The embedded EventSystem is activated only when needed to avoid dupli…

…cate EventSystem warnings in the Console

Plugins/ImageCropper/Resources/ImageCropper.prefab

@@ -339,6 +339,7 @@ GameObject:
   - component: {fileID: 114447286773665142}
   - component: {fileID: 114788079095688046}
   - component: {fileID: 114323362291179536}
+  - component: {fileID: 114327519071772764}
   m_Layer: 0
   m_Name: ImageCropper
   m_TagString: Untagged
@@ -638,7 +639,7 @@ GameObject:
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
   m_StaticEditorFlags: 0
-  m_IsActive: 1
+  m_IsActive: 0
 --- !u!1 &1718562304412798
 GameObject:
   m_ObjectHideFlags: 1
@@ -1341,6 +1342,18 @@ MonoBehaviour:
   detail: 84
   mode: 0
   edgeThickness: 1
+--- !u!114 &114327519071772764
+MonoBehaviour:
+  m_ObjectHideFlags: 1
+  m_PrefabParentObject: {fileID: 0}
+  m_PrefabInternal: {fileID: 100100000}
+  m_GameObject: {fileID: 1448628512259654}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: 5a39d7b3bb056d340842cf64a2bdf500, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+  embeddedEventSystem: {fileID: 1713518909072214}
 --- !u!114 &114346701098374660
 MonoBehaviour:
   m_ObjectHideFlags: 1

Plugins/ImageCropper/Scripts/EventSystemHandler.cs

@@ -0,0 +1,57 @@
+using UnityEngine;
+using UnityEngine.EventSystems;
+using UnityEngine.SceneManagement;
+
+namespace ImageCropperNamespace
+{
+	// Avoid multiple EventSystems in the scene by activating the embedded EventSystem only if one doesn't already exist in the scene
+	[DefaultExecutionOrder( 1000 )]
+	public class EventSystemHandler : MonoBehaviour
+	{
+#pragma warning disable 0649
+		[SerializeField]
+		private GameObject embeddedEventSystem;
+#pragma warning restore 0649
+
+		private void OnEnable()
+		{
+			SceneManager.sceneLoaded -= OnSceneLoaded;
+			SceneManager.sceneLoaded += OnSceneLoaded;
+			SceneManager.sceneUnloaded -= OnSceneUnloaded;
+			SceneManager.sceneUnloaded += OnSceneUnloaded;
+
+			ActivateEventSystemIfNeeded();
+		}
+
+		private void OnDisable()
+		{
+			SceneManager.sceneLoaded -= OnSceneLoaded;
+			SceneManager.sceneUnloaded -= OnSceneUnloaded;
+
+			DeactivateEventSystem();
+		}
+
+		private void OnSceneLoaded( Scene scene, LoadSceneMode mode )
+		{
+			ActivateEventSystemIfNeeded();
+		}
+
+		private void OnSceneUnloaded( Scene current )
+		{
+			// Deactivate the embedded EventSystem before changing scenes because the new scene might have its own EventSystem
+			DeactivateEventSystem();
+		}
+
+		private void ActivateEventSystemIfNeeded()
+		{
+			if( embeddedEventSystem && !EventSystem.current )
+				embeddedEventSystem.SetActive( true );
+		}
+
+		private void DeactivateEventSystem()
+		{
+			if( embeddedEventSystem )
+				embeddedEventSystem.SetActive( false );
+		}
+	}
+}

package.json

@@ -1,7 +1,7 @@
 {
   "name": "com.yasirkula.imagecropper",
   "displayName": "Image Cropper",
-  "version": "1.0.4",
+  "version": "1.0.5",
   "documentationUrl": "https://github.com/yasirkula/UnityImageCropper",
   "changelogUrl": "https://github.com/yasirkula/UnityImageCropper/releases",
   "licensesUrl": "https://github.com/yasirkula/UnityImageCropper/blob/master/LICENSE.txt",