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xamarinformsbackgrounding's Issues

Can we use this for Windows Phone as well?

This approach covers Android and iOS quite nicely.

Is there also a way to support Windows Phone?

That way a single codebase will support all three platforms. Backgrounding is currently confusing and painful.

Any progress on Android boot bug?

I'm also facing a service that is run when CompletedBoot broadcast is received, but the Task.Run simply doesn't work =\ (my logs go until OnStartCommand. No logs from the task itself)

Background issue in LongRunningTask

The longRunningTask is working well in foreground.
But thread is cancelled about 3 mins later once app works in background.
Can you please fix this issue ?

Can't build this project in the new version visual studio

visual studio version info:

Microsoft Visual Studio Community 2019
Version 16.6.2
VisualStudio.16.Release/16.6.2+30204.135
Microsoft .NET Framework
Version 4.8.03752

Installed Version: Community

Visual C++ 2019   00435-60000-00000-AA008
Microsoft Visual C++ 2019

Azure App Service Tools v3.0.0   16.6.948.25768
Azure App Service Tools v3.0.0

C# Tools   3.6.0-4.20251.5+910223b64f108fcf039012e0849befb46ace6e66
C# components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used.

Common Azure Tools   1.10
Provides common services for use by Azure Mobile Services and Microsoft Azure Tools.

Extensibility Message Bus   1.2.0 (d16-2@8b56e20)
Provides common messaging-based MEF services for loosely coupled Visual Studio extension components communication and integration.

IntelliCode Extension   1.0
IntelliCode Visual Studio Extension Detailed Info

Microsoft JVM Debugger   1.0
Provides support for connecting the Visual Studio debugger to JDWP compatible Java Virtual Machines

Microsoft MI-Based Debugger   1.0
Provides support for connecting Visual Studio to MI compatible debuggers

Microsoft Visual C++ Wizards   1.0
Microsoft Visual C++ Wizards

Microsoft Visual Studio VC Package   1.0
Microsoft Visual Studio VC Package

Mono Debugging for Visual Studio   16.6.17 (9692114)
Support for debugging Mono processes with Visual Studio.

NuGet Package Manager   5.6.0
NuGet Package Manager in Visual Studio. For more information about NuGet, visit https://docs.nuget.org/

ProjectServicesPackage Extension   1.0
ProjectServicesPackage Visual Studio Extension Detailed Info

Visual Basic Tools   3.6.0-4.20251.5+910223b64f108fcf039012e0849befb46ace6e66
Visual Basic components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used.

Visual F# Tools 10.9.1.0 for F# 4.7   16.6.0-beta.20217.4+1c969cac25e2d38d71872efe6c8226029e42bb59
Microsoft Visual F# Tools 10.9.1.0 for F# 4.7

Visual Studio Code Debug Adapter Host Package   1.0
Interop layer for hosting Visual Studio Code debug adapters in Visual Studio

VisualStudio.DeviceLog   1.0
Information about my package

VisualStudio.Foo   1.0
Information about my package

VisualStudio.Mac   1.0
Mac Extension for Visual Studio

Xamarin   16.6.000.1061 (d16-6@8e68aa8)
Visual Studio extension to enable development for Xamarin.iOS and Xamarin.Android.

Xamarin Designer   16.6.0.318 (remotes/origin/d16-6@66afc5421)
Visual Studio extension to enable Xamarin Designer tools in Visual Studio.

Xamarin Templates   16.6.40 (1f1466f)
Templates for building iOS, Android, and Windows apps with Xamarin and Xamarin.Forms.

Xamarin.Android SDK   10.3.1.4 (d16-6/3a10de9)
Xamarin.Android Reference Assemblies and MSBuild support.
    Mono: 165f4b0
    Java.Interop: xamarin/java.interop/d16-6@2cab35c
    ProGuard: xamarin/proguard/master@905836d
    SQLite: xamarin/sqlite/3.31.1@49232bc
    Xamarin.Android Tools: xamarin/xamarin-android-tools/d16-6@bfb66f3


Xamarin.iOS and Xamarin.Mac SDK   13.18.2.1 (29c4ea7)
Xamarin.iOS and Xamarin.Mac Reference Assemblies and MSBuild support.

compiling errors:

