zbar如何使用

1.使用ZBar项目。下载地址是2.新建一个项目。3.导入 ZBar的sdk。把ZBar SDK的目录拉入项目，然后选中copy选项导入ZBarSDK文件并引入一下框架AVFoundation.framework(weak)CoreMedia.framework (weak)CoreVideo.framework (weak)QuartzCore.frameworklibiconv.dylib最后，引入头文件#import “ZBarSDK.h” 即可使用。

4.在项目文件的target中加入 以下framework5.在appDelegate文件中加入 标记部分的代码- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];// Override point for customization after application launch.self.viewController = [[[ViewController alloc] initWithNibName:@'ViewController' bundle:nil] autorelease];self.window.rootViewController = self.viewController;[self.window makeKeyAndVisible];// force view class to load so it may be referenced directly from NIB[ZBarReaderView class];return YES;}

7.在.m文件中要实现的主要方法是：- (void) readerView: (ZBarReaderView*) viewdidReadSymbols: (ZBarSymbolSet*) symsfromImage: (UIImage*) img{// do something useful with resultsfor(ZBarSymbol *sym in syms) {self.label.text = sym.data;break;}}这里是功能是读取照片信息，把条码放如label显示-(void) viewDidAppear:(BOOL)animated{// run the reader when the view is visible[readerView start];}

这个是在显示视图的时候，启动摄像头，开始扫描- (void)viewDidLoad{[super viewDidLoad];// Do any additional setup after loading the view, typically from a nib.// the delegate receives decode resultsreaderView.readerDelegate = self;// you can use this to support the simulatorif(TARGET_IPHONE_SIMULATOR) {cameraSim = [[ZBarCameraSimulator alloc]initWithViewController: self];cameraSim.readerView = readerView;}}在初始化的时候，设置托管。