iphone 使用ZBar 条码扫描
.1. 下载ZBarSDK 添加到工程 
2. 添加需要的framework 
3. #import "ZBarSDK.h" 添加协议 ZBarReaderDelegate 
4. 
Java代码  
1.ZBarReaderViewController *reader = [ZBarReaderViewController new];   
2.            reader.readerDelegate = self;   
3.            ZBarImageScanner *scanner = reader.scanner;   
4.            [scanner setSymbology: ZBAR_I25   
5.                           config: ZBAR_CFG_ENABLE   
6.                               to: 0];   
7.            [self presentModalViewController: reader   
8.                                    animated: YES];   
9.            [reader release];   
10.  
11.  
12.- (void) imagePickerController: (UIImagePickerController*) reader   
13. didFinishPickingMediaWithInfo: (NSDictionary*) info   
14.{   
15.    id<NSFastEnumeration> results =   
16.    [info objectForKey: ZBarReaderControllerResults];   
17.    ZBarSymbol *symbol = nil;   
18.    for(symbol in results)   
19.        break;   
20.    NSLog(@"===%@",symbol.data);   
21.       
22.    self.tfOrderNumber.text = symbol.data;   
23.       
24.    [reader dismissModalViewControllerAnimated: YES];   
25.}