I suspended the app as per this post in StackOverflow.

When I click on Resume menu item, the OnResume is not called. But if I go to the app list and start the app, after suspend, the OnResume() is called.

What is the difference?

one page of my application it contains carousal view it works fine , but sometime when i move between pages i got this error "unfortunately my application has stopped ".
the problem is : when i use emulator this error does not appear, but when i use my real device this happen sometimes.
another note when i debug the application on the real device and when this error appear , application stopped but didn't go back to the code.

any suggestion please ?

In UWP app, I need to refresh a list when the app is resumed. Since the OnResume() is in App.cs, how can I refresh a list in, say, MainPage? Will OnResume() fire any events in the page that is being resumed?

I am trying to write first UITest for my Forms App. When I try to run the iOS test, it throws the following exception. Is this a known issue?

I am using Xamarin studio 6.1.3 (build 19).
The version of Xamarin.UITest package 2.0.5.

The test is very basic

    [Test]
        public void AppLaunches ()
        {
            try {
                app.WaitForElement ("Waiting for fake element", "Timeout", new TimeSpan (0, 0, 20));
            } catch (TimeoutException ex) {
                int i = 5;
            }

            app.Screenshot ("Welcome screen.");
            app.Tap ("CheckinButton");
            app.Screenshot ("New checkin screen.");
        }

Here are the exception details:

SetUp : System.Xml.XmlException : '', hexadecimal value 0x01, is an invalid character. Line 11, position 11.
Stack trace:
  at Xamarin.UITest.iOS.iOSAppLauncher.LaunchAppLocal (Xamarin.UITest.Configuration.IiOSAppConfiguration appConfiguration, Xamarin.UITest.Shared.Http.HttpClient httpClient, System.Boolean clearAppData) [0x0020a] in <e747267e258a4a668973c7ca7e9014a8>:0
  at Xamarin.UITest.iOS.iOSAppLauncher.LaunchApp (Xamarin.UITest.Configuration.IiOSAppConfiguration appConfiguration, Xamarin.UITest.Shared.Http.HttpClient httpClient, Xamarin.UITest.TestCloud.TestCloudiOSAppConfiguration testCloudAppConfiguration, Xamarin.UITest.Shared.Http.HttpClient testCloudWsClient, Xamarin.UITest.Shared.Http.HttpClient xtcServicesClient, System.Boolean testCloudUseDeviceAgent) [0x0007a] in <e747267e258a4a668973c7ca7e9014a8>:0
  at Xamarin.UITest.iOS.iOSApp..ctor (Xamarin.UITest.Configuration.IiOSAppConfiguration appConfiguration) [0x00302] in <e747267e258a4a668973c7ca7e9014a8>:0
  at Xamarin.UITest.Configuration.iOSAppConfigurator.StartApp (Xamarin.UITest.Configuration.AppDataMode appDataMode) [0x00017] in <e747267e258a4a668973c7ca7e9014a8>:0
  at UITest.AppInitializer.StartApp (Xamarin.UITest.Platform platform) [0x0001f] in /Users/Prashant/projects/instacheckin-mobile/instacheckin-mobile-2/UITest/AppInitializer.cs:38
  at UITest.Tests.BeforeEachTest () [0x00008] in /Users/Prashant/projects/instacheckin-mobile/instacheckin-mobile-2/UITest/Tests.cs:26
  at (wrapper managed-to-native) System.Reflection.MonoMethod:InternalInvoke (System.Reflection.MonoMethod,object,object[],System.Exception&)
  at System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00038] in /private/tmp/source-mono-4.6.0/bockbuild-mono-4.6.0-branch/profiles/mono-mac-xamarin/build-root/mono-x86/mcs/class/corlib/System.Reflection/MonoMethod.cs:305

Hi everybody,
i am developing a radial menu with skia sharp on xamarin forms

here is the function that draws the control

    SKCanvasView ElementBuilder()
    {
        var element = new SKCanvasView();
        element.PaintSurface += (sender, e) =>
        {
            diameter = (float)(Width / 1.5);
            var canvas = e.Surface.Canvas;
            canvas.Clear(SKColors.Transparent);
            canvas.Translate((float)(Width), (float)(Height));
            var angles = new float[5] { 234, 306, 18, 90, 162 };
            using (var path = new SKPath())
            {
                foreach (var item in angles)
                {
                    path.ArcTo(new SKRect(-diameter, -diameter, diameter, diameter), item, 72, true);
                }
                canvas.DrawPath(path, elementPaint);
            }
            using (var path = new SKPath())
            {
                foreach (var item in angles)
                {
                    path.LineTo(DegreesToXY(item, (-diameter - (strokeWidth / 2))));
                    path.MoveTo(0, 0);
                    path.LineTo(DegreesToXY(item + 72, (-diameter - (strokeWidth / 2))));
                    path.MoveTo(0, 0);
                }
                canvas.DrawPath(path, backgroundPaint);
            }

        };
        return element;
    }

Works perfectly on every iOS device I have tested and on my personal device which i used during development (Sony xperia z3 compact)
On every other Android device, with any version of the os the sizing of the view is different

I upload here 3 screenshot (IPhone 7 simulator, Xperia z3 compact, Nexus 5)

Every Android device renders the same (the third image), except the sony
How to give the correct size to the view?

Thank in advance

Hi
Do you know how is possible enable the support from GZIP in App Service Mobile ?
I'm using
HttpClientHandler mHttpClientHandler = new HttpClientHandler();
mHttpClientHandler.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;
client = new MobileServiceClient(applicationURL, mHttpClientHandler );

All works but.... when I sniff related traffic .... no gzip.
I'm using Microsoft.Azure.Mobile.Client vers. 3.1.0

Tnx

Maybe I'm not searching for the right thing here, but by the life of me I cannot find a good sample of how to layer one control over the other, in XAML.

For instance I have a map control and I want to add a box with some data and buttons on top of it, much like how RunKeeper did;

I've did some experimenting with the Relative- and AbsoluteLayout, but I can't quite figure out how to do it.
Is there anyone who could give me a little push in the right direction with this?

Here is what I have so far;

 <StackLayout Orientation="Vertical">
   <maps:Map x:Name="MapControl" HasZoomEnabled="True" IsShowingUser="True" MapType="Street"></maps:Map>
   <Grid>
     <Grid.ColumnDefinitions>
       <ColumnDefinition Width="*" />
       <ColumnDefinition Width="*" />
       <ColumnDefinition Width="*" />
     </Grid.ColumnDefinitions>

     <Button Grid.Column="0" Text="{Binding ButtonCaption}" Command="{Binding StartStopTripCommand}" />
     <Button Grid.Column="1" Text="Verstuur" Command="{Binding SendTripCommand}" />
     <Label Grid.Column="2" Text="{Binding CurrentSpeedDescription}" />
   </Grid>
 </StackLayout>

And the grid would be floating at the top, instead of now being stacked below.

Hello guys,
I am developing an application in Xamarin Forms, I am trying to set in the Android status bar and transparent bar action with an image that will overlap. As in the image below. Any idea? thanks

The entry background color is not working on Android 4.2.2 using GT-I9295 (Galaxy S4).

Steps to reproduce :

Pull Latest https://github.com/xamarin/xamarin-forms-samples
Open EntryDemoPage
Change Entry Background color to Xamarin.Forms.Color.White
Run on device (background color is not white)

Works correctly on 4.4.3 Nexus 5. Looks like on 4.2.2 it is setting the Border color instead of the Background color

Important notes

• Xamarin.Forms 2.3.3 depends on a Xamarin installation of Cycle 8. Users upgrading from Xamarin.Forms 2.3.2 (or earlier) will experience numerous compile errors if they attempt to build without first upgrading their Xamarin installation.
• When upgrading Xamarin.Forms take care not to simply "update all" as that will update the Xamarin.Android.Support packages to an incompatible version. More info here.
• In 2.3.3 we are deprecating Classic support (More info here).

Breaking changes

• [UWP] TabbedPage ContentPresenter is now of type FormsPresenter instead of TabbedPagePresenter. This is an internal change only that will only affect users explicitly targeting TabbedPagePresenter in the UWP project.

2.3.3.193

Nuget package here.

Release Notes

Nuspec change to Android dependencies. When targeting framework 7.0 or greater you many use Android support libraries with API 23 or greater, and Maps with API 29 or greater.
No other changes.

2.3.3.180

Nuget package here.

Release Notes

Add authenticode signing.
No other changes.

2.3.3 sr1

Nuget package here.

Bug Fixes

• 47707 - "47707 – Page.Toolbar is covering page.content with XF.UWP on Windows 10 phone" (PR)
• 47295 - "[UWP] Toolbar is Clipped When Using a NavigationPage" (PR)
• 47950 - "2.3.3 Regression: XAML compilation fails with behavior property and StaticResource" (PR)
• 47971 - "XF UWP ListView Items no longer display" (PR)
• 48105 - "Xamarin.Forms.Theme ResourceDictionary MergedWith fails in current build" (PR)
• 48158 - "Hidden controls become transparent, static property does not bind" (PR)
• 48242 - "Binding to constants not working any more in Xamarin Forms 2.3.3" (PR)
• 48554 - "Bound static property does not call setter in custom view" (PR)
• 48726 - "[UWP] Toolbar Covering Page Content" (PR)
• [XamlC] assigned derived type to generic BP (PR)
• [Xaml] support non-int enums (PR)

2.3.3 stable

Nuget package here.

Bug Fixes

• 46195 - "Navigation Stack Errors in Xamarin.Forms.2.3.3.163-pre3" (PR)

2.3.3-pre4

Nuget package here.

Bug Fixes

• 44338 - "Displaying context action causes ArgumentNullException when another item's context actions are already displayed on iOS10." (PR)
• "[Win] Toolbar placement works with initial value" (PR)
• "[Android] SoftInputMode works with initial value" (PR)

2.3.3-pre3

Nuget package here.

Bug Fixes

• 44129 - "[Forms Android] Removing and adding items to TabbedPage BindingContext crashes the app when VM uses MvvmLight property Set()-method" (PR)
• 44166 - "41166 - Fix MasterDetailPage/NavigationPage leaks on iPad" (PR)
• 44596 - "Grey/Blank Screen when switching MainPage to MasterDetail with TabbedPage" (PR)
• 45010 - "[2.3.3] 45010 – Forms Sample "WorkingWithListview" throw exception with WinPhone8.1" (PR)
• 44166 - "MasterDetailPage instances do not get disposed upon GC; instance accumulation crashes app with OOM error using Forms 2.3.2.118-pre1 and AppCompat" (PR)
• Don't unsubscribe/resubscribe the listener to the same INPC (PR)
• 44886 - "UWP Listview ItemSelected event triggered twice for each selection" (PR)
• [iOS] Fixes KVO native binding (PR)
• Make CreateNativeControl virtual instead of abstract (PR)

• 43993 - "iOS: ListView size does not return to normal after keyboard disappears" (PR)

• 39768 - "PanGestureRecognizer sometimes won't fire completed event when dragging very slowly" (PR)

• 42602 - "Custom BoxView Renderer Does Not Render All Its Children Elements" (PR)
• [Xaml] Xaml native views and bindings for WP8.1 (PR)
• [XamlC] Compiled converters (PR)
• [Xaml] allow compatible arguments for x:Factory (PR)
• [XAMLC] specify type and default value for native bindings (PR)
• [2.3.3-pre2] [XamlC] supports enum and consts in x:Static (PR)
• Reuse Handler when invoking on main thread (PR)

2.3.3-pre2

Nuget package here.

New Features

Support native view declaration in Xaml, and native Bindings

The following Xaml is valid, and works as expected:

<?xml version="1.0" encoding="UTF-8"?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:ios="clr-namespace:UIKit;assembly=Xamarin.iOS;targetPlatform=iOS"
             xmlns:androidWidget="clr-namespace:Android.Widget;assembly=Mono.Android;targetPlatform=Android"
             xmlns:formsandroid="clr-namespace:Xamarin.Forms;assembly=Xamarin.Forms.Platform.Android;targetPlatform=Android"
             xmlns:win="clr-namespace:Windows.UI.Xaml.Controls;assembly=Windows, Version=255.255.255.255, Culture=neutral, PublicKeyToken=null, ContentType=WindowsRuntime;targetPlatform=Windows"
       x:Class="Xamarin.Forms.Controls.XamlNativeViews">
    <ContentPage.Content>
        <ios:UILabel Text="{Binding NativeText}" View.HorizontalOptions="Start"/>
        <androidWidget:TextView Text="{Binding NativeText}" x:Arguments="{x:Static formsandroid:Forms.Context}" />
        <win:TextBlock Text="Foo"/>
    </ContentPage.Content>
</ContentPage>

• native views are automagically wrapped into the appropriate wrapper
• xmlns defined on a non-matching targetPlatform (see TargetPlatform enumeration) are ignored
• you can bind to property of native views. A proxy is created on the fly for supporting 2-Way bindings if possible. If the native property doesn't implements INPC, or support Observable (on iOS), or is a DependencyProperty (on UWP), you can pass an UpdateSourceEventName parameter to the binding expression.
• if you set, or bind to, attached BindableProperty to a native view that will be wrapped in a X.F.View, those property values and binding are transferred to the wrapper. See HorizontalOptions in the sample above.

Platform Specifics

Introducing Platform Specifics! Features or behaviors that apply to one platform only can now be implemented without requiring custom renderers. These new features/behaviors can then be accessed easily via a fluent code API or XAML.

Vendors can easily add their own Platform Specifics by attaching Effects to them (see 63a924d and 1f9482e for complete example).

This feature implements the framework that enables the new API and also includes several examples of platform specific features, which can be previewed using the Platform Specifics gallery page:

• Blur support for any VisualElement on iOS
• Translucent navigation bar on iOS
• Partially collapsed navigation bar (with icons!) on MasterDetailPage on Windows
• Toolbar placement options on Windows
• AdjustResize/AdjustPan on Android (known issue: AdjustResize disables status bar color)

Bug Fixes

• 32733 - "32733 – Switching Activity crash in 1.4.4.6392" (PR)
• 35132 - "35132 – Pages are not collected when using a Navigationpage"
• 39768 - "PanGestureRecognizer sometimes won't fire completed event when dragging very slowly" (PR)
• 39908 - "Back button hit quickly results in jumbled pages" (PR)
• 41463 - "CarouselView Crashes with "Sequence Does not Contain a Matching Element""
• 42061 - "App crashes when registering an app link entry with invalid thumbnail url" (PR)
• 42112 - "42112 - CarouselView throws error on Android while moving"
• 42341 - "Page not removed from NavigationStack when hit Back quickly on iOS" (PR)
• 42519 - "Text Truncation in UWP"
• 42697 - "Slow swipe - System.InvalidOperationException: Sequence contains more than one element [CarouselView]"
• 43230 - "DisplayAlert returns unexpected value when Escape key hit on UWP" (PR)
• 43328 - "DisplayActionSheet() double-tap NullReferenceException crash Win8.1" (PR)
• 43354 - "Button IsEnabled binding is position dependent" (PR)
• 43450 - "Faulty syntax of Grid.RowDefinition wasn't caught with XamlC"
• 43516 - "[UWP] Changing FontAttribute on a label to NONE changes font size as well" (PR)
• 43530 - "[Android] Resuming app throws IllegalStateException from fragment manager"
• 43726 - "Setting TabbedPage.ItemsSource to Null Causes Crash" (PR)
• 43774 - "Appearing does not trigger for the first time for Tabpages in Android" (PR)
• 43892 - "Xamarin.Forms.TabbedPage with FormsAppCompatActivity OnAppearing Troubles"
• 44056 - "Picker Focused/Unfocused events not fired on iOS 10 preview" (PR)

Other fixes

• iOS10 fixes

2.3.3-pre1

Only internal. There were no public artifacts/nuget packages for pre1.

i.e.

`

    <Button Clicked="OnLoginClicked"
        Image="Images/Login/loginWithFacebookButton.png"
        IsEnabled="{!(Binding IsLoggingIn)}"  <<<<<<< this is the bit that I don't know how to do.

`

Do I just have to add a waiting variable too? (hope not).

Clicked answer on the wrong one!! - this is my preferred answer:

<Button Clicked="OnLoginClicked"
            Image="Images/Login/loginWithFacebookButton.png"
            IsEnabled="{!(Binding IsLoggingIn.Equals(false))}"

Hey all,

Anybody face this before? When I remove any item but the last one from my Collection (listview) and try to add an item right after that, it fails with System.NullReferenceException. Here's where the debugger points to and the stacktrace. Thx!

