title: Xamarin app doesn't recognize any bluetooth device (Plugin.BluetoothLE)
body: <p>I am using Plugin.BluetoothLE for making app in combination with arduino project. So for mobile app I am using Xamarin forms and Plugin.BluetoothLE library. Problem is that my mobile device doesn't recognize any bluetooth device. This is my code snippet from view model where I scan devices.</p>
  
  <pre><code>private void BtnFindHandler()
  {
    if (CrossBleAdapter.Current.Status != AdapterStatus.PoweredOn)
    {
      Debug.WriteLine("Bluetooth is not turned on.");
        return;
    }
  
    if (CrossBleAdapter.Current.IsScanning)
      CrossBleAdapter.Current.StopScan();
  
    var scanner = CrossBleAdapter.Current.Scan().Subscribe(scanResult =&gt;
    {
      if (scanResult.Device.Name != null)
        Debug.WriteLine(scanResult.Device.Name);
    });
  }
  </code></pre>
  
  <p>And this is my Android manifest file.</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="1" android:versionName="1.0" package="com.companyname.appname" android:installLocation="preferExternal"&gt;
      &lt;uses-sdk android:minSdkVersion="23" android:targetSdkVersion="28" /&gt;
    &lt;uses-permission android:name="android.permission.BLUETOOTH" /&gt;
    &lt;uses-permission android:name="android.permission.BLUETOOTH_ADMIN" /&gt;
    &lt;uses-permission android:name="android.permission.BLUETOOTH_PRIVILEGED" /&gt;
    &lt;uses-permission android:name="android.permission.LOCATION_HARDWARE" /&gt;
    &lt;uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /&gt;
    &lt;uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /&gt;
    &lt;uses-feature android:name="android.hardware.bluetooth_le" android:required="true" /&gt;
      &lt;application android:label="TestArduino.Android" android:icon="@mipmap/ic_launcher"&gt;&lt;/application&gt;
  &lt;/manifest&gt;
  </code></pre>
  
  <p>Also in MainActivity.cs, I am asking user explicitly for some some permissions and there is code for that.</p>
  
  <pre><code> protected override void OnCreate(Bundle bundle)
   {
     TabLayoutResource = Resource.Layout.Tabbar;
     ToolbarResource = Resource.Layout.Toolbar;
  
     base.OnCreate(bundle);
  
     global::Xamarin.Forms.Forms.Init(this, bundle);
     LoadApplication(new App(new AndroidInitializer()));
  
     RequestPermissions(new[]
     {
        Manifest.Permission.AccessCoarseLocation,
        Manifest.Permission.BluetoothPrivileged
        }, 0);
   }
  </code></pre>
  
  <p>Also I was trying to set manualy permission for my app, but with no success at all.
  Thank you very much :)</p>