![[Solved] Flutter/Dart - FlutterFirebaseMessagingPlugin.java - Build fails with Exception “error: cannot find symbol”](https://fluttercorner.com/wp-content/uploads/2021/05/FlutterCornerMask-3.jpg)
Hello Guys How are you all? Hope You all are fine. When I was trying to run my flutter app and suddenly I get the following error in my stack track. Flutter/Dart – FlutterFirebaseMessagingPlugin.java – Build fails with Exception “error: cannot find symbol” in flutter. So today Here I come with all possible solutions for this error.
We are providing you all possible solutions to solve this error. let’s start this article without wasting your time.
Table of Contents
How Flutter/Dart – FlutterFirebaseMessagingPlugin.java – Build fails with Exception “error: cannot find symbol” Error Occurs ?
Today I updated to Null Safety sdk: ">=2.12.0 <3.0.0" I’m getting errors when I try to build my Flutter app in Android Studio.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 | C:\admin\flutter\.pub-cache\hosted\pub.dartlang.org\firebase_messaging-9.1.4\android\src\main\java\io\admin\flutter\plugins\firebase\messaging\FlutterFirebaseMessagingPlugin.java:20: error: cannot find symbol import com.google.firebase.iid.FirebaseInstanceId; ^ symbol: class FirebaseInstanceId location: package com.google.firebase.iid C:\admin\flutter\.pub-cache\hosted\pub.dartlang.org\firebase_messaging-9.1.4\android\src\main\java\io\admin\flutter\plugins\firebase\messaging\FlutterFirebaseMessagingPlugin.java:21: error: cannot find symbol import com.google.firebase.iid.Metadata; ^ symbol: class Metadata location: package com.google.firebase.iid C:\admin\flutter\.pub-cache\hosted\pub.dartlang.org\firebase_messaging-9.1.4\android\src\main\java\io\admin\flutter\plugins\firebase\messaging\FlutterFirebaseMessagingPlugin.java:152: error: cannot find symbol : Metadata.getDefaultSenderId(FirebaseApp.getInstance()); ^ symbol: variable Metadata location: class FlutterFirebaseMessagingPlugin C:\admin\flutter\.pub-cache\hosted\pub.dartlang.org\firebase_messaging-9.1.4\android\src\main\java\io\admin\flutter\plugins\firebase\messaging\FlutterFirebaseMessagingPlugin.java:153: error: cannot find symbol FirebaseInstanceId.getInstance().deleteToken(senderId, "*"); ^ symbol: variable FirebaseInstanceId location: class FlutterFirebaseMessagingPlugin C:\admin\flutter\.pub-cache\hosted\pub.dartlang.org\firebase_messaging-9.1.4\android\src\main\java\io\admin\flutter\plugins\firebase\messaging\FlutterFirebaseMessagingPlugin.java:165: error: cannot find symbol : Metadata.getDefaultSenderId(FirebaseApp.getInstance()); ^ symbol: variable Metadata location: class FlutterFirebaseMessagingPlugin C:\admin\flutter\.pub-cache\hosted\pub.dartlang.org\firebase_messaging-9.1.4\android\src\main\java\io\admin\flutter\plugins\firebase\messaging\FlutterFirebaseMessagingPlugin.java:166: error: cannot find symbol String token = FirebaseInstanceId.getInstance().getToken(senderId, "*"); ^ symbol: variable FirebaseInstanceId location: class FlutterFirebaseMessagingPlugin |
Inshort error saying FlutterFirebaseMessagingPlugin.java “cannot find symbol”. So what does this mean and how do I fix it.
How to Solve Flutter/Dart – FlutterFirebaseMessagingPlugin.java – Build fails with Exception “error: cannot find symbol” Error?
Question: How to Solve Flutter/Dart – FlutterFirebaseMessagingPlugin.java – Build fails with Exception “error: cannot find symbol” Error?
Answer: To resolve this issue just Open pubspec.yaml file. Get the latest version of firebase_messaging from here. Updated to the latest version. Then flutter pub get. That’s all.
Solution 1
As I updated my SDK version to null safety all we need to do is just Update your firebase_messaging in pusbpec.yaml to version that supports null-safety (for example: firebase_messaging: ^10.0.0, and call flutter pub get from terminal
- Open pubspec.yaml file.
- Get the latest version of firebase_messaging from here.
- Updated to latest verison.
- Then flutter pub get.
- That’s all.
Solution 2
First, get the latest versions of your firebase dependencies from pub.dev
Run the commands:
1 2 3 | flutter pub upgrade flutter pub get flutter clean |
Invalidate caches and restart
and then try running the app
Summery
So, It’s All About Flutter/Dart – FlutterFirebaseMessagingPlugin.java – Build fails with Exception “error: cannot find symbol”. I hope this tutorial helps you to solve your error. Please Comment Below if You stucks anywhere with my code.
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Very very very thank you bro!