FastDeploy/java/android/app/src/main/res/layout/activity_main.xml

<?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"
    android:keepScreenOn="true"
    tools:context="com.baidu.paddle.fastdeploy.app.examples.detection.MainActivity">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/colorWindow">

        <com.baidu.paddle.fastdeploy.app.ui.ActionBarLayout
            android:id="@+id/action_bar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <ImageView
                android:id="@+id/back_in_preview"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:cropToPadding="true"
                android:paddingLeft="40px"
                android:paddingTop="60px"
                android:paddingRight="60px"
                android:paddingBottom="40px"
                android:src="@drawable/back_btn" />

            <LinearLayout
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_centerHorizontal="true"
                android:layout_marginTop="50px"
                android:orientation="horizontal">

                <TextView
                    android:id="@+id/action_takepicture_btn"
                    style="@style/action_btn_selected"
                    android:layout_width="300px"
                    android:layout_height="wrap_content"
                    android:text="@string/action_bar_take_photo"
                    android:textAlignment="center"
                    android:visibility="gone" />

                <TextView
                    android:id="@+id/action_realtime_btn"
                    style="@style/action_btn"
                    android:layout_width="300px"
                    android:layout_height="wrap_content"
                    android:text="@string/action_bar_realtime"
                    android:textAlignment="center" />
            </LinearLayout>

        </com.baidu.paddle.fastdeploy.app.ui.ActionBarLayout>

        <!--        时实-->
        <com.baidu.paddle.fastdeploy.app.ui.CameraSurfaceView
            android:id="@+id/sv_preview"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_above="@+id/contral"
            android:layout_below="@+id/action_bar"
            android:layout_centerInParent="true" />

        <ImageView
            android:id="@+id/albumSelect"
            android:layout_width="40dp"
            android:layout_height="40dp"
            android:layout_alignParentRight="true"
            android:layout_alignParentBottom="true"
            android:layout_marginRight="20dp"
            android:layout_marginBottom="145dp"
            android:background="@drawable/album_btn"
            android:scaleType="fitXY"
            android:visibility="gone"/>

        <TextView
            android:id="@+id/tv_status"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:layout_marginTop="60dp"
            android:layout_marginRight="30dp"
            android:textColor="@color/colorText"
            android:textSize="@dimen/small_font_size" />

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="@dimen/top_bar_height"
            android:layout_alignParentTop="true"
            android:background="@color/colorTopBar">

            <ImageButton
                android:id="@+id/btn_settings"
                android:layout_width="30dp"
                android:layout_height="30dp"
                android:layout_alignParentRight="true"
                android:layout_centerVertical="true"
                android:layout_marginRight="10dp"
                android:background="@null"
                android:scaleType="fitXY"
                android:src="@drawable/btn_settings" />

        </RelativeLayout>

        <LinearLayout
            android:id="@+id/contral"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentBottom="true"
            android:background="@color/colorBottomBar"
            android:orientation="vertical">

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="@dimen/bottom_bar_top_margin"
                android:orientation="vertical"></LinearLayout>

            <RelativeLayout
                android:layout_width="match_parent"
                android:layout_height="@dimen/large_button_height">

                <ImageButton
                    android:id="@+id/btn_switch"
                    android:layout_width="60dp"
                    android:layout_height="60dp"
                    android:layout_alignParentLeft="true"
                    android:layout_centerVertical="true"
                    android:layout_marginLeft="60dp"
                    android:background="#00000000"
                    android:scaleType="fitXY"
                    android:src="@drawable/switch_side_btn" />

                <ImageButton
                    android:id="@+id/btn_shutter"
                    android:layout_width="@dimen/large_button_width"
                    android:layout_height="@dimen/large_button_height"
                    android:layout_centerInParent="true"
                    android:background="@null"
                    android:scaleType="fitXY"
                    android:src="@drawable/take_picture_btn" />

                <ImageView
                    android:id="@+id/realtime_toggle_btn"
                    android:layout_width="60dp"
                    android:layout_height="60dp"
                    android:layout_alignParentRight="true"
                    android:layout_centerVertical="true"
                    android:layout_marginRight="60dp"
                    android:scaleType="fitXY"
                    android:src="@drawable/realtime_stop_btn" />

            </RelativeLayout>

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="@dimen/bottom_bar_bottom_margin"
                android:orientation="vertical"></LinearLayout>
        </LinearLayout>
    </RelativeLayout>
</android.support.constraint.ConstraintLayout>