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Problem with adding Firebase Crashlytics in Xamarin Android project

I have some problem with adding Firebase Crashlytics in Xamarin Android project.
I created an empty android project in visual studio. Then I registered the application in google firebase console. Then downloaded google-services.json and put it in the project.
for this file set the build in googleservicejson mode.
Before that, I added the following nugget packages:
Xamarin.Android.Crashlytics
Xamarin.Android.Crashlytics.Answers
Xamarin.Android.Crashlytics.Beta
Xamarin.Android.Crashlytics.Core
In OnCreate method, I added the following code:
Fabric.Fabric.With (this, new Crashlytics.Crashlytics ());
Crashlytics.Crashlytics.HandleManagedExceptions ();
Also I add this meta data in AndroidManifest.xml
<meta-data android:name="io.fabric.ApiKey" android:value="firebase api key" />
Then I added this in strings.xml
<string name="com.crashlytics.android.home.firebaseandroid">33</string>
where home.firebaseandroid is my apk name
After cleaning and rebuild, when I launch the application it throw this exception:
Fabric.Services.Concurrency.UnmetDependencyException: 'This app relies on Crashlytics. Please sign up for access at https://fabric.io/sign_up,
install an Android build tool and ask a team member to invite you to this app's organization.'
As I understand, the application is looking for an api key for the Fabric, but I only have the api key from firebase.
Has anyone had a same problem?
Advise in what direction to look, please.
Thanks in advance.

If you're using a google services file, then you should not be specifying API keys in your AndroidManifest. The google services file already contains the API key that Crashlytics SDK is looking for.

If you want to try something else, see my comment on this issue here: https://github.com/xamarin/XamarinComponents/issues/760#issuecomment-579010612
This is the workaround I've found at that time (yes, I know it is not the last version, please keep reading):
I've fixed the issue at least for me. It seems that the issue was caused by
dependency interactions.
For anybody struggling with this, I've got it working by using exactly
the following versions:
Xamarin.Android.Crashlytics 2.9.4.1
Xamarin.Android.Crashlytics.Answers 1.4.2
Xamarin.Android.Crashlytics.Beta 1.2.9
Xamarin.Android.Crashlytics.Core 2.6.3 Xamarin.Android.Fabric 1.4.3
Xamarin.Build.Download 0.4.11
Installing Crashlytics will install Xamarin.Build.Download 0.7.1 as a
dependency, but (at least for me) it is not possible to get a proper
build anymore with that version. So this package should be downgraded
after it is installed.
Having said that; you must be aware of the imminent deprecation of this Crashlytics version based on Fabric, right?
All of us were received a mail from Google informing that:
We are writing to let you know that the Fabric Crashlytics SDK is now deprecated and will continue reporting your app's crashes until
November 15, 2020. After this date, the Fabric Crashlytics SDK and
beta versions of the Firebase Crashlytics SDK will stop sending crash
reports for your app.What happened?
We are replacing Fabric Crashlytics SDKs and beta versions of the Firebase Crashlytics SDKs with the generally available Firebase
Crashlytics SDKs.What's Next?
To continue getting crash reports in the Firebase console, make sure to upgrade your apps to the Firebase Crashlytics SDK versions
17.0.0+ for Android, 4.0.0+ for iOS, and 6.15.0+ for Unity before November 15, 2020.Android
So everything is going to change soon, and you shouldn't use the Fabric solution anymore, especially for new projects.
You can found the new official nuget package here, but it is a preview (the xamarin team is working on this, I guess, but they are dangerously near the deadline -as we all):
https://www.nuget.org/packages/Xamarin.Firebase.Crashlytics/117.0.0-preview02
This is the official repository issue to add comments:
https://github.com/xamarin/XamarinComponents/issues/956
I'm currently migrating my project to this new Crashlytics version, and one thing to keep in mind is that you need to use AndroidX (that was a problem for me, I'm working on an old project's maintenance, and the migration to AndroidX is not ready yet)
When you'll add this new package and the google-services.json you will need to change the following in your old code:
Every CrashLytics.Crashlytics reference will be just FirebaseCrashlytics.
No initialization is needed, you can get the FirebaseCrashlytics.Instance anywhere
To log an exception you will need to use the RecordException method instead of the old LogException
SetUserIdentifier is changed to SetUserId, and SetUserName is no longer there
There is no method to crash on purpose anymore, so now you have to simply throw any exception you want if you wanna test your implementation
Maybe I'm missing something, but basically, that's all.

Is Android Support Reposity includeable in Eclipse Neon?

for certain compatibility reasons, I have to use Eclipse Neon for Android Development to develop an android app. Therefore I also have to use the newest Android SDK so I can implement some newest features.
Now, I am facing the problem that I cannot compile any Android app with Eclipse, because I get errors like
The import android.support cannot be resolved
ActionBarActivity cannot be resolved to a type
Error retrieving parent for item: No resource found that matches the given name "ThemeAppCompat. …"
upon building. As I found out, this is because Eclipse is missing the "Android support library" (android support library.jar ?) in the sdk folder. The reason for this is, as I found out, that this library is obsolete and has been replaced by the "Android support repository". It has not been installed by the Android SDK manager and cannot be installed anymore, but Eclipse still needs it apparently.
I searched a lot for a solution for this but all answers I could find was "Swtich to Android Studio"… Unfortunately, there is no way around using Eclipse for me. Is there any known way to include the support repository and make eclipse use it? I found this site
https://developer.android.com/topic/libraries/support-library/setup.html
and thought, maybe I can follow these steps to make my app to a gradle.build and then include the stuff from the repository and get my stuff to work, but unfortunately I could not find a way to realize this.
I changed the related section in the gradle.build file to this:
…
dependencies {
…
compile 'com.android.support:appcompat-v7:24.0.0'
}
…
but could not get the app being built.
Is there any known solution for this? I actually cannot imagine that I am the only one trying to develop an Android App with the new support repository file these days. Should I maybe manually insert the obsolete (but newest) android support library.jar file from an older IDE? Could this work?
Thank you many times for your help.

Why do we need to copy the Google Play Services library in our project?

Why does Google have this note? [ref]
What is the harm in adding reference to the library in the SDK directory? I have done it and my app worked just fine.

I think maybe it could will change name in some sdk updates, so if you referece to your copy nothing can go wrong.
instead reference it on gradle to avoid this problem (Gradle work for us to avoid dependecy problem :)).

Yes, you can use it directly from there. I used to do it too till i realized what the problem could be.
If you are making no changes to the library it should work fine. But if you plan to add some build files or configuration etc you should copy it to the project. (I had some for my ant builds) If you dont have any, at the time of updating the library from SDK manager you lose everything you changed or configured. Apparently it deletes all unidentified or manually added stuff when updating the library.
With Android studio it is much simpler and you just add a dependency with required version to your build.gradle file.

What are the dependencies of Google Maps v2?

I am new to Android and want to embed Google Maps v2 to my application, but can anyone please tell me which dependencies should I install on phone or include to project?

Include Gradle dependency:
dependencies {
implementation 'com.google.android.gms:play-services-maps:16.1.0'
}
You may found Gradle, please helpful. Also, check out this page for Android APIs releases.

I assume you have already read https://developers.google.com/maps/documentation/android/ :-)
In short:
you need to download and install the Google Play service lib via SDK manager
create a project in Eclipse via "Create project from existing source code" and use the source code from "\android-sdk\extras\google\google_play_services\libproject\google-play-services_lib"
add this project as dependency to your actual project via right click on your project -> properties -> android -> add project library
add the permissions as described in the link mentioned above
request an API key as pointed out in the link above as well
add a SupportedMapFragment to your layout
you need an active Google account on the device to will test your map (it will install the required dependencies on the device automatically then)
That's it :-)
Hope that helps....

Import code issues google

I have been working with Java for about a couple of months now and I have been stuck introducing Google API into my Maps app. I need some help with these imports.
Here is what I did: I was following the code of a Places API demo which I can link if needed. I ended up having to add some libraries. Before I did, I was getting errors from all of the imports that started with com.google.api.client...etc. Then once I added all of these libraries, I then got left with 2 errors out of my imports.
The errors are: the "com.google.api.client.googleapis.GoogleHeaders" and "com.google.api.client.http.json.JsonHttpParser". I am receiving them both as "cannot be resolved to a type". These errors are causing some more errors throughout the rest of my code. I was hoping someone can help me solve this. I know it should have something to do with my code, but I am not sure what is going on. I know I am missing something.
Also, I installed the Google Plugin to install the APIs and when I did, I added the "Google + API" and the "GoogleOAuth2" APIs and that is where I am stuck at. Please someone help.
Here is the screenshot: Full Screenshot

I haven't worked with Maps, but as I understand it Maps is now packaged with Google Play Services, which I have been working with recently.
Firstly, the installation of Google Play Services is well-documented and you should look at this (if you haven't done so already):
http://developer.android.com/google/play-services/setup.html
There are a few areas that cause difficulty, and one is the section "Set Up a Project with the Library". There are different possible approaches but I suggest you take the following steps.
Ensure that the Google Play Services lib (and any other libs) are defined as library projects (Properties ...Android.. Library ...IsLibrary) and that they have no errors (cleaning may not be sufficient - you may have to shut down Eclipse to remove the errors).
When the library projects are error free, add them to your project. The normal way of doing this is to REFERENCE them (check what the documentation says) but you do this by (Properties ...Android.. Library ...Add).
Then check out (Properties ... Java Build Path ...) - read the documentation but you need your libs in here.
Then clean your project but note that a restart of Eclipse may be necessary to remove the errors from your project.
There are other errors that can arise - another common one arises if you have different versions of the v4 support lib in your libs / project and you get a message "...this check is based on SHA1 at this time". This is well documented on Stack Overflow.
Good luck !