // EXAMPLE: just grab the first barcode
         break;

     UIAlertView *alert=[[UIAlertView alloc] initWithTitle:@"信息提示!" message:symbol.data delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"确定", nil];
     [alert show];
     // 将获得到条形码显示到我们的界面上
     // resultText.text = symbol.data;
     NSLog(@"%@",symbol.data);
     // 扫描时的图片显示到我们的界面上
     //  resultImage.image =
     // [info objectForKey: UIImagePickerControllerOriginalImage];

     // 扫描界面退出
     //[reader dismissModalViewControllerAnimated: YES];
 }

然后需要触发扫描事件的时候 就调用

sysbutbuttonclick 就可以 了