Xamarin Android installs 3 times the same app on VS Emulator - visual-studio

Every time I debug, it installs 3 apps. I don't have idea why.
Image of emulator
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:installLocation="auto">
<uses-sdk android:minSdkVersion="10" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<application android:theme="#style/Theme.Trunk"></application>
</manifest>

As pointed out in the comments. You have probably copied the [Activity] attribute from somewhere and included MainLauncher = true in two other Activities.
Remove MainLauncher = true from those Activities and it should only show one launcher.

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The application is rejected every time,
Here is the list of authorizations declared in my manifest:
<uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.SEND_SMS" /> <uses-permission android:name="android.permission.READ_SMS" /> <uses-permission android:name="android.permission.CALL_PHONE" />

IncompatibleClassChangeError on Android using Xamarin

I wan't to compile my project on Android and I got this following error :
Java.Lang.IncompatibleClassChangeError: 'No static method getFont(Landroid/content/Context;ILandroid/util/TypedValue;ILandroid/widget/TextView;)Landroid/graphics/Typeface; in class Landroid/support/v4/content/res/ResourcesCompat; or its super classes (declaration of 'android.support.v4.content.res.ResourcesCompat' appears in /data/app/Digibois.LogiStock--0DmxMZxf8_3l0NMh1wijQ==/base.apk)'
There is my manifest :
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="1" android:versionName="1.3.4.0" package="Digibois.LogiStock" android:installLocation="auto">
<uses-sdk android:minSdkVersion="23" android:targetSdkVersion="27" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.AUTHENTICATE_ACCOUNTS" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<application android:label="LogiStock" android:icon="#drawable/icon"></application>
</manifest>
Im using an emulator with Android 6.0 API 23. I also tried with Android 8.1 API 27.
I tried to search a lot of solution but I found anything about it.
Thank's for your help !
Having a check with whether installing Xamarin.Android.Support.v4 NugetPackage :
In addition , to be sure the environment is no problem with Setting up the Android SDK for Xamarin.Android.

android.os.FileUriExposedException Error - XAMARIN

I'm trying to do the file picker thing, and it works with lower SDK versions but in this case (android 7.1) it requires the FileProvider.
The thing is that I have seen a lot of answers on the internet and I think that's all OK with my code. What do you think? Why can't I find the reference to the FileProvider in my class?
Hope someone has the idea why this is not working for me, here is the code:
AndroidManifest.xml:
<?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.AppQ4evo" android:installLocation="preferExternal">
<uses-sdk android:minSdkVersion="16" android:targetSdkVersion="27" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS" />
<uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.CONTROL_LOCATION_UPDATES" />
<uses-permission android:name="android.permission.LOCATION_HARDWARE" />
<uses-permission android:name="android.permission.INSTALL_LOCATION_PROVIDER" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<application android:label="AppQ4evo.Android" android:icon="#drawable/srw_circular">
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="${applicationId}.com.companyname.AppQ4evo.fileprovider"
android:grantUriPermissions="true"
android:exported="false">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="#xml/filepaths" />
</provider>
</application>
</manifest>
Resources/xml/filepaths.xml:
<?xml version="1.0" encoding="utf-8" ?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
<external-path name="external_files" path="."/>
</paths>
EDIT1(The Error):
So this was not easy to find out, but it look's like I need to add-in this extention:
https://marketplace.visualstudio.com/items?itemName=EgorBogatov.XamarinGradleBindings#qna
By add-in this you can now add references to the android directly like, and-in references from java(In my case FileProvider).
The tutorial for this is right in this link at github:
https://github.com/EgorBo/Xamarin.GradleBindings
Hope it helps people with this problem.

xamarin.android [INSTALL_PARSE_FAILED_MANIFEST_MALFORMED]

I am developing an App with Google Maps and I have some difficulties in making it run on a Genymotion Emulator (Nexus 5 API 22)
Here's the message I got :
Installing application on device
Deployment failed because of an internal error: Unexpected install output: pkg:
/data/local/tmp/com.companyname.progettocomputergraphics-Signed.apk
Failure [INSTALL_PARSE_FAILED_MANIFEST_MALFORMED]
Deployment failed. Internal error.
and thats my android manifest:
<?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.progettocomputergraphics">
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.MAPS_RECEIVE" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-feature android:glEsVersion="0x00020000" android:required="true" />
<permission android:name="com.companyname.progettocomputergraphics.MAPS_RECEIVE" android:protectionLevel="signature" />
<uses-sdk android:targetSdkVersion="22" android:minSdkVersion="15" />
<application android:label="progettocomputergraphics" android:icon="#drawable/Icon">
<meta-data android:name="com.google.android.gsm.version" android:value="#integer/google_play_services_version" />
<meta-data android:name="com.google.android.maps.v2.API_KEY" android:value="my_API_Key" />
<service android:name=".ItineraryService"></service>
<receiver android:name=".RoutesRecevier" />
<activity android:name=".MapActivity">
<intent-filler>
<category android:name="android.intnet.category.LAUNCHER" />
</intent-filler>
</activity>
<activity android:name=".InfoActivity">
<meta-data android:name="android.support.PARENT_ACTIVITY" android:value="MapActivity" />
</activity>
</application>
</manifest>
Can anyone help me?
I've got the same issue (in my case using App Center Push SDK).
The issue was solved by avoiding uppercase on first letter of application/package name.
The first thing I will try to modify uses-permission tag:
<permission android: name = "com.companyname.progettocomputergraphics.MAPS_RECEIVE" android: ProtectionLevel = "signature" />
In my case I had to use
<meta-data android:name="com.google.android.maps.v2.API_KEY" android:value="AIzaSyBFdb7p_3FTSQWX-sfOniZmQrsBHnM0Bu.."/>
in manifest

AdMob - You must have AdActivity declared in AndroidManifest.xml with configChanges

I am trying to get admob to work in my Xamarin Android application but I get the following message when trying to display an add:
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I ave added the Xamarin google play service to my application.
I am set the java heap size to 1G and build with API level 14
I have googled the error message and most answerspoint to the manifest file that needs to include two entries. I have added the entries but still have the problem.
Any idea what I am doing wrong? Here is my Manifest file:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="1" android:installLocation="auto" android:versionName="1.0">
<uses-sdk />
<application android:label="Aftermath">
<meta-data android:name="com.google.android.gms.version" android:value="#integer/google_play_services_version" />
<activity android:name="com.google.android.gms.ads.AdActivity" android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize" />
</application>
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
</manifest>
Thanks

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