Add PostNotifications implementation for iOS

src/Essentials/samples/Samples/Platforms/Android/AndroidManifest.xml

@@ -11,6 +11,7 @@
 	<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
 	<uses-permission android:name="android.permission.VIBRATE" />
 	<uses-permission android:name="android.permission.READ_CONTACTS" />
+	<uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
 	<queries>
 		<!-- Email -->
 		<intent>

src/Essentials/samples/Samples/Platforms/iOS/Info.plist

@@ -64,5 +64,9 @@
 	<string>Just writing events to the Calendar, nothing to see here.</string>
 	<key>NSRemindersFullAccessUsageDescription</key>
 	<string>Just so you will remember</string>
+	<key>UIBackgroundModes</key>
+	<array>
+		<string>remote-notification</string>
+	</array>
 </dict>
 </plist>

src/Essentials/src/Permissions/Permissions.ios.cs

@@ -7,6 +7,7 @@
 using CoreBluetooth;
 using MediaPlayer;
 using Speech;
+using UserNotifications;
 
 namespace Microsoft.Maui.ApplicationModel
 {
@@ -293,6 +294,51 @@ public override Task<PermissionStatus> RequestAsync()
 			}
 		}
 
+		public partial class PostNotifications : BasePlatformPermission
+		{
+			/// <inheritdoc/>
+			public override Task<PermissionStatus> CheckStatusAsync()
+			{
+				var tcs = new TaskCompletionSource<PermissionStatus>();
+
+				UNUserNotificationCenter.Current.GetNotificationSettings(settings =>
+				{
+					switch (settings.AuthorizationStatus)
+					{
+						case UNAuthorizationStatus.Authorized:
+						case UNAuthorizationStatus.Provisional:
+						case UNAuthorizationStatus.Ephemeral:
+							tcs.TrySetResult(PermissionStatus.Granted);
+							break;
+						case UNAuthorizationStatus.Denied:
+							tcs.TrySetResult(PermissionStatus.Denied);
+							break;
+						default:
+							tcs.TrySetResult(PermissionStatus.Unknown);
+							break;
+					}
+				});
+
+				return tcs.Task;
+			}
+
+			/// <inheritdoc/>
+			public override async Task<PermissionStatus> RequestAsync()
+			{
+				var status = await CheckStatusAsync();
+				if (status == PermissionStatus.Granted)
+					return status;
+
+				var (granted, error) = await UNUserNotificationCenter.Current.RequestAuthorizationAsync(
+					UNAuthorizationOptions.Alert | UNAuthorizationOptions.Badge | UNAuthorizationOptions.Sound);
+
+				if (error is not null)
+					return PermissionStatus.Unknown;
+
+				return granted ? PermissionStatus.Granted : PermissionStatus.Denied;
+			}
+		}
+
 		public partial class Speech : BasePlatformPermission
 		{
 			/// <inheritdoc/>

src/Essentials/src/PublicAPI/net-ios/PublicAPI.Unshipped.txt

@@ -5,3 +5,5 @@ override Microsoft.Maui.Devices.Sensors.LocationTypeConverter.CanConvertFrom(Sys
 override Microsoft.Maui.Devices.Sensors.LocationTypeConverter.CanConvertTo(System.ComponentModel.ITypeDescriptorContext? context, System.Type? destinationType) -> bool
 override Microsoft.Maui.Devices.Sensors.LocationTypeConverter.ConvertFrom(System.ComponentModel.ITypeDescriptorContext? context, System.Globalization.CultureInfo? culture, object! value) -> object?
 override Microsoft.Maui.Devices.Sensors.LocationTypeConverter.ConvertTo(System.ComponentModel.ITypeDescriptorContext? context, System.Globalization.CultureInfo? culture, object? value, System.Type! destinationType) -> object?
+~override Microsoft.Maui.ApplicationModel.Permissions.PostNotifications.CheckStatusAsync() -> System.Threading.Tasks.Task<Microsoft.Maui.ApplicationModel.PermissionStatus>
+~override Microsoft.Maui.ApplicationModel.Permissions.PostNotifications.RequestAsync() -> System.Threading.Tasks.Task<Microsoft.Maui.ApplicationModel.PermissionStatus>

src/Essentials/src/PublicAPI/net-maccatalyst/PublicAPI.Unshipped.txt

@@ -5,3 +5,5 @@ override Microsoft.Maui.Devices.Sensors.LocationTypeConverter.CanConvertFrom(Sys
 override Microsoft.Maui.Devices.Sensors.LocationTypeConverter.CanConvertTo(System.ComponentModel.ITypeDescriptorContext? context, System.Type? destinationType) -> bool
 override Microsoft.Maui.Devices.Sensors.LocationTypeConverter.ConvertFrom(System.ComponentModel.ITypeDescriptorContext? context, System.Globalization.CultureInfo? culture, object! value) -> object?
 override Microsoft.Maui.Devices.Sensors.LocationTypeConverter.ConvertTo(System.ComponentModel.ITypeDescriptorContext? context, System.Globalization.CultureInfo? culture, object? value, System.Type! destinationType) -> object?
+~override Microsoft.Maui.ApplicationModel.Permissions.PostNotifications.CheckStatusAsync() -> System.Threading.Tasks.Task<Microsoft.Maui.ApplicationModel.PermissionStatus>
+~override Microsoft.Maui.ApplicationModel.Permissions.PostNotifications.RequestAsync() -> System.Threading.Tasks.Task<Microsoft.Maui.ApplicationModel.PermissionStatus>

src/Essentials/test/DeviceTests/Tests/Permissions_Tests.cs

@@ -103,5 +103,16 @@ public async Task StorageAndroid13AlwaysGranted()
 				Assert.Equal(PermissionStatus.Denied, status);
 			}
 		}
+
+		[Fact]
+		public async Task PostNotifications_CheckStatus_ReturnsValidStatus()
+		{
+			var status = await Permissions.CheckStatusAsync<Permissions.PostNotifications>();
+			Assert.True(
+				status == PermissionStatus.Unknown ||
+				status == PermissionStatus.Granted ||
+				status == PermissionStatus.Denied,
+				$"Unexpected PostNotifications status: {status}");
+		}
 	}
 }