You just simply add the one more item into menu and inflate that menu into your activity ....
like below you will add your button and access that button into your activity...
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android" >
<item
android:id="@+id/refresh"
android:icon="@android:drawable/stat_notify_sync"
showAsAction="ifRoom"/>
<item
android:id="@+id/action_bar_button_cancel"
android:focusableInTouchMode="true"
android:icon="@android:drawable/ic_menu_close_clear_cancel"
showAsAction="ifRoom"/>
</menu>
Inflating the menu like below.....
@Override
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.main, menu);
return super.onCreateOptionsMenu(menu);
}
Accessing method in action bar item is....
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.refresh:
//logic
return true;
case R.id.action_bar_button_cancel:
//logic
return true;
default:
return super.onOptionsItemSelected(item);
}
}
that's if you have any doubt comment