You can implement the Bottom Bar in Activity
and should have Fragments
for other layout in your activity.
Here is the great tutorial to implement Music Player in Android from scratch : Create a Music Player on Android .
Another cool feature : Android Sliding Up Panel imitates the same feature as Google Play Music with sliding up Current Playing Music.
You can change the view by setVisibility(View.GONE/View.VISIBLE/View.INVISIBLE) along with FrameLayout. Another way, learn about the fragments. Hope you'll find this helpful.
You can do it easily like this:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="New Button"
android:id="@+id/button"
android:layout_alignParentBottom="true" />
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="@+id/button">
</ListView>
</RelativeLayout>
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