ZBarReaderView 使用 设定扫描范围 整理 转载
2015-11-21 09:28
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ZBar为我们提供了两种使用方式，一种是直接调用ZBar提供的ZBarReaderViewController打开一个扫描界面，另一种方式是使用ZBar提供的可以嵌在其他视图中的ZBarReaderView，实际项目中我们更可能会使用第二种方式，这可以让我们对界面做更多的定制。
ZBar使用起来也非常简单，将ZBarSDK导入项目，在需要使用ZBar的文件中导入ZBarSDK.h头文件即可，以下是ZBarReaderView的初始化方法：
ZBarReaderView readerView = [[ZBarReaderView alloc]init];
readerView.frame = CGRectMake(0, 44, self.view.frame.size.width, self.view.frame.size.height - 44);
readerView.readerDelegate = self;
//关闭闪光灯
readerView.torchMode = 0;
//扫描区域
CGRect scanMaskRect = CGRectMake(60, CGRectGetMidY(readerView.frame) - 126, 200, 200);
//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
readerView.scanCrop = [self getScanCrop:scanMaskRect readerViewBounds:self.readerView.bounds];
[readerView start];
以上代码需要说明的有以下几点：
闪光灯设置
我不希望在扫描二维码时开启闪光灯，所以将ZBarReaderView的torchMode设为0，你可以将它设置为其他任何合适的值。
扫描区域计算
这点比较重要，我们常用的二维码扫描软件的有效扫描区域一般都是中央区域，其他部分是不进行扫描的，ZBar可以通过ZBarReaderView的scanCrop属性设置扫描区域，它的默认值是CGRect(0, 0, 1, 1),表示整个ZBarReaderView区域都是有效的扫描区域。我们需要把扫描区域坐标计算为对应的百度分数坐标，也就是以上代码中调用的getScanCrop:readerViewBounds方法，亲测没有问题，如下所示:
-(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);
}
PS：在网上找到很多这个方法都是将横坐标和纵坐标交叉，这样是有问题的，仔细想一下就会明白。
初始化部分完成之后，就可以调用ZBarReaderView的start方法开始扫描了，需要让你的类实现ZBarReaderViewDelegate协议，在扫描到二维码时会调用delegate的对应方法。最后，当二维码已经识别时候，可以调用ZBarReaderView的stop方法停止扫描。如下所示:
- (void)readerView:(ZBarReaderView *)readerView didReadSymbols:(ZBarSymbolSet *)symbols fromImage:(UIImage *)image
{
for (ZBarSymbol *symbol in symbols) {
NSLog(@"%@", symbol.data);
break;
}
[self.readerView stop];
}
转自：http://blog.sina.com.cn/s/blog_b8e976830101cpr7.html
#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:nibNameOrNilbundle: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:symbolStrdelegate: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 ([predicateevaluateWithObject:symbolStr]) {
}
elseif([ssidPreevaluateWithObject:symbolStr]){
NSArray *arr = [symbolStrcomponentsSeparatedByString:@";"];
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];
[openButtonaddTarget: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:selfselector:@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
整合修改版：
//
// ScanViewController.m
// timeweb
//
// Created by qf on 15/11/20.
// Copyright © 2015年 cgb. All rights reserved.
