ios 使用ZBar读取条形码和二维码

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（见附件）

4.在项目文件的target中加入 以下framework



5、.h代码为：

#import <UIKit/UIKit.h>

#import "ZBarSDK.h"

@protocol ScanCodeViewDelegate <NSObject>

-(void)finishRead:(NSString *)barCode;

@end

@interface ScanCodeViewController : UIViewController<ZBarReaderViewDelegate>{

id<ScanCodeViewDelegate> delegate;

UIImageView *lineView;

}

@property (weak, nonatomic) IBOutlet ZBarReaderView *readerView;

@property(assign,nonatomic) id<ScanCodeViewDelegate> delegate;

@end

6、.m代码为：

- (void)viewDidLoad

{

[super viewDidLoad];

self.title=@"条形码扫描";

self.navigationItem.rightBarButtonItem = [ViewUitls getRightUIBarButtonItem:@"取消" target:self action:@selector(cancelScan)];

_readerView.readerDelegate = self;

//关闭闪光灯

_readerView.torchMode = 0;

//取消手动对焦

_readerView.allowsPinchZoom=NO;

//扫描区域，这里可以自己调整

CGRect scanMaskRect = CGRectMake(100, CGRectGetMidY(_readerView.frame) - 126, 250, 250);

//处理模拟器

if (TARGET_IPHONE_SIMULATOR) {

ZBarCameraSimulator *cameraSimulator

= [[ZBarCameraSimulator alloc]initWithViewController:self];

cameraSimulator.readerView = _readerView;

}

[self.view addSubview:_readerView];

//扫描区域计算

CGRect scanCrop=[self getScanCrop:scanMaskRect readerViewBounds:self.readerView.bounds];

_readerView.scanCrop = scanCrop;

//这里添加了一个类似微信的扫描框，可以根据自己需要添加

UIImageView *imageView=[[UIImageView alloc] init];

if(kIsIphone5){

imageView.image=[UIImage imageNamed:@"scan_bg_568h"];

imageView.frame=CGRectMake(0, 0, 320, 568);

}else{

imageView.image=[UIImage imageNamed:@"scan_bg"];

imageView.frame=CGRectMake(0, 0, 320, 480);

}

[self.view addSubview:imageView];

//这里添加了类似微信的扫描线，并开始上线滑动动画

lineView=[[UIImageView alloc] initWithFrame:CGRectMake(51, 200, 219, 3)];

lineView.image=[UIImage imageNamed:@"scan_line"];

[self.view addSubview:lineView];

[self loadAnimationStart];

}

-(void)loadAnimationStart{

if(kIsIphone5){

[UIView animateWithDuration:2.0 animations:^{

lineView.frame=CGRectMake(lineView.frame.origin.x, 390,lineView.frame.size.width,lineView.frame.size.height);

} completion:^(BOOL finished) {

[NSTimer scheduledTimerWithTimeInterval:0.2 target:self selector:@selector(secStart) userInfo:nil repeats:NO];

}];

}else{

[UIView animateWithDuration:2.0 animations:^{

lineView.frame=CGRectMake(lineView.frame.origin.x, 345,lineView.frame.size.width,lineView.frame.size.height);

} completion:^(BOOL finished) {

[NSTimer scheduledTimerWithTimeInterval:0.2 target:self selector:@selector(secStart) userInfo:nil repeats:NO];

}];

}

}

-(void)secStart{

if(kIsIphone5){

lineView.frame=CGRectMake(lineView.frame.origin.x, 175,lineView.frame.size.width,lineView.frame.size.height);

[self loadAnimationStart];

}else{

lineView.frame=CGRectMake(lineView.frame.origin.x, 130,lineView.frame.size.width,lineView.frame.size.height);

[self loadAnimationStart];

}

}

-(void)cancelScan{

[_readerView stop];

[self dismissViewControllerAnimated:YES completion:nil];

}

- (CGRect)getScanCrop:(CGRect)rect readerViewBounds:(CGRect)rvBounds{

CGFloat x,y,width,height;

x = rect.origin.y / rvBounds.size.height;

y = 1 - (rect.origin.x + rect.size.width)
/ rvBounds.size.width;

width = (rect.origin.y + rect.size.height) /
rvBounds.size.height;

height = 1 - rect.origin.x / rvBounds.size.width;

returnCGRectMake(x, y, width, height);

}

-(void)viewDidAppear:(BOOL)animated{

[super viewDidAppear:YES];

[_readerView start];

}

- (void)readerView:(ZBarReaderView *)readerView didReadSymbols:(ZBarSymbolSet *)symbols fromImage:(UIImage *)image

{

NSString *str;

for (ZBarSymbol *symbol in symbols) {

DLog(@"%@", symbol.data);

str=symbol.data;

break;

}

[_readerView stop];

if([_delegate respondsToSelector:@selector(finishRead:)]){

[_delegate finishRead:str];

}

[self dismissViewControllerAnimated:YES completion:nil];

}
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