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I have an app developed with Xamarin Android. This app works fine in all android's Versions, but in Android Oreo (27) the app has a double black navigation bar like the Image.

I has proofed changing the styles in all possible forms, but this not works.

Someone know how remove this black space of my Xamarin Android App?. Thanks.

EDIT

My Code for styles is:

<resources>

 <style name="MyTheme.NoActionBar" parent="Theme.AppCompat.Light.NoActionBar">
 <item name="android:colorPrimary">@color/color_primary</item>
 <item name="android:colorPrimaryDark">@color/color_primary_dark</item>
 <item name="colorAccent">@color/color_accent</item>
 <item name="android:colorActivatedHighlight">@color/color_accent</item>
 <item name="android:colorPressedHighlight">@color/color_accent</item>
 <item name="android:colorLongPressedHighlight">@color/color_accent</item>
 <item name="android:colorFocusedHighlight">@color/color_accent</item>
 <item name="android:statusBarColor">@color/color_accent</item>
 <item name="drawerArrowStyle">@style/MyDrawerArrowToggle</item>
 <item name="android:typeface">serif</item>
 </style>

 <style name="MyTheme.NoActionBar.Transparent" parent="MyTheme.NoActionBar">
 <item name="android:windowContentOverlay">@null</item>
 <item name="android:windowTranslucentStatus">true</item>
 <item name="android:windowTranslucentNavigation">true</item>
 <item name="windowActionBarOverlay">true</item>
 </style>

 <style name="MyDrawerArrowToggle" parent="Widget.AppCompat.DrawerArrowToggle">
 <item name="color">@color/white</item>
 </style>

 <style name="Divider">
 <item name="android:layout_width">match_parent</item>
 <item name="android:layout_height">1dp</item>
 <item name="android:background">?android:attr/listDivider</item>
 </style>

</resources>

I don't know what is the error, but I fixed it changing the "Destiny Android Version" in the properties. Android 8.1 (27) instead "Use compile using SDK Version"

I not change the Android Version for compile.

And now my app is fine.