//
#import "ScanViewController.h"
#import "CGBNavigationController.h"
#define VIEW_WIDTH SCREEN_WIDTH
#define VIEW_HEIGHT SCREEN_HEIGHT
#define SCANVIEW_EdgeTop 64+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
#define getThemeColor greenColor
@interface ScanViewController ()< ZBarReaderViewDelegate >
{
ZBarReaderView *_readerView;
UIView * _scanView;
UIView *_QrCodeline;
NSTimer *_timer;
UIImageView * imgView;
}
@end
@implementation ScanViewController
- (void)viewDidLoad{
[super viewDidLoad];
self . title =
@"扫描二维码" ;
//初始化扫描界面
[ self setScanView ];
_readerView = [[ ZBarReaderView alloc ] init ];
_readerView . frame = CGRectMake ( 0 ,
0 , VIEW_WIDTH , VIEW_HEIGHT );
_readerView . tracksSymbols = NO ;
_readerView . readerDelegate = self ;
[ _readerView addSubview : _scanView ];
//关闭闪光灯
_readerView . torchMode = 0 ;
[ self . view addSubview : _readerView ];
//扫描区域
//CGRect scanMaskRect = CGRectMake(60, CGRectGetMidY(_readerView.frame) - 126, 200, 200);
//_readerView.scanCrop = CGRectMake(0, 0, 1, 1);
[ _readerView start ];
[self back];
[self createTimer];
}
- (void)back{
UIImageView * imgView = [[UIImageView alloc]init];
imgView.image = [UIImage imageNamed:@"menu_top_bg7"];
[self.view addSubview:imgView];
[imgView mas_makeConstraints:^(MASConstraintMaker *make) {
make.height.mas_equalTo(64);
make.width.mas_equalTo(self.view.mas_width);
make.top.equalTo(self.view.mas_top);
}];
UIButton * leftButton = [Common addCustomButtonWithFrame:CGRectMake(15,
30, 50,
20) title:@"返回" image:[UIImage imageNamed:@"icon_index_selectcity"]
bgImage:nil tag:100 target:self action:@selector(leftButtonClick:)];
[leftButton setImage:[UIImage imageNamed:@"icon_index_selectcity"] forState:UIControlStateHighlighted];
leftButton.titleLabel.textAlignment = NSTextAlignmentLeft;
leftButton.titleLabel.font = [UIFont systemFontOfSize:16];
leftButton.titleEdgeInsets = UIEdgeInsetsMake(0, -35,
0, 0);
leftButton.imageEdgeInsets = UIEdgeInsetsMake(0,
0, 0, -60);
[self.view addSubview:leftButton];
[leftButton mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.equalTo(self.view.mas_left).offset(20);
make.top.mas_equalTo(self.view.mas_top).offset(30);
make.width.mas_equalTo(50);
make.height.mas_equalTo(20);
}];
}
- (void)leftButtonClick:(UIButton *)btn{
[self dismissViewControllerAnimated:YES completion:nil];
}
-(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);
}
- ( void )setScanView
{
_scanView =[[ UIView alloc ] initWithFrame : CGRectMake (
0 , 0 , VIEW_WIDTH , SCREEN_HEIGHT )];
_scanView . backgroundColor =[ UIColor clearColor ];
//最上部view
UIView * upView = [[ UIView alloc ] initWithFrame : CGRectMake (
0 , 64 , VIEW_WIDTH , SCANVIEW_EdgeTop )];
upView. alpha = TINTCOLOR_ALPHA ;
upView. backgroundColor = [ UIColor blackColor ];
[ _scanView addSubview :upView];
//左侧的view
UIView *leftView = [[ UIView alloc ] initWithFrame : CGRectMake (
0 , SCANVIEW_EdgeTop +64, SCANVIEW_EdgeLeft , VIEW_WIDTH -
2 * SCANVIEW_EdgeLeft )];
leftView. alpha = TINTCOLOR_ALPHA ;
leftView. backgroundColor = [ UIColor blackColor ];
[ _scanView addSubview :leftView];
/******************中间扫描区域****************************/
UIImageView *scanCropView=[[ UIImageView alloc ] initWithFrame : CGRectMake ( SCANVIEW_EdgeLeft , SCANVIEW_EdgeTop +64, VIEW_WIDTH -
2 * SCANVIEW_EdgeLeft , VIEW_WIDTH -
2 * SCANVIEW_EdgeLeft )];
//scanCropView.image=[UIImage imageNamed:@""];
scanCropView. layer . borderColor =[ UIColor getThemeColor].CGColor ;
scanCropView. layer . borderWidth = 2.0 ;
scanCropView. backgroundColor =[ UIColor clearColor ];
imgView = scanCropView;
[ _scanView addSubview :scanCropView];
//右侧的view
UIView *rightView = [[ UIView alloc ] initWithFrame : CGRectMake ( VIEW_WIDTH - SCANVIEW_EdgeLeft , SCANVIEW_EdgeTop+64 , SCANVIEW_EdgeLeft , VIEW_WIDTH -
2 * SCANVIEW_EdgeLeft )];
rightView. alpha = TINTCOLOR_ALPHA ;
rightView. backgroundColor = [ UIColor blackColor ];
[ _scanView addSubview :rightView];
//底部view
UIView *downView = [[ UIView alloc ] initWithFrame : CGRectMake (
0 , VIEW_WIDTH - 2 * SCANVIEW_EdgeLeft + SCANVIEW_EdgeTop +64, VIEW_WIDTH , SCREEN_HEIGHT -( VIEW_WIDTH -
2 * SCANVIEW_EdgeLeft + SCANVIEW_EdgeTop )-64 )];
//downView.alpha = TINTCOLOR_ALPHA;
downView. backgroundColor = [[ UIColor blackColor ] colorWithAlphaComponent : TINTCOLOR_ALPHA ];
[ _scanView addSubview :downView];
//用于说明的label
UILabel *labIntroudction= [[ UILabel alloc ] init ];
labIntroudction. backgroundColor = [ UIColor clearColor ];
labIntroudction. frame = CGRectMake ( 0 ,
5 , VIEW_WIDTH , 20 );
labIntroudction. numberOfLines = 1 ;
labIntroudction. font =[ UIFont systemFontOfSize :
15.0 ];
labIntroudction. textAlignment = NSTextAlignmentCenter ;
labIntroudction. textColor =[ UIColor whiteColor ];
labIntroudction. text = @"将二维码对准方框，即可自动扫描" ;
[downView addSubview :labIntroudction];
UIView *darkView = [[ UIView alloc ] initWithFrame : CGRectMake (
0 , downView. frame . size . height -
100.0 , VIEW_WIDTH , 100.0 )];
darkView. backgroundColor = [[ UIColor blackColor ] colorWithAlphaComponent : DARKCOLOR_ALPHA ];
[downView addSubview :darkView];
//用于开关灯操作的button
UIButton *openButton=[[ UIButton alloc ] initWithFrame : CGRectMake (
10 , 20 ,
300.0 , 40.0 )];
[openButton setTitle : @"开启闪光灯" forState: UIControlStateNormal ];
[openButton setTitleColor :[ UIColor whiteColor ] forState : UIControlStateNormal ];
openButton. titleLabel . textAlignment = NSTextAlignmentCenter ;
openButton. backgroundColor =[ UIColor getThemeColor ];
openButton. titleLabel . font =[ UIFont systemFontOfSize :
22.0 ];
[openButton addTarget : self action :
@selector (openLight) forControlEvents : UIControlEventTouchUpInside ];
[darkView addSubview :openButton];
_QrCodeline = [[ UIView alloc ] initWithFrame : CGRectMake ( SCANVIEW_EdgeLeft , SCANVIEW_EdgeTop +64 , VIEW_WIDTH -
2 * SCANVIEW_EdgeLeft , 2 )];
_QrCodeline . backgroundColor = [ UIColor getThemeColor ];
[ _scanView addSubview : _QrCodeline ];
}
- ( void )openLight
{
if ( _readerView . torchMode ==
0 ) {
_readerView . torchMode = 1 ;
} else
{
_readerView . torchMode = 0 ;
}
}
-( void )readerView:( ZBarReaderView *)readerView didReadSymbols:( ZBarSymbolSet *)symbols fromImage:( UIImage *)image
{
const zbar_symbol_t *symbol = zbar_symbol_set_first_symbol (symbols. zbarSymbolSet );
NSString *symbolStr = [ NSString stringWithUTF8String : zbar_symbol_get_data (symbol)];
//判断是否包含
头'http:'
NSString *regex = @"http+:[^//s]*" ;
NSPredicate *predicate = [ NSPredicate predicateWithFormat :
@"SELF MATCHES %@" ,regex];
[[UIApplication sharedApplication]openURL:[NSURL URLWithString:symbolStr]];
//判断是否包含
头'ssid:'
NSString *ssid = @"ssid+:[^//s]*" ;;
NSPredicate *ssidPre = [ NSPredicate predicateWithFormat :
@"SELF MATCHES %@" ,ssid];
if ([predicate evaluateWithObject :symbolStr]) {
}
else
if ([ssidPre evaluateWithObject :symbolStr]){
NSArray *arr = [symbolStr componentsSeparatedByString :
@";" ];
NSArray * arrInfoHead = [[arr objectAtIndex :
0 ] componentsSeparatedByString :