Where debugger points to this in code:

**return new ViewCell**
                {
                    View = new StackLayout
                    {
                        Orientation = StackOrientation.Horizontal,
                        Spacing = 10,
                        Padding = 6,
                        Children =
                        {
                            addressIcon,
                            listLabel
                        }
                    }
                };

Stacktrace:

Unhandled Exception:

System.NullReferenceException: Object reference not set to an instance of an object.

07-05 21:28:06.643 D/Mono ( 4003): DllImport attempting to load: '/system/lib/liblog.so'.
07-05 21:28:06.643 D/Mono ( 4003): DllImport loaded library '/system/lib/liblog.so'.
07-05 21:28:06.643 D/Mono ( 4003): DllImport searching in: '/system/lib/liblog.so' ('/system/lib/liblog.so').
07-05 21:28:06.653 D/Mono ( 4003): Searching for '__android_log_print'.
07-05 21:28:06.653 D/Mono ( 4003): Probing '__android_log_print'.
07-05 21:28:06.653 D/Mono ( 4003): Found as '__android_log_print'.
07-05 21:28:06.663 I/MonoDroid( 4003): UNHANDLED EXCEPTION:
07-05 21:28:06.683 I/MonoDroid( 4003): System.NullReferenceException: Object reference not set to an instance of an object.
07-05 21:28:06.683 I/MonoDroid( 4003): at Xamarin.Forms.Platform.Android.VisualElementPackager.RemoveChild (Xamarin.Forms.VisualElement view) [0x00014] in C:\BuildAgent\work\aad494dc9bc9783\Xamarin.Forms.Platform.Android\VisualElementPackager.cs:139
07-05 21:28:06.683 I/MonoDroid( 4003): at Xamarin.Forms.Platform.Android.VisualElementPackager.OnChildRemoved (System.Object sender, Xamarin.Forms.ElementEventArgs e) [0x0000f] in C:\BuildAgent\work\aad494dc9bc9783\Xamarin.Forms.Platform.Android\VisualElementPackager.cs:125
07-05 21:28:06.693 I/MonoDroid( 4003): at (wrapper delegate-invoke) System.EventHandler

1[Xamarin.Forms.ElementEventArgs]:invoke_void_object_TEventArgs (object,Xamarin.Forms.ElementEventArgs)
07-05 21:28:06.693 I/MonoDroid( 4003):   at Xamarin.Forms.Element.OnChildRemoved (Xamarin.Forms.Element child) [0x0000f] in C:\BuildAgent\work\aad494dc9bc9783\Xamarin.Forms.Core\Element.cs:356
07-05 21:28:06.693 I/MonoDroid( 4003):   at Xamarin.Forms.VisualElement.OnChildRemoved (Xamarin.Forms.Element child) [0x00000] in C:\BuildAgent\work\aad494dc9bc9783\Xamarin.Forms.Core\VisualElement.cs:577
07-05 21:28:06.693 I/MonoDroid( 4003):   at Xamarin.Forms.Layout

1[T].OnChildRemoved (Xamarin.Forms.Element child) [0x00000] in C:\BuildAgent\work\aad494dc9bc9783\Xamarin.Forms.Core\Layout.cs:39
07-05 21:28:06.693 I/MonoDroid( 4003): at Xamarin.Forms.Layout.OnInternalRemoved (Xamarin.Forms.View view) [0x00012] in C:\BuildAgent\work\aad494dc9bc9783\Xamarin.Forms.Core\Layout.cs:412
07-05 21:28:06.693 I/MonoDroid( 4003): at Xamarin.Forms.Layout.InternalChildrenOnCollectionChanged (System.Object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e) [0x0002f] in C:\BuildAgent\work\aad494dc9bc9783\Xamarin.Forms.Core\Layout.cs:376
07-05 21:28:06.693 I/MonoDroid( 4003): at (wrapper delegate-invoke) :invoke_void_object_NotifyCollectionChangedEventArgs (object,System.Collections.Specialized.NotifyCollectionChangedEventArgs)
07-05 21:28:06.693 I/MonoDroid( 4003): at System.Collections.ObjectModel.ObservableCollection

1[T].OnCollectionChanged (System.Collections.Specialized.NotifyCollectionChangedEventArgs e) [0x00012] in /Users/builder/data/lanes/3415/7db2aac3/source/mono/external/referencesource/System/compmod/system/collections/objectmodel/observablecollection.cs:288
07-05 21:28:06.693 I/MonoDroid( 4003):   at System.Collections.ObjectModel.ObservableCollection

1[T].OnCollectionChanged (NotifyCollectionChangedAction action, System.Object item, Int32 index) [0x00000] in /Users/builder/data/lanes/3415/7db2aac3/source/mono/external/referencesource/System/compmod/system/collections/objectmodel/observablecollection.cs:351
07-05 21:28:06.693 I/MonoDroid( 4003): at System.Collections.ObjectModel.ObservableCollection

1[T].RemoveItem (Int32 index) [0x0002b] in /Users/builder/data/lanes/3415/7db2aac3/source/mono/external/referencesource/System/compmod/system/collections/objectmodel/observablecollection.cs:205
07-05 21:28:06.693 I/MonoDroid( 4003):   at System.Collections.ObjectModel.Collection

1[T].Remove (System.Collections.ObjectModel.T item) [0x0002d] in /Users/builder/data/lanes/3415/7db2aac3/source/mono/external/referencesource/mscorlib/system/collections/objectmodel/collection.cs:113
07-05 21:28:06.693 I/MonoDroid( 4003): at Xamarin.Forms.Layout.OnInternalAdded (Xamarin.Forms.View view) [0x0000b] in C:\BuildAgent\work\aad494dc9bc9783\Xamarin.Forms.Core\Layout.cs:399
07-05 21:28:06.693 I/MonoDroid( 4003): at Xamarin.Forms.Layout.InternalChildrenOnCollectionChanged (System.Object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e) [0x00089] in C:\BuildAgent\work\aad494dc9bc9783\Xamarin.Forms.Core\Layout.cs:391
07-05 21:28:06.693 I/MonoDroid( 4003): at (wrapper delegate-invoke) :invoke_void_object_NotifyCollectionChangedEventArgs (object,System.Collections.Specialized.NotifyCollectionChangedEventArgs)
07-05 21:28:06.693 I/MonoDroid( 4003): at System.Collections.ObjectModel.ObservableCollection

1[T].OnCollectionChanged (System.Collections.Specialized.NotifyCollectionChangedEventArgs e) [0x00012] in /Users/builder/data/lanes/3415/7db2aac3/source/mono/external/referencesource/System/compmod/system/collections/objectmodel/observablecollection.cs:288
07-05 21:28:06.693 I/MonoDroid( 4003):   at System.Collections.ObjectModel.ObservableCollection

1[T].OnCollectionChanged (NotifyCollectionChangedAction action, System.Object item, Int32 index) [0x00000] in /Users/builder/data/lanes/3415/7db2aac3/source/mono/external/referencesource/System/compmod/system/collections/objectmodel/observablecollection.cs:351
07-05 21:28:06.693 I/MonoDroid( 4003): at System.Collections.ObjectModel.ObservableCollection

1[T].InsertItem (Int32 index, System.Collections.ObjectModel.T item) [0x00024] in /Users/builder/data/lanes/3415/7db2aac3/source/mono/external/referencesource/System/compmod/system/collections/objectmodel/observablecollection.cs:219
07-05 21:28:06.693 I/MonoDroid( 4003):   at System.Collections.ObjectModel.Collection

1[T].Add (System.Collections.ObjectModel.T item) [0x00023] in /Users/builder/data/lanes/3415/7db2aac3/source/mono/external/referencesource/mscorlib/system/collections/objectmodel/collection.cs:67
07-05 21:28:06.703 I/MonoDroid( 4003): at Xamarin.Forms.ObservableWrapper

2[TTrack,TRestrict].Add (Xamarin.Forms.TRestrict item) [0x0004b] in C:\BuildAgent\work\aad494dc9bc9783\Xamarin.Forms.Core\ObservableWrapper.cs:35
07-05 21:28:06.703 I/MonoDroid( 4003):   at myPT.AddressListView+<>c__DisplayClass4_0.<.ctor>b__0 () [0x0004c] in C:\Users\Ryan J\Documents\Visual Studio 2015\Projects\myPT\myPT\myPT\Views\AddressListView.cs:41
07-05 21:28:06.703 I/MonoDroid( 4003):   at Xamarin.Forms.ElementTemplate.CreateContent () [0x00026] in C:\BuildAgent\work\aad494dc9bc9783\Xamarin.Forms.Core\ElementTemplate.cs:78
07-05 21:28:06.703 I/MonoDroid( 4003):   at Xamarin.Forms.DataTemplateExtensions.CreateContent (Xamarin.Forms.DataTemplate self, System.Object item, Xamarin.Forms.BindableObject container) [0x00014] in C:\BuildAgent\work\aad494dc9bc9783\Xamarin.Forms.Core\DataTemplateExtensions.cs:12
07-05 21:28:06.703 I/MonoDroid( 4003):   at Xamarin.Forms.TemplatedItemsList

2[TView,TItem].CreateContent (Int32 index, System.Object item, Boolean insert) [0x00000] in C:\BuildAgent\work\aad494dc9bc9783\Xamarin.Forms.Core\TemplatedItemsList.cs:508
07-05 21:28:06.703 I/MonoDroid( 4003): at Xamarin.Forms.TemplatedItemsList

2[TView,TItem].ConvertContent (Int32 startingIndex, IList items, Boolean forceCreate, Boolean setIndex) [0x00014] in C:\BuildAgent\work\aad494dc9bc9783\Xamarin.Forms.Core\TemplatedItemsList.cs:632
07-05 21:28:06.703 I/MonoDroid( 4003):   at Xamarin.Forms.TemplatedItemsList

2[TView,TItem].OnProxyCollectionChanged (System.Object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e, Boolean fixWindows) [0x0017e] in C:\BuildAgent\work\aad494dc9bc9783\Xamarin.Forms.Core\TemplatedItemsList.cs:962
07-05 21:28:06.703 I/MonoDroid( 4003): at Xamarin.Forms.TemplatedItemsList

2[TView,TItem].OnProxyCollectionChanged (System.Object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e) [0x00000] in C:\BuildAgent\work\aad494dc9bc9783\Xamarin.Forms.Core\TemplatedItemsList.cs:914
07-05 21:28:06.703 I/MonoDroid( 4003):   at Xamarin.Forms.ListProxy.OnCollectionChanged (System.Collections.Specialized.NotifyCollectionChangedEventArgs e) [0x0000a] in C:\BuildAgent\work\aad494dc9bc9783\Xamarin.Forms.Core\ListProxy.cs:229
07-05 21:28:06.703 I/MonoDroid( 4003):   at Xamarin.Forms.ListProxy+<>c__DisplayClass32_0.<OnCollectionChanged>b__0 () [0x00018] in C:\BuildAgent\work\aad494dc9bc9783\Xamarin.Forms.Core\ListProxy.cs:202
07-05 21:28:06.703 I/MonoDroid( 4003):   at Xamarin.Forms.ListProxy.OnCollectionChanged (System.Object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e) [0x000a0] in C:\BuildAgent\work\aad494dc9bc9783\Xamarin.Forms.Core\ListProxy.cs:221
07-05 21:28:06.703 I/MonoDroid( 4003):   at Xamarin.Forms.ListProxy+WeakNotifyProxy.OnCollectionChanged (System.Object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e) [0x00031] in C:\BuildAgent\work\aad494dc9bc9783\Xamarin.Forms.Core\ListProxy.cs:385
07-05 21:28:06.703 I/MonoDroid( 4003):   at System.Collections.ObjectModel.ObservableCollection

