Skip to main content

Integrate Barcode into React Native mobile app

On OC Copier mobile app, we have integrated QR Code into Contact Form, so contact info will automatically fill in when barcode is being scanned.

To generate QR Code, we are using
https://www.the-qrcode-generator.com

Expo

BarCodeScanner

https://docs.expo.io/versions/latest/sdk/bar-code-scanner/



* feature: SendGrid provides service to send email notification
https://sendgrid.com/

see pricing:

Free

Try it out! Send 40,000 emails for 30 days, then 100/day forever.

Comments

Post a Comment

Popular posts from this blog

fs.writeFile - permission issue on GCP (Google Cloud Run)

error on this: fs . writeFile ( fileName , pdfBytes , err => { if ( err ) { console . log ( err . message ) reject ( err . message ) } else resolve ( fileName ) }) #1 It looks like when deployed into Cloud Run it also requires the extra permission "Service Account Token Creator" to run  getSignedUrl . Locally for some reason this role is not required. #2 Only the directory  /tmp  is writable in Cloud Run. So, change the default write location to write into this directory. However, you have to be aware of 2 things: Cloud Run is stateless, that means when a new instance is created, the container start from scratch, with an empty  /tmp  directory /tmp  directory is an in-memory file system. The maximum allowed memory on Cloud Run is 2Gb, your app memory footprint included. In addition of your file and Airflow, not sure that you will have a lot of space. A final remark. Cloud Run is active only when it...
Post a Comment
Read more

A component is changing an uncontrolled input of type text to be controlled error in ReactJS - Formik

 https://stackoverflow.com/questions/47012169/a-component-is-changing-an-uncontrolled-input-of-type-text-to-be-controlled-erro default value can't be undefined  case 'listingBrokerOfficeName' : value = ( listingBroker || {}). officeName break change to: case 'listingBrokerOfficeName' : value = ( listingBroker || {}). officeName || '' break
Post a Comment
Read more

renew token on graphQL error - apollo client with Firebase authentication

const errorLink = onError( ( { graphQLErrors, networkError, operation, forward } ) => {  https://able.bio/AnasT/apollo-graphql-async-access-token-refresh--470t1c8 apollo client with Firebase authentication https://dgraph.io/docs/graphql/todo-app-tutorial/todo-firebase-jwt/ Concurrent Requests https://able.bio/AnasT/apollo-graphql-async-access-token-refresh--470t1c8 const errorLink = onError( ( { graphQLErrors, networkError, operation, forward } ) => { if (graphQLErrors) { for ( let err of graphQLErrors) { switch (err.extensions.code) { case 'UNAUTHENTICATED' : // error code is set to UNAUTHENTICATED // when AuthenticationError thrown in resolver let forward$; if (!isRefreshing) { isRefreshing = true ; forward$ = fromPromise( getNewToken() .then( ( { accessToken, refreshToken } ) => { // Store t...
Post a Comment
Read more