android - Why do I need to add the configuration file to my project to setup gcm correctly? -


https://developers.google.com/cloud-messaging/android/client i've read article. , says need download , add configuration file project. not explain, why should this? won't work without adding configuration file?

i working on multiple gcm-projects still using eclipse, eclipse-adt-plugin , old project structure , did not include config-file projects. confused @ beginning , hence tried in android-studio project using gradle config file not necessary either.

so rémond´s answer might make sense me working fine (including generating instanceid-token , topic-messaging working).

so in fact, should work without adding file , not need file anyway.


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