QrCodeScanner | A lib to aid you quickly achieve qrcode | QRCode Processing library
kandi X-RAY | QrCodeScanner Summary
kandi X-RAY | QrCodeScanner Summary
A lib to aid you quickly achieve qrcode scan
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QrCodeScanner Examples and Code Snippets
Community Discussions
Trending Discussions on QrCodeScanner
QUESTION
I am new to React-Native & created a QR Scanner App. After scanning want to open url onClick/onPress.
-- Here is the code
onSuccess = (e) => { setResult(e.data) setScan(false) }
// Start scanner startScan = () => { setScan(true) setResult() }
...ANSWER
Answered 2022-Apr-05 at 07:14Let me help you
Your code might look like this:
QUESTION
I am now using react-native-qrcode-scanner to read the QRcode but now have trouble when trying to add the text inside of the camera view. (Not top or bottom of the camera view but inside of it - more exactly under the marker position with align center)
...The text is not displayed even though I add Text field with position: 'absolute'
ANSWER
Answered 2021-Nov-15 at 16:41Following sample works for me on iOS:
QUESTION
If I add floating action button to the bottom bar in bottomnavigation as extended, the menu will be covered by location. If I'm set up in the center, you can see both menus. But if I leave it as end, you can only see one menu. When I set it to end, I want to see both menus.
Here is my code
...ANSWER
Answered 2021-Nov-12 at 07:18I think all you need is to just offset the FAB using the offset modifier. Here's an example:
QUESTION
I have a modal which opens up when I scan a qr Code. After this I set a props to true which tells my Responsemodal to open up. Problem is, I cannot close because this prop is read-only in child component.
Here is my code:
...ANSWER
Answered 2021-Sep-14 at 13:02You forgot add dependencies in useEffect
. Just add flag
to dependencies array to make sure it only call when flag change
QUESTION
I want to scan GS1 Databar Barcode which is also known as RSS Expanded barcode in IOS with react-native, I am using react-native-qrcode-scanner https://github.com/moaazsidat/react-native-qrcode-scanner to scan barcodes.
...ANSWER
Answered 2021-Apr-05 at 14:57No efficient open source solutions found for scanning GS1 Databar Expanded barcodes on iOS using React-Native.
Tried Zxingify-ObjC as a native module but the scanning is poor on newer iPhones (11 Pro, 12).
Tried react-native-barcode plugin. Doesn't support GS1 Databar plugin using the camera scanner, but does support scanning GS1 Databar from static images.
Finally went for a paid SDK: Cognex.
Hope this helps someone who runs into the same problem.
QUESTION
I implemented firebase MLKit to scan QRCode, it is scanning, but it is scanning all QRcode on screen. I need to scan only QRCode that are captured on the center (has arrow ImageView on the center), how can I do it?
I tried to crop on the Analisys function (inside analysisUseCase?.setAnalyzer)
imageProxy.cropRect()
I tried to crop on the processImageProxy function. But with no success, I think that I can't crop with this
...ANSWER
Answered 2021-Jan-19 at 19:00imageProxy.cropRect() only put a metadata in the image, but not do the cropping operation. For static image, you could convert to bitmap, and crop. A better way is to filter out the results when you have all the returned barcode with the detected barcode boundingbox.
Within MLKit, we are adding supports for image cropping.
QUESTION
i'm new in React Native and stuck to passing data to another page. in this case i want to sent data from QR Reader to another Page.
this is my code on first screen:
...ANSWER
Answered 2020-Oct-13 at 19:15if you are using react navigation 5
props.route.params
if older
props.navigation.state.params
it works when navigate with navigation.navigate('ScreenName', {params})
i am not sure about navigation.replace
QUESTION
I'm looking for a few days how I can read a QR code using ML Kit and CameraX. The process of the input image returns always a failure "IllegalStateException: Image is already closed". I have looked on different forums, but I can not find what I'm doing wrong. I think I'm following the Google documentation, but it won't work.
This is what I'm doing in my MainActivity:
- I create a textureView which shows me the input of my camera
- I start my camera (after checking the necessary rights)
- I setup a "preview" use case
- I setup a "Image Analysis" use case
- I set an analyzer which creates an InputImage which is passed to the Barcode scanner process
- Set my LifeCycle with the use cases "preview" and "image analysis"
I'm using CameraX version "1.0.0-alpha04" and "com.google.mlkit:barcode-scanning:16.0.3".
build.gradle
...ANSWER
Answered 2020-Oct-09 at 21:32I am not 100% sure whether this is related, but could you try updating your CameraX dependencies to the latest version? Yours is 1.0.0-alpha04, while the latest is 1.0.0-beta10. https://developer.android.com/jetpack/androidx/releases/camera
For the API you are using - setImageReaderMode(ImageAnalysis.ImageReaderMode.ACQUIRE_LATEST_IMAGE), I cannot find it any more on the CameraX dev site: https://developer.android.com/reference/androidx/camera/core/ImageAnalysis
As for .setImageQueueDepth(1), seems it doesn't work for the default strategy: https://developer.android.com/reference/androidx/camera/core/ImageAnalysis.Builder#setImageQueueDepth(int)
Another small suggestion: you currently create a new BarcodeDetector in each frame, which could be slow. Creating once outside the analyzer and reuse the same instance could be better.
Hope some of the points help :)
QUESTION
I use the library zxing-android-embedded in my Android App. Before calling initiateScan() method to start the scanner from my activity, I set a class variable scanedItemId to know on which item I clicked to scan.
My issue is that when the scanner activity finished, it goes back to my activity, but in a new instance and not the initial one (I checked with a break point in the onCreate method). So, my class variable is null. What can I do to keep my initial activity instance live and be sure the scanner goes back to it?
...ANSWER
Answered 2020-Jul-24 at 12:30You asked:
What can I do to keep my initial activity instance live and be sure the scanner goes back to it?
You can't. When your app goes to the background and the scanner app needs resources, Android will kill your app to make the resources available to the scanner app. This is normal and your app needs to be made robust enough to deal with this. If you need to keep track of your app's state so that you can continue when your app returns to the foreground, then you need to save that information somewhere persistent. You have choices:
- SharedPreferences
- SQLite database
- Use a file
- Implement
onSaveInstanceState()
QUESTION
I use the library zxing-android-embedded in my Android App. Before calling initiateScan() method to start the scanner from my activity, I set a class variable scanedItemId to know on which item I clicked to scan:
...ANSWER
Answered 2020-Jul-24 at 06:59You can add more custom data like this :
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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Install QrCodeScanner
You can use QrCodeScanner like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the QrCodeScanner component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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