Navigation drawer below Actionbar

问题:

Right now I just started a project in Android Studio with the NavigationBar as preconfigured in the template. Apparently it puts the navigation drawer behind the actionbar. Many questions you find want the navigation drawer on top of the actionbar, I would like to have it start below the actionbar. This is what I currently have:

eventually desired situation:

I have found this solution, but I think there should be an easier way.

回答1:

Apply this attribute to your root viewgroup android:layout_marginTop="?android:attr/actionBarSize". Hope this helps.

回答2:

Try this MainActivity layout:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools">
    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/app_bar"
        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>
    <android.support.v4.widget.DrawerLayout
        android:id="@+id/drawer_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginTop="?attr/actionBarSize"
        android:fitsSystemWindows="true">
        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:paddingBottom="@dimen/activity_vertical_margin"
            android:paddingLeft="@dimen/activity_horizontal_margin"
            android:paddingRight="@dimen/activity_horizontal_margin"
            android:paddingTop="@dimen/activity_vertical_margin"
            app:layout_behavior="@string/appbar_scrolling_view_behavior"
            tools:showIn="@layout/app_bar_main">
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Put your content View here!" />
        </RelativeLayout>
        <android.support.design.widget.NavigationView
            android:id="@+id/nav_view"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_gravity="start"
            app:headerLayout="@layout/nav_header_main"
            app:menu="@menu/activity_main_drawer" />
    </android.support.v4.widget.DrawerLayout>
</RelativeLayout>