Android Question Sending info from a device to a server and forward to another device

[ValhallSW]

How can I send info from a device to a server and from the server to another device?
How can this be done in the simplest and easiest way? I am not a professional!

Is this what is called push-notifications?

 

[KMatle]

There are several examples (socket communication). For this you need to be able to run B4J apps on the server (= root server). Another way is to use Google https://www.b4x.com/android/forum/t...tification-c2dm-framework-and-tutorial.10542/

A third and most common way (because every cheap server supports it) is to use HttpUtils + php + MySql.

For all solutions you need some experience or fun to try There are several examples here. Just start simple (sending strings and send something back)

 

[inakigarm]

One more solution: MQTT clients (B4A,B4i, 4J) and MQTT server (B4J or external)

https://www.b4x.com/android/forum/threads/iot-mqtt-protocol.59471/#content

 

[ValhallSW]

There are several examples (socket communication). For this you need to be able to run B4J apps on the server (= root server). Another way is to use Google https://www.b4x.com/android/forum/t...tification-c2dm-framework-and-tutorial.10542/

A third and most common way (because every cheap server supports it) is to use HttpUtils + php + MySql.

For all solutions you need some experience or fun to try There are several examples here. Just start simple (sending strings and send something back)

Using the "HttpUtils + php + MySql", I know how to send info to server, and get a replay from server, but if I want to send edited info (edited by server) to another device?

Do the other device check constantly to see if there has been changes at server? I hope not.

 

[DonManfred]

There is no way to directly send a message to your device.
See
https://www.b4x.com/android/forum/t...ion-gcm-framework-and-tutorial.19226/#content
for a tutorial on how to send push-notifications.

Send a push notification to your device. the app receives the notification with a short info what to get...
Then use httputils from inside the app to get the desired data from your server.

 

[ValhallSW]

There is no way to directly send a message to your device.
See
https://www.b4x.com/android/forum/t...ion-gcm-framework-and-tutorial.19226/#content
for a tutorial on how to send push-notifications.

Send a push notification to your device. the app receives the notification with a short info what to get...
Then use httputils from inside the app to get the desired data from your server.

Thank you DonManfred, for clearing that up