Android Question MQTT Raspberry Pi

rafie dandamun · Sep 4, 2017

I have a python script in raspberry that output a temperature(TMP007) and it has a MQTT to send to Android App but I dont know to do it. Can anyone help me with my problem?
Is my python code compatible with my android app?

Erel · Sep 5, 2017

The MQTT event is:

B4X:

MessageArrived (Topic As String, Payload() As Byte)

You cannot change the payload type. You can use ByteConverter to convert bytes to other types.

rafie dandamun · Sep 5, 2017

Erel said:
You cannot change the payload type. You can use ByteConverter to convert bytes to other types.

thanks for replying. can you give me a sample for using the byteconverter? I want to get it as a integer

Erel · Sep 5, 2017

There are many examples using ByteConverter: https://www.b4x.com/android/forum/pages/results/?query=ByteConverter

rafie dandamun · Sep 6, 2017

Erel said:
Payload()

is this payload() an array of bytes?

Erel · Sep 6, 2017

rafie dandamun · Sep 6, 2017

Erel said:
Yes.

Thanks. Now I know what data type MQTT sends or receives.

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