Ich habe Navigationsfach mit Fragment. Ich möchte Fragment in der Navigationsleiste öffnen. Es kommt kein Fehler im Code, aber Listview Item Not Display in Fragment. Nur leere Seite anzeigen. Folgender Code. Plzz Help Me.

fragment_blank_fragment_trip2.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.example.administrator.vtsapplication.BlankFragmentTrip2">

<ListView
android:id="@+id/mobile_list"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>

</LinearLayout>

Activity_listview.xml

<?xml version="1.0" encoding="utf-8"?> 
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/label"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="10dip"
android:textSize="16dip"
android:textStyle="bold" >

BlankFragmenttrip2.java

package com.example.administrator.vtsapplication;


import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class BlankFragmentTrip2 extends Fragment {
public BlankFragmentTrip2() {
    // Required empty public constructor
}
ViewGroup vg;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    String[] mobileArray = {"Android", "IPhone", "WindowsMobile", "Blackberry", "WebOS", "Ubuntu", "Windows7", "Max OS X"};
    vg = (ViewGroup) inflater.inflate(R.layout.fragment_blank_fragment_trip2, container, false);
    ArrayAdapter adapter = new ArrayAdapter<String>(getActivity(), R.layout.activity_listview, mobileArray);

    ListView listView = (ListView) vg.findViewById(R.id.mobile_list);
    listView.setAdapter(adapter);
    return inflater.inflate(R.layout.fragment_blank_fragment_trip2, container, false);
}

}