deployment failed without any error - xamarin

Question

I created this small application. I build the application and can see the icon on the emulator when I clicked the icon, the page opens without showing anything and then it closes again without showing any error. I cancelled the build and then it shows the below message in the output window:
C:\Program Files (x86)\Android\android-sdk\build-tools\23.0.0\zipalign.exe 4 "C:\VisualStudioMobileApplication\App3\App3\App3.Android\bin\Debug\com.companyname.app-Signed-Unaligned.apk" "bin\Debug\\com.companyname.app-Signed.apk"
1>Done building project "App3.Android.csproj" -- FAILED.
1>Build FAILED.
1>
1>Deploy failed on VisualStudio_android-23_arm_phone
1>Process was cancelled
Build has been canceled.
It does not give any error. I also put the break point on "OnCreate" method in MainActivity.cs file.The code does not break on that breakpoint even when I click on App3 icon.Below is my code for MainActivity.cs
using System;
using Android.App;
using Android.Content.PM;
using Android.Runtime;
using Android.Views;
using Android.Widget;
using Android.OS;
namespace App3.Droid
{
[Activity(Label = "App3", Icon = "#drawable/icon", Theme = "#style/MainTheme", MainLauncher = true, ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation)]
public class MainActivity : global::Xamarin.Forms.Platform.Android.FormsAppCompatActivity
{
protected override void OnCreate(Bundle bundle)
{
TabLayoutResource = Resource.Layout.Tabbar;
ToolbarResource = Resource.Layout.Toolbar;
base.OnCreate(bundle);
global::Xamarin.Forms.Forms.Init(this, bundle);
Xamarin.FormsMaps.Init(this, bundle);
LoadApplication(new App());
}
}
}
The code on MainPage.xaml is below:
<?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:local="clr-namespace:App3"
xmlns:maps="clr-namespace:Xamarin.Forms.Maps;assembly=Xamarin.Forms.Maps"
x:Class="App3.MainPage">
<StackLayout VerticalOptions="StartAndExpand" Padding="30">
<maps:Map WidthRequest="960" HeightRequest="700"
x:Name="MyMap"
IsShowingUser="True"
MapType="Street"
/>
</StackLayout>
</ContentPage>
The code in MainPage.xaml.cs is below:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Xamarin.Forms;
using Xamarin.Forms.Maps;
namespace App3
{
public partial class MainPage : ContentPage
{
public MainPage()
{
InitializeComponent();
MyMap.MoveToRegion(
MapSpan.FromCenterAndRadius(
new Position(37, -122), Distance.FromMiles(1)));
}
}
}
I am using Visual studio 2017 enterprise version 15.6. The build of the entire project is always successful.
Below are my androidManifest.xml file:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="1" android:versionName="1.0" package="com.companyname.app" android:installLocation="auto">
<uses-sdk android:targetSdkVersion="27" />
<application android:label="app3.android">
<meta-data
android:name="com.google.android.geo.API_KEY"
android:value="AIzaSyD1K1njDAN0"/>
</application>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
</manifest>
I really need help to display the map when I click on App3. Any help will be highly appreciated.

Answer 1

On Windows, if you're using Hyper-V for your emulator, you can try this:
Start Hyper V manager
Select your machine under 'Hyper-V Manager'
Under Virtual Machines, right click on the VS emulator you are
trying to run your app on, select Settings.
Expand the 'Processor' node, select Compatibility.
Check the 'Migrate to a physical
computer with a different processor version' box, click OK and try
running your app again.
Hope it helps. Cheers!