Handler handler=new Handler();
handler.postDelayed(new Runnable(){public void run(){Intent intent=new Intent(getApplicationContext(),Schedule_Popup_Activity.class); startActivity(intent);}}, delay);

<android name="Schedule_Popup_Activity
android:theme="@android:style/Theme.Dialog">

<style name="MyFloatingWindow">
<item name="android:windowBackground">@android:color/transparent</item>
<item name="android:background">@android:color/transparent</item>
<item name="android:windowIsFloating">true</item>
<item name="android:windowNoTitle">true</item>

<item name="android:gravity">bottom</item>