无法转换类型的实例＆＃39; Android.Support.V7.Widget.AppCompatTextView＆＃39;输入＆＃39; Android.Support.V7.Widget.Toolbar＆＃39; android 7.0

Question

我在Device中运行应用程序，在Android 7.0中运行时出现此错误

我使用的是这个版本：

我的xamarin版本是：

<?xml version="1.0" encoding="utf-8" ?>
<resources>

  <style name="MainTheme" parent="MainTheme.Base">
  </style>
  <!-- Base theme applied no matter what API -->
  <style name="MainTheme.Base" parent="Theme.AppCompat.Light.DarkActionBar">
    <!--If you are using revision 22.1 please use just windowNoTitle. Without android:-->
    <item name="windowNoTitle">true</item>
    <!--We will be using the toolbar so no need to show ActionBar-->
    <item name="windowActionBar">true</item>
    <!-- Set theme colors from http://www.google.com/design/spec/style/color.html#color-color-palette -->
    <!-- colorPrimary is used for the default action bar background -->
    <item name="colorPrimary">#39b549</item>
    <!-- colorPrimaryDark is used for the status bar -->
    <item name="colorPrimaryDark">#4d4d4d</item>
    <!-- colorAccent is used as the default value for colorControlActivated
         which is used to tint widgets -->
    <item name="colorAccent">#4d4d4d</item>
    <!-- You can also set colorControlNormal, colorControlActivated
         colorControlHighlight and colorSwitchThumbNormal. -->
    <item name="windowActionModeOverlay">true</item>

    <item name="android:datePickerDialogTheme">@style/AppCompatDialogStyle</item>
  </style>

  <style name="AppCompatDialogStyle" parent="Theme.AppCompat.Light.Dialog">
    <item name="colorAccent">#39b549</item>
  </style>

  <style name="MyTheme.Base" parent="Theme.AppCompat.Light">
  </style>

  <style name="MyTheme.Splash" parent ="Theme.AppCompat.Light.NoActionBar">
    <item name="android:windowBackground">@drawable/splash_screen_jpg</item>
  </style>
</resources>

我不知道是什么导致这个错误，甚至知道在哪里可以找到更多的东西。 在其他版本的android运行正常。