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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(169.60000000000002, 27%, 26%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJ%3C/text%3E%3C/svg%3E)
hi, I'm using Blazor with SignalR in a client / server environment. I'm able to send / receive real-time notifications. When I install the WPA client on an android OS , and I send a notification with SignalR , I do receive the message on the installed client, but on the desktop icon of the application I do not see the number typically shown when the app receives a new notification. How can I achieve this? Thanks in advance for any help ;-)
Kind regards
Jordi
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(259.20000000000005, 18%, 35%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EBB%3C/text%3E%3C/svg%3E)
Signal/r is websocket communications and is not part of android push notification services.
PWA apps do support push notifications services, and you can control the badge and notifications.
https://developer.mozilla.org/en-US/docs/Web/Progressive_web_apps/Re-engageable_Notifications_Push
hi Bruce,
thanks for your answer. Do you know if this functionality is in the roadmap or will be available to PWA soon ?
Is there a workaround, i.e. in order to show a different app icon (when installed on client PWA) , in order to emulate new notifications?
Thanks for your help ;-)
Kind regards
Jordi
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(211.20000000000002, 61%, 30%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EBS%3C/text%3E%3C/svg%3E)
On android, a PWA does support notifications. Your signal/r code should use the notification api to tell the o/s about the notification.
Also it seems if you wanted badge notifications, they should work when the PWA is not active. This requires using a service worker, which does not support signal/r. (As service worker run disconnected and signal/r runs connected, they are not compatible).
In short, if you want badge notifications, you should use push notifications not signal//r
hi Bruce,
thanks a lot for the explanation, I missed some stuff ;-)
Kind regards and have a nice day
Jordi