ISCS_BASE_APP/iscs_mc/src/main/res/layout/activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<layout 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">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@drawable/bg_main"
        android:fitsSystemWindows="true"
        android:orientation="vertical">


        <FrameLayout
            android:id="@+id/header_layout"
            android:layout_width="match_parent"
            android:layout_height="@dimen/header_height"
            android:layout_margin="@dimen/iscs_space_2"
            android:paddingHorizontal="@dimen/iscs_space_1">

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

                <FrameLayout
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:layout_weight="1"
                    android:background="@drawable/bg_home_header"
                    android:orientation="horizontal">

                    <ImageView
                        android:layout_width="@dimen/header_logo_width"
                        android:layout_height="@dimen/header_logo_height"
                        android:layout_gravity="center_vertical"
                        app:skinSrc='@{"icon_logo.png"}' />

                    <TextClock
                        android:layout_width="wrap_content"
                        android:layout_height="match_parent"
                        android:layout_gravity="right"
                        android:format12Hour="yyyy-MM-dd HH:mm:ss"
                        android:format24Hour="yyyy-MM-dd HH:mm:ss"
                        android:gravity="center"
                        android:paddingHorizontal="@dimen/iscs_space_1"
                        android:textColor="?attr/colorTextPrimary"
                        android:textSize="@dimen/iscs_text_md" />
                </FrameLayout>

                <LinearLayout
                    android:id="@+id/user_info_layout"
                    android:layout_width="wrap_content"
                    android:layout_height="match_parent"
                    android:layout_marginLeft="@dimen/iscs_space_2"
                    android:background="@drawable/bg_card_blue_radius_md"
                    android:orientation="horizontal"
                    android:paddingHorizontal="@dimen/iscs_space_2">

                    <ImageView
                        android:id="@+id/avatar"
                        android:layout_width="@dimen/avatar_size"
                        android:layout_height="@dimen/avatar_size"
                        android:layout_gravity="center_vertical"
                        android:padding="@dimen/iscs_space_1"
                        android:src="@mipmap/icon_avatar"
                        android:tint="?attr/colorWhite" />

                    <TextView
                        android:id="@+id/nickname"
                        android:layout_width="wrap_content"
                        android:layout_height="match_parent"
                        android:layout_marginLeft="@dimen/iscs_space_2"
                        android:ellipsize="end"
                        android:gravity="center"
                        android:maxLength="13"
                        android:singleLine="true"
                        android:textColor="?attr/colorTextPrimary"
                        android:textSize="@dimen/iscs_text_md"
                        tools:text="张三" />
                </LinearLayout>
            </LinearLayout>
        </FrameLayout>

        <androidx.fragment.app.FragmentContainerView
            android:id="@+id/nav_host_fragment"
            android:name="androidx.navigation.fragment.NavHostFragment"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_above="@+id/bottom_layout"
            android:layout_below="@+id/header_layout"
            app:defaultNavHost="true"
            app:navGraph="@navigation/nav_home" />

        <FrameLayout
            android:id="@+id/bottom_layout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentBottom="true">

            <TextView
                android:id="@+id/bottom_tip"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_vertical"
                android:layout_marginLeft="@dimen/iscs_space_4"
                android:drawableLeft="@mipmap/tip"
                android:drawablePadding="@dimen/iscs_space_2"
                android:textColor="?attr/colorTextPrimary"
                android:textSize="@dimen/iscs_text_md"
                android:visibility="gone" />

            <com.grkj.ui_base.widget.CustomNavBar
                android:id="@+id/nav_bar"
                android:layout_width="match_parent"
                android:layout_height="@dimen/home_bottom_nav_size"
                app:navBarBackground="?attr/colorSecBg"
                app:navIconSelectedSize="@dimen/home_bottom_nav_icon_size"
                app:navIconSize="@dimen/home_bottom_nav_icon_size"
                app:navOrientation="horizontal"
                app:navTextSelectedSize="@dimen/iscs_text_sm"
                app:navTextSize="@dimen/iscs_text_sm" />
        </FrameLayout>

    </RelativeLayout>
</layout>