Severity	Code	Description	Project	File	Line	Suppression State
Error	CS0103	The name 'InitializeComponent' does not exist in the current context	FormsBackgrounding	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Core\BackgroundPage.xaml.cs	11	Active
Error	CS0111	Type 'LongRunningPage' already defines a member called 'InitializeComponent' with the same parameter types	FormsBackgrounding	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Core\obj\Debug\FormsBackgrounding.LongRunningPage.xaml.g.cs	29	Active
Error	CS1061	'BackgroundPage' does not contain a definition for 'SleepDateLabel' and no accessible extension method 'SleepDateLabel' accepting a first argument of type 'BackgroundPage' could be found (are you missing a using directive or an assembly reference?)	FormsBackgrounding	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Core\BackgroundPage.xaml.cs	17	Active
Error	CS1061	'BackgroundPage' does not contain a definition for 'FirstNameEntry' and no accessible extension method 'FirstNameEntry' accepting a first argument of type 'BackgroundPage' could be found (are you missing a using directive or an assembly reference?)	FormsBackgrounding	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Core\BackgroundPage.xaml.cs	24	Active
Error	CS1061	'BackgroundPage' does not contain a definition for 'FirstNameEntry' and no accessible extension method 'FirstNameEntry' accepting a first argument of type 'BackgroundPage' could be found (are you missing a using directive or an assembly reference?)	FormsBackgrounding	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Core\BackgroundPage.xaml.cs	27	Active
Error	CS0103	The name 'InitializeComponent' does not exist in the current context	FormsBackgrounding	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Core\DownloadPage.xaml.cs	11	Active
Error	CS0103	The name 'downloadButton' does not exist in the current context	FormsBackgrounding	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Core\DownloadPage.xaml.cs	13	Active
Error	CS1061	'DownloadPage' does not contain a definition for 'downloadStatus' and no accessible extension method 'downloadStatus' accepting a first argument of type 'DownloadPage' could be found (are you missing a using directive or an assembly reference?)	FormsBackgrounding	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Core\DownloadPage.xaml.cs	17	Active
Error	CS0103	The name 'catImage' does not exist in the current context	FormsBackgrounding	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Core\DownloadPage.xaml.cs	24	Active
Error	CS1061	'DownloadPage' does not contain a definition for 'catImage' and no accessible extension method 'catImage' accepting a first argument of type 'DownloadPage' could be found (are you missing a using directive or an assembly reference?)	FormsBackgrounding	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Core\DownloadPage.xaml.cs	32	Active
Error	CS0103	The name 'longRunningTask' does not exist in the current context	FormsBackgrounding	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Core\LongRunningPage.xaml.cs	14	Active
Error	CS0103	The name 'stopLongRunningTask' does not exist in the current context	FormsBackgrounding	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Core\LongRunningPage.xaml.cs	19	Active
Error	CS0103	The name 'ticker' does not exist in the current context	FormsBackgrounding	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Core\LongRunningPage.xaml.cs	36	Active
Error	CS0103	The name 'ticker' does not exist in the current context	FormsBackgrounding	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Core\LongRunningPage.xaml.cs	42	Active
Error	XLS0414	The type 'ContentPage' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built.	FormsBackgrounding	BackgroundPage.xaml	3	
Error	XLS0414	The type 'ContentPage' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built.	FormsBackgrounding	BackgroundPage.xaml	8	
Error	XLS0414	The type 'OnPlatform' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built.	FormsBackgrounding	BackgroundPage.xaml	9	
Error	XLS0414	The type 'Thickness' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built.	FormsBackgrounding	BackgroundPage.xaml	9	
Error	XLS0414	The type 'StackLayout' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built.	FormsBackgrounding	BackgroundPage.xaml	12	
Error	XLS0414	The type 'StackLayout' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built.	FormsBackgrounding	BackgroundPage.xaml	13	
Error	XLS0414	The type 'Label' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built.	FormsBackgrounding	BackgroundPage.xaml	14	
Error	XLS0414	The type 'Label' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built.	FormsBackgrounding	BackgroundPage.xaml	15	
Error	XLS0414	The type 'StackLayout' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built.	FormsBackgrounding	BackgroundPage.xaml	17	
Error	XLS0414	The type 'Label' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built.	FormsBackgrounding	BackgroundPage.xaml	18	
Error	XLS0414	The type 'Entry' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built.	FormsBackgrounding	BackgroundPage.xaml	19	
Error	XLS0414	The type 'Label' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built.	FormsBackgrounding	BackgroundPage.xaml	22	
Error	XLS0414	The type 'ContentPage' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built.	FormsBackgrounding	LongRunningPage.xaml	3	
Error	XLS0414	The type 'ContentPage' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built.	FormsBackgrounding	LongRunningPage.xaml	9	
Error	XLS0414	The type 'OnPlatform' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built.	FormsBackgrounding	LongRunningPage.xaml	10	
Error	XLS0414	The type 'Thickness' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built.	FormsBackgrounding	LongRunningPage.xaml	10	
Error	XLS0414	The type 'ContentPage' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built.	FormsBackgrounding	LongRunningPage.xaml	13	
Error	XLS0414	The type 'StackLayout' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built.	FormsBackgrounding	LongRunningPage.xaml	14	
Error	XLS0414	The type 'Button' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built.	FormsBackgrounding	LongRunningPage.xaml	15	
Error	XLS0414	The type 'Button' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built.	FormsBackgrounding	LongRunningPage.xaml	16	
Error	XLS0414	The type 'Label' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built.	FormsBackgrounding	LongRunningPage.xaml	17	
Error	CS0246	The type or namespace name 'System' could not be found (are you missing a using directive or an assembly reference?)	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	1	Active
Error	CS0246	The type or namespace name 'System' could not be found (are you missing a using directive or an assembly reference?)	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	2	Active
Error	CS0246	The type or namespace name 'System' could not be found (are you missing a using directive or an assembly reference?)	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	3	Active
Error	CS0246	The type or namespace name 'Android' could not be found (are you missing a using directive or an assembly reference?)	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	4	Active
Error	CS0246	The type or namespace name 'Android' could not be found (are you missing a using directive or an assembly reference?)	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	5	Active
Error	CS0518	Predefined type 'System.Object' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	9	Active
Error	CS0518	Predefined type 'System.String' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	11	Active
