activity_splash_screen.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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:background="@color/colorPrimary"
    tools:context=".SplashScreenActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:gravity="center"
        android:layout_centerInParent="true">

        <ImageView
            android:id="@+id/logo"
            android:layout_width="80dp"
            android:layout_height="80dp"
            android:src="@drawable/ic_school_black_24dp"/>

        <TextView
            android:id="@+id/app_label"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="SEKOLAHKU"
            android:textSize="50sp"
            android:textStyle="bold"
            android:textColor="@android:color/white"/>

    </LinearLayout>

    <ProgressBar
        android:id="@+id/progressbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        style="?android:attr/progressBarStyleHorizontal"/>

</RelativeLayout>