Failed resolving dependencies due to OneSignal

Question

I found the following question: Failed to resolve: com.android.support:customtabs:[26.0.0,26.1.0] People marked it as duplicate (which is wrong ! see next sentence) or wrote som

Answer 1

The error happens because you have some conflicted library in your dependency.

As in the documentation, it says:

Automatic Dependencies
OneSignal automatically adds the following dependencies;

• com.google.android.gms - Version 11
• com.android.support - Version 26

Please makes sure your project matches these versions if you run into a mismatch version error.

For more details see the All gms/firesbase libraries must use the exact same version specification section.

So, you need to remove or use the same dependencies in your project, something like this:

compile 'com.android.support:appcompat-v7:26.0.+'
compile 'com.android.support.constraint:constraint-layout:1.0.2'
compile 'com.google.firebase:firebase-auth:11.0.+'
compile 'com.google.firebase:firebase-database:11.0.+'
compile 'com.firebaseui:firebase-ui-database:1.1.0'
compile 'com.android.support:design:26.0.+'
compile 'com.onesignal:OneSignal:[3.6.0, 3.99.99]'