二维码框架ZBarSDK的使用和自定义二维码扫描界面方法

如果你不知道ZBarSDK怎么用，请下载demo
http://download.csdn.net/detail/u013686641/7858917
如果你已经配置好ZBarSDK ，那么下面这个类可以直接用

下面是效果图



//

//  头文件

//  TestProject

//

#import <UIKit/UIKit.h>

#import "ZBarSDK.h"

@interface yxpQrCode :UIViewController

@end

//

//  实现文件

//  TestProject

//

#import "yxpQrCode.h"

#define SCANVIEW_EdgeTop
40.0

#define SCANVIEW_EdgeLeft
50.0

#define TINTCOLOR_ALPHA
0.2  //浅色透明度

#define DARKCOLOR_ALPHA
0.5  //深色透明度

@interfaceyxpQrCode ()<ZBarReaderViewDelegate>
{
   UIView *_QrCodeline;
   NSTimer *_timer;

    

    //设置扫描画面
   UIView *_scanView;
   ZBarReaderView *_readerView;
}

@end

@implementation yxpQrCode

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle
*)nibBundleOrNil
{
   self = [superinitWithNibName:nibNameOrNil
bundle:nibBundleOrNil];
   if (self) {

        // Custom initialization
    }

    returnself;
}

- (void)viewDidLoad
{

    [superviewDidLoad];

    

    self.title=@"扫描二维码";

    //初始化扫描界面

    [selfsetScanView];

    

     _readerView= [[ZBarReaderViewalloc]init];

    _readerView.frame =CGRectMake(0,64,
VIEW_WIDTH, VIEW_HEIGHT -64);

    _readerView.tracksSymbols=NO;

    _readerView.readerDelegate =self;

    [_readerViewaddSubview:_scanView];

    //关闭闪光灯

    _readerView.torchMode =0;

    

    [self.viewaddSubview:_readerView];

    

    //扫描区域

    //readerView.scanCrop =

    

    [_readerViewstart];

    

    [selfcreateTimer];

    
}

#pragma mark -- ZBarReaderViewDelegate
-(void)readerView:(ZBarReaderView *)readerView didReadSymbols:(ZBarSymbolSet
*)symbols fromImage:(UIImage *)image
{

    constzbar_symbol_t *symbol =zbar_symbol_set_first_symbol(symbols.zbarSymbolSet);
   NSString *symbolStr = [NSStringstringWithUTF8String:
zbar_symbol_get_data(symbol)];

    

    //判断是否包含 头'http:'

    NSString *regex =@"http+:[^\\s]*";
   NSPredicate *predicate = [NSPredicatepredicateWithFormat:@"SELF
MATCHES %@",regex];

    

    

    UIAlertView *alertView=[[UIAlertViewalloc]
initWithTitle:@""message:symbolStr
delegate:nilcancelButtonTitle:@"取消"otherButtonTitles:nil];
    [alertViewshow];

    

    //判断是否包含 头'ssid:'

    NSString *ssid =@"ssid+:[^\\s]*";;
   NSPredicate *ssidPre = [NSPredicatepredicateWithFormat:@"SELF
MATCHES %@",ssid];

    
   if ([predicate
evaluateWithObject:symbolStr]) {

        
    }
   else
if([ssidPreevaluateWithObject:symbolStr]){

        
       NSArray *arr = [symbolStr
componentsSeparatedByString:@";"];

        

        NSArray * arrInfoHead = [[arrobjectAtIndex:0]componentsSeparatedByString:@":"];

        

        NSArray * arrInfoFoot = [[arrobjectAtIndex:1]componentsSeparatedByString:@":"];

        

        

        symbolStr = [NSStringstringWithFormat:@"ssid:
%@ \n password:%@",
                     [arrInfoHeadobjectAtIndex:1],[arrInfoFootobjectAtIndex:1]];

        
       UIPasteboard *pasteboard=[UIPasteboardgeneralPasteboard];

        //然后，可以使用如下代码来把一个字符串放置到剪贴板上：
        pasteboard.string = [arrInfoFootobjectAtIndex:1];
    }

    
}

//二维码的扫描区域
- (void)setScanView
{

    _scanView=[[UIViewalloc]
initWithFrame:CGRectMake(0,0,
VIEW_WIDTH,VIEW_HEIGHT-64)];

    _scanView.backgroundColor=[UIColorclearColor];

    

    //最上部view
   UIView* upView = [[UIViewalloc]
initWithFrame:CGRectMake(0,0,
VIEW_WIDTH,SCANVIEW_EdgeTop)];
    upView.alpha =TINTCOLOR_ALPHA;
    upView.backgroundColor = [UIColorblackColor];
    [_scanViewaddSubview:upView];

    

    //左侧的view

    UIView *leftView = [[UIViewalloc]
initWithFrame:CGRectMake(0,SCANVIEW_EdgeTop,
SCANVIEW_EdgeLeft,VIEW_WIDTH-2*SCANVIEW_EdgeLeft)];
    leftView.alpha =TINTCOLOR_ALPHA;
    leftView.backgroundColor = [UIColorblackColor];
    [_scanViewaddSubview:leftView];

    

    /******************中间扫描区域****************************/

    UIImageView *scanCropView=[[UIImageViewalloc]
initWithFrame:CGRectMake(SCANVIEW_EdgeLeft,SCANVIEW_EdgeTop,
VIEW_WIDTH-2*SCANVIEW_EdgeLeft,VIEW_WIDTH-2*SCANVIEW_EdgeLeft)];

