firebae

Jul 10, 2023

[Flutter/Dart] Unhandled Exception: PlatformException(sign_in_failed, com.google.android.gms....

Phenomenon When I try to sign in to Firebase with google_sign_in, it fails with the following error. Unhandled Exception:...

Mar 29, 2022

[Flutter/dart] When Firebase Messaging notification is tapped with the app is in the background

Overview In many cases, you'll send a message with Firebase Messaging and take some action when the notification is tapped (eg to go to a...

Mar 29, 2022

[Flutter/dart] null check operator used on a null value messaging

Overview A title error has occurred at FirebaseMessaging.onBackgroundMessage(). Cause and Solution The delegate passed to the argument of...

Mar 23, 2022

[Flutter/dart] Send a test message of Firebase Messaging

Overview When you use Firebase Messaging, you'll want to send a test to your device. It took a little time, so I will summarize how to do...

Jan 13, 2022

[Cloud Functions] Apply the same function to different firebase projects

Overview If you are using firebase in your smartphone app, you may use different firebase projects for development and production. If you...

Jan 13, 2022

[Node.js/cloud functions] Send mail from yahoo mail account with nodemailer

Overview In the smartphone app, I implemented a function that notifies me by e-mail when a certain type of data is posted using...