How to always show overflow menu (ActionBar) even if phone has hardware menu button?

Question

Following mentioned are codes implemented. Please suggest me how to create the "overflow menu" option in action bar even if a phone have the hardware menu button?

This is my current code:

MainActivity.java

public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.activity_main_actions, menu);
    return super.onCreateOptionsMenu(menu);
}

activity_main_actions.xml

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

<!-- Search  -->
<item android:id="@+id/action_search"
      android:icon="@drawable/ic_action_search"
      android:title="@string/action_search"
      android:showAsAction="ifRoom"/>

<!-- Email -->
<item android:id="@+id/action_email"
      android:icon="@drawable/ic_action_email"
      android:title="@string/action_email"
      android:showAsAction="never"/>

<!-- Help -->
<item android:id="@+id/action_help"
      android:icon="@drawable/ic_action_help"
      android:title="@string/action_help"
      android:showAsAction="never"/>

<!-- attach -->
<item android:id="@+id/action_attach"
      android:icon="@drawable/ic_action_attachment"
      android:title="@string/action_attach"
      android:showAsAction="never" />

Answer 1

Finally i got the answer after all with the following code, it was coded after the method onCreateOptionMenu()...

import android.view.ViewConfiguration;

        private void getOverflowMenu(){

         try {
            ViewConfiguration config = ViewConfiguration.get(this);
            Field menuKeyField = ViewConfiguration.class.getDeclaredField("sHasPermanentMenuKey");
            if(menuKeyField != null) {
                menuKeyField.setAccessible(true);
                menuKeyField.setBoolean(config, false);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

Answer 2

Try this:

Since you set the showAsAction attribute to never, then these menu items will never show as action views. Try this:

<item android:id="@+id/action_search"
      android:icon="@drawable/ic_action_search"
      android:title="@string/action_search"
      android:showAsAction="ifRoom|withText"/>

<!-- Email -->
<item android:id="@+id/action_email"
      android:icon="@drawable/ic_action_email"
      android:title="@string/action_email"
      android:showAsAction="ifRoom|withText"/>

<!-- Help -->
<item android:id="@+id/action_help"
      android:icon="@drawable/ic_action_help"
      android:title="@string/action_help"
      android:showAsAction="ifRoom|withText"/>

<!-- attach -->
<item android:id="@+id/action_attach"
      android:icon="@drawable/ic_action_attachment"
      android:title="@string/action_attach"
      android:showAsAction="ifRoom|withText"/>