1[T].OnCollectionChanged (System.Collections.Specialized.NotifyCollectionChangedEventArgs e) [0x00012] in /Users/builder/data/lanes/3415/7db2aac3/source/mono/external/referencesource/System/compmod/system/collections/objectmodel/observablecollection.cs:288
07-05 21:28:06.703 I/MonoDroid( 4003): at System.Collections.ObjectModel.ObservableCollection

1[T].OnCollectionChanged (NotifyCollectionChangedAction action, System.Object item, Int32 index) [0x00000] in /Users/builder/data/lanes/3415/7db2aac3/source/mono/external/referencesource/System/compmod/system/collections/objectmodel/observablecollection.cs:351
07-05 21:28:06.703 I/MonoDroid( 4003):   at System.Collections.ObjectModel.ObservableCollection

1[T].InsertItem (Int32 index, System.Collections.ObjectModel.T item) [0x00024] in /Users/builder/data/lanes/3415/7db2aac3/source/mono/external/referencesource/System/compmod/system/collections/objectmodel/observablecollection.cs:219
07-05 21:28:06.703 I/MonoDroid( 4003): at System.Collections.ObjectModel.Collection`1[T].Add (System.Collections.ObjectModel.T item) [0x00023] in /Users/builder/data/lanes/3415/7db2aac3/source/mono/external/referencesource/mscorlib/system/collections/objectmodel/collection.cs:67
07-05 21:28:06.703 I/MonoDroid( 4003): at myPT.Pages.AddressAdd.AddBtn_Clicked (System.Object sender, System.EventArgs e) [0x000d6] in C:\Users\Ryan J\Documents\Visual Studio 2015\Projects\myPT\myPT\myPT\Pages\AddressAdd.cs:97
07-05 21:28:06.703 I/MonoDroid( 4003): at Xamarin.Forms.Button.Xamarin.Forms.IButtonController.SendClicked () [0x00020] in C:\BuildAgent\work\aad494dc9bc9783\Xamarin.Forms.Core\Button.cs:122
07-05 21:28:06.703 I/MonoDroid( 4003): at Xamarin.Forms.Platform.Android.ButtonRenderer+ButtonClickListener.OnClick (Android.Views.View v) [0x0000f] in C:\BuildAgent\work\aad494dc9bc9783\Xamarin.Forms.Platform.Android\Renderers\ButtonRenderer.cs:269
07-05 21:28:06.703 I/MonoDroid( 4003): at Android.Views.View+IOnClickListenerInvoker.n_OnClick_Landroid_view_View_ (IntPtr jnienv, IntPtr native__this, IntPtr native_v) [0x00011] in /Users/builder/data/lanes/3415/7db2aac3/source/monodroid/src/Mono.Android/platforms/android-23/src/generated/Android.Views.View.cs:1806
07-05 21:28:06.703 I/MonoDroid( 4003): at (wrapper dynamic-method) System.Object:37af5531-783b-47a6-b78a-63d4a592ed71 (intptr,intptr,intptr)
07-05 21:28:06.773 D/Mono ( 4003): DllImport searching in: '__Internal' ('(null)').
07-05 21:28:06.773 D/Mono ( 4003): Searching for 'java_interop_jnienv_throw'.
07-05 21:28:06.773 D/Mono ( 4003): Probing 'java_interop_jnienv_throw'.
07-05 21:28:06.783 D/Mono ( 4003): Found as 'java_interop_jnienv_throw'.
An unhandled exception occured.

07-05 21:28:08.033 E/mono ( 4003):
07-05 21:28:08.033 E/mono ( 4003): Unhandled Exception:
07-05 21:28:08.033 E/mono ( 4003): System.NullReferenceException: Object reference not set to an instance of an object.
07-05 21:28:08.033 E/mono ( 4003): at (wrapper dynamic-method) System.Object:37af5531-783b-47a6-b78a-63d4a592ed71 (intptr,intptr,intptr)
07-05 21:28:08.033 E/mono ( 4003): at (wrapper native-to-managed) System.Object:37af5531-783b-47a6-b78a-63d4a592ed71 (intptr,intptr,intptr)
In mgmain JNI_OnLoad
07-05 21:28:08.043 E/mono-rt ( 4003): [ERROR] FATAL UNHANDLED EXCEPTION: System.NullReferenceException: Object reference not set to an instance of an object.
07-05 21:28:08.043 E/mono-rt ( 4003): at (wrapper dynamic-method) System.Object:37af5531-783b-47a6-b78a-63d4a592ed71 (intptr,intptr,intptr)
07-05 21:28:08.043 E/mono-rt ( 4003): at (wrapper native-to-managed) System.Object:37af5531-783b-47a6-b78a-63d4a592ed71 (intptr,intptr,intptr)

I've noticed that my Xamarin Forms projects keep growing in size over time. It used to be just over a 1GB, now its almost at 5GB.

The bulk of the space seems to be in theios/obj/debug, with files that I don't have control over. Is this normal?

