xamarinhq/app-conference

Pre-build conference application built with Xamarin

Conference Mobile App

The Conference app is full of awesome and includes everything that you would expect from a spectacular conference application, but features tons of deep integration with:

• Azure + Online/Offline Sync
• Barcode Scanning
• Calendar Integration
• Maps & Navigation
• Push Notifications
• Phone Dialer
• Wi-Fi configuration
• URL Navigation (Universal Links + Google App Indexing)
• A bunch of other great things

Shared code details

This app is around 15,000 lines of code. The iOS version contains 93% shared code, the Android version contains 90% shared code, the UWP has 99% shared code, and our Azure backend contains 23% shared code with the clients!:

VSTS & App Center Integration

With each push of code the Conference app was built with Visual Studio Team Services and App Center Build and deployed to be tested on a plethora of apps in App Center Test.

Build Status

• iOS:
• Android:

Getting Started

Mobile App

Open up src/Conference.sln, which contains the iOS, Android, and Windows project. Simply restore your NuGet packages and build the application. It will run out of the box and will work off of a sample backend that we have published.

Data Source

Out of the box the Conference Mobile app uses sample data provided by the Conference.DataStore.Mock. This is great for development, but you can also test against the test/development read-only Azure App Server Mobile Apps backend. Simply head to Conference.Client.Portable/ViewModel/ViewModelBase.cs.

Simply change:

public static void Init (bool mock = true)

to

public static void Init (bool mock = false)

Additional setup

Push Notifications

All of the code for Azure Notification Hubs has been integrated into the Conference application, you will just need to setup your Azure Notifcation Hub Keys and Google Keys. Please read through the startup guide and then fill in your keys in: Conference.Utils/Helpers/Constants.cs

Google Maps API key (Android)

There is a “Debug” key that you can use out of the box, or you can configure your own. For Android, you'll need to obtain a Google Maps API key: https://developer.xamarin.com/guides/android/platform_features/maps_and_location/maps/obtaining_a_google_maps_api_key/

Insert it in the Android project: ~/Properties/AndroidManifest.xml:

<application ...>
  ...
  <meta-data android:name="com.google.android.geo.API_KEY" android:value="GOOGLE_MAPS_API_KEY" />
  ...
</application>

Bing Maps API Key (UWP)

In App.xaml.cs in the Conference.UWP update Xamarin.FormsMaps.Init(string.Empty); with your API key from https://www.bingmapsportal.com/

Build your own Backend

This repo contains a full backend that you can deploy to your own Azure App Service Mobile App Backend.

About

The Conference mobile apps were handcrafted by Xamarins spread out all over the world.

Development:

• James Montemagno
• Pierce Boggan

Design:

• Antonio García Aprea

Testing:

• Ethan Dennis

Many thanks to:

• Fabio Cavalcante
• Matisse Hack
• Sweetkriti Satpathy
• Andrew Branch

app-conference's Issues

feature request: click on session location to show on map

(for future reference)

Database MDF file

Hello,

I am looking at exploring the app but I am stuck at a place now:

app-conference/src/Conference.Backend/Web.config

There is mention of aspnet-Conference.Backend-20151029080950.mdf file which I am unable to find. I reached this file while looking to setup my own backend locally.

I would appreciate if someone can assist on this further, please.

Xamarin.Essentials.Maps

I see in the app-conference source that there is a reference in the VenueViewModel.cs a comment:

//TODO: Does Xamarin.Essentials support this?

Is this supported yet? I am trying to convert from a sandbox app using Xamarin.Forms.Maps to Xamarin.Essentials. If you happen to have a simple sample of how this works from ViewModel to XAML page that would be great. Alternatively if Essentials does not support if you could let me know an estimated if and when. Thanks much!

J

Hockey App url spelling mistake

I was checking out this article and noticed that the link to http://hockeyapp.net is missing the "e" in hockey.

disable animation on detail page change

hi,
just a question. i cant find out how i can disable the animation on detail page change event!?
on the Evolce app in google play store there is no animation. however, if i clone your app i see always an animation on detail page changed (android)

thanks

Running backend on localhost

Can someone please give me some guidance on how to run this app's backend on localhost.

