使用ios ZBar SDK扫描静态UIImage

我想使用Zbar sdk扫描静态UIImage，它给出了错误，即ZBarSymbol是Null

我也查了一下

ZBarReaderController：UIImagePickerController

但因为它是UIImagePickerController的子类，我根本不想使用UIImagePickerController，因为我只想扫描我在我的应用程序中引用的UIImage ..我搜索了这个问题，但没有得到任何帮助..

我也尝试过ZBarImageScanner，

- (void) scanFromUIImage: (UIImage *)img{ // setup scaner ZBarImageScanner *scanner = [[ZBarImageScanner alloc] init]; Settings *settings = [Settings globalSettings]; //ZBarImageScanner *scanner = reader.scanner; BOOL haveLongLinear = NO; for(NSString *str in settings.enabledSymbologies) { NSNumber *value = [settings.enabledSymbologies objectForKey: str]; BOOL enable = value.boolValue; zbar_symbol_type_t sym = [str integerValue]; [scanner setSymbology: sym config: ZBAR_CFG_ENABLE to: enable]; if(sym == ZBAR_EAN13) { // show EAN variants as such [scanner setSymbology: ZBAR_UPCA config: ZBAR_CFG_ENABLE to: enable]; [scanner setSymbology: ZBAR_UPCE config: ZBAR_CFG_ENABLE to: enable]; [scanner setSymbology: ZBAR_ISBN13 config: ZBAR_CFG_ENABLE to: enable]; } haveLongLinear |= enable && sym > ZBAR_COMPOSITE && sym != ZBAR_QRCODE; } ZBarImage *zbimg = [[ZBarImage alloc] initWithCGImage:img.CGImage]; UIImage *image = screenShot; id  results = [scanner scanImage:zbimg]; //NSLog(@"-------> %@",results); ZBarSymbol *sym = nil; for(sym in results) break; assert(sym); assert(image); if(!sym || !image) return; Barcode *barcode = [NSEntityDescription insertNewObjectForEntityForName: @"Barcode" inManagedObjectContext: context]; assert(barcode); if(!barcode) return; assert(currentFolder); // wana save safari screen shot to Safari Folder Folder *folder = nil; folder = [Folder defaultFolderInContext: context]; if(folder != currentFolder) { [currentFolder release]; currentFolder = [folder retain]; } barcode.folder = currentFolder; barcode.date = [NSDate date]; barcode.image = image; barcode.symbol = sym; barcode.type = [NSNumber numberWithInteger: sym.type]; barcode.data = sym.data; barcode.name = nil; barcode.thumb = nil; NSArray *stack = nav.viewControllers; BarcodeListController *_list = nil; if(stack.count > 1) { _list = [stack objectAtIndex: 1]; if(![_list isKindOfClass: [BarcodeListController class]] || _list.folder != currentFolder) _list = nil; } if(_list) [nav popToViewController: _list animated: NO]; else { [nav popToRootViewControllerAnimated: NO]; _list = [[[BarcodeListController alloc] initWithFolder: currentFolder] autorelease]; [nav pushViewController: _list animated: NO]; } UIViewController *detail = [[BarcodeDetailController alloc] initWithBarcode: barcode]; [nav pushViewController: detail animated: NO]; [detail release]; if(settings.autoLink) [self performSelector: @selector(autoLink:) withObject: barcode afterDelay: 0.25]; [window.rootViewController adDismissModalViewController:self.safari animated: YES]; [self performSelector: @selector(genThumb:) withObject: barcode afterDelay: .5]; } 

Answer 1

Baig精彩解决方案的精简版。 将ZBAR_I25更改为所需的代码格式。

 - (NSString *)findQRCode:(UIImage *)inputUIImage { ZBarReaderController *imageReader = [ZBarReaderController new]; [imageReader.scanner setSymbology: ZBAR_I25 config: ZBAR_CFG_ENABLE to: 0]; id  results = [imageReader scanImage:inputUIImage.CGImage]; ZBarSymbol *sym = nil; for(sym in results) { break; } // Get only last symbol if (!sym) { NSLog(@"No barcode found"); return nil; } NSLog(@"Found barcode! quality: %d string: %@", sym.quality, sym.data); return sym.data; } 

Answer 2

有解决方案：

 - (NSString *)scanForQR:(UIImage *)image { ZBarReaderController *imageReader = [ZBarReaderController new]; [imageReader.scanner setSymbology: ZBAR_I25 config: ZBAR_CFG_ENABLE to: 0]; id  results = [imageReader scanImage:image.CGImage]; ZBarSymbol *sym = nil; for(sym in results) { break; } // Get only last symbol if (!sym) { NSLog(@"No barcode found"); return nil; } NSLog(@"Found barcode! quality: %d string: %@", sym.quality, sym.data); return sym.data; }