I'm trying to make an application with firebase (it's the first time I use android studio / gradle)
in firebase asks me to place this in build.gradle (app)
implementation 'com.google.firebase:firebase-core:16.0.3'
implementation 'com.google.firebase:firebase-messaging:17.3.2'
and at the end he asks me to place
apply plugin: 'com.google.gms.google-services'
When I put them in, this gives me an error:
implementation 'com.android.support:appcompat-v7:28.0.0'
only appears with a red line below, and try everything I found to investigate and I can not solve it, I hope someone can help me and thank you.