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Я хочу изменить Sprite из в GameObject через C# сценарий. URL-адрес изображения, который я успешно получаю от вызова REST API. С WWW Я хочу создать новый Sprite для GameObject. Но теперь я не знаю, что я делаю неправильно. Я прочитал, чтобы решить проблему, используя https://docs.unity3d.com/ScriptReference/GameObject.AddComponent.html, но как подробно?Unity3D - NullReferenceException UnityEngine.MonoBehaviour.StartCoroutine
Это скрипт событие OnClick кнопки:
ApiClient apiclient = new ApiClient();
string imageurl = apiclient.callSearchApiWithCSharp(realEstateType, preisText.text, zimmerText.text);
Debug.Log(imageurl);
apiclient.loadPic(imageurl);
методы, чтобы получить картину и создать спрайт его:
public void loadPic(string url)
{
WWW www = new WWW(url);
StartCoroutine(WaitForRequest(www));
}
IEnumerator WaitForRequest(WWW www)
{
yield return www;
// check for errors
if (www.error == null)
{
Debug.Log("WWW Ok!: " + www.text);
image.GetComponent<Image>().overrideSprite = Sprite.Create(www.texture, new Rect(0, 0, 438, 441), new Vector2(0.5f, 0.5f));
}
else
{
Debug.Log("WWW Error: " + www.error);
}
}
результат:
https://[email protected]/pic/orig02/L/106/539/941/106539941-0.png
NullReferenceException
UnityEngine.MonoBehaviour.StartCoroutine (IEnumerator routine) (at C:/buildslave/unity/build/artifacts/generated/common/runtime/UnityEngineMonoBehaviourBindings.gen.cs:61)
ApiClient.loadPic (System.String url) (at Assets/ApiClient.cs:89)
ObjectTypeListener.callObjectType() (at Assets/ObjectTypeListener.cs:59)
UnityEngine.Events.InvokableCall.Invoke (System.Object[] args) (at C:/buildslave/unity/build/Runtime/Export/UnityEvent.cs:153)
UnityEngine.Events.InvokableCallList.Invoke (System.Object[] parameters) (at C:/buildslave/unity/build/Runtime/Export/UnityEvent.cs:634)
UnityEngine.Events.UnityEventBase.Invoke (System.Object[] parameters) (at C:/buildslave/unity/build/Runtime/Export/UnityEvent.cs:769)
UnityEngine.Events.UnityEvent.Invoke() (at C:/buildslave/unity/build/Runtime/Export/UnityEvent_0.cs:53)
UnityEngine.UI.Button.Press() (at C:/buildslave/unity/build/Extensions/guisystem/UnityEngine.UI/UI/Core/Button.cs:35)
UnityEngine.UI.Button.OnPointerClick (UnityEngine.EventSystems.PointerEventData eventData) (at C:/buildslave/unity/build/Extensions/guisystem/UnityEngine.UI/UI/Core/Button.cs:44)
UnityEngine.EventSystems.ExecuteEvents.Execute (IPointerClickHandler handler, UnityEngine.EventSystems.BaseEventData eventData) (at C:/buildslave/unity/build/Extensions/guisystem/UnityEngine.UI/EventSystem/ExecuteEvents.cs:52)
UnityEngine.EventSystems.ExecuteEvents.Execute[IPointerClickHandler] (UnityEngine.GameObject target, UnityEngine.EventSystems.BaseEventData eventData, UnityEngine.EventSystems.EventFunction`1 functor) (at C:/buildslave/unity/build/Extensions/guisystem/UnityEngine.UI/EventSystem/ExecuteEvents.cs:269)
UnityEngine.EventSystems.ExecuteEvents:Execute(GameObject, BaseEventData, EventFunction`1)
ControllerTrack2:ProcessTrigger(PointerEventData, GameObject) (at Assets/ControllerTrack2.cs:77)
ControllerTrack2:Process() (at Assets/ControllerTrack2.cs:49)
UnityEngine.EventSystems.EventSystem:Update()