@":" ];
NSArray * arrInfoFoot = [[arr objectAtIndex :
1 ] componentsSeparatedByString :
@":" ];
symbolStr = [ NSString stringWithFormat :
@"ssid: %@ /n password:%@" ,
[arrInfoHead objectAtIndex :
1 ],[arrInfoFoot objectAtIndex :
1 ]];
UIPasteboard *pasteboard=[ UIPasteboard generalPasteboard ];
//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 = [arrInfoFoot objectAtIndex :
1 ];
}
}
- (void)moveUpAndDownLine
{
CGFloat Y=_QrCodeline.frame.origin.y;
//CGRectMake(SCANVIEW_EdgeLeft, SCANVIEW_EdgeTop, VIEW_WIDTH-2*SCANVIEW_EdgeLeft, 1)]
CGFloat Y2=imgView.frame.origin.y;
CGFloat Y3=imgView.frame.origin.y+imgView.frame.size.height;
CGRect frame = _QrCodeline.frame;
if (Y3 <= Y){
[UIView beginAnimations:@"asa" context:nil];
[UIView setAnimationDuration:1];
// _QrCodeline.frame=CGRectMake(SCANVIEW_EdgeLeft, SCANVIEW_EdgeTop, VIEW_WIDTH-2*SCANVIEW_EdgeLeft,1);
frame.origin.y = Y2;
_QrCodeline.frame = frame;
[UIView
commitAnimations];
}else
if(Y2 >= Y){
[UIView
beginAnimations:@"asa"
context:nil];
[UIView
setAnimationDuration:1];
frame.origin.y = Y3;
_QrCodeline.frame = frame;
// _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 )viewWillDisappear:(
BOOL )animated
{
[ super
viewWillDisappear :animated];
if (_readerView .
torchMode == 1 ) {
_readerView .
torchMode = 0 ;
}
[self
stopTimer];
[_readerView
stop];
}
- (UIStatusBarStyle)preferredStatusBarStyle{
return
UIStatusBarStyleLightContent;
}
@end
ZBar使用起来也非常简单，将ZBarSDK导入项目，在需要使用ZBar的文件中导入ZBarSDK.h头文件即可，以下是ZBarReaderView的初始化方法：
ZBarReaderView readerView = [[ZBarReaderView alloc]init];
readerView.frame = CGRectMake(0, 44, self.view.frame.size.width, self.view.frame.size.height - 44);
readerView.readerDelegate = self;
//关闭闪光灯
readerView.torchMode = 0;
//扫描区域
CGRect scanMaskRect = CGRectMake(60, CGRectGetMidY(readerView.frame) - 126, 200, 200);
//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
readerView.scanCrop = [self getScanCrop:scanMaskRect readerViewBounds:self.readerView.bounds];
[readerView start];
以上代码需要说明的有以下几点：
闪光灯设置
我不希望在扫描二维码时开启闪光灯，所以将ZBarReaderView的torchMode设为0，你可以将它设置为其他任何合适的值。
扫描区域计算
这点比较重要，我们常用的二维码扫描软件的有效扫描区域一般都是中央区域，其他部分是不进行扫描的，ZBar可以通过ZBarReaderView的scanCrop属性设置扫描区域，它的默认值是CGRect(0, 0, 1, 1),表示整个ZBarReaderView区域都是有效的扫描区域。我们需要把扫描区域坐标计算为对应的百度分数坐标，也就是以上代码中调用的getScanCrop:readerViewBounds方法，亲测没有问题，如下所示:
-(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);
}
PS：在网上找到很多这个方法都是将横坐标和纵坐标交叉，这样是有问题的，仔细想一下就会明白。
初始化部分完成之后，就可以调用ZBarReaderView的start方法开始扫描了，需要让你的类实现ZBarReaderViewDelegate协议，在扫描到二维码时会调用delegate的对应方法。最后，当二维码已经识别时候，可以调用ZBarReaderView的stop方法停止扫描。如下所示:
- (void)readerView:(ZBarReaderView *)readerView didReadSymbols:(ZBarSymbolSet *)symbols fromImage:(UIImage *)image
{
for (ZBarSymbol *symbol in symbols) {
NSLog(@"%@", symbol.data);
break;
}
[self.readerView stop];
}
转自：http://blog.sina.com.cn/s/blog_b8e976830101cpr7.html
#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:nibNameOrNilbundle: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:symbolStrdelegate: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 ([predicateevaluateWithObject:symbolStr]) {
}
elseif([ssidPreevaluateWithObject:symbolStr]){
NSArray *arr = [symbolStrcomponentsSeparatedByString:@";"];
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];
[openButtonaddTarget: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:selfselector:@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
整合修改版：
//
// ScanViewController.m
// timeweb
//
// Created by qf on 15/11/20.
