2. Takuma Lee@Android Study Group
vmgsahm1@gmail.com
Individual App Developer@MangaChat
Today’s source code
https://github.com/TakumaMochizuki/FcmD2D
Download APK: http://bit.ly/2d75nfx
Licensed under the Charlie Tsai
4. FCM InstanceID Token
• Access the device registration token
• On initial startup of your app, the FCM SDK generates a registration token
for the client app instance.
• If you want to target single devices or create device groups, you'll need to
access this token by extending FirebaseInstanceIdService.
5. FCM InstanceID Token
• The registration token may change when
• The app deletes Instance ID
• The app is restored on a new device
• The user uninstalls/reinstall the app
• The user clears app data.
10. GCM Parameter
A message request is made of 2 parts: HTTP header and HTTP body.
The HTTP header must contain the following headers:
• Server Key
• Header -> Authorization: key=YOUR_SERVER_KEY (Authorization, key=Azlxxxxxx…ic)
• Header -> Content-Type: application/json (for JSON)
• Header -> application/x-www-form-urlencoded;charset=UTF-8 (for plain text.)
• Request Url
• https://fcm.googleapis.com/fcm/send
https://developers.google.com/cloud-messaging/http
11. Server Key
Step #1: Log into https://cloud.google.com/console with your Google account
Step #2: In the navigation on the left, go into "APIs & auth > APIs"
Step #3: Find "Google Cloud Messaging for Android" and open this service.
Step #4: In the navigation on the left, go into "APIs & auth > Credentials
Step #5: You can see the Server key (auto created by google service)
Step #6: Copy your key
