Build failing after migrating to OneSignal 2.0.0

[getmmg]

Description:
Unable to run flutter project after migrating to flutter 2.0.0

Environment

Steps to Reproduce Issue:

1. Follow the migration guide for onesignal 2.0.0
2. Then run the flutter project flutter run you will see the build failing

Anything else:

C:\flutter\.pub-cache\hosted\pub.dartlang.org\onesignal_flutter-2.0.0\android\src\main\java\com\onesignal\flutter\FlutterRegistrarResponder.java:4: error: package android.support.annotation does not exist import android.support.annotation.NonNull; ^ C:\flutter\.pub-cache\hosted\pub.dartlang.org\onesignal_flutter-2.0.0\android\src\main\java\com\onesignal\flutter\OneSignalPlugin.java:4: error: package android.support.annotation does not exist import android.support.annotation.NonNull; ^ C:\flutter\.pub-cache\hosted\pub.dartlang.org\onesignal_flutter-2.0.0\android\src\main\java\com\onesignal\flutter\OneSignalTagsController.java:3: error: package android.support.annotation does not exist import android.support.annotation.NonNull; ^
C:\flutter\.pub-cache\hosted\pub.dartlang.org\onesignal_flutter-2.0.0\android\src\main\java\com\onesignal\flutter\FlutterRegistrarResponder.java:57: error: cannot find symbol protected void runOnMainThread(@NonNull final Runnable runnable) { ^ symbol: class NonNull location: class FlutterRegistrarResponder C:\flutter\.pub-cache\hosted\pub.dartlang.org\onesignal_flutter-2.0.0\android\src\main\java\com\onesignal\flutter\FlutterRegistrarResponder.java:61: error: cannot find symbol protected void invokeMethodOnUiThread(@NonNull final String methodName, @NonNull final HashMap map) { ^
symbol: class NonNull location: class FlutterRegistrarResponder C:\flutter\.pub-cache\hosted\pub.dartlang.org\onesignal_flutter-2.0.0\android\src\main\java\com\onesignal\flutter\FlutterRegistrarResponder.java:61: error: cannot find symbol protected void invokeMethodOnUiThread(@NonNull final String methodName, @NonNull final HashMap map) { ^ symbol: class NonNull location: class FlutterRegistrarResponder C:\flutter\.pub-cache\hosted\pub.dartlang.org\onesignal_flutter-2.0.0\android\src\main\java\com\onesignal\flutter\OneSignalPlugin.java:69: error: cannot find symbol public void onMethodCall(@NonNull MethodCall call, @NonNull Result result) { ^ symbol: class NonNull location: class OneSignalPlugin C:\flutter\.pub-cache\hosted\pub.dartlang.org\onesignal_flutter-2.0.0\android\src\main\java\com\onesignal\flutter\OneSignalPlugin.java:69: error: cannot find symbol public void onMethodCall(@NonNull MethodCall call, @NonNull Result result) { ^ symbol: class NonNull location: class OneSignalPlugin C:\flutter\.pub-cache\hosted\pub.dartlang.org\onesignal_flutter-2.0.0\android\src\main\java\com\onesignal\flutter\OneSignalTagsController.java:34: error: cannot find symbol @NonNull private AtomicBoolean replySubmitted = new AtomicBoolean(false); ^ symbol: class NonNull location: class OSFlutterChangeTagsHandler C:\flutter\.pub-cache\hosted\pub.dartlang.org\onesignal_flutter-2.0.0\android\src\main\java\com\onesignal\flutter\OneSignalTagsController.java:87: error: cannot find symbol public void onMethodCall(@NonNull MethodCall call, @NonNull Result result) { ^ symbol: class NonNull location: class OneSignalTagsController C:\flutter\.pub-cache\hosted\pub.dartlang.org\onesignal_flutter-2.0.0\android\src\main\java\com\onesignal\flutter\OneSignalTagsController.java:87: error: cannot find symbol public void onMethodCall(@NonNull MethodCall call, @NonNull Result result) { ^
symbol: class NonNull location: class OneSignalTagsController Note: Some input files use unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details.
11 errors Running Gradle task 'assembleDebug'... Running Gradle task 'assembleDebug'... Done 39.2s

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The Gradle failure may have been because of AndroidX incompatibilities in this Flutter app.
See https://goo.gl/CP92wY for more information on the problem and how to fix it.

---

Gradle task assembleDebug failed with exit code 1

I have already migrated by project to androidx
These are the lines from my gradle.properties file

org.gradle.jvmargs=-Xmx1536M extra-gen-snapshot-options=--obfuscate android.useAndroidX=true android.enableJetifier=true

Also tried running after running flutter clean but no success

[getmmg]

commenting the below 2 lines is building sucessfully, I am closing the issue for now, however onesignal should consider migrating to AndroidX annotation library.

android.useAndroidX=true
android.enableJetifier=true

[getmmg]

flutter build appbundle fails If I remove the useAndroidX and enableJetifier lines. I was able to fix it by importing the androidx equivalent.

Replace import android.support.annotation.NonNull; with import androidx.annotation.NonNull; in all the applicable .java files inside <flutter_path>.pub-cache\hosted\pub.dartlang.org\onesignal_flutter-2.0.0\android\src\main\java\com\onesignal\flutter\

[dukaric1991]

That fixed it for me:

"Replace import android.support.annotation.NonNull; with import androidx.annotation.NonNull;"

i hope it will be updated by OneSignal team in the next update.

[leonardohklaus]

After I did this, my app not running more.

[leonardohklaus]

Solved. I delete the build folder, run on prompt "flutter clean" and voilà

[fahjan]

@leonardohklaus I faced the same issue but still not working

[jkasten2]

Thanks for reporting this! Issue is now fixed in the just released 2.0.1 version.
https://github.com/OneSignal/OneSignal-Flutter-SDK/releases/tag/2.0.1