使用fragment，Pad手机共用一套代码

2022-12-18 21:58:05

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>

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