// Copyright © 2015年 cgb. All rights reserved.
//
#import "ScanViewController.h"
#import "CGBNavigationController.h"
#define VIEW_WIDTH SCREEN_WIDTH
#define VIEW_HEIGHT SCREEN_HEIGHT
#define SCANVIEW_EdgeTop 64+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
#define getThemeColor greenColor
@interface ScanViewController ()< ZBarReaderViewDelegate >
{
ZBarReaderView *_readerView;
UIView * _scanView;
UIView *_QrCodeline;
NSTimer *_timer;
UIImageView * imgView;
}
@end
@implementation ScanViewController
- (void)viewDidLoad{
[super viewDidLoad];
self . title =
@"扫描二维码" ;
//初始化扫描界面
[ self setScanView ];
_readerView = [[ ZBarReaderView alloc ] init ];
_readerView . frame = CGRectMake ( 0 ,
0 , VIEW_WIDTH , VIEW_HEIGHT );
_readerView . tracksSymbols = NO ;
_readerView . readerDelegate = self ;
[ _readerView addSubview : _scanView ];
//关闭闪光灯
_readerView . torchMode = 0 ;
[ self . view addSubview : _readerView ];
//扫描区域
//CGRect scanMaskRect = CGRectMake(60, CGRectGetMidY(_readerView.frame) - 126, 200, 200);
//_readerView.scanCrop = CGRectMake(0, 0, 1, 1);
[ _readerView start ];
[self back];
[self createTimer];
}
- (void)back{
UIImageView * imgView = [[UIImageView alloc]init];
imgView.image = [UIImage imageNamed:@"menu_top_bg7"];
[self.view addSubview:imgView];
[imgView mas_makeConstraints:^(MASConstraintMaker *make) {
make.height.mas_equalTo(64);
make.width.mas_equalTo(self.view.mas_width);
make.top.equalTo(self.view.mas_top);
}];
UIButton * leftButton = [Common addCustomButtonWithFrame:CGRectMake(15,
30, 50,
20) title:@"返回" image:[UIImage imageNamed:@"icon_index_selectcity"]
bgImage:nil tag:100 target:self action:@selector(leftButtonClick:)];
[leftButton setImage:[UIImage imageNamed:@"icon_index_selectcity"] forState:UIControlStateHighlighted];
leftButton.titleLabel.textAlignment = NSTextAlignmentLeft;
leftButton.titleLabel.font = [UIFont systemFontOfSize:16];
leftButton.titleEdgeInsets = UIEdgeInsetsMake(0, -35,
0, 0);
leftButton.imageEdgeInsets = UIEdgeInsetsMake(0,
0, 0, -60);
[self.view addSubview:leftButton];
[leftButton mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.equalTo(self.view.mas_left).offset(20);
make.top.mas_equalTo(self.view.mas_top).offset(30);
make.width.mas_equalTo(50);
make.height.mas_equalTo(20);
}];
}
- (void)leftButtonClick:(UIButton *)btn{
[self dismissViewControllerAnimated:YES completion:nil];
}
-(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);
}
- ( void )setScanView
{
_scanView =[[ UIView alloc ] initWithFrame : CGRectMake (
0 , 0 , VIEW_WIDTH , SCREEN_HEIGHT )];
_scanView . backgroundColor =[ UIColor clearColor ];
//最上部view
UIView * upView = [[ UIView alloc ] initWithFrame : CGRectMake (
0 , 64 , VIEW_WIDTH , SCANVIEW_EdgeTop )];
upView. alpha = TINTCOLOR_ALPHA ;
upView. backgroundColor = [ UIColor blackColor ];
[ _scanView addSubview :upView];
//左侧的view
UIView *leftView = [[ UIView alloc ] initWithFrame : CGRectMake (
0 , SCANVIEW_EdgeTop +64, SCANVIEW_EdgeLeft , VIEW_WIDTH -
2 * SCANVIEW_EdgeLeft )];
leftView. alpha = TINTCOLOR_ALPHA ;
leftView. backgroundColor = [ UIColor blackColor ];
[ _scanView addSubview :leftView];
/******************中间扫描区域****************************/
UIImageView *scanCropView=[[ UIImageView alloc ] initWithFrame : CGRectMake ( SCANVIEW_EdgeLeft , SCANVIEW_EdgeTop +64, VIEW_WIDTH -
2 * SCANVIEW_EdgeLeft , VIEW_WIDTH -
2 * SCANVIEW_EdgeLeft )];
//scanCropView.image=[UIImage imageNamed:@""];
scanCropView. layer . borderColor =[ UIColor getThemeColor].CGColor ;
scanCropView. layer . borderWidth = 2.0 ;
scanCropView. backgroundColor =[ UIColor clearColor ];
imgView = scanCropView;
[ _scanView addSubview :scanCropView];
//右侧的view
UIView *rightView = [[ UIView alloc ] initWithFrame : CGRectMake ( VIEW_WIDTH - SCANVIEW_EdgeLeft , SCANVIEW_EdgeTop+64 , SCANVIEW_EdgeLeft , VIEW_WIDTH -
2 * SCANVIEW_EdgeLeft )];
rightView. alpha = TINTCOLOR_ALPHA ;
rightView. backgroundColor = [ UIColor blackColor ];
[ _scanView addSubview :rightView];
//底部view
UIView *downView = [[ UIView alloc ] initWithFrame : CGRectMake (
0 , VIEW_WIDTH - 2 * SCANVIEW_EdgeLeft + SCANVIEW_EdgeTop +64, VIEW_WIDTH , SCREEN_HEIGHT -( VIEW_WIDTH -
2 * SCANVIEW_EdgeLeft + SCANVIEW_EdgeTop )-64 )];
//downView.alpha = TINTCOLOR_ALPHA;
downView. backgroundColor = [[ UIColor blackColor ] colorWithAlphaComponent : TINTCOLOR_ALPHA ];
[ _scanView addSubview :downView];
//用于说明的label
UILabel *labIntroudction= [[ UILabel alloc ] init ];
labIntroudction. backgroundColor = [ UIColor clearColor ];
labIntroudction. frame = CGRectMake ( 0 ,
5 , VIEW_WIDTH , 20 );
labIntroudction. numberOfLines = 1 ;
labIntroudction. font =[ UIFont systemFontOfSize :
15.0 ];
labIntroudction. textAlignment = NSTextAlignmentCenter ;
labIntroudction. textColor =[ UIColor whiteColor ];
labIntroudction. text = @"将二维码对准方框，即可自动扫描" ;
[downView addSubview :labIntroudction];
UIView *darkView = [[ UIView alloc ] initWithFrame : CGRectMake (
0 , downView. frame . size . height -
100.0 , VIEW_WIDTH , 100.0 )];
darkView. backgroundColor = [[ UIColor blackColor ] colorWithAlphaComponent : DARKCOLOR_ALPHA ];
[downView addSubview :darkView];
//用于开关灯操作的button
UIButton *openButton=[[ UIButton alloc ] initWithFrame : CGRectMake (
10 , 20 ,
300.0 , 40.0 )];
[openButton setTitle : @"开启闪光灯" forState: UIControlStateNormal ];
[openButton setTitleColor :[ UIColor whiteColor ] forState : UIControlStateNormal ];
openButton. titleLabel . textAlignment = NSTextAlignmentCenter ;
openButton. backgroundColor =[ UIColor getThemeColor ];
openButton. titleLabel . font =[ UIFont systemFontOfSize :
22.0 ];
[openButton addTarget : self action :
@selector (openLight) forControlEvents : UIControlEventTouchUpInside ];
