Accessing DialogFlow from Flutter

[島津秀雄]

Hi, I am running a " flutter_dialogflow_v2 0.3.2"  sample program described in

https://pub.dev/packages/flutter_dialogflow_v2/example.

My program has an error.  The "DetectIntent" method calls Diagflow with 

a natural language query and gets its natural language reply as its result.

But, the result value is null [], and the program can not proceed then.

(Attached file is the snapshot of the screen).

I am struggling with this problem for 3 days.

I am wondering if my Google service account is not correct.

Thank you for your advices in advance.

  

[Suzuki Tomohiro]

> I am wondering if my Google service account is not correct.

Try putting incorrect value in your service account JSON. If it throws a different error, your account was correct.

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[島津秀雄]

Tomo san,

Thank you very much for your prompt reply. 

My flutter application calls DialogFlow API correctly and it returns a structured "response" whose "query text" part is equal to its input. But the "fulfillment" part is still null.

I am wondering if my input parameter to the DetectIntent method is right or not.

Thank you again.

2020年10月24日(土) 2:41 Suzuki Tomohiro <suz...@gmail.com>:

[Suzuki Tomohiro]

Glad to hear that you now know your account setting is correct.

How about making the same DialogFlow call outside your Flutter app? Do you know how to make such HTTP request? (I don’t know)

If the same problem happens without Flutter, then it’s not your Flutter app or the plugin.

[Devashish Mamgain]

yes, the Dialogflow call should happen outside of the app for multiple reasons such as security, and upgrades.

we have developed Flutter SDK that supports deploying Dialogflow bot outside of Flutter.

https://github.com/Kommunicate-io/Kommunicate-Flutter-Plugin

Above is the SDK and the Dialogflow connection will be done under:

https://www.kommunicate.io