Android.Views.InflateException Binary XML file line #1 in layout/toolbar: Error inflating class androidx.appcompat.widget.Toolbar

Question

In a xamarin.forms android project, MainActivity.cs contains:

  [Activity (Label = "Almicantarat", Theme = "@style/MainTheme",  
  Icon = "@drawable/almicantarat_launcher",   
  MainLauncher = true,  
  ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation)]  
  public class MainActivity : global::Xamarin.Forms.Platform.Android.FormsAppCompatActivity  
  {  

I need to remove:

Theme = "@STYLE /MainTheme",

in order to use a custom theme and a toolbar.

But then I met the following exception:

Android.Views.InflateException
Message=Binary XML file line #1 in almicantarat.almicantarat:layout/toolbar: Binary XML file line #1 in almicantarat.almicantarat:layout/toolbar: Error inflating class androidx.appcompat.widget.Toolbar

This is styles.xml:

<?xml version="1.0" encoding="utf-8" ?>  
<resources>  
  <style name="AlmicantaratTheme" parent="@android:Theme.Material">  
      <item name="android:windowNoTitle">true</item>  
      <item name="android:windowActionBar">false</item>  
      <item name="android:colorPrimary">#15014E</item>  
      <item name="android:colorPrimaryDark">#15014E</item>  
      <item name="android:navigationBarColor">#15014E</item>  
      <item name="android:statusBarColor">#15014E</item>  
      <item name="android:colorAccent">#FF4081</item>  
      <item name="android:windowActionModeOverlay">true</item>  
  </style>  
</resources>  

This is Toolbar.axml:

<androidx.appcompat.widget.Toolbar  
    xmlns:android="http://schemas.android.com/apk/res/android"  
    xmlns:app="http://schemas.android.com/apk/res-auto"  
    android:id="@+id/toolbar"  
    android:layout_width="match_parent"  
    android:layout_height="?attr/actionBarSize"  
    android:minHeight="?attr/actionBarSize"  
    android:background="?attr/colorPrimary"  
    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"  
    app:popupTheme="@style/ThemeOverlay.AppCompat.Light"  
    app:layout_scrollFlags="scroll|enterAlways" />  

How can I solve that?

hint: this is an long time running project started in 2014. It migrated successfully to AndroidX.
It targets SDK 29 and requires minimum SDK 21.

using VS2019
Xamarin.Forms v5.0.0.2125

Answer 1

Hello pierrelouisdeschamps-1678,​

Welcome to our Microsoft Q&A platform!

Error inflating class androidx.appcompat.widget.Toolbar

I tested the code and reproduced the issue on my side. This is because @android:Theme.Material theme is not applicable in AndroidX. Please using Theme.AppCompat.* instead. Such as:

   <style name="AlmicantaratTheme" parent="Theme.AppCompat.NoActionBar">  
     <item name="android:windowNoTitle">true</item>  
     <item name="android:windowActionBar">false</item>  
     <item name="android:colorPrimary">#15014E</item>  
     <item name="android:colorPrimaryDark">#15014E</item>  
     <item name="android:navigationBarColor">#15014E</item>  
     <item name="android:statusBarColor">#15014E</item>  
     <item name="android:colorAccent">#FF4081</item>  
     <item name="android:windowActionModeOverlay">true</item>  
   </style>  

Best Regards,

Jarvan Zhang

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Answer 2

Hello @JarvanZhang
Then I get the following build error:

resource android:style/Theme.AppCompat.NoActionBar not found.

What nuget package should I install?
I have already installed the following packages:

sqlite-net-pcl                      {1.8.116}      Almicantarat.Droid                                                           
SQLitePCLRaw.bundle_green           {2.0.6}        Almicantarat.Droid                                                           
SQLitePCLRaw.lib.e_sqlite3          {2.0.6}        Almicantarat.Droid                                                           
SQLitePCLRaw.provider.e_sqlite3.... {1.1.14}       Almicantarat.Droid                                                           
System.Memory                       {4.5.4}        Almicantarat.Droid                                                           
System.Numerics.Vectors             {4.5.0}        Almicantarat.Droid                                                           
System.Runtime.CompilerServices.... {5.0.0}        Almicantarat.Droid                                                           
UrhoSharp.Forms                     {1.9.67}       Almicantarat.Droid                                                           
Xamarin.AndroidX.Legacy.Support.... {1.0.0.8}      Almicantarat.Droid                                                           
Xamarin.AndroidX.Browser            {1.3.0.6}      Almicantarat.Droid                                                           
Xamarin.Google.Android.Material     {1.4.0.2}      Almicantarat.Droid                                                           
Xamarin.AndroidX.MediaRouter        {1.2.5}        Almicantarat.Droid                                                           
Xamarin.AndroidX.AppCompat          {1.3.1.1}      Almicantarat.Droid                                                           
Xamarin.AndroidX.AppCompat.AppCo... {1.3.1.1}      Almicantarat.Droid                                                           
Xamarin.AndroidX.AsyncLayoutInfl... {1.0.0.8}      Almicantarat.Droid                                                           
Xamarin.AndroidX.CardView           {1.0.0.9}      Almicantarat.Droid                                                           
Xamarin.AndroidX.CursorAdapter      {1.0.0.8}      Almicantarat.Droid                                                           
Xamarin.AndroidX.Legacy.Support.V4  {1.0.0.8}      Almicantarat.Droid                                                           
Xamarin.AndroidX.Lifecycle.LiveData {2.3.1.1}      Almicantarat.Droid                                                           
Xamarin.AndroidX.Media              {1.4.2}        Almicantarat.Droid                                                           
Xamarin.AndroidX.MultiDex           {2.0.1.8}      Almicantarat.Droid                                                           
Xamarin.AndroidX.Palette            {1.0.0.8}      Almicantarat.Droid                                                           
Xamarin.AndroidX.RecyclerView       {1.2.1.1}      Almicantarat.Droid                                                           
Xamarin.AndroidX.SwipeRefreshLayout {1.1.0.3}      Almicantarat.Droid                                                           
Xamarin.AndroidX.Transition         {1.4.1.1}      Almicantarat.Droid                                                           
Xamarin.Essentials                  {1.7.0}        Almicantarat.Droid                                                           
Xamarin.Forms                       {5.0.0.2125}   Almicantarat.Droid                                                           
Xamarin.Forms.Maps                  {5.0.0.2125}   Almicantarat.Droid                                                           
Xamarin.GooglePlayServices.Base     {117.6.0}      Almicantarat.Droid                                                           
Xamarin.GooglePlayServices.Maps     {117.0.1}      Almicantarat.Droid                                                           
Xamarin.AndroidX.Migration          {1.0.8}        Almicantarat.Droid  

The previous Xamarin.Android.Support.* packages had been uninstalled by the AndroidX migration tool.

regards,

Answer 3

my YouTube channel

Answer 4

sqlite-net-pcl {1.8.116} Almicantarat.Droid

SQLitePCLRaw.bundle_green {2.0.6} Almicantarat.Droid

SQLitePCLRaw.lib.e_sqlite3 {2.0.6} Almicantarat.Droid

SQLitePCLRaw.provider.e_sqlite3.... {1.1.14} Almicantarat.Droid

System.Memory {4.5.4} Almicantarat.Droid

System.Numerics.Vectors {4.5.0} Almicantarat.Droid

System.Runtime.CompilerServices.... {5.0.0} Almicantarat.Droid

UrhoSharp.Forms {1.9.67} Almicantarat.Droid

Xamarin.AndroidX.Legacy.Support.... {1.0.0.8} Almicantarat.Droid

Xamarin.AndroidX.Browser {1.3.0.6} Almicantarat.Droid

Xamarin.Google.Android.Material {1.4.0.2} Almicantarat.Droid

Xamarin.AndroidX.MediaRouter {1.2.5} Almicantarat.Droid

Xamarin.AndroidX.AppCompat {1.3.1.1} Almicantarat.Droid

Xamarin.AndroidX.AppCompat.AppCo... {1.3.1.1} Almicantarat.Droid

Xamarin.AndroidX.AsyncLayoutInfl... {1.0.0.8} Almicantarat.Droid

Xamarin.AndroidX.CardView {1.0.0.9} Almicantarat.Droid

Xamarin.AndroidX.CursorAdapter {1.0.0.8} Almicantarat.Droid

Xamarin.AndroidX.Legacy.Support.V4 {1.0.0.8} Almicantarat.Droid

Xamarin.AndroidX.Lifecycle.LiveData {2.3.1.1} Almicantarat.Droid

Xamarin.AndroidX.Media {1.4.2} Almicantarat.Droid

Xamarin.AndroidX.MultiDex {2.0.1.8} Almicantarat.Droid

Xamarin.AndroidX.Palette {1.0.0.8} Almicantarat.Droid

Xamarin.AndroidX.RecyclerView {1.2.1.1} Almicantarat.Droid

Xamarin.AndroidX.SwipeRefreshLayout {1.1.0.3} Almicantarat.Droid

Xamarin.AndroidX.Transition {1.4.1.1} Almicantarat.Droid

Xamarin.Essentials {1.7.0} Almicantarat.Droid

Xamarin.Forms {5.0.0.2125} Almicantarat.Droid

Xamarin.Forms.Maps {5.0.0.2125} Almicantarat.Droid

Xamarin.GooglePlayServices.Base {117.6.0} Almicantarat.Droid

Xamarin.GooglePlayServices.Maps {117.0.1} Almicantarat.Droid

Xamarin.AndroidX.Migration {1.0.8} Almicantarat.Droid