Use PopupWindow

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <Button
        android:id="@+id/button"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Show PopupWindow"
        android:onClick="onShowWindowClick" />

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom"
        android:text="Show PopupWindow"
        android:onClick="onShowWindowClick" />
</FrameLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="vertical">
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:text="This is a PopupWindow" />
    <EditText
        android:layout_width="250dp"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal" />
    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:text="Close" />
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android" >
    <group
        android:id="@+id/group"
        android:checkableBehavior="all">
        <item
            android:id="@+id/menu_option_first"
            android:title="First Option"/>
        <item
            android:id="@+id/menu_option_second"
            android:title="Second Option"/>
    </group>
    <item
        android:id="@+id/menu_save"
        android:title="Save"/>
</menu>

package com.java2s.myapplication4.app;
//  w  w w  .  j ava  2 s  .  c om
import android.app.Activity;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.view.WindowManager;
import android.widget.PopupWindow;

public class MainActivity extends Activity implements View.OnTouchListener {

    PopupWindow mOverlay;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        View popupContent = getLayoutInflater().inflate(R.layout.popup, null);

        mOverlay = new PopupWindow();
        mOverlay.setWindowLayoutMode(WindowManager.LayoutParams.WRAP_CONTENT,WindowManager.LayoutParams.WRAP_CONTENT);
        mOverlay.setWidth(350);
        mOverlay.setHeight(250);
        mOverlay.setContentView(popupContent);
        mOverlay.setBackgroundDrawable(getResources().getDrawable(R.drawable.ic_launcher));

    //    mOverlay.setAnimationStyle(R.style.PopupAnimation);
        mOverlay.setTouchInterceptor(this);
        //mOverlay.setOutsideTouchable(true);
    }

    @Override
    protected void onPause() {
        super.onPause();
        mOverlay.dismiss();
    }

    @Override
    public boolean onTouch(View v, MotionEvent event) {
        return false;
    }

    public void onShowWindowClick(View v) {
        if (mOverlay.isShowing()) {
            mOverlay.dismiss();
        } else {
            mOverlay.showAsDropDown(v);
        }
    }
}