Android ListView和Fragment结合使用，类似于某电商的实现，拿来就能用,详细标注适合新手

来源：互联网发布：java swt项目开发案例编辑：程序博客网时间：2024/04/30 07:59

转载请注明出处王亟亟的大牛之路

一个类似于某电商的实现，让菜鸟们理解Activity与Fragment之间的参数是如何交互的。

包结构：
这里写图片描述

运行后的效果
这里写图片描述

分析：
左侧ListView可上下拖动，点击不同的item会影响右侧Fragment的内容。

废话不多说，上代码（详细标注）
MainActivity

public class MainActivity extends FragmentActivity implements        OnItemClickListener {    /*ListView填充用*/    private String[] strs = { "常用分类", "服饰内衣","宠物", "手机", "家用电器", "数码", "电脑办公",            "个护化妆", "图书","鞋靴" };    private ListView listView;    private MyAdapter adapter;    private ContentFragment myFragment;    /*选中的item的位数号码*/    public static int mPosition;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        /*初始化*/        initView();    }    /**     * 初始化view     */    private void initView() {        //匹配控件        listView = (ListView) findViewById(R.id.listview);        //传参        adapter = new MyAdapter(this, strs);        listView.setAdapter(adapter);        //监听事件        listView.setOnItemClickListener(this);        //创建MyFragment对象        myFragment = new ContentFragment();        FragmentTransaction fragmentTransaction = getSupportFragmentManager()                .beginTransaction();        fragmentTransaction.replace(R.id.fragment_container, myFragment);        //通过bundle传值给MyFragment        Bundle bundle = new Bundle();        bundle.putString(ContentFragment.TAG, strs[mPosition]);        myFragment.setArguments(bundle);        fragmentTransaction.commit();    }    @Override    public void onItemClick(AdapterView<?> parent, View view, int position,            long id) {        //拿到当前位置        mPosition = position;        //即使刷新adapter        adapter.notifyDataSetChanged();        for (int i = 0; i < strs.length; i++) {            myFragment = new ContentFragment();            FragmentTransaction fragmentTransaction = getSupportFragmentManager()                    .beginTransaction();            fragmentTransaction.replace(R.id.fragment_container, myFragment);            Bundle bundle = new Bundle();            bundle.putString(ContentFragment.TAG, strs[position]);            myFragment.setArguments(bundle);            fragmentTransaction.commit();        }    }}

ContentFragment

public class ContentFragment extends Fragment {    public static final String TAG = "MyFragment";    private String str;    @Override    public View onCreateView(LayoutInflater inflater, ViewGroup container,            Bundle savedInstanceState) {        // TODO Auto-generated method stub        View view = inflater.inflate(R.layout.myfragment, null);        TextView tv_title = (TextView) view.findViewById(R.id.tv_title);        //得到数据        str = getArguments().getString(TAG);        tv_title.setText(str);        return view;    }}

ListView的适配器（已经做了简单的优化）

public class MyAdapter extends BaseAdapter {    private Context context;    private String[] strings;    public static int mPosition;    public MyAdapter(Context context, String[] strings){        this.context =context;        this.strings = strings;    }    @Override    public int getCount() {        // TODO Auto-generated method stub        return strings.length;    }    @Override    public Object getItem(int position) {        // TODO Auto-generated method stub        return strings[position];    }    @Override    public long getItemId(int position) {        // TODO Auto-generated method stub        return position;    }    @Override    public View getView(int position, View convertView, ViewGroup parent) {         ViewHolder  viewHolder=new ViewHolder();        if(convertView==null){             convertView = LayoutInflater.from(context).inflate(R.layout.listview_item, null);             viewHolder.tv=(TextView) convertView.findViewById(R.id.tv);             mPosition = position;             viewHolder.tv.setText(strings[position]);             if (position == MainActivity.mPosition) {                    convertView.setBackgroundResource(R.drawable.tongcheng_all_bg01);                } else {                    convertView.setBackgroundColor(Color.parseColor("#f4f4f4"));                }             convertView.setTag(viewHolder);          }else{             viewHolder = (ViewHolder) convertView.getTag();        }         viewHolder.tv.setText(strings[position]);         if (position == MainActivity.mPosition) {                convertView.setBackgroundResource(R.drawable.tongcheng_all_bg01);            } else {                convertView.setBackgroundColor(Color.parseColor("#f4f4f4"));            }         return convertView;    }    private static class ViewHolder    {        TextView tv;    }}

主布局文件：

<?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" >    <View        android:layout_width="match_parent"        android:layout_height="1dp"        android:background="#cdcdcd" />    <TextView        android:layout_width="match_parent"        android:layout_height="40dp"        android:background="#ededed"        android:gravity="center"        android:text="全部种类"        android:textColor="#BF3EFF"        android:textSize="17sp" />    <LinearLayout        android:layout_width="match_parent"        android:layout_height="match_parent"        android:background="#fbfbfb"        android:orientation="horizontal" >        <ListView            android:id="@+id/listview"            android:layout_width="0dp"            android:layout_height="match_parent"            android:scrollbars="none"            android:layout_weight="1.0"            android:background="#f4f4f4" />        <FrameLayout            android:id="@+id/fragment_container"            android:layout_width="0dp"            android:layout_height="match_parent"            android:layout_weight="3.0" />    </LinearLayout></LinearLayout>

因为，属于写给新手初步理解这2个东西的。所以没有过多解释，注释已经很细了（自认为），也适合懒鬼拿来就用。

源码地址：http://yunpan.cn/cdkX7pQSCamJM 访问密码 82c9

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