I'm getting this error when running 'My First App' from Android Developer
tutorial:
java.lang.IllegalStateException: This Activity already has an action bar
supplied by the window decor. Do not request
Window.FEATURE_SUPPORT_ACTION_BAR and set windowActionBar to false in your
theme to use a Toolbar instead
My Acitivity_Display_Message.mxl looks like this:
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
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:fitsSystemWindows="true"
tools:context="com.example.jamesmontgomery.myapplication.DisplayMessageActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="@style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<include layout="@layout/content_display_message" />
<android.support.design.widget.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="@dimen/fab_margin"
android:src="@android:drawable/ic_dialog_email" />
</android.support.design.widget.CoordinatorLayout>
How do I solve this error?
I would assume that I would need to insert code like ' <item
name="android:windowActionBar">false</item>' somewhere here?
I can include my java code if it will help, but I'm sure there error is in the
display message xml
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