Version: 2021.3
LanguageEnglish
  • C#

SerializationUtility.GetManagedReferencesWithMissingTypes

Suggest a change

Success!

Thank you for helping us improve the quality of Unity Documentation. Although we cannot accept all submissions, we do read each suggested change from our users and will make updates where applicable.

Close

Submission failed

For some reason your suggested change could not be submitted. Please <a>try again</a> in a few minutes. And thank you for taking the time to help us improve the quality of Unity Documentation.

Close

Cancel

Declaration

public static ManagedReferenceMissingType[] GetManagedReferencesWithMissingTypes(Object obj);

Description

Returns the list of managed references that could not be deserialized because of a missing type.

This method returns the list of Managed References objects that could not be deserialized because their type is missing. This information can be used to help resolve missing type occurrences.

Additional resources: HasManagedReferencesWithMissingTypes, ManagedReferenceMissingType.

using System.Collections.Generic;
using System.Text;
using UnityEngine;
using UnityEditor;

public class GetManagedReferencesWithMissingTypesExample { enum ReportFormat { Detailed, ClassList }

[MenuItem("Example/Report MonoBehaviour Missing SerializeReference Types")] static public void ReportMissingTypes() { ReportMissingTypesOnActiveMonoBehaviours(ReportFormat.ClassList); }

[MenuItem("Example/Report MonoBehaviour Missing SerializeReference Types - Detailed")] static public void ReportMissingTypesDetailed() { ReportMissingTypesOnActiveMonoBehaviours(ReportFormat.Detailed); }

static private void ReportMissingTypesOnActiveMonoBehaviours(ReportFormat reportType) { var report = new StringBuilder();

// Visit all the active MonoBehaviours var myMonoComponents = Object.FindObjectsOfType<MonoBehaviour>(); foreach (var monoBehaviour in myMonoComponents) { ReportReferencesWithMissingTypesOnHost(monoBehaviour, ref report, reportType); }

if (report.Length == 0) report.Append("No missing types found");

Debug.Log(report.ToString()); }

static private void ReportReferencesWithMissingTypesOnHost(Object host, ref StringBuilder report, ReportFormat reportType) { // Report the references that have missing types on an individual MonoBehaviour, ScriptableObject or other host if (!SerializationUtility.HasManagedReferencesWithMissingTypes(host)) return;

var missingTypes = SerializationUtility.GetManagedReferencesWithMissingTypes(host);

report.Append(reportType == ReportFormat.Detailed ? "Missing references on " : "Missing classes on "); MonoBehaviourDescription(host, ref report);

if (reportType == ReportFormat.Detailed) { foreach (var missingType in missingTypes) { report.Append("\t").AppendFormat("{0} - {1}", missingType.referenceId, MissingClassFullName(missingType)); if (missingType.serializedData.Length > 0) report.Append("\t").AppendFormat("\n\t\t{0}", missingType.serializedData); report.AppendLine(); } } else { // Only report each unique class that is missing, rather than all objects using that class var missingClasses = new HashSet<string>(); foreach (var missingType in missingTypes) { missingClasses.Add(MissingClassFullName(missingType)); }

foreach (var missingClass in missingClasses) { report.Append("\t").Append(missingClass).AppendLine(); } } }

static private void MonoBehaviourDescription(Object host, ref StringBuilder stringBuilder) { // Identify the object that has missing types stringBuilder.AppendFormat("MonoBehaviour \"{0}\" (Type: {1}, Instance: {2})", host.name, host.GetType().FullName, host.GetInstanceID()).AppendLine(); }

static private string MissingClassFullName(ManagedReferenceMissingType missingType) { var description = new StringBuilder(); if (missingType.namespaceName.Length > 0) description.Append(missingType.namespaceName).Append("."); description.AppendFormat("{0}, {1}", missingType.className, missingType.assemblyName); return description.ToString(); } }