Unfortunately my webservice methods now throw this exception only using proxy in android

 System.Net.Http.HttpRequestException: An error occurred while sending the request ---> System.Net.WebException: Error: ConnectFailure (Network is unreachable) ---> System.Net.Sockets.SocketException: Network is unreachable
  at System.Net.Sockets.Socket.Connect (System.Net.EndPoint remoteEP) [0x000cb] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/System/System.Net.Sockets/Socket.cs:1288
  at System.Net.WebConnection.Connect (System.Net.HttpWebRequest request) [0x0019b] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/System/System.Net/WebConnection.cs:195
   --- End of inner exception stack trace ---
  at System.Net.HttpWebRequest.EndGetRequestStream (System.IAsyncResult asyncResult) [0x00043] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/System/System.Net/HttpWebRequest.cs:900
  at System.Threading.Tasks.TaskFactory`1[TResult].FromAsyncCoreLogic (System.IAsyncResult iar, System.Func`2[T,TResult] endFunction, System.Action`1[T] endAction, System.Threading.Tasks.Task`1[TResult] promise, System.Boolean requiresSynchronization) [0x00014] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/referencesource/mscorlib/system/threading/Tasks/FutureFactory.cs:550
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:143
  at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x00047] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:187
  at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x0002e] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:156
  at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x0000b] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:128
  at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1+ConfiguredTaskAwaiter[TResult].GetResult () [0x00000] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:535
  at System.Net.Http.HttpClientHandler+<SendAsync>c__async0.MoveNext () [0x002a7] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/System.Net.Http/System.Net.Http/HttpClientHandler.cs:370
   --- End of inner exception stack trace ---
  at System.Net.Http.HttpClientHandler+<SendAsync>c__async0.MoveNext () [0x0047a] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/System.Net.Http/System.Net.Http/HttpClientHandler.cs:383
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:143
  at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x00047] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:187
  at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x0002e] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:156
  at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x0000b] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:128
  at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1+ConfiguredTaskAwaiter[TResult].GetResult () [0x00000] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:535
  at System.Net.Http.HttpClient+<SendAsyncWorker>c__async0.MoveNext () [0x000a9] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/System.Net.Http/System.Net.Http/HttpClient.cs:276
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:143
  at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x00047] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:187
  at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x0002e] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:156
  at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x0000b] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:128
  at System.Runtime.CompilerServices.TaskAwaiter`1[TResult].GetResult () [0x00000] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:357
  at ClassLibrary.Dao.Conexao+<Redirecionar>d__1.MoveNext

Does anybody have a clue what is going on here?

Hi
I am building a cross-platform windows/android app.
I am using a master detail page.
While on Windows the hamburger menu is displayed correctly, on Android a back button is shown instead. I have tried setting NavigationPage.SetHasBackButton, but it is still shown. Does anyone have an idea how I can get rid of the back button and keep the hamburger menu?

Thanks

hi, I have tried to add a styles.xml to the xamarin.forms.android project in resources/values to change the selected color of a listview but it doesn't works, any idea about this?

<?xml version="1.0" encoding="UTF-8" ?>
<resources>
  <style name="MyTheme" parent="android:style/Theme.Holo.Light">
   <item name="android:colorPressedHighlight">@color/ListViewSelected</item>
   <item name="android:colorLongPressedHighlight">@color/ListViewHighlighted</item>
   <item name="android:colorFocusedHighlight">@color/ListViewSelected</item>
   <item name="android:colorActivatedHighlight">@color/ListViewSelected</item>
   <item name="android:activatedBackgroundIndicator">@color/ListViewSelected</item>
  </style>
<color name="ListViewSelected">#96BCE3</color>
<color name="ListViewHighlighted">#E39696</color>
</resources>

How does this even happen?

So I've spent hours upon hours trying to get this to work, looking at 2 separate examples of how to bind an ObservableCollection to a listview. I can bind to the viewmodel just fine as on hour 3 I created a message dialog to make sure that the list was completely empty by getting some information out of this list. Here is what I've got so far:

XAML
    <ListView ItemsSource="{Binding icitems}">
    <ListView.ItemTemplate>
        <DataTemplate>
            <ViewCell>
                <StackLayout x:Name="ViewCellStackLayout"
                                     Orientation="Horizontal">
                    <Label x:Name="NameLabel"
                                   Text="{Binding itemname}"/>
                    <Label x:Name="ItemNumLabel"
                                   Text="{Binding itemnum}"/>
                    <Label x:Name="ClassLabel"
                                   Text="{Binding classIcitem}"/>
                    <Label x:Name="LookupLabel"
                                   Text="{Binding lookup1}"/>
                    <Label x:Name="UPCNumLabel"
                                   Text="{Binding upcnum}"/>
                    <Label x:Name="BarcodeLabel"
                                   Text="{Binding barcode}"/>
                    <Label x:Name="BuyQTYLabel"
                                   Text="{Binding buyqty_mult}"/>
                    <Label x:Name="ConvLabel"
                                   Text="{Binding conv}"/>
                </StackLayout>
                </ViewCell>
        </DataTemplate>
    </ListView.ItemTemplate>
</ListView>

THE ICITEM CLASS
    public IcItem() { }

    [SQLite.PrimaryKey, SQLite.AutoIncrement]
    public int ID { get; set; }
    public string itemnum { get; set; }
    public string itemname { get; set; }
    public string classIcitem { get; set; }
    public string lookup1 { get; set; }
    public string upcnum { get; set; }
    public string barcode { get; set; }
    public int buyqty_mult { get; set; }
    public int conv { get; set; }
    public DateTime syncDate { get; set; }

VIEWMODEL
private ObservableCollection<IcItem> _icItems;
    public ObservableCollection<IcItem> icitems
    {
        get { return _icItems; }
        set { Set(() => icitems, ref _icItems, value); }
    }

While being so close to finishing my project, I have one issue... While trying to bind results to my labels, I keep getting these errors:

Binding: 'Publisher' property not found on 'Nintendo', target property: 'Xamarin.Forms.Label.Text'
Binding: 'Publisher' property not found on 'Nintendo', target property: 'Xamarin.Forms.Label.Text'
Binding: 'Platform' property not found on 'Wii U', target property: 'Xamarin.Forms.Label.Text'
Binding: 'Platform' property not found on 'Wii U', target property: 'Xamarin.Forms.Label.Text'

I've looked at multiple sites for help but I can't seem to figure out why it's not working properly. The results (Nintendo, Wii U) are correct and are showing in these errors but nothing is being binded to my labels. So my question is... What exactly am I doing wrong?

