1. 下載SDK https://github.com/bmorton/ZBarSDK

2. 引用到項目中

3. 添加引用

4. AppDelegate中添加下面代碼

5. 在需要使用掃描的controller中實現ZBarReaderViewDelegate

6. 對應的m文件中

#import "ViewController.h"  
  
@interface ViewController ()  
{  
    UITextField *resultText;  
    ZBarReaderView *readerView;  
    ZBarCameraSimulator 
 
*cameraSim;  
}  
@end  
  
@implementation ViewController  
  
- (void)viewDidLoad {  
    [super viewDidLoad];  
    // Do any additional setup after loading the view, typically from a nib.  
      
    resultText = [[UITextField alloc] initWithFrame:CGRectMake(20, 40, 200, 60)];  
    resultText.backgroundColor 
 
= [UIColor blueColor];  
    [self.view addSubview:resultText];  
      
    readerView = [[ZBarReaderView alloc]init];  
    readerView.frame = CGRectMake(10, 110, 300, 300);  
    readerView.readerDelegate = self;  
    //關閉閃光燈  
    readerView.torchMode = 0;  
    //處理模擬器  
    if (TARGET_IPHONE_SIMULATOR) {  
        ZBarCameraSimulator 
 
*cameraSimulator  
        = [[ZBarCameraSimulator alloc]initWithViewController:self];  
        cameraSimulator.readerView = readerView;  
    }  
    [self.view addSubview:readerView];  
  
    [readerView start];  
  
}  
  
- (void) readerView: (ZBarReaderView*) view  
     didReadSymbols: (ZBarSymbolSet*) syms  
          fromImage: (UIImage*) img  
{  
    // do something useful with results  
    for(ZBarSymbol *sym in syms) {  
        resultText.text = sym.data;  
        break;  
    }  
    [readerView stop];  
}  

IOS 使用 ZbarSDK 二維碼掃描