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🔎 A simple and beautiful barcode scanner.
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plangrid/BarcodeScanner
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BarcodeScanner is a simple and beautiful wrapper around the camera withbarcode capturing functionality and a great user experience.
- Barcode scanning.
- State modes: scanning, processing, unauthorized, not found.
- Handling of camera authorization status.
- Animated focus view and custom loading indicator.
- Torch mode switch.
- Customizable colors, informational and error messages.
- No external dependencies.
- Demo project.
To start capturing just instantiateBarcodeScannerViewController, set neededdelegates and present it:
letviewController=BarcodeScannerViewController()viewController.codeDelegate=selfviewController.errorDelegate=selfviewController.dismissalDelegate=selfpresent(viewController, animated:true, completion:nil)
You can also pushBarcodeScannerViewController to your navigation stack:
letviewController=BarcodeScannerViewController()viewController.codeDelegate=selfnavigationController?.pushViewController(viewController, animated:true)
Code delegate
UseBarcodeScannerCodeDelegate when you want to get the captured code back.
extensionViewController:BarcodeScannerCodeDelegate{func scanner(_ controller:BarcodeScannerViewController, didCaptureCode code:String, type:String){print(code) controller.reset()}}
Error delegate
UseBarcodeScannerErrorDelegate when you want to handle session errors.
extensionViewController:BarcodeScannerErrorDelegate{func scanner(_ controller:BarcodeScannerViewController, didReceiveError error:Error){print(error)}}
Dismissal delegate
UseBarcodeScannerDismissalDelegate to handle "Close button" tap.Please note thatBarcodeScannerViewController doesn't dismiss itself ifit was presented initially.
extensionViewController:BarcodeScannerDismissalDelegate{func scannerDidDismiss(_ controller:BarcodeScannerViewController){ controller.dismiss(animated:true, completion:nil)}}
When the code is capturedBarcodeScannerViewController switches to the processingmode:
While the user sees a nice loading animation you can perform somebackground task, for example make a network request to fetch product info basedon the code. When the task is done you have 3 options to proceed:
- Dismiss
BarcodeScannerViewControllerand show your results.
func scanner(_ controller:BarcodeScannerViewController, didCaptureCode code:String, type:String){ // Code processing controller.dismiss(animated:true, completion:nil)}
- Show an error message and switch back to the scanning mode (for example,when there is no product found with a given barcode in your database):
func scanner(_ controller:BarcodeScannerViewController, didCaptureCode code:String, type:String){ // Code processing controller.resetWithError(message:"Error message") // If message is not provided the default message will be used instead.}
- Reset the controller to the scanning mode (with or without animation):
func scanner(_ controller:BarcodeScannerViewController, didCaptureCode code:String, type:String){ // Code processing controller.reset(animated:true)}
If you want to do continuous barcode scanning just set theisOneTimeSearchproperty on yourBarcodeScannerViewController instance tofalse.
We styledBarcodeScanner to make it look nice, but you can always use publicproperties or inheritance to customize its appearance.
Header
letviewController=BarcodeScannerViewController()viewController.headerViewController.titleLabel.text="Scan barcode"viewController.headerViewController.closeButton.tintColor=.red
Please note thatHeaderViewController is visible only whenBarcodeScannerViewController is being presented.
Footer and messages
letviewController=BarcodeScannerViewController()viewController.messageViewController.regularTintColor=.blackviewController.messageViewController.errorTintColor=.redviewController.messageViewController.textLabel.textColor=.black
Camera
letviewController=BarcodeScannerViewController()// Change focus view styleviewController.cameraViewController.barCodeFocusViewType=.animated// Show camera position buttonviewController.cameraViewController.showsCameraButton=true// Set settings button textlettitle=NSAttributedString( string:"Settings", attributes:[.font:UIFont.boldSystemFont(ofSize:17),.foregroundColor:UIColor.white])viewController.cameraViewController.settingButton.setAttributedTitle(title, for:UIControlState())
Metadata
// Add extra metadata object typeletviewController=BarcodeScannerViewController()viewController.metadata.append(AVMetadataObject.ObjectType.qr)
BarcodeScanner is available throughCocoaPods. To installit, simply add the following line to your Podfile:
pod'BarcodeScanner'
Don't forget to set aPrivacy - Camera Usage Description in your Info.plist file, else the app will crash with a SIGBART.
In order to quickly try the demo project of aBarcodeScanner just runpod try BarcodeScanner in your terminal.
BarcodeScanner is also available throughCarthage.To install just write into your Cartfile:
github"hyperoslo/BarcodeScanner"
To installBarcodeScanner manually just download and dropSources andImages folders in your project.
Hyper Interaktiv AS,ios@hyper.no
We would love you to contribute toBarcodeScanner, check theCONTRIBUTING file for more info.
BarcodeScanner is available under the MIT license. See theLICENSE file for more info.
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🔎 A simple and beautiful barcode scanner.
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