Error	CS0518	Predefined type 'System.Boolean' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	19	Active
Error	CS0518	Predefined type 'System.Object' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	24	Active
Error	CS0246	The type or namespace name 'Task<>' could not be found (are you missing a using directive or an assembly reference?)	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	24	Active
Error	CS0518	Predefined type 'System.String' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	24	Active
Error	CS0518	Predefined type 'System.String' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	24	Active
Error	CS0518	Predefined type 'System.String' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	33	Active
Error	CS0518	Predefined type 'System.String' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	33	Active
Error		Assembly 'Xamarin.Android.Support.v4' is using '[assembly: Java.Interop.JavaLibraryReferenceAttribute]', which is no longer supported. Use a newer version of this NuGet package or notify the library author.	FormsBackgrounding.Droid			
Error		Assembly 'Xamarin.Android.Support.v4' is using '[assembly: Java.Interop.JavaLibraryReferenceAttribute]', which is no longer supported. Use a newer version of this NuGet package or notify the library author.	FormsBackgrounding.Droid			
Error		Assembly 'Xamarin.Android.Support.v4' is using '[assembly: Android.IncludeAndroidResourcesFromAttribute]', which is no longer supported. Use a newer version of this NuGet package or notify the library author.	FormsBackgrounding.Droid			
Error	CS1729	'object' does not contain a constructor that takes 0 arguments	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	9	Active
Error	CS0518	Predefined type 'System.String' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	14	Active
Error	CS0518	Predefined type 'System.Object' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	14	Active
Error	CS0103	The name 'Environment' does not exist in the current context	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	14	Active
Error	CS0518	Predefined type 'System.Object' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	14	Active
Error	CS0103	The name 'Environment' does not exist in the current context	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	14	Active
Error	CS0518	Predefined type 'System.Object' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	15	Active
Error	CS0103	The name 'System' does not exist in the current context	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	15	Active
Error	CS0518	Predefined type 'System.String' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	15	Active
Error	CS0518	Predefined type 'System.Object' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	21	Active
Error	CS0103	The name 'File' does not exist in the current context	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	21	Active
Error	CS0518	Predefined type 'System.Object' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	26	Active
Error	CS0518	Predefined type 'System.Boolean' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	26	Active
Error	CS0518	Predefined type 'System.Object' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	27	Active
Error	CS0103	The name 'Task' does not exist in the current context	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	27	Active
Error	CS0518	Predefined type 'System.Object' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	29	Active
Error	CS0103	The name 'Task' does not exist in the current context	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	29	Active
Error	CS0518	Predefined type 'System.IDisposable' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	36	Active
Error	CS0518	Predefined type 'System.Object' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	36	Active
Error	CS0246	The type or namespace name 'MemoryStream' could not be found (are you missing a using directive or an assembly reference?)	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	36	Active
Error	CS0518	Predefined type 'System.IDisposable' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	37	Active
Error	CS0518	Predefined type 'System.Object' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	37	Active
Error	CS0246	The type or namespace name 'Java' could not be found (are you missing a using directive or an assembly reference?)	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	37	Active
Error	CS0518	Predefined type 'System.Object' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	38	Active
Error	CS0246	The type or namespace name 'BitmapFactory' could not be found (are you missing a using directive or an assembly reference?)	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	38	Active
Error	CS0518	Predefined type 'System.Int32' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	39	Active
Error	CS0518	Predefined type 'System.Boolean' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	40	Active
Error	CS0518	Predefined type 'System.Object' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	43	Active
Error	CS0103	The name 'BitmapFactory' does not exist in the current context	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	43	Active
Error	CS0518	Predefined type 'System.Object' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	44	Active
Error	CS0103	The name 'Bitmap' does not exist in the current context	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	44	Active
Error	CS0518	Predefined type 'System.Int32' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	44	Active
Error	CS0518	Predefined type 'System.Object' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	48	Active
Error	CS0103	The name 'File' does not exist in the current context	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	48	Active
Error	CS0518	Predefined type 'System.Object' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	50	Active
Error	CS0246	The type or namespace name 'Exception' could not be found (are you missing a using directive or an assembly reference?)	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	50	Active
Error	CS0518	Predefined type 'System.Object' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	51	Active
Error	CS0103	The name 'Log' does not exist in the current context	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	51	Active
Error	CS0518	Predefined type 'System.Object' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	51	Active
Error	CS0103	The name 'LogPriority' does not exist in the current context	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	51	Active
Error	CS0518	Predefined type 'System.String' is not defined or imported	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\ImageHelper.cs	51	Active
Warning		The referenced component 'FormsViewGroup' could not be found.	FormsBackgrounding.Droid			
Warning		The referenced component 'Xamarin.Forms.Platform.Android' could not be found.	FormsBackgrounding.Droid			
Warning		The referenced component 'Mono.Android' could not be found.	FormsBackgrounding.Droid			
Warning		The referenced component 'System.Threading.Tasks' could not be found.	FormsBackgrounding.Droid			
Warning		The referenced component 'Xamarin.Forms.Platform' could not be found.	FormsBackgrounding.Droid			
Warning		The referenced component 'Xamarin.Forms.Core' could not be found.	FormsBackgrounding.Droid			
Warning		The referenced component 'System.Core' could not be found.	FormsBackgrounding.Droid			
Warning		The referenced component 'System.Runtime' could not be found.	FormsBackgrounding.Droid			
Warning		Unable to add a reference to project 'FormsBackgrounding'. The current project's target is not one of or compatible with the targets of Portable Library project 'FormsBackgrounding'.

