Question

我正在关注本教程https://www.youtube.com/watch?v=YOaYQrN1oYQ，当我尝试创建分辨率下拉列表时，会出现多个错误，它们是

NullReferenceException: Object reference not set to an instance of an object
UnityEditor.InspectorWindow.DrawEditor (UnityEditor.Editor[] editors, Int32 editorIndex, Boolean rebuildOptimizedGUIBlock, System.Boolean& showImportedObjectBarNext, UnityEngine.Rect& importedObjectBarRect) (at /Users/builduser/buildslave/unity/build/Editor/Mono/Inspector/InspectorWindow.cs:1114)
UnityEditor.InspectorWindow.DrawEditors (UnityEditor.Editor[] editors) (at /Users/builduser/buildslave/unity/build/Editor/Mono/Inspector/InspectorWindow.cs:1073)
UnityEditor.InspectorWindow.OnGUI () (at /Users/builduser/buildslave/unity/build/Editor/Mono/Inspector/InspectorWindow.cs:413)
System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:222)
Rethrow as TargetInvocationException: Exception has been thrown by the target of an invocation.
System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:232)
System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MethodBase.cs:115

我已将公共分辨率下拉列表设置为某些内容，而错误与上述行

之上的内容无关

public void SetVolume (float volume)

代码：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Audio;
using UnityEngine.UI;

public class scr : MonoBehaviour {

    public AudioMixer audioMixer;

    public Dropdown resolutionDropdown;

    Resolution[] resolutions;

    void Start ()
    {
        resolutions =  Screen.resolutions;

        resolutionDropdown.ClearOptions();

        List<string> options = new List<string>();

        for (int i = 0; i < resolutions.Length; i++)
        {
            string option = resolutions[i].width + " x " + resolutions[i].height;
            options.Add(option);

            if (resolutions[i].width == Screen.currentResolution.width && 
                resolutions[i].height == Screen.currentResolution.height)

            {
                currentResolutionIndex = i;
            }
        }

        resolutionDropdown.AddOptions(options);
        resolutionDropdown.value = currentResolutionIndex;
        resolutionDropdown.RefreshShownValue();

    }
    public void SetResolution(int resolutionIndex)
    {
    Screen.SetResolution(resolution.width, resolution.height, Screen.fullscreen);
    }
    public void SetVolume (float volume)
    {
        audioMixer.SetFloat("volume", volume);
    }

    public void SetQuality (int qualityIndex)
    {
        QualitySettings.SetQualityLevel(qualityIndex);
    }

    public void SetFullscreen (bool isFullscreen)
    {
        Screen.fullScreen = isFullscreen;
    }
}

Answer 1

您的stacktrace表示从编辑器抛出的异常，而不是您的脚本。尝试重新启动Unity。

来自Unity Answers。

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1 个答案: