In android you can control the view in any away.
A way is with inflater

// Inflate the popup_layout.xml
            LinearLayout viewGroup = (LinearLayout) context
                            .findViewById(R.id.popupLinearLayout);
            LayoutInflater layoutInflater = (LayoutInflater) context
                            .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            View layout = layoutInflater.inflate(R.layout.activity_popup, viewGroup);

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First step is animation. One for enter and other for exit.

res/anim/enter.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/decelerate_interpolator" >

    <scale
        android:duration="1000"
        android:pivotX="50%"
        android:pivotY="50%"
        android:toXScale="1.0"
        android:toYScale="1.0" />

    <alpha
        android:duration="2000"
        android:fromAlpha="0.0"
        android:startOffset="500"
        android:toAlpha="1.0" />
</set>

res/anim/exit.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >

    <alpha
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:duration="1000"
        android:fillAfter="true"
        android:fromAlpha="1.0"
        android:toAlpha="0" />

</set>

Second step: These animations are item in PopupWindowAnimation style.

res/values/styles.xml

<resources>

    <style name="AppBaseTheme" parent="android:Theme.Light"></style>

    <!-- Application theme. -->
    <style name="AppTheme" parent="AppBaseTheme"></style>

    <style name="PopupWindowAnimation" parent="android:Animation">
        <item name="android:windowEnterAnimation">@anim/enter</item>
        <item name="android:windowExitAnimation">@anim/exit</item>
    </style>

</resources>

you create the layout with button which show the popup.

res/layout/activity_the_developer_world_is_yours.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center"
    android:orientation="vertical" >

    <Button
        android:id="@+id/open"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Show popup" />

</LinearLayout>

Now you create the layout of popup.

res/layout/popup_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/popupLinearLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/colorPopUp"
    android:gravity="center"
    android:orientation="vertical" >

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@color/colorPopUpMarcoWindow"
        android:gravity="center"
        android:orientation="vertical" >

        <Button
            android:id="@+id/close"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="right"
            android:layout_marginRight="5dp"
            android:background="@color/colorPopUpMarcoWindow"
            android:text="@string/closebutton" />

        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginBottom="5dp"
            android:layout_marginLeft="5dp"
            android:layout_marginRight="5dp"
            android:background="@color/colorPopUpWindow"
            android:gravity="center"
            android:orientation="vertical" >

            <TextView
                android:id="@+id/textView1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Popup"
                android:textColor="@color/colorPopUpMarcoWindow" />

            <ImageButton
                android:id="@+id/imageButton1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@drawable/octopus_cat" />

            <TextView
                android:id="@+id/textView2"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="5dp"
                android:text="This is a simple popup"
                android:textColor="@color/colorPopUpMarcoWindow" />
        </LinearLayout>
    </LinearLayout>

</LinearLayout>

res/values/strings.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <string name="app_name">PopUpAndroid</string>
    <string name="title_activity_the_developer_world_is_yours">TheDeveloperWorldIsYours</string>
    <string name="action_settings">Settings</string>
    <string name="closebutton">Close [x]</string>

    <color name="colorPopUp">#BB000000</color>
    <color name="colorPopUpWindow">#000000</color>
    <color name="colorPopUpMarcoWindow">#FFFFFF</color>

</resources>

In conclusion, you create the main class. In this class you create a inflater for show popup.

src/TheDeveloperWorldIsYoursActivity.java

package com.thedeveloperworldisyours.popup;

import android.app.Activity;
import android.content.Context;
import android.graphics.Point;
import android.graphics.Rect;
import android.graphics.drawable.BitmapDrawable;
import android.os.Bundle;
import android.view.Display;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.PopupWindow;

public class TheDeveloperWorldIsYours extends Activity {
	private Point p;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_the_developer_world_is_yours);
        Button popUpButton = (Button) findViewById(R.id.open);
        popUpButton.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View arg0) {
				// TODO Auto-generated method stub
				if (p !=null)
				showPopup(TheDeveloperWorldIsYours.this, p);
			}
		});

    }
    @Override
    public void onWindowFocusChanged(boolean hasFocus) {
            int[] location = new int[2];
            Button button = (Button) findViewById(R.id.open);

            button.getLocationOnScreen(location);
            // Initialize the Point with x, and y positions
            p = new Point();
            p.x = location[0];
            p.y = location[1];

    }
 // The method that displays the popup.

    private void showPopup(final Activity context, Point p) {

            Rect rectgle= new Rect();
            Window window= getWindow();
            window.getDecorView().getWindowVisibleDisplayFrame(rectgle);
            int StatusBarHeight= rectgle.top;
            int contentViewTop=
                window.findViewById(Window.ID_ANDROID_CONTENT).getTop();
            int TitleBarHeight= contentViewTop - StatusBarHeight;
            Display display = ((WindowManager) getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
            int popupWidth = display.getWidth();
            int popupHeight = (display.getHeight()-StatusBarHeight);

            // Inflate the popup_layout.xml
            LinearLayout viewGroup = (LinearLayout) context
                            .findViewById(R.id.popupLinearLayout);
            LayoutInflater layoutInflater = (LayoutInflater) context
                            .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            View layout = layoutInflater.inflate(R.layout.activity_popup, viewGroup);

            // Creating the PopupWindow
            final PopupWindow popup = new PopupWindow(context);
            popup.setContentView(layout);
            popup.setWidth(popupWidth);
            popup.setHeight(popupHeight);
            popup.setFocusable(true);
            popup.setAnimationStyle(R.style.PopupWindowAnimation);

            // Some offset to align the popup a bit to the right, and a bit down,
            // relative to button's position.

            int OFFSET_X = 0;
            int OFFSET_Y = 0;
            // Clear the default translucent background
            popup.setBackgroundDrawable(new BitmapDrawable());
            // Displaying the popup at the specified location, + offsets.
            popup.showAtLocation(layout, Gravity.NO_GRAVITY, p.x + OFFSET_X, p.y
                            + OFFSET_Y);

            // Getting a reference to Close button, and close the popup when
            // clicked.
            Button close = (Button) layout.findViewById(R.id.close);
            close.setOnClickListener(new OnClickListener() {
                    @Override
                    public void onClick(View v) {
                            popup.dismiss();
                    }
            });

    }

}

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