LinearLayout in Action

You have a drawable button_drawable inside the res/drawable folder.
Fill in the missing line to place this drawable inside the button under the "Play" text.

<Button
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Play"
    android:drawablePadding="4dp"
    _____________________ />