zoukankan html css js c++ java

使用ZBar来读取条形码和二维码的方法

1.使用ZBar项目。下载地址是： http://zbar.sourceforge.net/iphone/index.html

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

4.在项目文件的target中加入以下framework

5.在appDelegate文件中加入标记部分的代码

[cpp] view plain copy

- (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;
}

注意此代码：

[cpp] view plain copy

// force view class to load so it may be referenced directly from NIB
[ZBarReaderView class];

6.在.h文件中加入 ZBarReaderViewDelegate的实现，代码如下:

[cpp] view plain copy

//
// ViewController.h
// FootSafety
//
// Created by 泽宇徐 on 12-6-12.
// Copyright (c) 2012年 __MyCompanyName__. All rights reserved.
//
#import <UIKit/UIKit.h>
#import "ZBarSDK.h"
@interface ViewController : UIViewController<ZBarReaderViewDelegate>
{
IBOutlet UILabel * label ;
ZBarReaderView *readerView;
ZBarCameraSimulator *cameraSim;
}
@property(nonatomic,retain) UILabel * label ;
@property (nonatomic, retain) IBOutlet ZBarReaderView *readerView;
@end

7.在.m文件中要实现的主要方法是：

[html] view plain copy

- (void) readerView: (ZBarReaderView*) view
didReadSymbols: (ZBarSymbolSet*) syms
fromImage: (UIImage*) img
{
// do something useful with results
for(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

[html] view plain copy

-(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

[html] view plain copy

- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
// the delegate receives decode results
readerView.readerDelegate = self;
// you can use this to support the simulator
if(TARGET_IPHONE_SIMULATOR) {
cameraSim = [[ZBarCameraSimulator alloc]
initWithViewController: self];
cameraSim.readerView = readerView;
}
}

在初始化的时候，设置托管。

.m文件所有内容是：

[html] view plain copy

//
// ViewController.m
// FootSafety
//
// Created by 泽宇徐 on 12-6-12.
//
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
@synthesize label;
@synthesize readerView;
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
// the delegate receives decode results
readerView.readerDelegate = self;
// you can use this to support the simulator
if(TARGET_IPHONE_SIMULATOR) {
cameraSim = [[ZBarCameraSimulator alloc]
initWithViewController: self];
cameraSim.readerView = readerView;
}
}
-(void) viewDidAppear:(BOOL)animated
{
// run the reader when the view is visible
[readerView start];
}
- (void) readerView: (ZBarReaderView*) view
didReadSymbols: (ZBarSymbolSet*) syms
fromImage: (UIImage*) img
{
// do something useful with results
for(ZBarSymbol *sym in syms) {
self.label.text = sym.data;
break;
}
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
-(void) dealloc
{
[self.readerView release];
[self.label release];
[super dealloc];
}
@end

在ViewController.xib文件中增加一个view，并且修改view的类是ZBarReaderView ，并且指向 .h文件中定义的

[cpp] view plain copy

ZBarReaderView *readerView;

版权声明：本文为博主原创文章，未经博主允许不得转载。

1.使用ZBar项目。下载地址是： http://zbar.sourceforge.net/iphone/index.html


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

4.在项目文件的target中加入 以下framework


5.在appDelegate文件中加入 标记部分的代码
[cpp] view plain copy
- (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;  
}  
注意此代码：

[cpp] view plain copy
// force view class to load so it may be referenced directly from NIB  
 [ZBarReaderView class];  

6.在.h文件中加入   ZBarReaderViewDelegate的实现，代码如下:
[cpp] view plain copy
//  
//  ViewController.h  
//  FootSafety  
//  
//  Created by 泽宇 徐 on 12-6-12.  
//  Copyright (c) 2012年 __MyCompanyName__. All rights reserved.  
//  
  
#import <UIKit/UIKit.h>  
#import "ZBarSDK.h"  
  
@interface ViewController : UIViewController<ZBarReaderViewDelegate>  
{  
    IBOutlet UILabel  * label ;  
    ZBarReaderView *readerView;  
    ZBarCameraSimulator *cameraSim;  
}  
  
@property(nonatomic,retain) UILabel * label ;  
@property (nonatomic, retain) IBOutlet ZBarReaderView *readerView;  
  
  
@end  

7.在.m文件中要实现的主要方法是：

[html] view plain copy
- (void) readerView: (ZBarReaderView*) view  
     didReadSymbols: (ZBarSymbolSet*) syms  
          fromImage: (UIImage*) img  
{  
    // do something useful with results  
    for(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

[html] view plain copy
-(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

[html] view plain copy
- (void)viewDidLoad  
{  
    [super viewDidLoad];  
    // Do any additional setup after loading the view, typically from a nib.  
      
    // the delegate receives decode results  
    readerView.readerDelegate = self;  
      
    // you can use this to support the simulator  
    if(TARGET_IPHONE_SIMULATOR) {  
        cameraSim = [[ZBarCameraSimulator alloc]  
                     initWithViewController: self];  
        cameraSim.readerView = readerView;  
    }  
  
}  

在初始化的时候，设置托管。

.m文件所有内容是：
[html] view plain copy
//  
//  ViewController.m  
//  FootSafety  
//  
//  Created by 泽宇 徐 on 12-6-12.  
//  Copyright (c) 2012年 __MyCompanyName__. All rights reserved.  
//  
  
#import "ViewController.h"  
  
@interface ViewController ()  
  
@end  
  
@implementation ViewController  
@synthesize label;  
@synthesize readerView;  
  
- (void)viewDidLoad  
{  
    [super viewDidLoad];  
    // Do any additional setup after loading the view, typically from a nib.  
      
    // the delegate receives decode results  
    readerView.readerDelegate = self;  
      
    // you can use this to support the simulator  
    if(TARGET_IPHONE_SIMULATOR) {  
        cameraSim = [[ZBarCameraSimulator alloc]  
                     initWithViewController: self];  
        cameraSim.readerView = readerView;  
    }  
  
}  
  
-(void) viewDidAppear:(BOOL)animated  
{  
    // run the reader when the view is visible  
    [readerView start];  
}  
  
  
- (void) readerView: (ZBarReaderView*) view  
     didReadSymbols: (ZBarSymbolSet*) syms  
          fromImage: (UIImage*) img  
{  
    // do something useful with results  
    for(ZBarSymbol *sym in syms) {  
        self.label.text = sym.data;  
        break;  
    }  
}  
  
  
  
- (void)viewDidUnload  
{  
    [super viewDidUnload];  
    // Release any retained subviews of the main view.  
}  
  
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation  
{  
    return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);  
}  
  
-(void) dealloc  
{  
    [self.readerView release];  
    [self.label release];  
    [super dealloc];  
}  
  
@end  

在ViewController.xib文件中 增加一个view，并且修改view的类是ZBarReaderView ，并且指向 .h文件中定义的 
[cpp] view plain copy
ZBarReaderView *readerView;

查看全文

相关阅读:
Thinking in Java Reading Note(9.接口)
Thinking in java Reading Note(8.多态)
Thinking in Java Reading Note(7.复用类)
SQL必知必会
 Thinking in Java Reading Note(5.初始化与清理)
Thinking in Java Reading Note(2.一切都是对象)
鸟哥的Linux私房菜笔记（1.基础）
Thinking in Java Reading Note(1.对象导论)
CoreJava2 Reading Note(2:I/O)
CoreJava2 Reading Note(1:Stream)

原文地址：https://www.cnblogs.com/archoncap/p/5311740.html