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

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@android:color/black">

    <ImageView
        android:id="@+id/smartchat"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:adjustViewBounds="true"
        android:contentDescription="@string/app_name" />

    <Button
        android:id="@+id/upload"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/upload" />
</RelativeLayout>
<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@android:color/black">

    <ImageView
        android:id="@+id/smartchat"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:adjustViewBounds="true"
        android:contentDescription="@string/app_name" />

    <Button
        android:id="@+id/upload"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:layout_alignParentBottom="true"
        android:text="@string/upload" />
</RelativeLayout>
Move upload button to bottom center
Move upload button to bottom center