I have change the following => mock data = false and I changed the xamarin azure cloud string to http://localhost:51800 and inserted
ValidAudiences = new[] { "http://localhost" },
ValidIssuers = new[] { "http://localhost" },
TokenHandler = config.GetAppServiceTokenHandler()

The app compile fine and runs against the mock data and the xamarin cloud, but when i change the connection string to run against http://localhost:51800/ I get the following error :

System.Net.WebException: Error: ConnectFailure (Connection refused) ---> System.Net.Sockets.SocketException:
Connection refused
at System.Net.Sockets.Socket.Connect (System.Net.EndPoint remoteEP) [0x000cb] in /Users/builder/data/lanes/2923/52635947/source/mono/mcs/class/System/System.Net.Sockets/Socket.cs:1313
at System.Net.WebConnection.Connect (System.Net.HttpWebRequest request) [0x0019b] in /Users/builder/data/lanes/2923/52635947/source/mono/mcs/class/System/System.Net/WebConnection.cs:195
--- End of inner exception stack trace ---
at System.Net.HttpWebRequest.EndGetResponse (IAsyncResult asyncResult) [0x0005e] in /Users/builder/data/lanes/2923/52635947/source/mono/mcs/class/System/System.Net/HttpWebRequest.cs:1005
at System.Threading.Tasks.TaskFactory1[TResult].FromAsyncCoreLogic (IAsyncResult iar, System.Func2 endFunction, System.Action1 endAction, System.Threading.Tasks.Task1 promise, Boolean requiresSynchronization) [0x00014] in /Users/builder/data/lanes/2923/52635947/source/mono/external/referencesource/mscorlib/system/threading/Tasks/FutureFactory.cs:550
--- End of stack trace from previou

No proper documentation

Lot of the areas of the code are not properly documented which, considering it's an open source project, makes it hard to learn from without reading every single line of code. Plus a few empty classes around the project.

Problem with iOS build

I am evaluating Xamarin but can't get the iOS version to build. All other examples including MyDriving build fine. Thanks

6>C:\Users\Paul\Source\Repos\app-evolve\src\XamarinEvolve.iOS\AppDelegate.cs(14,7,14,19): error CS0246: The type or namespace name 'WindowsAzure' could not be found (are you missing a using directive or an assembly reference?)

6>C:\Users\Paul\Source\Repos\app-evolve\src\XamarinEvolve.iOS\Helpers\Toaster.cs(4,7,4,15): error CS0246: The type or namespace name 'ToastIOS' could not be found (are you missing a using directive or an assembly reference?)

How to connect tweets, login and azure data

Hi

I am new in Xamarin, but I like to build conference mobile app, and I found this app-evolve which I like it very much.

How can I connect tweets, login and azure data to the application?

Thanks

Upgrade to Xamarin Forms 4 and Shell?

Any chance this would be updated to support Xamarin Forms 4, Shell, and newer items like Xamarin Essentials?

XamarinEvolve.Clients.UI.Controls.CardView

There seems to be a typo in the CardView class that extends Frame.

`public CardView()

    {

        Padding = 0;

        if (Device.OS == TargetPlatform.iOS || Device.OS == TargetPlatform.iOS)

        {

            HasShadow = false;

            OutlineColor = Color.Transparent;

            BackgroundColor = Color.Transparent;

        }

    }`

Second check should be Android (?) instead of iOS.

Backend deployment

Can someone provide some details on backend deployment? Thanks

Chaging Detail causes flickering

When chaging the Detail Page of the Master-Detail Page on line https://github.com/xamarinhq/app-evolve/blob/master/src/XamarinEvolve.Clients.UI/Pages/Android/RootPage.cs#L89 this causes flickering inside my app, eventho I cannot spot a similar behaviour in the version I downloaded from the playstore. Can anyone explain this to me and maybe even provide a fix?

Accessibility

Dear colleagues,
I am trying to enrich this project with accessibility elements. I can not deal with the problem of describing the HamburgerMenu button. Please help. How can I set the ContentDescription for this item? Thanks for help!

