1.下载ZBar SDK并导入工程
地址: https://github.com/bmorton/ZBarSDK
2.往项目中添加Framework框架及动态库
AVFoundation.framework,CoreMedia.framework,CoreVideo.framework,libiconv.dylib和libber.a
3.在使用的地方引入头文件
#import "ZBarSDK.h"
4.使用
ZBarReaderViewController扫描二维码
扫描:
- (
void
)scan:(
id
)sender
{
ZBarReaderViewController *reader = [[ ZBarReaderViewController alloc ] init ];
reader. readerDelegate = self ;
reader. supportedOrientationsMask = ZBarOrientationMaskAll ;
ZBarImageScanner *scanner = reader. scanner ;
[scanner setSymbology : ZBAR_I25 config : ZBAR_CFG_ENABLE to : 0 ];
reader. showsZBarControls = YES ;
[ self presentViewController :reader animated : YES completion : nil ];
{
ZBarReaderViewController *reader = [[ ZBarReaderViewController alloc ] init ];
reader. readerDelegate = self ;
reader. supportedOrientationsMask = ZBarOrientationMaskAll ;
ZBarImageScanner *scanner = reader. scanner ;
[scanner setSymbology : ZBAR_I25 config : ZBAR_CFG_ENABLE to : 0 ];
reader. showsZBarControls = YES ;
[ self presentViewController :reader animated : YES completion : nil ];
}
现在获取二维码的相关信息:
- (
void
)imagePickerController:(
UIImagePickerController
*)picker didFinishPickingMediaWithInfo:(
NSDictionary
*)info
{
id < NSFastEnumeration >results = [info objectForKey : ZBarReaderControllerResults ];
ZBarSymbol *symbol = nil ;
// 代码如何修改
for (symbol in results)
break ;
//symbol = results;
imageVIew . image = [info objectForKey : UIImagePickerControllerOriginalImage ];
{
id < NSFastEnumeration >results = [info objectForKey : ZBarReaderControllerResults ];
ZBarSymbol *symbol = nil ;
// 代码如何修改
for (symbol in results)
break ;
//symbol = results;
imageVIew . image = [info objectForKey : UIImagePickerControllerOriginalImage ];
[picker dismissViewControllerAnimated:YES completion:nil];
_label
.
text
= symbol.
data
;
NSLog(@"扫描内容:%@",symbol.data);
}
5.使用
ZBarReaderView实现扫描页面高度订制
实现协议
ZBarReaderViewDelegate (UIAlertView)
并定义:
ZBarReaderView
*readerVIew;
ZBarCameraSimulator *cameraSim;
实现代码:
readerVIew
= [[
ZBarReaderView
alloc
]
init
];
readerVIew . frame = CGRectMake ( 50 , 44 , 200 , 200 );
readerVIew . readerDelegate = self ;
// 关闭闪光灯
readerVIew . torchMode = 0 ;
// 扫描区域:很重要
CGRect scanMaskRect = CGRectMake ( 60 , CGRectGetMidY ( readerVIew . frame )- 126 , 200 , 200 );
//[readerVIew setAllowsPinchZoom:YES];
if ( TARGET_IPHONE_SIMULATOR ) // 应为是否有权限?
{
cameraSim = [[ ZBarCameraSimulator alloc ] initWithViewController : self ];
cameraSim . readerView = readerVIew ;
}
[ self . view addSubview : readerVIew ];
// 扫描区域计算 : 加上该代码后似乎无法扫描出结果了
readerVIew . scanCrop = [ self getScanCrop :scanMaskRect readerViewBounds : readerVIew . bounds ];
[ readerVIew start ];
readerVIew . frame = CGRectMake ( 50 , 44 , 200 , 200 );
readerVIew . readerDelegate = self ;
// 关闭闪光灯
readerVIew . torchMode = 0 ;
// 扫描区域:很重要
CGRect scanMaskRect = CGRectMake ( 60 , CGRectGetMidY ( readerVIew . frame )- 126 , 200 , 200 );
//[readerVIew setAllowsPinchZoom:YES];
if ( TARGET_IPHONE_SIMULATOR ) // 应为是否有权限?
{
cameraSim = [[ ZBarCameraSimulator alloc ] initWithViewController : self ];
cameraSim . readerView = readerVIew ;
}
[ self . view addSubview : readerVIew ];
// 扫描区域计算 : 加上该代码后似乎无法扫描出结果了
readerVIew . scanCrop = [ self getScanCrop :scanMaskRect readerViewBounds : readerVIew . bounds ];
[ readerVIew start ];
区域范围:
-(
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);
{
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);
}
ZBarReaderViewDelegate的方法:
- (
void
)readerView:(
ZBarReaderView
*)readerView didReadSymbols:(
ZBarSymbolSet
*)symbols fromImage:(
UIImage
*)image
{
NSString *codeData = [[ NSString alloc ] init ];
for ( ZBarSymbol *sym in symbols)
{
codeData = sym. data ;
break ;
}
// 可以获取到
UIAlertView *alert = [[ UIAlertView alloc ] initWithTitle : @" 扫描结果 " message :codeData delegate : self cancelButtonTitle : @"OK" otherButtonTitles : nil ];
alert. delegate = self ;
[alert show ];
[ readerVIew stop ];
{
NSString *codeData = [[ NSString alloc ] init ];
for ( ZBarSymbol *sym in symbols)
{
codeData = sym. data ;
break ;
}
// 可以获取到
UIAlertView *alert = [[ UIAlertView alloc ] initWithTitle : @" 扫描结果 " message :codeData delegate : self cancelButtonTitle : @"OK" otherButtonTitles : nil ];
alert. delegate = self ;
[alert show ];
[ readerVIew stop ];
}
打开获取到的信息:
- (
void
)alertView:(
UIAlertView
*)alertView clickedButtonAtIndex:(
NSInteger
)buttonIndex
{
[[ UIApplication sharedApplication ] openURL :[ NSURL URLWithString :alertView. message ]];
{
[[ UIApplication sharedApplication ] openURL :[ NSURL URLWithString :alertView. message ]];
}
6.使用libqrencode生成二维码
步骤一:首先向工程中导入第三方库libqrencode
步骤二:向QRCodeGenerator.h或者整个项目中引入框架
#import
,否则会报错
步骤三:在相应的文件中引入头文件
#import
"QRCodeGenerator.h"
步骤四:调用库中的方法生成图片(参数为字符串和图片大小)
UIImage
*image = [
QRCodeGenerator
qrImageForString
:
_label
.
text
imageSize
:
imageVIew
.
bounds
.
size
.
width
];
其他应用待进一步挖掘。