How to title/name each fragment separately to appear on PagerTitleStrip?

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

<android.support.v4.view.ViewPager
    android:id="@+id/pager"
    android:layout_width="match_parent"
    android:layout_height="0px"
    android:layout_weight="1">

    <android.support.v4.view.PagerTitleStrip
        android:id="@+id/pager_title_strip"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="top"
        android:background="#33b5e5"
        android:textColor="#fff"
        android:paddingTop="4dp"
        android:paddingBottom="4dp"/>
</android.support.v4.view.ViewPager>

android {
    compileSdkVersion 22
    buildToolsVersion '23.0.1'

    defaultConfig {
        ...
        targetSdkVersion 22
        ...
    }

    ...
dependencies {
    ...
    compile 'com.android.support:support-v4:22.2.1'
    ...
}