Android Question Read data from URL into variables

DKHDKH · Sep 24, 2019

I get the following data from my energy meter via http://190.160.1.12/restAPI?get=Actual
The data:

{
"Timestamp": "190924184540S"
, "Energy_Delivered": "16021.018"
, "Energy_Returned": "0.000"
, "Gas_Delivered": "2393.86"
, "Energy_Delivered_Tariff1": "9646.286"
, "Energy_Delivered_Tariff2": "6374.731"
, "Energy_Returned_Tariff1": "0.000"
, "Energy_Returned_Tariff2": "0.000"
, "Power_Delivered": "2.892"
, "Power_Returned": "0.000"
, "Voltage_l1": "0.0"
, "Current_l1": "12"
, "Voltage_l2": "0.0"
, "Current_l2": "0"
, "Voltage_l3": "0.0"
, "Current_l3": "0"
, "Power_Delivered_l1": "2892"
, "Power_Returned_l1": "0"
, "Power_Delivered_l2": "0"
, "Power_Returned_l2": "0"
, "Power_Delivered_l3": "0"
, "Power_Returned_l3": "0"
}

I would like to display this data differently. I am unable to write this data in variables.
Many demos and posts viewed and tried. For example:
https://www.b4x.com/android/forum/t...-json-response-from-an-api-web-request.45822/
https://www.b4x.com/android/forum/t...-services-are-now-even-simpler.18992/#content

So now the question to you if someone can help me on my way. Thanks in advance.
Dirk

DKHDKH · Sep 25, 2019

Thanks for the help and patience.
I get the desired data despite the error. I will continue with this.
Thanks again everyone.

DKHDKH · Sep 25, 2019

emexes said:
This is clutching at straws, but... what happens if you add a delay (and Log) after the Wait For, eg:

B4X:

Dim job As HttpJob job.Initialize("", Me) job.Download2("http://190.160.1.12/restAPI", Array As String("get", "Actual")) Wait For (job) JobDone(job As HttpJob) Sleep(100) 'add this Log("job.Success = " & job.Success) 'and this

I become the same error.

emexes · Sep 25, 2019

DKHDKH said:
I become the same error.

Drats!

The other thought is: try https instead of http... but on a local network, I wouldn't expect this to be required, and thus probably won't make any difference either.

Still worth a try, though.

DKHDKH · Sep 25, 2019

I have now put it on local network and also tried HTTPS and the same error remains.
I get the desired data despite the error. I will continue with this.

DKHDKH · Sep 25, 2019

Thanks for the help and patience everyone.

Jeffrey Cameron · Sep 25, 2019

The only two things I noticed in your code:

1) As you're using Wait For you don't need your separate JobDone subroutine, remove it (though I doubt if this will confuse things).
2) I don't see a Job.Release anywhere in your parsing block (I'd put it right after your Dim Response = job.getstring if you're done using the object).

DKHDKH · Sep 29, 2019

I have adjusted the following rule and now the error is gone. I do not send any parameters to the URL so DOWNLOAD must be used and not DOWNLOAD2.
It was:
job.download2("http://192.168.0.38/restAPI?get=Actual", Array As String("get", "Actual"))

Changed in:
job.download("http://192.168.0.38/restAPI?get=Actual")

OliverA · Sep 29, 2019

DKHDKH said:
I have adjusted the following rule and now the error is gone. I do not send any parameters to the URL so DOWNLOAD must be used and not DOWNLOAD2.
It was:
job.download2("http://192.168.0.38/restAPI?get=Actual", Array As String("get", "Actual"))

Changed in:
job.download("http://192.168.0.38/restAPI?get=Actual")

that’s because you used Download2 incorrectly. Take out the ?get=Actual. That is what Download2 creates with the array. As you have it, Download2 generates

http://192.168.0.38/restAPI?get=Actual?get=Actual

So no, Download must not be used, Download2 just needs to be used properly. Or you can use Download and worry about properly formatting your URL parameters yourself, something Download2 does gladly for you.

DKHDKH · Sep 29, 2019

Thanks for the help.

Android Question Read data from URL into variables

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