[darkView addSubview :openButton];
_QrCodeline = [[ UIView alloc ] initWithFrame : CGRectMake ( SCANVIEW_EdgeLeft , SCANVIEW_EdgeTop +64 , VIEW_WIDTH -
2 * SCANVIEW_EdgeLeft , 2 )];
_QrCodeline . backgroundColor = [ UIColor getThemeColor ];
[ _scanView addSubview : _QrCodeline ];
}
- ( void )openLight
{
if ( _readerView . torchMode ==
0 ) {
_readerView . torchMode = 1 ;
} else
{
_readerView . torchMode = 0 ;
}
}
-( void )readerView:( ZBarReaderView *)readerView didReadSymbols:( ZBarSymbolSet *)symbols fromImage:( UIImage *)image
{
const zbar_symbol_t *symbol = zbar_symbol_set_first_symbol (symbols. zbarSymbolSet );
NSString *symbolStr = [ NSString stringWithUTF8String : zbar_symbol_get_data (symbol)];
//判断是否包含
头'http:'
NSString *regex = @"http+:[^//s]*" ;
NSPredicate *predicate = [ NSPredicate predicateWithFormat :
@"SELF MATCHES %@" ,regex];
[[UIApplication sharedApplication]openURL:[NSURL URLWithString:symbolStr]];
//判断是否包含
头'ssid:'
NSString *ssid = @"ssid+:[^//s]*" ;;
NSPredicate *ssidPre = [ NSPredicate predicateWithFormat :
@"SELF MATCHES %@" ,ssid];
if ([predicate evaluateWithObject :symbolStr]) {
}
else
if ([ssidPre evaluateWithObject :symbolStr]){
NSArray *arr = [symbolStr componentsSeparatedByString :
@";" ];
NSArray * arrInfoHead = [[arr objectAtIndex :
0 ] componentsSeparatedByString :
@":" ];
NSArray * arrInfoFoot = [[arr objectAtIndex :
1 ] componentsSeparatedByString :
@":" ];
symbolStr = [ NSString stringWithFormat :
@"ssid: %@ /n password:%@" ,
[arrInfoHead objectAtIndex :
1 ],[arrInfoFoot objectAtIndex :
1 ]];
UIPasteboard *pasteboard=[ UIPasteboard generalPasteboard ];
//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 = [arrInfoFoot objectAtIndex :
1 ];
}
}
- (void)moveUpAndDownLine
{
CGFloat Y=_QrCodeline.frame.origin.y;
//CGRectMake(SCANVIEW_EdgeLeft, SCANVIEW_EdgeTop, VIEW_WIDTH-2*SCANVIEW_EdgeLeft, 1)]
CGFloat Y2=imgView.frame.origin.y;
CGFloat Y3=imgView.frame.origin.y+imgView.frame.size.height;
CGRect frame = _QrCodeline.frame;
if (Y3 <= Y){
[UIView beginAnimations:@"asa" context:nil];
[UIView setAnimationDuration:1];
// _QrCodeline.frame=CGRectMake(SCANVIEW_EdgeLeft, SCANVIEW_EdgeTop, VIEW_WIDTH-2*SCANVIEW_EdgeLeft,1);
frame.origin.y = Y2;
_QrCodeline.frame = frame;
[UIView
commitAnimations];
}else
if(Y2 >= Y){
[UIView
beginAnimations:@"asa"
context:nil];
[UIView
setAnimationDuration:1];
frame.origin.y = Y3;
_QrCodeline.frame = frame;
// _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 )viewWillDisappear:(
BOOL )animated
{
[ super
viewWillDisappear :animated];
if (_readerView .
torchMode == 1 ) {
_readerView .
torchMode = 0 ;
}
[self
stopTimer];
[_readerView
stop];
}
- (UIStatusBarStyle)preferredStatusBarStyle{
return
UIStatusBarStyleLightContent;
}
@end
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