应用程序未使用全屏幕宽度(Actionbar)

当涉及到我的应用程序(附件)的宽度时,我面临一个问题。因为我使用的是actionbar,所以似乎没有使用屏幕的全宽,而“Settings”(设置)菜单出现的空间占用了屏幕的剩余宽度。既然我没有使用“设置”菜单,有没有办法使用全屏?

app\u bar\u main.xml:

<?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.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_main" />

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

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:context="com.example.simple.activities.MainActivity"
    tools:showIn="@layout/app_bar_main">

    <RelativeLayout
        android:id="@+id/master_fragment"
        android:layout_width="368dp"
        android:layout_height="495dp"
        tools:layout_editor_absoluteX="8dp"
        tools:layout_editor_absoluteY="8dp">

    </RelativeLayout>
</android.support.constraint.ConstraintLayout>

当前_fragment.xml:

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.simple.fragments.Notifier">

    <!-- TODO: Update blank fragment layout -->

    <TabHost
        android:id="@+id/tab_host"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical">

            <TabWidget
                android:id="@android:id/tabs"
                android:layout_width="match_parent"
                android:layout_height="wrap_content" />

            <FrameLayout
                android:id="@android:id/tabcontent"
                android:layout_width="match_parent"
                android:layout_height="match_parent">

                <include android:id="@+id/layout1"
                    layout="@layout/activity_hour_notification"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"></include>

                <include android:id="@+id/layout2"
                    layout="@layout/activity_minute_notification"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"></include>

            </FrameLayout>
        </LinearLayout>
    </TabHost>
</FrameLayout>

谢谢你在这方面的帮助!