AndroidSoundboard/app/src/main/res/layout/layout_button.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="2dp">
    <ProgressBar
        android:id="@+id/progress_bar"
        style="?android:attr/progressBarStyleHorizontal"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:indeterminate="false"
        android:progressDrawable="@drawable/progress_bar_states" />

    <TextView
        android:id="@+id/text_view_button"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="center"
        android:padding="6dp"
        android:text="Enter"
        android:textColor="@android:color/white"
        android:textSize="16sp"
        android:textStyle="bold" />

</FrameLayout>