facedetection.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <com.google.android.material.floatingactionbutton.FloatingActionButton
        android:id="@+id/btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:src="@drawable/ic_camera_black_24dp"
        app:backgroundTint="@color/colorPrimaryDark"
        app:fabSize="normal"
        app:maxImageSize="40dp"/>

    <ImageButton
        android:id="@+id/imgbtn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_marginStart="20dp"
        android:layout_marginBottom="5dp"
        android:layout_marginLeft="20dp"
        android:layout_toRightOf="@id/btn"
        android:src="@drawable/ic_camera_alt_black_24dp" />


    <TextView
        android:id="@+id/output"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/progress_horizontal"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="10dp"
        android:text="output"
        android:textColor="#000"
        android:textSize="17sp" />

    <FrameLayout
        android:id="@+id/frame"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_above="@id/btn">


    <com.camerakit.CameraKitView
        android:id="@+id/camera"
        android:layout_width="match_parent"
        android:layout_height="400dp"
        android:adjustViewBounds="true"
        android:keepScreenOn="true"
        app:camera_facing="front"
        app:camera_flash="auto"
        app:camera_focus="continuous"
        app:camera_permissions="camera">

    </com.camerakit.CameraKitView>
    </FrameLayout>

    <ProgressBar
        android:id="@+id/progress_horizontal"
        style="@style/Widget.AppCompat.ProgressBar.Horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/frame"
        android:indeterminate="true"
        android:indeterminateBehavior="repeat"
        android:visibility="invisible" />

    <com.example.machine_learning.GraphicOverlay
    android:id="@+id/graphic_overlay"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

</RelativeLayout>