Android 使用下拉列表创建操作栏无法按预期工作

我正在创建一个带有多个下拉列表菜单的操作栏，但问题是它不工作，并且出现错误。有人能帮我吗

我从android官方网站上获得了教程，但我不明白它是如何与fragment和其他工具配合使用的

MainActivity.java main.xml

array.xml

水星
维纳斯
土

spiner\u下拉列表\u item.xml

您遇到了什么错误？您可以发布日志吗？错误在mainActivity.java代码中，它说：对于类型new ActionBar.OnNavigationListener（）{}，方法openFragmentTransaction（）未定义。。。。。。它在方法replace下面加下划线，错误是：FragmentTraPromission类型中的方法replace（int，Fragment，String）不适用于参数（int MainActivity.ListContentFragment，String）

package com.devleb.droplitactionbar;

import java.util.ArrayList;
import java.util.List;

import android.os.Bundle;
import android.app.ActionBar;
import android.app.ActionBar.OnNavigationListener;
import android.app.Activity;
import android.app.FragmentTransaction;
import android.drm.DrmStore.Action;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.SpinnerAdapter;
import android.widget.TextView;


public class MainActivity extends Activity {

    public Spinner spiner;
    ActionBar actionbar;
    SpinnerAdapter mSpinnerAdapter; 
    OnNavigationListener mOnNavigationListener;



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


         mSpinnerAdapter = ArrayAdapter.createFromResource(this, R.array.action_list,
                  android.R.layout.simple_spinner_dropdown_item);
    }


    public void addSpinnerToActionbar( Spinner spiner)
    {
       actionbar.setListNavigationCallbacks(mSpinnerAdapter,   mOnNavigationListener);

       mOnNavigationListener = new OnNavigationListener() {
           // Get the same strings provided for the drop-down's ArrayAdapter
           String[] strings = getResources().getStringArray(R.array.action_list);

           @Override
           public boolean onNavigationItemSelected(int position, long itemId) {
             // Create new fragment from our own Fragment class
             ListContentFragment newFragment = new ListContentFragment();
             FragmentTransaction ft = openFragmentTransaction();
             // Replace whatever is in the fragment container with this fragment
             //  and give the fragment a tag name equal to the string at the position selected
             ft.replace(R.id.fragment, newFragment, strings[position]);
             // Apply changes
             ft.commit();
             return true;
           }
         };

    }
    public void addItemToSpinner()
    {
        spiner = (Spinner)findViewById(R.id.spinner);
        List list = new ArrayList();
        list.add("item1");
        list.add("item2");
        list.add("item3");
        /*
        ArrayAdapter dataAdapter = new ArrayAdapter(this, R.layout.spiner_drop_down_item, list);
        dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spiner.setAdapter(dataAdapter);
    */
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    public class ListContentFragment extends Fragment {
        private String mText;


        public void onAttach(Activity activity) {
          // This is the first callback received; here we can set the text for
          // the fragment as defined by the tag specified during the fragment transaction
          super.onAttach(activity);
          mText = getTag();
        }


        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                Bundle savedInstanceState) {
            // This is called to define the layout for the fragment;
            // we just create a TextView and set its text to be the fragment tag
            TextView text = new TextView(getActivity());
            text.setText(mText);
            return text;
        }
    }

}

<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world" />



    <fragment
        android:id="@+id/fragment"
        android:name="android.support.v4.app.ListFragment"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView1"
        android:layout_below="@+id/textView1"
        android:layout_marginTop="68dp" />

</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <string-array name="action_list">
        <item>Mercury</item>
        <item>Venus</item>
        <item>Earth</item>
    </string-array>

</resources>

 <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical" >

        <Spinner
            android:id="@+id/spinner"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:entries="@array/action_list" />

    </LinearLayout>