[iOS] Fixes for iOS11 (#1238)

* [iOS] Add SafeArea support * [iOS] Only apply SafeArea on iOS11 or newer * [iOS] Handle SafeAreaInsets on ViewCell and GroupCell * [iOS] Set page padding from safe area * [Controls] Use SafeArea PS * [iOS] Add platform specific for LargeTiles * [iOS] Add LargeTitleDisplayMode platform specific for ios11 * [iOS] Fix page size when large title collapses * [iOS] Add platform specific to expose SafeAreaInsets from iOS11 * [Controls] Large titles iOS specific gallery page * [iOS] Remove comment code on PS example * [Controls] Add gallery sample for Safe Area PS * [iOS] Inside a TabbedPage safe area bottom is handle by UITabViewController * [Core,iOS]If we are not using safearea set the padding to the default * [iOS] Revert SafeAreas on navpage * [iOS] Fix safe area inset for ViewCell * [iOS] Handle ViewCell margin correctly on iOS11 * [Core,iOS] Rename to UsingSafeArea, use BPKey instead for SafeAreaInsets * [Core,iOS] Rename to UsingLargeTitles * [iOS,Core] Rename to PrefersLargeTitles
xamarin · Nov 2, 2017 · 0426994 · 0426994
1 parent f026776
commit 0426994
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Showing 18 changed files with 1,244 additions and 8 deletions.
diff --git a/Xamarin.Forms.Controls/App.cs b/Xamarin.Forms.Controls/App.cs
@@ -5,6 +5,7 @@
 using System.Threading.Tasks;
 using Xamarin.Forms.Internals;
 using Xamarin.Forms.PlatformConfiguration;
+using Xamarin.Forms.PlatformConfiguration.iOSSpecific;
 using Xamarin.Forms.PlatformConfiguration.WindowsSpecific;
 
 namespace Xamarin.Forms.Controls
@@ -47,10 +48,14 @@ public App()
 
 		public Page CreateDefaultMainPage()
 		{
+			var layout = new StackLayout { BackgroundColor = Color.Red };
+			layout.Children.Add(new Label { Text ="This is master Page" });
+			var master = new ContentPage { Title = "Master", Content = layout,  BackgroundColor = Color.SkyBlue };
+			master.On<iOS>().SetUseSafeArea(true);
 			return new MasterDetailPage
 			{
 				AutomationId = DefaultMainPageId,
-				Master = new ContentPage { Title = "Master", Content = new View { BackgroundColor = Color.Red } },
+				Master = master,
 				Detail = CoreGallery.GetMainPage()
 			};
 		}

diff --git a/Xamarin.Forms.Controls/CoreGallery.cs b/Xamarin.Forms.Controls/CoreGallery.cs
@@ -11,6 +11,8 @@
 using Xamarin.Forms.Controls.GalleryPages;
 using Xamarin.Forms.CustomAttributes;
 using Xamarin.Forms.Internals;
+using Xamarin.Forms.PlatformConfiguration;
+using Xamarin.Forms.PlatformConfiguration.iOSSpecific;
 
 namespace Xamarin.Forms.Controls
 {
@@ -33,6 +35,7 @@ internal class CoreContentPage : ContentPage
 	{
 		public CoreContentPage ()
 		{
+			On<iOS>().SetUseSafeArea(true);
 			AutomationId = "ContentPageRoot";
 			Content = new StackLayout { Children = { new CoreRootView (), new CorePageView (this, NavigationBehavior.PushModalAsync) } };
 		}
@@ -80,6 +83,8 @@ public CoreNavigationPage ()
 				return false;
 			});
 
+			On<iOS>().SetPrefersLargeTitles(true);
+
 			Navigation.PushAsync (new CoreRootPage (this));
 		}
 	}

diff --git a/Xamarin.Forms.Controls/GalleryPages/PlatformSpecificsGalleries/LargeTitlesPageiOS.cs b/Xamarin.Forms.Controls/GalleryPages/PlatformSpecificsGalleries/LargeTitlesPageiOS.cs
@@ -0,0 +1,59 @@
+using System;
+using System.Windows.Input;
+using Xamarin.Forms.PlatformConfiguration;
+using Xamarin.Forms.PlatformConfiguration.iOSSpecific;
+
+namespace Xamarin.Forms.Controls.GalleryPages.PlatformSpecificsGalleries
+{
+	public class LargeTitlesPageiOS : ContentPage
+	{
+		public LargeTitlesPageiOS(ICommand restore)
+		{
+			Title = "Large Titles";
+
+			var offscreenPageLimit = new Label();
+			var content = new StackLayout
+			{
+				VerticalOptions = LayoutOptions.Fill,
+				HorizontalOptions = LayoutOptions.Fill,
+				Children =
+				{
+					new Button
+					{
+						Text = "LargeTitleDisplayMode.Never",
+						Command = new Command(() => On<iOS>().SetLargeTitleDisplay(LargeTitleDisplayMode.Never))
+					},
+					new Button
+					{
+						Text = "LargeTitleDisplayMode.Always",
+						Command = new Command(() => On<iOS>().SetLargeTitleDisplay(LargeTitleDisplayMode.Always))
+					},
+					new Button
+					{
+						Text = "LargeTitleDisplayMode.Automatic -> next page will have same LargeTitleDisplayMode as this one",
+						Command = new Command(async () =>{
+							var page = new ContentPage { Title = "Page Title" };
+							page.On<iOS>().SetLargeTitleDisplay(LargeTitleDisplayMode.Automatic);
+							await Navigation.PushAsync(page);
+						} )
+					},
+					new Button
+					{
+						Text = "Tooggle UseLargeTitles on Navigation",
+						Command = new Command( () =>{
+							var navPage = (Parent as NavigationPage);
+							navPage.On<iOS>().SetPrefersLargeTitles(!navPage.On<iOS>().PrefersLargeTitles());
+						} )
+					},
+					offscreenPageLimit
+				}
+			};
+
+			var restoreButton = new Button { Text = "Back To Gallery" };
+			restoreButton.Clicked +=  async (sender, args) => await Navigation.PopAsync();
+			content.Children.Add(restoreButton);
+
+			Content = content;
+		}
+	}
+}