Create AndroidPermissionUtilities.cs

Author: keveleigh

org.mixedrealitytoolkit.input/Utilities/AndroidPermissionUtilities.cs

@@ -0,0 +1,62 @@
+// Copyright (c) Mixed Reality Toolkit Contributors
+// Licensed under the BSD 3-Clause
+
+using UnityEngine;
+
+#if UNITY_ANDROID && UNITY_OPENXR_PRESENT && !UNITY_EDITOR
+using System.Collections.Generic;
+using UnityEngine.Android;
+using UnityEngine.XR.OpenXR;
+#endif
+
+namespace MixedReality.Toolkit.Input
+{
+    public class AndroidPermissionUtilities : MonoBehaviour
+    {
+        [SerializeField, Tooltip("A key (OpenXR extension name) value (Android permission string) pairing to request at runtime if the extension is supported and enabled.")]
+        private Unity.XR.CoreUtils.Collections.SerializableDictionary<string, string> permissions;
+
+#if UNITY_ANDROID && UNITY_OPENXR_PRESENT && !UNITY_EDITOR
+        protected virtual void Start()
+        {
+            List<string> neededPermissions = new(permissions.Count);
+
+            for (int i = 0; i < permissions.Count; i++)
+            {
+                string extensionName = permissions.SerializedItems[i].Key;
+                string permissionName = permissions.SerializedItems[i].Value;
+                if (!string.IsNullOrWhiteSpace(extensionName) &&
+                    !string.IsNullOrWhiteSpace(permissionName) &&
+                    OpenXRRuntime.IsExtensionEnabled(extensionName) &&
+                    !Permission.HasUserAuthorizedPermission(permissionName))
+                {
+                    neededPermissions.Add(permissionName);
+                }
+            }
+
+            if (neededPermissions.Count > 0)
+            {
+                PermissionCallbacks callbacks = new();
+                callbacks.PermissionDenied += OnPermissionDenied;
+                callbacks.PermissionGranted += OnPermissionGranted;
+                Permission.RequestUserPermissions(neededPermissions.ToArray(), callbacks);
+                Debug.Log($"MRTK is requesting the following permissions for {gameObject.name}: {string.Join(", ", neededPermissions)}.");
+            }
+            else
+            {
+                Debug.Log($"All permissions for {gameObject.name} already granted for MRTK.");
+            }
+        }
+
+        void OnPermissionDenied(string permission)
+        {
+            Debug.Log($"{permission} denied or not needed on this runtime ({OpenXRRuntime.name}). MRTK may not work as expected.");
+        }
+
+        void OnPermissionGranted(string permission)
+        {
+            Debug.Log($"{permission} newly granted for MRTK.");
+        }
+#endif
+    }
+}