A Portable Library project's targets can be changed via the Library tab in the project's properties.	FormsBackgrounding.Droid			
Warning		The referenced component 'Xamarin.Forms.Xaml' could not be found.	FormsBackgrounding.Droid			
Warning		The referenced component 'System' could not be found.	FormsBackgrounding.Droid			
Warning		The referenced component 'System.Xml' could not be found.	FormsBackgrounding.Droid			
Warning		The referenced component 'Xamarin.Android.Support.v4' could not be found.	FormsBackgrounding.Droid			
Warning		AndroidManifest.xml //uses-sdk/@android:minSdkVersion '15' is less than API-16, this configuration is not supported.	FormsBackgrounding.Droid	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Droid\Properties\AndroidManifest.xml		
Error	CS0006	Metadata file 'C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\Core\bin\Debug\FormsBackgrounding.dll' could not be found	FormsBackgrounding.iOS	C:\Users\Weibo\Downloads\xamarin_code\XamarinFormsBackgrounding-master\XamarinFormsBackgrounding-master\iOS\CSC	1	Active
Warning		Found conflicts between different versions of the same dependent assembly. Please set the "AutoGenerateBindingRedirects" property to true in the project file. For more information, see http://go.microsoft.com/fwlink/?LinkId=294190.	FormsBackgrounding.iOS			
Warning		Unable to add a reference to project 'FormsBackgrounding'. The current project's target is not one of or compatible with the targets of Portable Library project 'FormsBackgrounding'.

A Portable Library project's targets can be changed via the Library tab in the project's properties.	FormsBackgrounding.iOS			
Warning		Not enough information has been provided to MSBuild in order to establish a connection to a Remote Server. The project 'FormsBackgrounding.iOS' will continue building offline	FormsBackgrounding.iOS

any suggestion?

Long running task was cancelled by iOS after lock the screen

On my iPhone 6+ with iOS 12, the sample works well with debug model. But when start the app on my iPhone, start LongRunning task and lock iPhone or press iPhone's home button, the background task will be cancelled automatically after 3 minutes even though check Background model, Background fetch, Background processing on Info.plist page. Could you update your sample code to fix this issue?

The resource could not be loaded because the App Transport Security policy requires the use of a secure connection

Great example! Really enjoyed it.

The current code doesn't work on iOS9. It will probably give you the following error: The resource could not be loaded because the App Transport Security policy requires the use of a secure connection.

This can be solved by placing the following code in your Info.plist.
NSAppTransportSecurity

NSAllowsArbitraryLoads

More information can be found here: http://stackoverflow.com/questions/30731785/how-do-i-load-an-http-url-with-app-transport-security-enabled-in-ios-9

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