zxing扫描条形码 ios

在ios中使用zxing扫描条形码：

1.在- (IBAction)scanPressed:(id)sender方法中：

ZXingWidgetController *widController = [[ZXingWidgetController alloc] initWithDelegate:self showCancel:YES OneDMode:YES];

MultiFormatOneDReader *OneReaders=[[MultiFormatOneDReader alloc]init];
QRCodeReader* qrcodeReader = [[QRCodeReader alloc] init];
NSSet *readers = [[NSSet alloc ] initWithObjects:OneReaders,qrcodeReader,nil];

[qrcodeReader release];

[OneReaders release];

2.在ZXingWidgetController.m的 (void)captureOutput:(AVCaptureOutput *)captureOutput :方法中，注释掉以下方法

if (oneDMode) {
// let's just give the decoder a vertical band right above the red line
cropRect.origin.x = cropRect.origin.x + (cropRect.size.width / 2) - (ONE_D_BAND_HEIGHT + 1);
cropRect.size.width = ONE_D_BAND_HEIGHT;

// do a rotate
CGImageRef croppedImg = CGImageCreateWithImageInRect(capture, cropRect);
capture = [self CGImageRotated90:croppedImg];
capture = [self CGImageRotated180:capture];
CGImageRelease(croppedImg);
cropRect.origin.x = 0.0;
cropRect.origin.y = 0.0;

cropRect.size.width = CGImageGetWidth(capture); cropRect.size.height = CGImageGetHeight(capture); }

4、将以下的代码替换：

UIImage *scrn = [[UIImage alloc] initWithCGImage:newImage];

改为:

int backCameraImageOrientation = UIImageOrientationRight;
UIImage *scrn = [[UIImage alloc] initWithCGImage:newImage scale:
(CGFloat)1.0 orientation:backCameraImageOrientation];

5、在OverlayView.m注释代码以下代码：

self.oneDMode = isOneDModeEnabled;

SCANNER for Portrait mode更多了解，参考一下文档：http://groups.google.com/group/zxing/browse_thread/thread/cfe2324e8baf2aaa

 参考：http://code.google.com/p/zxing/issues/detail?id=571

PS：谁如果已经解决了5.0用zxing扫描条形码的问题，弄出来给大家看下

http://shopsavvy.mobi/developers/  扫描库，没用过不知道效果如何

注，如果是itouch的话，可能会因为分辨率低的问题（以前一直因为是5.0的系统影响），不能解码，我以前为这个事情纠结了好长时间，刚刚买了iphone，是5.0的系统一切正常。

转载地址:http://blog.sina.com.cn/s/blog_6dae58b30100xz7e.html