1<?xml version="1.0" encoding="utf-8"?> 2<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" 3 android:layout_width="512dp" 4 android:layout_height="64dp"> 5 6 <SeekBar 7 android:id="@+id/seek_bar" 8 android:layout_gravity="center" 9 android:progress="50" 10 android:layout_width="match_parent" 11 android:layout_height="wrap_content" /> 12</FrameLayout>