As usual, none of the Xamarin samples compiled!!!

I've downloaded quite a few sample apps and NONE of them are compiled. Updated NuGet didn't help either.

Auth Service

Hi folks!

We have been looking around for a service but we can't find any docs in Xamarin evolve codebase related to Auth service you use for SSO. Can you point out how we can get started with that?

Shareef

Build backend issue with VS for Mac

Hi,

Trying to build the backend project in VS for mac 7.0 (build 3148) and the following error appears:

/Users/daniel/Documents/Xamarin/app-evolve/src/XamarinEvolve.Backend/XamarinEvolve.Backend.csproj(3,3): Error MSB4019: The imported project "/Library/Frameworks/Mono.framework/Versions/5.0.0/lib/mono/xbuild/Microsoft/VisualStudio/v15.0/WebApplications/Microsoft.WebApplication.targets" was not found. Confirm that the path in the declaration is correct, and that the file exists on disk. (MSB4019) (XamarinEvolve.Backend)

---

The solution is here: http://stackoverflow.com/a/43985605

Thanks.

Getting this error.

Xamarin.GooglePlayServices.Base version in metadata is old and when we update also does not work, downgrade to one in metadata won't work.

We constantly get this following error.

Did not find reference matching RestoreAssemblyResources Assembly Name metadata 'Xamarin.GooglePlayServices.Basement'

Any idea how to fix?

RSS feed shows '&' as &

The encoding of the twitter messages needs some encoding love. The RSS feed shows an '&' in a Twitter message as & a m p ; (without the spaces)

Help with making this app my own, for an upcoming conference

Hi guys

I am fairly new with Xamarin and even greener with Azure.

I understand "some" basics around Azure and Xamarin integration: like what it takes to configure Azure-Xamarin link + Azure+Xamarin push notifications (but limited to sending test notifications from Azure portal) + Authentication (via social media services)+ Easy Tables integration (with basic CRUD operations). This is all with a Node.js Azure back-end. I have no experience with .Net back-end. In this example; James states; he provide's a back-end for use, my question is how exactly do I take this back-end solution and make it my own within a Node.js configuration?

James's comment regarding just adding MY OWN push notification keys + MY OWN Authentication (not sure does it also address Authorization) keys. I understand this, but is it really that simple to get theee aspects up-and-running?

Versions deployed to windows store or Android store

Just wondering if you know where this app is in the stores.

Also does xamarin forms work on macOS ?

Backend database structure

Hi

Is it possible to share the database structure of the project? It will be really helpful if you share Azure settings required for the project?

Regards
SMC

Fails to build on Android

This fails on Xamarin Test Cloud with 66/66 devices failed.
I downloaded it, loaded it with VS and I got 160+ errors when I tried to run this app on my phone.

Title Good

Incorrect filename in Android apk path

When first cloning the repo, some troubleshooting has to be done on the user's part to run the Android tests. This is because the apk path in the AppInitializer class has the incorrect filename (com.sample.evolve-Signed.apk), which needs to be updated to com.xamarin.xamarinevolve-Signed.apk.

[Feature Request] Add ASP.NET Admin Website

Currently, data must be manually uploaded or modified in the database. It would be nice to have an ASP.NET admin website that could be deployed for conference admins to add and upload data.

Build issues mostly in GcmService.cs

After cleaning & rebuilding each project, still getting issues (build errors) with GcmService.cs I am using vs.net 2017 rc (latest)

It looks like reference Microsoft.WindowsAzure.Messaging.Android is missing as well

Severity Code Description Project File Line Suppression State
Error CS0115 'GcmService.OnMessage(Context, Intent)': no suitable method found to override XamarinEvolve.Android C:\Xamarin\evolve\app-evolve-master\src\XamarinEvolve.Android\Notifications\GcmService.cs 98 Active
...
Severity Code Description Project File Line Suppression State
Error CS0246 The type or namespace name 'WindowsAzure' could not be found (are you missing a using directive or an assembly reference?) XamarinEvolve.Android C:\Xamarin\evolve\app-evolve-master\src\XamarinEvolve.Android\Notifications\GcmService.cs 7 Active
...
Severity Code Description Project File Line Suppression State
Error CS0115 'GcmService.OnError(Context, string)': no suitable method found to override XamarinEvolve.Android C:\Xamarin\evolve\app-evolve-master\src\XamarinEvolve.Android\Notifications\GcmService.cs 175 Active

The "LinkAssemblies" task failed unexpectedly

Hi James, I am trying to compile the Evolve solution in release mode but getting below error. I am using
using Visual Studio 2015 and my min Android version is API level 19 and Target version is API level 23.

Application is working fine in debug mode.

error MSB4018: The "LinkAssemblies" task failed unexpectedly.
error MSB4018: Mono.Linker.MarkException: Error processing method: 'System.Void Android.Support.V7.View.WindowCallbackWrapper::n_OnProvideKeyboardShortcuts_Ljava_util_List_Landroid_view_Menu_I(System.IntPtr,System.IntPtr,System.IntPtr,System.IntPtr,System.Int32)' in assembly: 'Xamarin.Android.Support.v7.AppCompat.dll' ---> Mono.Cecil.ResolutionException: Failed to resolve Android.Views.KeyboardShortcutGroup
error MSB4018: at Mono.Linker.Steps.MarkStep.HandleUnresolvedType(TypeReference reference)
error MSB4018: at Mono.Linker.Steps.MarkStep.MarkType(TypeReference reference)
error MSB4018: at MonoDroid.Tuner.MonoDroidMarkStep.MarkType(TypeReference reference)
error MSB4018: at Mono.Linker.Steps.MarkStep.MarkGenericArguments(IGenericInstance instance)
error MSB4018: at Mono.Linker.Steps.MarkStep.GetOriginalType(TypeReference type)
error MSB4018: at Mono.Linker.Steps.MarkStep.MarkType(TypeReference reference)
error MSB4018: at MonoDroid.Tuner.MonoDroidMarkStep.MarkType(TypeReference reference)
error MSB4018: at Mono.Linker.Steps.MarkStep.MarkMethodBody(MethodBody body)
error MSB4018: at Mono.Linker.Steps.MarkStep.ProcessMethod(MethodDefinition method)
error MSB4018: at Mono.Linker.Steps.MarkStep.ProcessQueue()
error MSB4018: --- End of inner exception stack trace ---
error MSB4018: at Mono.Linker.Steps.MarkStep.ProcessQueue()
error MSB4018: at Mono.Linker.Steps.MarkStep.Process()
error MSB4018: at Mono.Linker.Steps.MarkStep.Process(LinkContext context)
error MSB4018: at Mono.Linker.Pipeline.Process(LinkContext context)
error MSB4018: at MonoDroid.Tuner.Linker.Process(LinkerOptions options, LinkContext& context)
error MSB4018: at Xamarin.Android.Tasks.LinkAssemblies.Execute(DirectoryAssemblyResolver res)
error MSB4018: at Xamarin.Android.Tasks.LinkAssemblies.Execute()
error MSB4018: at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
error MSB4018: at Microsoft.Build.BackEnd.TaskBuilder.d__26.MoveNext()

Please help me to check the issue..

How to hide ListView Separator on the last item like you did in NonScrollableListView?

I'm sorry to use this topic for a question like StackOverflow, but I'm trying to create a page like the Info page of iOS conference page, but I have an "error" that I don't know how to resolve and don't Know the best place to ask for a help.

So, my problem is very simple. I use the NonScrollableListView in my app, but in the app conference, at the last item of the ListView, the Separator is hidden and showed only footer divider. I tried use same behaviour at my app, but both Separator and FooterDivider is visible. How can I fix that?

Here is my app result:

The conference app:

What is the best way use TabbedPage instead of MasterDetailPage?

I keep getting error trying to use tabbed version for Android instead of master detail page.

Can I use RootPageIOS for Android or do I need to do something different?

Thanks James for all you do!

