code-scanner | Code scanner library for Android | Barcode Processing library
kandi X-RAY | code-scanner Summary
kandi X-RAY | code-scanner Summary
Code scanner library for Android, based on ZXing.
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Top functions reviewed by kandi - BETA
- Initializes the view
- Sets the icon on auto focus
- Set button icon on Flash
- Set the autoFocus button on icon
- Performs a touch event on the screen
- Fit this rectangle in the specified area
- Perform a touch focus
- Enable auto - focus or disable auto focus
- Decodes image
- Calculates the width and height of an image frame
- Rotate a byte array
- Enable or disable flash light
- Sets the flash mode
- Sets the image layout
- Layout a button
- Sets the code scanner
- Releases resources used by this object
- Sets the zoom value
- Finds an available camera preview size
- Rotate this rectangle around the specified angle
- Measure view
- Cancels auto focus camera
- Performs the background drawing
- Bound the rectangle s bounds
- Set camera
- Start camera preview
code-scanner Key Features
code-scanner Examples and Code Snippets
Community Discussions
Trending Discussions on code-scanner
QUESTION
I upgraded angular to angular 13 and cannot get my project to build or serve. It appears that Angular isn't recognizing any of my ionic tags in the .html files. What am I missing?
I am able to run npm install without issues. I have deleted the node_modules and package-lock.json files, removed the platform and then run npm install and added the platform back. That is successful, but running ionic serve or ionic cordova build android results in a whole stream of errors that looks like angular isn't seeing the ionic html tags and there are new errors with Promises and more.
This is what I get when I run Ionic info:
my package.json....
...ANSWER
Answered 2022-Mar-23 at 17:38Figured out what the issue was. MicrosoftSDK had TypeScript 3.1 and first when running "where tsc". I moved the npm directory up in the Environmental Variables. Then I removed Angular and reinstalled it.
QUESTION
I have recently upgraded my app from SDK 40 to SDK 44 and came across this error App.js: [BABEL]: Unexpected token '.' (While processing: /Users/user/path/to/project/node_modules/babel-preset-expo/index.js)
Error Stack Trace:
...ANSWER
Answered 2021-Dec-21 at 05:52can you give your
- package.json
- node version
I think that's because of the babel issue / your node version, because it cannot transpile the optional chaining https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Optional_chaining
maybe tried using latest LTS node version? because as far as I know, the latest LTS node version already support optional chaining
QUESTION
Expo BarcodeScanner works only the first time when I post data to my server on barcode scanned
...ANSWER
Answered 2022-Jan-22 at 13:33How about toggling some kind of waiting period while the data is actually getting sent to your server via the POST in a synchronous matter to stop the scan and then reactivate it right after?
I don't have the chance to test it on an actual device and replicate it to the precise bit but I hope you'll get the gist of it:
QUESTION
Because of Google Play, I had to update an old project of mine to the latest expo versions (version 43.0.0 to be exact). The idea is for the app to scan a QRCode and process the data, simply. However, expo-barcode-scanner only works once and after that I need to close and open the app again to work. Has anyone encountered this problem and (or) knows how to solve it? Below is my code:
...ANSWER
Answered 2021-Nov-12 at 21:14Welcome @Backup Gov18,
This is a documented issue.
Note: Only one active BarCodeScanner preview is supported currently. When using navigation, the best practice is to unmount any previously rendered BarCodeScanner component so the following screens can use without issues.
There is a workaround.
Instead of conditionally rendering the component, you could render it inside another dedicated screen component.
This way, after this new screen reads the barcode, you could navigate back to your first screen. Navigating back may unmount this new screen. You can force unmount if you need to.
As you are using react-navigation
, you had better use .pop()
instead of goBack()
.
You can also use expo-camera
instead of expo-barcode-scanner
. expo-camera
does not have this issue. It also offers more options like flashlight/torch and switching cameras.
QUESTION
I'm new to react native, this is an application that scans Qr codes I want to have two buttons one that scans again and one that redirects to a new screen called 'List' with the QR code data. However after scanning the QR code and every time i press the scan again or result button the expo application crashes this is my code:
...ANSWER
Answered 2022-Jan-07 at 10:15in your code MyBackButton not just a function, it return a view -> crash.
Fix your func MyBackButton =>
QUESTION
I want to scan the qr code using this package react-native-qrcode-scanner, I am following this tutorial https://enappd.com/blog/react-native-qr-code-scanning-using-react-native-camera/117/ In the tutorial, the camera permission is given through manifest file, however I don't have this file in my expo project. I tried to add "permissions": ["CAMERA"] to app.json file but it didn't work so How can I add camera permission?
...ANSWER
Answered 2021-Dec-31 at 11:34Is there a specific reason you want to use that particular library, or are you using it simply because it is what is covered in the tutorial?
Expo has a barcode scanner library that will perform QR code scanning, here is the documentation: https://docs.expo.dev/versions/latest/sdk/bar-code-scanner/. This library can be used in the managed workflow (which you are using by the sounds of things) and the documentation is pretty straight forward.
Having looked at the library that you want to use, it will require linking which means you will have to eject your project to access the necessary files required for that - if there isn't any particularly requirement for you to use this library specifically, I would suggest steering clear of ejecting if it can be avoided.
QUESTION
I am experiencing difficulty writing tests for react-native typescript screen using instructions from the URL below https://react-native-async-storage.github.io/async-storage/docs/advanced/jest/
I keep getting the below error
FAIL app/screens/login/login-screen.test.tsx ● Test suite failed to run
...ANSWER
Answered 2021-Dec-06 at 15:23Based on your package.json dependencies you dont have the @react-native-async-storage
dependency, you have @react-native-community/async-storage
, which is the old organisation namespace.
Try doing
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
So im getting a task by its id
, im scanning a barcode i get the id and i get the data
of the task, but for some reason i cant setLocation
to resultData
. Location, when i log resultData
i get all the data of the task, when i log resultData.location
i get the location object, but when i want to setLocation(resultData.location)
i just get an empty object logged - note in use state default state
is {}, if i just set the default state to nothing it returns undefined in the console.
ANSWER
Answered 2021-Nov-01 at 16:16The real reason is the execution of setState
is asynchronous. So when you console.log
the state
just after receiving the api response, You can not see the updated state
immediately. For more detail explanation, you can checkout this post.
It seems you need the location
variable in distance
function only, so just return the location
in loadTask
function and pass it to the distance
function is fine.
QUESTION
I am trying to put a recaptcha in my app, but I can't. I have followed the tutorial from the library (https://www.npmjs.com/package/ng-recaptcha/v/4.1.0). I don't understand what I'm doing wrong. I've searched forums for similar questions, but can't find any solutions. Thanks
Error:
...ANSWER
Answered 2021-Oct-18 at 10:05You just to do import RecaptchaModule where your LoginPage component is imported.
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Install code-scanner
You can use code-scanner 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 code-scanner 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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