导入ZBarSDK文件并引入一下框架
AVFoundation.framework
CoreMedia.framework
CoreVideo.framework
QuartzCore.framework
libiconv.dylib
引入头文件#import “ZBarSDK.h”即可使用
当找到条形码时，会执行代理方法
废话不多说,直接上代码
//
// LQXZBarViewController.m
// erweim
//
// Created by 刘祺旭 on 15/9/9.
// Copyright (c) 2015年 刘祺旭. All rights reserved.
//

@interface LQXZBarViewController ()
{
BOOL is_Anmotion;
ZBarReaderViewlqxreadview;
UIImageViewlqxscanZomeBack;
UIImageView*lqxreadLineView;
}
@end

@implementation LQXZBarViewController

• (void)viewDidLoad {
  [super viewDidLoad];
  [self InitScan];
  [self loopDrawLine];
  }

pragma mark 初始化扫描

• (void)InitScan
  {
  lqxreadview = [ZBarReaderView new];
  lqxreadview.backgroundColor = [UIColor clearColor];
  lqxreadview.frame = CGRectMake(187.5 - 150, 333.5 - 150, 300, 300);
  lqxreadview.readerDelegate = self;
  lqxreadview.allowsPinchZoom = YES;//使用手势变焦
  lqxreadview.trackingColor = [UIColor redColor];
  lqxreadview.showsFPS = NO;// 显示帧率 YES 显示 NO 不显示
  lqxreadview.scanCrop = CGRectMake(50, 50, 50, 50);//将被扫描的图像的区域

  UIImage *hbImage=[UIImage imageNamed:@"框.png"];
  lqxscanZomeBack=[[UIImageView alloc] initWithImage:hbImage];
  //添加一个背景图片
  CGRect mImagerect=CGRectMake((lqxreadview.frame.size.width-200)/2.0, (lqxreadview.frame.size.height-200)/2.0, 200, 200);
  [lqxscanZomeBack setFrame:mImagerect];
  lqxreadview.scanCrop = [self getScanCrop:mImagerect readerViewBounds:lqxreadview.bounds];//将被扫描的图像的区域

  [lqxreadview addSubview:lqxscanZomeBack];
  [lqxreadview addSubview:lqxreadLineView];
  [self.view addSubview:lqxreadview];
  [lqxreadview start];

}

pragma mark 获取扫描区域

-(CGRect)getScanCrop:(CGRect)rect readerViewBounds:(CGRect)readerViewBounds
{
CGFloat x,y,width,height;

x = rect.origin.x / readerViewBounds.size.width;
y = rect.origin.y / readerViewBounds.size.height;
width = rect.size.width / readerViewBounds.size.width;
height = rect.size.height / readerViewBounds.size.height;

return CGRectMake(x, y, width, height);

}

pragma mark 扫描动画

-(void)loopDrawLine
{

CGRect  rect = CGRectMake(lqxscanZomeBack.frame.origin.x, lqxscanZomeBack.frame.origin.y, lqxscanZomeBack.frame.size.width, 2);
if (lqxreadLineView) {
    [lqxreadLineView removeFromSuperview];
}
lqxreadLineView = [[UIImageView alloc] initWithFrame:rect];
lqxreadLineView.backgroundColor = [UIColor redColor];
[lqxreadLineView setImage:[UIImage imageNamed:@"线.jpg"]];
[UIView animateWithDuration:3.0
                      delay: 0.0
                    options: UIViewAnimationOptionCurveEaseIn
                 animations:^{
                     //修改fream的代码写在这里
                     lqxreadLineView.frame =CGRectMake(lqxscanZomeBack.frame.origin.x, lqxscanZomeBack.frame.origin.y+lqxscanZomeBack.frame.size.height, lqxscanZomeBack.frame.size.width, 2);
                     [lqxreadLineView setAnimationRepeatCount:0];
                     
                 }
                 completion:^(BOOL finished){
                     if (!is_Anmotion) {
                     
                         [self loopDrawLine];
                     }
                     
                 }];

[lqxreadview addSubview:lqxreadLineView];

}

pragma mark 获取扫描结果

• (void)readerView:(ZBarReaderView *)readerView didReadSymbols:(ZBarSymbolSet *)symbols fromImage:(UIImage *)image
  {
  // 得到扫描的条码内容
  const zbar_symbol_t *symbol = zbar_symbol_set_first_symbol(symbols.zbarSymbolSet);
  NSString *symbolStr = [NSString stringWithUTF8String: zbar_symbol_get_data(symbol)];
  if (zbar_symbol_get_type(symbol) == ZBAR_QRCODE) {

    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:symbolStr]];
  

  }

  for (ZBarSymbol *symbol in symbols) {
  break;
  }

  [readerView stop];
  is_Anmotion = YES;
  [readerView removeFromSuperview];

}

• (void)didReceiveMemoryWarning {
  [super didReceiveMemoryWarning];
  // Dispose of any resources that can be recreated.
  }

/*

pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation

• (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
  // Get the new view controller using [segue destinationViewController].
  // Pass the selected object to the new view controller.
  }
  */

@end