Build error in the latest version of Xamarin Studio/Visual Studio for Mac

Formerly, I am able to build this solution in both Xamarin Studio (Alpha channel) and Visual Studio for Mac. However, in the latest version of XS and VS for Mac Preview 4, both pop an error related to missing icon resource:

/Users/hungys/Workspace/Xamarin Studio/app-evolve/src/XamarinEvolve.iOS/Resources/Images.xcassets/AppIcons.appiconset/Icon-58.png: Error: File not found: /Users/hungys/Workspace/Xamarin Studio/app-evolve/src/XamarinEvolve.iOS/Resources/Images.xcassets/AppIcons.appiconset/Icon-58.png (XamarinEvolve.iOS)

Did anyone encounter this build error?

Grid with RowSpacing and navigation

This is great app(example). I like solution with appbar in SessionPage. I want to use this solution for my application. But I have issue with navigation, this my user case:

1. Open session page.
2. Click item.
3. Click "back" on app toolbar
4. I see "white line" on short time
   

How can this be solved? Any ideas?

Android Startup times

Great and nice app,
but in different devices it taske about 8 seconds to start (cold boot)
This thing makes it definitely criticized in a stores where apps need to be reactive and smart.

There any to way to speed up or make splashscreen more interactive (for example with simple animations)

Thanks

Search Control does not render for devices running Android 7.0

When running the evolve app on my device running Android 7.0, the submissions page only shows the filter icon and the option to search the list of events is not displayed.

When I try the same code on a 6.0 device, it works fine. Updating the support libraries and other components with the current code base creates a lot of code breakages so in the apps current iteration, that is not an option unless everything gets updated.

What is the recommended way of editing the UI

I was wondering how one could visually add controls, it seems that there is no storyboard file in the repo.

Android project does not build out-of-the-box

I downloaded the project (master branch) and did a rebuild (unloaded the UWP and iOS projects). My setup: VS Studio 2015 Community with Xamarin, all updated to the latest version.

I got 11 Errors, related to Gcm, eg. The type or namespace name 'GcmServiceBase' could not be found (are you missing a using directive or an assembly reference?)

When I look at the references for the Android project, I see an exclamation mark next to Microsoft.WindowsAzure.Messaging.Android and UrlImageViewHelper, so these dlls are missing. Any tips on how to fix this?

Thanks for sharing your code with the community, it's great to have insight in a real case!

Build errors when updating nuget packages.

A customer reported that after updating the nuget packages, the build was failing.

I traced the errors down to three changes in Xamarin.Essentials:

1. DataTransfer type was renamed to Share
2. Clipboard.SetText(...) was renamed to Clipboard.SetTextAsync(...)
3. Connectivity.ConnectivityChanged event handler signature was changed from:
   protected async void ConnectivityChanged (ConnectivityChangedEventArgs e)
   to
   protected async void ConnectivityChanged (object sender, ConnectivityChangedEventArgs e)

The name <name> does not exists in the current context.

Hi, first of all I would like to express my gratitude, and appreciation at the people who made all the xamarin examples and samples.

I downloaded the source code, and read the "Getting Started" that it should be fine building it right out of the box after restoring the NuGet packages. However, I'm getting a few errors such as:

CS0103 The name 'InitializeComponent' does not exists in the current context.
CS0103 The name 'LabelName' does not exists in the current context.

The above errors are all occurring in the XamarinEvolve.Clients.UI - CategoryViewCell.xaml.cs file.

In both Android and iOS projects. I'm very new to Xamarin and C#.Net. I am trying XamarinEvolve because I would like to study the codes and see how it all works in a MasterDetail view.

17-Nov-2016:
Update on the issue. After cleaning and rebuilding. Now there's another error which states:

CS0103 The name 'Koush' does not exists in the current context - Xamarin.Android NavigationViewRenderer.cs

iOS fails to build - GoogleAppIndexing

Hello,
I can't build the iOS version, whereas the Android version works fine.
I have restored all the NuGets packages, and all the Components seem to be correctly installed.
I get these following errors:

Native linking failed. Please review the build log.
(XamarinEvolve.iOS //C:\Program Files (x86)\MSBuild\Xamarin\iOS\Xamarin.iOS.Common.targets 681)

Native linking error: file not found: /Users/Xxx/Library/Caches/Xamarin/mtbs/builds/XamarinEvolveiOS/67a3fe1aa3172176a9205b8a492d7e3b/obj/iPhoneSimulator/Debug/mtouch-cache/GoogleAppIndexing
(XamarinEvolve.iOS //C:\Program Files (x86)\MSBuild\Xamarin\iOS\Xamarin.iOS.Common.targets 681)

On the Mac, a file "GoogleAppIndexingResources.bundle" is present in the given folder.

