Description:
i'm importing the onesignal in mt project and im getting this error :
Caused by: java.lang.NumberFormatException: For input string: " 12"
i'm using the last version
implementation 'com.onesignal:OneSignal:3.9.0'
and i'm also using :
classpath 'com.google.gms:google-services:3.3.1'
implementation 'com.google.android.gms:play-services-analytics:15.0.0'
implementation 'com.crashlytics.sdk.android:crashlytics:2.9.1'

@mjalijani com.google.gms:google-services:3.3.1 has a bug where it is not compatible with some projects.
This is noted in this open Google Issue
https://issuetracker.google.com/u/1/issues/79230924
OneSignal does not need this Gradle plugin so you can remove it if you don't need it for anything else. Or downgrade to 3.2.1.
Update (2018-05-29): Google released com.google.gms:google-services:4.0.1, updating to this version may also fix this issue but we have yet to confirm this
@mjalijani I am no long able to reproduce this issue with com.google.gms:google-services:4.0.1 so closing this issue.
Most helpful comment
@mjalijani
com.google.gms:google-services:3.3.1has a bug where it is not compatible with some projects.This is noted in this open Google Issue
https://issuetracker.google.com/u/1/issues/79230924
OneSignal does not need this Gradle plugin so you can remove it if you don't need it for anything else. Or downgrade to 3.2.1.
Update (2018-05-29): Google released
com.google.gms:google-services:4.0.1, updating to this version may also fix this issue but we have yet to confirm this