activity_loading.xml

<LinearLayout 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:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingLeft="18dp"
    android:paddingRight="18dp"
    android:paddingTop="@dimen/widget_margin"
    android:paddingBottom="@dimen/widget_margin"
    android:background="@drawable/gradation">

    <ImageView
        android:id="@+id/icon"
        android:layout_width="200dp"
        android:layout_height="200dp"
        android:layout_margin="100dp"
        android:src="@drawable/clear_sky"
        android:contentDescription="@string/todo"
        tools:srcCompat="@tools:sample/avatars" />

    <TextView
        android:id="@+id/appname"
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:text="mayweather"
        android:textSize="40sp" />

    <TextView
        android:id="@+id/made"
        android:layout_width="200dp"
        android:layout_height="50dp"
        android:layout_margin="90dp"
        android:text="made by Cyu, Japark" />
</LinearLayout>