<LinearLayout

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical">

    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:background="#FFFFFF"

        android:padding="8dp"

        android:text="Hello"/>

    <ImageView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:src="@drawable/mountain"/>

    <Button

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:padding="8dp"

        android:background="#3A3A3A"

        android:text="Press me"

        android:onClick="doSomething"/>

</LinearLayout>