CODEWITHSUNDEEP
c#unity-game-enginehttpwebrequestcoroutineienumerator
FutureCake
FutureCake

Reputation: 2953

Unity UnityWebRequest is not returning a value

I have some code to get some data from a database. To use in my game. I have setup an coroutine to get this data with the WWW framework in unity. But when i run my code the data is never logged in my yield return function. Why is this happening? See the code below for the points that are not working: 

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Networking;

public class Main : MonoBehaviour {

    void Start () {
        Debug.Log("run ma routine");
        StartCoroutine(GetText("http://localhost/artez/praktijk_opdracht/interface_v4/app/php/get_fashion.php", (result) =>{
            Debug.Log(result); // this log function is never logging a value.. Why is this?
        }));
    }

    void Update () 
    {
    }

    IEnumerator GetText(string url, Action<string> result) {
        UnityWebRequest www = UnityWebRequest.Get(url);
        yield return www.SendWebRequest();

        if(www.isNetworkError || www.isHttpError) {
            Debug.Log(www.error);
        }
        else {
            Debug.Log(www.downloadHandler.data); // this log is returning the requested data. 
        }
    }
}

What i want is the StartCoroutine() to log the data not the debug.log inside of the IEnumerator()

If something needs more explanation i am happy to provide that.

Upvotes: 3

Views: 8872

Answers (1)

Programmer
Programmer

Reputation: 125455

You have to invoke the result Action after the UnityWebRequest request is done inside the GetText function:

if (result != null)
    result(www.downloadHandler.text);

The new GetText function:

IEnumerator GetText(string url, Action<string> result)
{
    UnityWebRequest www = UnityWebRequest.Get(url);
    yield return www.SendWebRequest();

    if (www.isNetworkError || www.isHttpError)
    {
        Debug.Log(www.error);
        if (result != null)
            result(www.error);
    }
    else
    {
        Debug.Log(www.downloadHandler.data); // this log is returning the requested data. 
        if (result != null)
            result(www.downloadHandler.text);
    }
}

Upvotes: 3

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