使用fragment，Pad手机共用一套代码

项目代码结构：

1：MainActivity.java

package com.example.fgtest;

import android.app.Activity;
import android.os.Bundle;

public class MainActivity extends Activity {

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

    }

}

layout/activity_main.xml

<?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" >

    <fragment
        android:id="@+id/fgNoticeTitle"
        android:name="com.wzh.fragment.NoticeTitleFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>
</LinearLayout>

layout-sw600dp/activity_main.xml

<?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="horizontal" >

    <fragment
        android:id="@+id/fgNoticeTitle"
        android:name="com.wzh.fragment.NoticeTitleFragment"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="1"/>

    <FrameLayout
        android:id="@+id/flNoticeContent"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="3">
        <fragment
            android:id="@+id/fgNoticeContent"
            android:name="com.wzh.fragment.NoticeContentFragment"
            android:layout_width="match_parent"
            android:layout_height="match_parent"/>
    </FrameLayout>
</LinearLayout>

2：实体对象Notice.java

package com.wzh.bean;

public class Notice {
    private String title;
    private String content;

    public String getTitle() {
        return title;
    }
    public void setTitle(String title) {
        this.title = title;
    }
    public String getContent() {
        return content;
    }
    public void setContent(String content) {
        this.content = content;
    }

}

3：NoticeAdapter.java

package com.wzh.adapter;

import java.util.List;

import com.example.fgtest.R;
import com.wzh.bean.Notice;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;

public class NoticeAdapter extends ArrayAdapter<Notice>{
    int resourceId;

    public NoticeAdapter(Context context, int resourceId, List<Notice> list){
        super(context, resourceId, list);
        this.resourceId = resourceId;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        Notice notice = getItem(position);
        ViewHolder viewHolder;

        if(convertView==null){
            convertView = LayoutInflater.from(getContext()).inflate(this.resourceId, null);

            viewHolder = new ViewHolder();

            viewHolder.tvNoticeTitle = (TextView)convertView.findViewById(R.id.tvNoticeTitle);

            convertView.setTag(viewHolder);
        }else{
            viewHolder = (ViewHolder)convertView.getTag();
        }

　　　　 viewHolder.tvNoticeTitle.setText(notice.getTitle());

        return convertView;
    }

    class ViewHolder{
        TextView tvNoticeTitle;
    }
}

fragment_notice_content.xml

<?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"
    android:layout_margin="8dp">

    <TextView
        android:id="@+id/tvNoticeTitle"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:textSize="18sp"/>

    <TextView
        android:id="@+id/tvNoticeContent"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"/>

</LinearLayout>

4：NoticeContentActivity.java

package com.example.fgtest;

import com.wzh.fragment.NoticeContentFragment;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;

public class NoticeContentActivity extends Activity{

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_notice_content);

        String title = getIntent().getStringExtra("title");
        String content = getIntent().getStringExtra("content");

        NoticeContentFragment noticeContentFragment = (NoticeContentFragment)
                getFragmentManager().findFragmentById(R.id.fgNoticeContent);
        noticeContentFragment.refreshNoticeContent(title, content);

    }

    public static void openActivity(Context context, String title, String content){
        Intent intent = new Intent(context, NoticeContentActivity.class);
        intent.putExtra("title", title);
        intent.putExtra("content", content);
        context.startActivity(intent);
    }
}

activity_notice_content.xml

<?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" >

    <fragment
        android:id="@+id/fgNoticeContent"
        android:name="com.wzh.fragment.NoticeContentFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>
</LinearLayout>

5：NoticeContentFragment.java

package com.wzh.fragment;

import com.example.fgtest.R;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

public class NoticeContentFragment extends Fragment{
    View view;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        view = inflater.inflate(R.layout.fragment_notice_content, container, false);

        return view;
    }

    public  void refreshNoticeContent(String title,String content){
        TextView tvNoticeTitle = (TextView)view.findViewById(R.id.tvNoticeTitle);
        TextView tvNoticeContent = (TextView)view.findViewById(R.id.tvNoticeContent);

        tvNoticeTitle.setText(title);
        tvNoticeContent.setText(content);
    }
}

fragment_notice_content.xml

<?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"
    android:layout_margin="8dp">

    <TextView
        android:id="@+id/tvNoticeTitle"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:textSize="18sp"/>

    <TextView
        android:id="@+id/tvNoticeContent"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"/>

</LinearLayout>

6：NoticeTitleFragment.java

package com.wzh.fragment;

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

import android.app.Activity;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;

import com.example.fgtest.NoticeContentActivity;
import com.example.fgtest.R;
import com.wzh.adapter.NoticeAdapter;
import com.wzh.bean.Notice;

public class NoticeTitleFragment extends Fragment{

    NoticeAdapter noticeAdapter;
    ListView lvNoticeTitle;
    List<Notice> noticeList;
    boolean isTwoPanel = false;
    int curClickPosition = -1;
    NoticeContentFragment noitceContentFragment;

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
        getNoticeTestData();
        noticeAdapter = new NoticeAdapter(activity,R.layout.list_notice_title_item,noticeList);
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {

        View view = inflater.inflate(R.layout.fragment_notice_title, container, false);

        lvNoticeTitle = (ListView)view.findViewById(R.id.lvNoticeTitle);
        lvNoticeTitle.setAdapter(noticeAdapter);
        lvNoticeTitle.setOnItemClickListener(itemClickListener());

        return view;
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);

        if(getActivity().findViewById(R.id.flNoticeContent)!=null){
            isTwoPanel = true;
            noitceContentFragment = (NoticeContentFragment)
                    getActivity().getFragmentManager().findFragmentById(R.id.fgNoticeContent);
            if(noticeList.size()>0){
                Notice notice = noticeList.get(0);
                noitceContentFragment.refreshNoticeContent(notice.getTitle(), notice.getContent());
            }
        }else{
            isTwoPanel = false;
        }
    }

    OnItemClickListener itemClickListener(){
        return new OnItemClickListener(){
            @Override
            public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                    long arg3) {
                Notice notice = noticeList.get(arg2);
                String title = notice.getTitle();
                String content = notice.getContent();
                if(isTwoPanel){
                    if(curClickPosition!=arg2){
                        noitceContentFragment.refreshNoticeContent(title, content);
                    }
                    curClickPosition = arg2;
                }else{
                    NoticeContentActivity.openActivity(getActivity(), title, content);
                }
            }

        };
    }

    void getNoticeTestData(){
        noticeList = new ArrayList<Notice>();
        Notice notice = new Notice();
        notice.setTitle("测试标题1");
        notice.setContent("测试标题内容1");
        noticeList.add(notice);
        notice = new Notice();
        notice.setTitle("测试标题2");
        notice.setContent("测试标题内容2");
        noticeList.add(notice);
        notice = new Notice();
        notice.setTitle("测试标题3");
        notice.setContent("测试标题内容3");
        noticeList.add(notice);
    }
}

fragment_notice_title.xml

<?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" >

    <ListView
        android:id="@+id/lvNoticeTitle"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>
</LinearLayout>