thmodelAndroid/uikit/res/layout/nim_preview_image_from_camera_activity.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:background="@color/black"
    android:orientation="vertical">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/app_bar_layout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay"
        app:elevation="0dp">
        <View
            android:id="@+id/statusBar"
            android:layout_width="match_parent"
            android:layout_height="20dp"/>
        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:titleTextAppearance="@style/Toolbar.TitleText">

            <include layout="@layout/nim_action_bar_right_clickable_tv" />
        </android.support.v7.widget.Toolbar>
    </android.support.design.widget.AppBarLayout>

    <ImageView
            android:id="@+id/imageViewPreview"
            android:layout_width="fill_parent"
            android:layout_height="0dip"
            android:layout_weight="1"
            android:contentDescription="@string/empty" />

    <Button
            android:layout_marginBottom="20dp"
            android:id="@+id/buttonSend"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:layout_marginLeft="10dip"
            android:layout_marginRight="10dip"
            android:background="@drawable/nim_message_button_bottom_send_selector"
            android:gravity="center"
            android:text="@string/send"
            android:textColor="@color/white"
            android:textSize="17sp" />

</LinearLayout>