Is FirebaseMessagingService onMessageReceived called on main or background thread?
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Its called on the main thread – tyczj Nov 21 '17 at 18:50
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1@tyczj How do you know that? – Don Box Nov 21 '17 at 21:53
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@tyczj Do you have a link or anything? FirebaseMessagingService derives from Service so I really don't know what it is doing – Don Box Nov 21 '17 at 21:54
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1You seem to be wrong: https://stackoverflow.com/questions/41067081/does-firebasemessagingservice-run-in-the-background-by-default – Don Box Nov 21 '17 at 21:55
1 Answers
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It runs asynchronously with the main thread as it may take some time to download the message which can help in avoiding frozen activity for better user experience.
Rahul Mishra
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It's a `Service`, it runs on the service thread. `FirebaseMessagingService` has it's own process id. – Nikola Despotoski Nov 22 '17 at 00:59
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that still doesn't answer my question whether the `onMessageReceived` is called on main or background thread – Don Box Nov 22 '17 at 06:37
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As suggested by Nikola, onMessageRecieved is called by the service when the messge is received. And it runs on separate thread asynchronously which you are referring as background thread. – Rahul Mishra Nov 22 '17 at 08:03
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1@DonBox, checkout my answer here: https://stackoverflow.com/a/41067993/2371425 – Sakiboy Feb 21 '18 at 05:15
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Thanks @Sakiboy ! If you add an answer here I will mark it as solution – Don Box Feb 21 '18 at 11:07
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@DonBox, it’s alright, the other question/answer has been linked in here a couple times, so people will find it. I don’t want to spam or post duplicate answers. – Sakiboy Feb 21 '18 at 11:10