android.support.v7.widget.AppCompatTextView cannot be cast to android.widget.ImageView

Question

Here is the activity_main.xml file:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.issaayoub.materialtest.MainActivity">

    <include
        android:id="@+id/app_bar"
        layout="@layout/app_bar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <android.support.v4.widget.DrawerLayout
        android:id="@+id/drawer_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <RelativeLayout
            android:id="@+id/activity_main"
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <android.support.design.widget.TabLayout
                android:id="@+id/tabLayout"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:background="@color/colorPrimary"
                android:elevation="4dp">

                <android.support.design.widget.TabItem
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:icon="@drawable/an"
                    android:text="@string/bird1" />

            </android.support.design.widget.TabLayout>

            <android.support.v4.view.ViewPager
                android:id="@+id/viewpager"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_below="@id/tabLayout">

            </android.support.v4.view.ViewPager>
        </RelativeLayout>

        <fragment
            android:id="@+id/fragment_navigation_drawer"
            android:name="com.issaayoub.materialtest.NavigationDrawerFragment"
            android:layout_width="@dimen/navigation_drawer_width"
            android:layout_height="match_parent"
            android:layout_gravity="start"
            app:layout="@layout/fragment_navigation_drawer"
            tools:layout="@layout/fragment_navigation_drawer" />

    </android.support.v4.widget.DrawerLayout>
</LinearLayout>

Whenever I added the current TabItem inside the TabLayout I got the following error:

android.support.v7.widget.AppCompatTextView cannot be cast to android.widget.ImageView

When opening the details of the rendering problem I got the follows:

java.lang.ClassCastException: android.support.v7.widget.AppCompatTextView cannot be cast to android.widget.ImageView
    at android.support.design.widget.TabLayout$TabView.update(TabLayout.java:1675)
    at android.support.design.widget.TabLayout$TabView.setTab(TabLayout.java:1627)
    at android.support.design.widget.TabLayout.createTabView(TabLayout.java:927)
    at android.support.design.widget.TabLayout.newTab(TabLayout.java:562)
    at android.support.design.widget.TabLayout.addTabFromItemView(TabLayout.java:481)
    at android.support.design.widget.TabLayout.addViewInternal(TabLayout.java:970)
    at android.support.design.widget.TabLayout.addView(TabLayout.java:960)
    at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:862)
    at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:70)
    at android.view.LayoutInflater.rInflate(LayoutInflater.java:834)
    at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:821)
    at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:861)
    at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:70)
    at android.view.LayoutInflater.rInflate(LayoutInflater.java:834)
    at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:821)
    at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:861)
    at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:70)
    at android.view.LayoutInflater.rInflate(LayoutInflater.java:834)
    at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:821)
    at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:861)
    at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:70)
    at android.view.LayoutInflater.rInflate(LayoutInflater.java:834)
    at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:821)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:518)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
    at com.android.layoutlib.bridge.impl.RenderSessionImpl.inflate(RenderSessionImpl.java:324)
    at com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:429)
    at com.android.ide.common.rendering.LayoutLibrary.createSession(LayoutLibrary.java:389)
    at com.android.tools.idea.rendering.RenderTask$2.compute(RenderTask.java:548)
    at com.android.tools.idea.rendering.RenderTask$2.compute(RenderTask.java:533)
    at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:966)
    at com.android.tools.idea.rendering.RenderTask.createRenderSession(RenderTask.java:533)
    at com.android.tools.idea.rendering.RenderTask.lambda$inflate$53(RenderTask.java:659)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)

Could someone please highlight out what is the problem with the TabItem.

Removing the TabItem will remove all this error. Finally, please note that the application is running normally without any error on the phone/emulator.

Thanks for help!!

Answer 1

Nothing worked out. I restarted Android Studio and the error was removed.
Please note that we can add both a text and an icon. Here is a picture for of layout of the application: