How can I display text from a webrequest?

Question

I am using a HTTP request to try and access a REST endpoint. I want to display the text I get in a canvas but I can't seem to get the output of the request to display in the Canvas.

 using UnityEngine.Networking;
 
 class Rest_test : MonoBehaviour {
     public TextMesh thistext;
     // Use this for initialization
     void Start () {
         StartCoroutine (GetText ());
     }
 
     IEnumerator GetText() {
         UnityWebRequest www = UnityWebRequest.Get("http://jsonplaceholder.typicode.com/posts/1");
         www.downloadHandler = new DownloadHandlerBuffer();
         yield return www.Send();
 
         if(www.isError) {
             Debug.Log(www.error);
         }
         else {
             // Show results as text
             Debug.Log(www.downloadHandler.text);
 
             // Or retrieve results as binary data
             //byte[] results = www.downloadHandler.data;
         }
     }
     void Update () {
     thistext.text = GetText ();
     }
 }

I'm pretty new to C# and Unity so i may be missing something very basic. I get the following error when I add the script to my scene: Assets/Rest_test.cs(30,18): error CS0029: Cannot implicitly convert type System.Collections.IEnumerator' to string'

Answer 1

Answer by aFeesh · Mar 03, 2018 at 05:36 PM

@ccouper

You want to use www.downloadHandler.text and not overwrite the downloadHandler with a new instance. You may also want to use www.SendWebRequest() instead of www.Send()

      IEnumerator GetText() {
          UnityWebRequest www = UnityWebRequest.Get("http://jsonplaceholder.typicode.com/posts/1");
 
          yield return www.SendWebRequest();
  
          if (www.isError) {
              Debug.Log(www.error);
          } else {
              // Show results as text
              Debug.Log(www.downloadHandler.text);
  
              // Or retrieve results as binary data
              //byte[] results = www.downloadHandler.data;
          }
      }

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movAX13h · Sep 11, 2019 at 09:41 AM 0

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.isError is now .isNetworkError

Answer 2

Answer by toddisarockstar · Mar 31, 2017 at 11:58 PM

this is how i usually do it:

 using UnityEngine;
 using System.Collections;
 
 public class wwww : MonoBehaviour {
 
     WWW www;
     string txt;
     bool gotit;
     byte[] bytes;
 
     void Start () {
         www = new WWW("http://jsonplaceholder.typicode.com/posts/1");
     }
     
 
     void Update () {
                 if (!gotit){
                       if (www.isDone) {gotit=true;
                 if(www.error==null){
                     bytes=www.bytes;
                     txt = www.text;
                     print (txt);
                     print ("i got "+bytes.Length+" bytes from download");
                 }else{print("I got this error: "+www.error);}
 
             
             }
         }

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ccouper · Apr 04, 2017 at 01:26 PM 0

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Thanks - this does work but I was hoping to use the newer UnityWebrequest.

How can I display text from a webrequest?

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