Databases
StackOverflow2013
Postsdbo
POJSON data error Unity3d
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POJSON data error Unity3d
    primarykey
    data
    text
    <p>I'm currently busy with a project in Unity. For this project, I need to use and work with json data.</p> <p>This is the json file: </p> <pre class="lang-json prettyprint-override"><code>{ "exerciseFrame": { "currentFrameRate": 115.003, "gestures": [], "hands": [ { "direction": [ -0.21788, 0.396045, -0.892007 ], "id": 67, "palmNormal": [ -0.207517, -0.911865, -0.354174 ], "palmPosition": [ 76.5549, 114.137, 5.89759 ], "palmVelocity": [ 11.5489, -12.4382, 30.413 ], "r": [ [ 0.985174, 0.0992006, -0.139971 ], [ -0.110688, 0.990883, -0.0768105 ], [ 0.131075, 0.0911648, 0.987172 ] ], "s": 0.877737, "sphereCenter": [ 53.6198, 53.1508, -39.351 ], "sphereRadius": 91.0197, "stabilizedPalmPosition": [ 74.1678, 112.23, 3.77527 ], "t": [ -20.2956, 10.8737, 19.0197 ], "timeVisible": 3.23297 } ], "id": 470433, "interactionBox": { "center": [ 0, 189, 0 ], "size": [ 209.24, 209.24, 146.232 ] }, "pointables": [ { "direction": [ -0.204191, -0.171441, -0.963802 ], "handId": 67, "id": 83, "length": 79.2433, "stabilizedTipPosition": [ 54.4213, 125.134, -95.3633 ], "timeVisible": 1.79999, "tipPosition": [ 58.1631, 128.283, -96.3226 ], "tipVelocity": [ 11.7388, -0.426162, 2.39705 ], "tool": false, "touchDistance": 0.16562, "touchZone": "hovering" }, { "direction": [ -0.128641, 0.0244301, -0.99139 ], "handId": 67, "id": 25, "length": 73.593, "stabilizedTipPosition": [ 84.4969, 125.889, -91.8182 ], "timeVisible": 1.40869, "tipPosition": [ 88.0132, 128.67, -92.9798 ], "tipVelocity": [ 9.78409, -4.46077, -10.2516 ], "tool": false, "touchDistance": 0.0726596, "touchZone": "hovering" }, { "direction": [ -0.231257, -0.0952694, -0.968217 ], "handId": 67, "id": 62, "length": 65.8749, "stabilizedTipPosition": [ 27.6915, 127.768, -78.6761 ], "timeVisible": 0.913038, "tipPosition": [ 30.0744, 130.094, -78.9935 ], "tipVelocity": [ 11.5967, -2.61466, -3.92538 ], "tool": false, "touchDistance": 0.123818, "touchZone": "hovering" }, { "direction": [ -0.0484869, 0.109018, -0.992857 ], "handId": 67, "id": 73, "length": 46.8336, "stabilizedTipPosition": [ 115.627, 114.182, -61.4815 ], "timeVisible": 0.739126, "tipPosition": [ 118.889, 116.921, -62.7602 ], "tipVelocity": [ 2.0058, -14.1922, 26.0571 ], "tool": false, "touchDistance": 0.308196, "touchZone": "hovering" }, { "direction": [ -0.757118, 0.0997547, -0.645617 ], "handId": 67, "id": 37, "length": 47.2933, "stabilizedTipPosition": [ -13.0828, 113.28, 3.91602 ], "timeVisible": 0.913038, "tipPosition": [ -10.3237, 117.652, 2.30821 ], "tipVelocity": [ 9.14501, 5.11948, -3.45668 ], "tool": false, "touchDistance": 0.0164196, "touchZone": "hovering" } ], "r": [ [ 0.564536, 0.157925, -0.81016 ], [ 0.200296, -0.978399, -0.0511501 ], [ -0.800738, -0.133395, -0.583973 ] ], "s": -443.531, "t": [ 22821.5, -11650.1, -3347.64 ], "timestamp": 5463086706 } } </code></pre> <p>I have loaded it into unity with the following script (according this tutorial <a href="http://www.paultondeur.com/2010/03/23/tutorial-loading-and-parsing-external-xml-and-json-files-with-unity-part-2-json/" rel="nofollow">http://www.paultondeur.com/2010/03/23/tutorial-loading-and-parsing-external-xml-and-json-files-with-unity-part-2-json/</a>)</p> <pre><code>using UnityEngine; using LitJson; using System; using System.Collections; public class LoadJSON : MonoBehaviour { IEnumerator Start() { //Load JSON data from a URL string url = "http://localhost/project/application/exercise.json"; WWW www = new WWW(url); //Load the data and yield (wait) till it's ready before we continue executing the rest of this method. yield return www; if (www.error == null) { //Process exercises found in JSON file ProcessExercises(www.data); } else { Debug.Log("ERROR: " + www.error); } } private void ProcessExercises(string jsonString) { Debug.Log (jsonString); JsonData jsonExercise = JsonMapper.ToObject(jsonString); // convert json data to object. Exercise exercise; for(int i = 0; i&lt;jsonExercise["exerciseFrame"].Count; i++) // for each exerciseFrame data in the .json file { Debug.Log(jsonExercise["exerciseFrame"].Count); } } private void loadExercise(){ } }` </code></pre> <p>It goes according to plan up until the line that is supposed to convert the json data to an object:</p> <pre><code>JsonData jsonExercise = JsonMapper.ToObject(jsonString); // convert json data to object. </code></pre> <p>I get the following error and I have no idea what is going wrong. Because jsonString is a string with data.</p> <pre><code>`ArgumentNullException: Argument cannot be null. Parameter name: key System.Collections.Generic.Dictionary`2[System.String,LitJson.PropertyMetadata].ContainsKey (System.String key) (at /Applications/buildAgent/work/c514da0c8183631c/mcs/class/corlib/System.Collections.Generic/Dictionary.cs:458) LitJson.JsonMapper.ReadValue (System.Type inst_type, LitJson.JsonReader reader) LitJson.JsonMapper.ReadValue (System.Type inst_type, LitJson.JsonReader reader) LitJson.JsonMapper.ReadValue (System.Type inst_type, LitJson.JsonReader reader) LitJson.JsonMapper.ReadValue (System.Type inst_type, LitJson.JsonReader reader) LitJson.JsonMapper.ToObject[JsonData] (System.String json) LoadJSON.ProcessExercises (System.String jsonString) (at Assets/Scripts/JSON/LoadJSON.cs:32) LoadJSON+&lt;Start&gt;c__Iterator1.MoveNext () (at Assets/Scripts/JSON/LoadJSON.cs:20)` </code></pre> <p>I really hope someone here can help me out. Thanks a lot for your time!</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USglomad
    1. USShark
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. COjson looks valid. Are you glued to LitJson? Perhaps it's worth your while to try a different json parsing library.
      singulars
      1. POJSON data error Unity3d
      1. USdwerner
    2. COHey! You think LitJson is the issue? Any suggestions for different libraries?
      singulars
      1. POJSON data error Unity3d
      1. USShark
    3. COThe unity community has already answered that one: http://answers.unity3d.com/questions/8044/what-is-the-easiest-json-library-to-integrate-with.html
      singulars
      1. POJSON data error Unity3d
      1. USdwerner
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload