title: How to get provider authorities value from an Android manifest file programmatically in Xamarin Forms?
body: <p>I'm developing an Android with Xamarin.Forms, and I'm using the AndroidManifest.xml file shown below.</p>
  
  <pre><code>&lt;manifest xmlns:android="http://schemas.android.com/apk/res/android" 
        android:versionCode="1" android:versionName="1.0"&gt;
  &lt;uses-sdk android:minSdkVersion="26" android:targetSdkVersion="26" /&gt;
  &lt;uses-permission android:name="android.permission.CAMERA" /&gt;
  &lt;uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /&gt;
  &lt;uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /&gt;
  &lt;application android:label="MyApp.Android"&gt;
      &lt;provider
          android:name="android.support.v4.content.FileProvider"
          android:authorities="myapp.fileprovider"
          android:exported="false"
          android:grantUriPermissions="true"&gt;
          &lt;meta-data
            android:name="android.support.FILE_PROVIDER_PATHS"
            android:resource="@xml/provider_file_paths" /&gt;
      &lt;/provider&gt;
  &lt;/application&gt;
  </code></pre>
  
  <p></p>
  
  <p>I'd like to get the <code>android:authorities</code> value of the <code>provider</code> directive (in my case "myapp.fileprovider" as string) programmatically.
  How is this possible with Xamarin.Forms?</p>