Shell hamburger

Xamarin.Forms.Platform.Android/PickerManager.cs

@@ -79,8 +79,6 @@ public void OnClick(global::Android.Views.View v)
 						renderer1.OnClick();
 					else if (picker?.Parent?.Parent?.Parent is IPickerRenderer renderer2)
 						renderer2.OnClick();
-					else
-						throw new System.Exception("Renderer not found temp check for Shane things");
 				}
 			}
 		}

Xamarin.Forms.Platform.iOS/Renderers/ShellPageRendererTracker.cs

@@ -1,4 +1,5 @@
 using CoreGraphics;
+using Foundation;
 using System;
 using System.Collections.Generic;
 using System.Collections.Specialized;
@@ -54,13 +55,15 @@ public Page Page
 		UISearchController _searchController;
 		SearchHandler _searchHandler;
 		Page _page;
+		NSCache _nSCache;
 
 		BackButtonBehavior BackButtonBehavior { get; set; }
 		UINavigationItem NavigationItem { get; set; }
 
 		public ShellPageRendererTracker(IShellContext context)
 		{
 			_context = context;
+			_nSCache = new NSCache();
 		}
 
 		public async void OnFlyoutBehaviorChanged(FlyoutBehavior behavior)
@@ -247,14 +250,55 @@ async Task SetDrawerArrowDrawableFromFlyoutIcon()
 				}
 				item = item?.Parent;
 			}
-			if (image == null)
-				image = "3bar.png";
-			var icon = await image.GetNativeImageAsync();
+
+			UIImage icon = null;
+
+			if (image != null)
+				icon = await image.GetNativeImageAsync();
+			else
+				icon = DrawHamburger();
+
+
 			var barButtonItem = new UIBarButtonItem(icon, UIBarButtonItemStyle.Plain, OnMenuButtonPressed);
+
 			barButtonItem.AccessibilityIdentifier = "OK";
 			NavigationItem.LeftBarButtonItem = barButtonItem;
 		}
 
+		UIImage DrawHamburger()
+		{
+			const string hamburgerKey = "Hamburger";
+			UIImage img = (UIImage)_nSCache.ObjectForKey((NSString)hamburgerKey);
+
+			if (img != null)
+				return img;
+
+			var rect = new CGRect(0, 0, 23f, 23f);
+
+			UIGraphics.BeginImageContextWithOptions(rect.Size, false, 0);
+			var ctx = UIGraphics.GetCurrentContext();
+			ctx.SaveState();
+			ctx.SetStrokeColor(UIColor.Blue.CGColor);
+
+			float size = 3f;
+			float start = 4f;
+			ctx.SetLineWidth(size);
+
+			for(int i = 0; i< 3; i++)
+			{
+				ctx.MoveTo(1f, start + i * (size * 2));
+				ctx.AddLineToPoint(22f, start + i * (size * 2));
+				ctx.StrokePath();
+			}
+
+			ctx.RestoreState();
+			img = UIGraphics.GetImageFromCurrentImageContext();
+			UIGraphics.EndImageContext();
+
+			_nSCache.SetObjectforKey(img, (NSString)hamburgerKey);
+			return img;
+		}
+
 		void OnMenuButtonPressed(object sender, EventArgs e)
 		{
 			_context.Shell.SetValueFromRenderer(Shell.FlyoutIsPresentedProperty, true);

Xamarin.Forms.Platform.iOS/Xamarin.Forms.Platform.iOS.csproj

@@ -40,9 +40,6 @@
     <Reference Include="Xamarin.iOS" />
     <Reference Include="System.Net.Http" />
   </ItemGroup>
-  <ItemGroup>
-    <BundleResource Include="Resources\3bar%402x.png" />
-  </ItemGroup>
   <ItemGroup>
     <Compile Include="$(MSBuildThisFileDirectory)ContextActionCell.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)ContextScrollViewDelegate.cs" />
@@ -266,8 +263,5 @@
       <Link>Properties\GlobalAssemblyInfo.cs</Link>
     </Compile>
   </ItemGroup>
-  <ItemGroup>
-    <BundleResource Include="Resources\3bar.png" />
-  </ItemGroup>
   <ItemGroup />
 </Project>