Wrapped the remaining NSMutableArray properties

Demos/Microsoft.Band.Sample/Microsoft.Band.iOS.Sample/MainViewController.cs

@@ -142,7 +142,7 @@ async partial void SendMessageClick (UIButton sender)
 
 				// send a message with a dialog
 				try {
-					await client.NotificationManager.SendMessageTaskAsync (customId, "Hello", "Hello World!", DateTime.Now, true);
+					await client.NotificationManager.SendMessageTaskAsync (tileId, "Hello", "Hello World!", DateTime.Now, true);
 					Output ("Sent the message!!");
 				} catch (BandException ex) {
 					Output ("Failed to send the message:");

Microsoft.Band/Microsoft.Band.iOS/ApiDefinition.cs

@@ -781,12 +781,14 @@ interface BandTile
 		bool BadgingEnabled { [Bind ("isBadgingEnabled")] get; set; }
 
 		// @property (readonly, nonatomic) NSMutableArray * pageIcons;
+		[Internal]
 		[Export ("pageIcons")]
-		NSMutableArray PageIcons { get; }
+		NSMutableArray PageIconsInternal { get; }
 
 		// @property (readonly, nonatomic) NSMutableArray * pageLayouts;
+		[Internal]
 		[Export ("pageLayouts")]
-		NSMutableArray PageLayouts { get; }
+		NSMutableArray PageLayoutsInternal { get; }
 
 		// +(MSBTile *)tileWithId:(NSUUID *)tileId name:(NSString *)tileName tileIcon:(MSBIcon *)tileIcon smallIcon:(MSBIcon *)smallIcon error:(NSError **)pError;
 		[Static]

Microsoft.Band/Microsoft.Band.iOS/Microsoft.Band.iOS.csproj

@@ -62,6 +62,7 @@
     <Compile Include="Tiles\BandTileManagerExtensions.cs" />
     <Compile Include="Pages\BandPagePanel.cs" />
     <Compile Include="BandCollection.cs" />
+    <Compile Include="Tiles\BandTile.cs" />
   </ItemGroup>
   <ItemGroup>
     <ObjcBindingApiDefinition Include="ApiDefinition.cs" />

Microsoft.Band/Microsoft.Band.iOS/Tiles/BandTile.cs

@@ -0,0 +1,49 @@
+using System.Collections.Generic;
+
+using Microsoft.Band.Pages;
+
+namespace Microsoft.Band.Tiles
+{
+	public partial class BandTile
+	{
+		private object pageIconsLock = new object();
+		private BandCollection<BandIcon> pageIcons;
+
+		public IList<BandIcon> PageIcons { 
+			get {
+				// check outside to avoid unnecessary locking
+				if (pageIcons == null) {
+					// we lock for thread safety
+					lock (pageIconsLock) {
+						// do a check before init
+						if (pageIcons == null) {
+							pageIcons = new BandCollection<BandIcon> (PageIconsInternal);
+						}
+					}
+				}
+
+				return pageIcons;
+			} 
+		}
+
+		private object pageLayoutsLock = new object();
+		private BandCollection<BandPageLayout> pageLayouts;
+
+		public IList<BandPageLayout> PageLayouts { 
+			get {
+				// check outside to avoid unnecessary locking
+				if (pageLayouts == null) {
+					// we lock for thread safety
+					lock (pageLayoutsLock) {
+						// do a check before init
+						if (pageLayouts == null) {
+							pageLayouts = new BandCollection<BandPageLayout> (PageLayoutsInternal);
+						}
+					}
+				}
+
+				return pageLayouts;
+			} 
+		}
+	}
+}