I don't find any detail in my logs...

Do you have any idea?

Authentication doesn't seem to work

The authentication used to work with Xamarin.com ids, but, now it does not recognize this id or a current Microsoft.com ID. Is the authentication path still functional?

Deploying backend using VS 2019 Community for Mac

I understand this project is old; given the developments around Visual Studio. .NET and Xamarin.Forms.

I would like to get this project up and running with backend on Azure; then start updating/modernize it given new developments. I am using VS for Mac (community edition); is it at all possible to use VS for Mac to deploy backend to Azure? If not; how would I go about deploying this backend onto Azure?

Regards, Jonathan

Why in all your apps you do not follow standards James?

Hi
I m a seasoned developer (c#/wpf) moving into mobile development and I have downloaded most of your apps .
Very helpful but i have noticed that standards are not followed

1. Lack of Unit tests
2. Dependency Injections is not done properly( no injection of interfaces in viewmodels or anywhere else)
   3.Large use of static classes which makes impossible to test.
   4.Static service container ,again difficult to test
   5.No suffix for Async methods.

Please could you clarify whether why you are not following standards?

many thanks

XamarinEvolve.Clients.Portable won't build

I'm using Visual Studio 2015 with all the latest Xamarin components (Tools, Options, Xamarin, Other) installed. I cannot build XamarinEvolve.Clients.Portable because its .csproj file is looking for ..\packages\FormsToolkit.1.1.14. However, the src\XamarinEvolve.Clients.Portable\packages.config file specifies FormsToolkit.1.1.18.

Am I doing something wrong or have others gotten this to build?

Rob

ListView Slow

The sessions screen keeps crashing, it seems that the ListView control of XamarinForms has performance problems. (Samsung Galaxy J3 and ASUS ZenFone 2)

Xamarin Evolve 2017

Hi guys,
We all are waiting for next version of evolve and like other companies such an app (Google I/O) we expected to see newer version of Evolve at 2017, because these kinds of apps are references for developers (as you know) but as evolve has no update till now, we are disappointing continue on Xamarin platform.

[Feature Request] Pull Translations into Resx files

Currently all strings are hard coded making it hard to update and extend to new platforms. Should be pulled into a different project (PCL) with resx files.

https://developer.xamarin.com/guides/xamarin-forms/advanced/localization/

Missing packages.config in UWP project (build fails)

Windows mobile app doesn't show sessions

Im using the WM10 app and it doesn't list any session and it says "No sessions found".

Version 1.1.9

iOS Fails to build.

Fails to build in Alpha channel. (No idea if it is related to that ATM)

VS 2015 Update 2 in Alpha channel fails at the end with:

C:\Program Files (x86)\MSBuild\Xamarin\iOS\Xamarin.iOS.Common.targets(680,3): error : Native linking error: clang: error: no such file or directory: '/Users/adamhill/Library/Caches/Xamarin/mtbs/builds/XamarinEvolveiOS/a0b5d69e48e6689bcfd6f496fc9d6613/obj/iPhone/Debug/mtouch-cache/GoogleAppIndexing'

C:\Program Files (x86)\MSBuild\Xamarin\iOS\Xamarin.iOS.Common.targets(680,3): warning : References to 'sqlite3' might require additional -framework=XXX or -lXXX instructions to the native linker

C:\Program Files (x86)\MSBuild\Xamarin\iOS\Xamarin.iOS.Common.targets(680,3): error : Native linking failed. Please review the build log.

Package Manager Console is clear. Other iOS apps build fine.

Can someone tell me where more detailed Build logs might be?