Here's my xaml:

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
                       xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
                       x:Class="Finale.DetailsPage"
                       xmlns:local="clr-namespace:Finale;assembly=Finale"
             Title="{Binding Name}"
             BackgroundColor="White">
<ScrollView VerticalOptions="FillAndExpand" HorizontalOptions="FillAndExpand">
    <StackLayout Padding="5, 25">
      <Label x:Name="lblTitle"
      Text="{Binding Name}"
                 Font="Bold,Large"
                 HorizontalOptions="Center"/>
      <Image x:Name="imgCover"
      Source="{Binding Image}"
                 WidthRequest="200"
                 HeightRequest="200"/>

      <StackLayout Padding="50, 10">

            <!-- Developer -->
            <StackLayout Orientation="Horizontal">
              <Label Text="Developer(s):"
                     HorizontalOptions="FillAndExpand" />
              <Label x:Name="lblDeveloper"
              Text="{Binding Developer}"
                     Font="Bold,Medium" />
            </StackLayout>

            <!-- Publisher -->
            <StackLayout Orientation="Horizontal">
              <Label Text="Publisher(s):"
                     HorizontalOptions="FillAndExpand" />
              <Label x:Name="lblPublisher"
              Text="{Binding Publisher}"
                     Font="Bold,Medium" />
            </StackLayout>

            <!-- Platform -->
            <StackLayout Orientation="Horizontal">
              <Label Text="Platform(s):"
                      HorizontalOptions="FillAndExpand" />
              <Label x:Name="lblPlatform"
              Text="{Binding Platform}"
                     Font="Bold,Medium" />
            </StackLayout>

            <!-- Release Date -->
            <StackLayout Orientation="Horizontal">
              <Label Text="Release Date:"
                     HorizontalOptions="FillAndExpand" />
              <Label x:Name="lblReleaseDate"
              Text="{Binding ReleaseDate}"
                     Font="Bold,Medium" />
            </StackLayout>

            <!-- Summary -->
            <StackLayout Orientation="Horizontal">
              <Label x:Name="lblSummary"
              Text="{Binding Summary}"
                     Font="Bold,Medium" />
            </StackLayout>
          </StackLayout>
        </StackLayout>
  </ScrollView>
</ContentPage>

And here's my .cs:

namespace Finale
{
  public partial class DetailsPage : ContentPage
  {
        public ObservableCollection<Details> Details { get; set; }

        DatabaseManager objDB;
        List<ToDo> DID;
        int prevGameID;

        public DetailsPage()
    {
      InitializeComponent();
            GetDetails ();
            this.BindingContext = new Details();
    }

        public async Task GetDetails()
        {
            objDB = new DatabaseManager ();
            DID = objDB.ViewNextG ();
            prevGameID = DID [0].gameid;
            try {
                Details = new ObservableCollection<Details>();

                var query = ParseObject.GetQuery("tblGameDetails")
                    .WhereEqualTo("gameid", prevGameID);
                IEnumerable<ParseObject> games = await query.FindAsync ();

                foreach (ParseObject game in games) {
                    int detailsid = game.Get<int>("id");
                    string gametitle = game.Get<String>("gametitle");
                    string developer = game.Get<String>("developer");
                    string publisher = game.Get<String>("publisher");
                    string platform = game.Get<String>("platform");
                    DateTime releasedate = game.Get<DateTime>("releasedate");
                    string image = game.Get<String>("image");
                    string summary = game.Get<String>("summary");

                    Details.Add(new Finale.Details
                        {
                            ID = detailsid,
                            Name = gametitle,
                            Developer = developer,
                            Publisher = publisher,
                            Platform = platform,
                            ReleaseDate = Convert.ToString(releasedate),
                            Image = image,
                            Summary = summary,
                        });

                    Console.WriteLine(detailsid + " " + gametitle);

                }
                lblTitle.BindingContext = Details[0].Name;
                imgCover.BindingContext = Details[0].Image;
                lblDeveloper.BindingContext = Details[0].Developer;
                lblPublisher.BindingContext = Details[0].Publisher;
                lblPlatform.BindingContext = Details[0].Platform;
                lblReleaseDate.BindingContext = Convert.ToString(Details[0].ReleaseDate);
                lblSummary.BindingContext = Details[0].Summary;
            } catch (ParseException e) {
                Console.WriteLine ("Error: ", e.Message);
            }
        }
  }
}

I am trying to add the correct version of System.Net.Http to my Xamarin project. I can't seem to get it through Nuget. I have tried adding it through the add references dialog, clicking Assemblies --> Framework and it says all framework DLLs are already referenced. If I scan my hard drive for System.Net.Http.dll hundreds of entries come up. What is the correct way to add this DLL reference to a Xamarin project? In the future, I believe the base Xamarin projects should have it already since this is about the only way I know of to map WebAPI calls etc.

Using Xamarin.Forms.Maps 2.3.3.193. The call to GetAddressesForPositionAsync always returns null for Android. It works fine for iOS and UWP. I've only tried on the Visual Studio emulator, but the other platforms work with the emulators/simulators. I have set a location in the emulator. Anything I'm missing?