    //scanCropView.image=[UIImage imageNamed:@""];

    
    scanCropView.layer.borderColor=[UIColorgetThemeColor].CGColor;
    scanCropView.layer.borderWidth=2.0;

    
    scanCropView.backgroundColor=[UIColorclearColor];
    [_scanViewaddSubview:scanCropView];

    

    

    //右侧的view

    UIView *rightView = [[UIViewalloc]
initWithFrame:CGRectMake(VIEW_WIDTH-SCANVIEW_EdgeLeft,SCANVIEW_EdgeTop,
SCANVIEW_EdgeLeft,VIEW_WIDTH-2*SCANVIEW_EdgeLeft)];
    rightView.alpha =TINTCOLOR_ALPHA;
    rightView.backgroundColor = [UIColorblackColor];
    [_scanViewaddSubview:rightView];

    

    

    //底部view

    UIView *downView = [[UIViewalloc]
initWithFrame:CGRectMake(0,VIEW_WIDTH-2*SCANVIEW_EdgeLeft+SCANVIEW_EdgeTop,VIEW_WIDTH,
VIEW_HEIGHT-(VIEW_WIDTH-2*SCANVIEW_EdgeLeft+SCANVIEW_EdgeTop)-64)];

    //downView.alpha = TINTCOLOR_ALPHA;

    downView.backgroundColor = [[UIColorblackColor]
colorWithAlphaComponent:TINTCOLOR_ALPHA];
    [_scanViewaddSubview:downView];

    

    //用于说明的label
   UILabel *labIntroudction= [[UILabelalloc]
init];
    labIntroudction.backgroundColor = [UIColorclearColor];
    labIntroudction.frame=CGRectMake(0,5,
VIEW_WIDTH,20);
    labIntroudction.numberOfLines=1;
    labIntroudction.font=[UIFontsystemFontOfSize:15.0];
    labIntroudction.textAlignment=NSTextAlignmentCenter;
    labIntroudction.textColor=[UIColorwhiteColor];
    labIntroudction.text=@"将二维码对准方框，即可自动扫描";
    [downViewaddSubview:labIntroudction];

    
   UIView *darkView = [[UIViewalloc]
initWithFrame:CGRectMake(0, downView.frame.size.height-100.0,VIEW_WIDTH,
100.0)];

    darkView.backgroundColor = [[UIColorblackColor] 
colorWithAlphaComponent:DARKCOLOR_ALPHA];
    [downViewaddSubview:darkView];

    

    //用于开关灯操作的button
   UIButton *openButton=[[UIButtonalloc]
initWithFrame:CGRectMake(10,20,
300.0, 40.0)];
    [openButtonsetTitle:@"开启闪光灯" forState:UIControlStateNormal];

    [openButton setTitleColor:[UIColorwhiteColor]
forState:UIControlStateNormal];

    openButton.titleLabel.textAlignment=NSTextAlignmentCenter;
    openButton.backgroundColor=[UIColorgetThemeColor];
    openButton.titleLabel.font=[UIFontsystemFontOfSize:22.0];

    [openButton addTarget:selfaction:@selector(openLight)forControlEvents:UIControlEventTouchUpInside];
    [darkViewaddSubview:openButton];

    

    //画中间的基准线

    _QrCodeline = [[UIViewalloc]
initWithFrame:CGRectMake(SCANVIEW_EdgeLeft,SCANVIEW_EdgeTop,
VIEW_WIDTH-2*SCANVIEW_EdgeLeft,2)];

    _QrCodeline.backgroundColor = [UIColorgetThemeColor];

    [_scanViewaddSubview:_QrCodeline];
}
- (void)openLight
{

    if (_readerView.torchMode ==0)
{

        _readerView.torchMode =1;
    }else
    {

        _readerView.torchMode =0;
    }
}
- (void)viewWillDisappear:(BOOL)animated
{
    [superviewWillDisappear:animated];

    

    if (_readerView.torchMode ==1)
{

        _readerView.torchMode =0;
    }

    [selfstopTimer];

    

     [_readerViewstop];

    
}

//二维码的横线移动
- (void)moveUpAndDownLine
{

    CGFloat Y=_QrCodeline.frame.origin.y;

    //CGRectMake(SCANVIEW_EdgeLeft, SCANVIEW_EdgeTop, VIEW_WIDTH-2*SCANVIEW_EdgeLeft, 1)]
   if (VIEW_WIDTH-2*SCANVIEW_EdgeLeft+SCANVIEW_EdgeTop==Y){

        
        [UIView beginAnimations:@"asa" context:nil];
        [UIView setAnimationDuration:1];
        _QrCodeline.frame=CGRectMake(SCANVIEW_EdgeLeft, SCANVIEW_EdgeTop, VIEW_WIDTH-2*SCANVIEW_EdgeLeft,1);
        [UIView commitAnimations];
    }elseif(SCANVIEW_EdgeTop==Y){
        [UIView beginAnimations:@"asa" context:nil];
        [UIView setAnimationDuration:1];
        _QrCodeline.frame=CGRectMake(SCANVIEW_EdgeLeft, VIEW_WIDTH-2*SCANVIEW_EdgeLeft+SCANVIEW_EdgeTop, VIEW_WIDTH-2*SCANVIEW_EdgeLeft,1);
        [UIView commitAnimations];
    }

    
}

- (void)createTimer
{

    //创建一个时间计数
    _timer=[NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(moveUpAndDownLine)
userInfo:nil repeats:YES];
}

- (void)stopTimer
{
   if ([_timer isValid] ==
YES) {
        [_timer invalidate];
        _timer =nil;
    }
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.
}

@end