I'm trying to make api in the easyway with back4app but when I make an api key using console.developer.google.com and paste it I get this error
so how will I get a working api key for android apps?
The steps are described at this guide.
The keys to link your Firebase Project at Back4App are shown at the image below:
Copy the Server Key and paste it at the API Key field and do the same thing with the Sender ID, copy and paste it at the GCM Sender ID field.
:)