使用ListView的Fragment

API LEVEL 11

1.使用ListFragment可实现包含Listiew的Fragment

2.在Fragment的布局中必须包含id "@android:id/list"(在代码中则是list)的Listview

3.只能使用SimpleAdapter或者SimpleCursorAdapter作为适配器

4.直接使用ListFragment的setListAdapter()来设置适配器【不要给ListView设置】

5.ListView点击事件的监听，重写ListFragment的onListItemClick(ListView l, View v, int position, long id)方法

1)新建ListFragment的布局fragment1.xml

Xml代码


<?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" >

<TextView

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:gravity="center"

android:text="Titles"

/>

<ListView

android:id="@id/android:list"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

></ListView>

</LinearLayout>

2)新建Fragment继承自ListFragment，命名为Fragment1。

Java代码


import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import android.app.Activity;

import android.os.Bundle;

import android.support.v4.app.ListFragment;

import android.util.Log;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.ListView;

import android.widget.SimpleAdapter;

import android.widget.TextView;

import android.widget.Toast;

/**

* @描述 在Fragment中要使用ListView，就要用ListFragment

* */

public class Fragment1 extends ListFragment {

private String TAG = Fragment1.class.getName();

private ListView list ;

private SimpleAdapter adapter;

/**

* @描述 在onCreateView中加载布局

* */

@Override

public View onCreateView(LayoutInflater inflater, ViewGroup container,

Bundle savedInstanceState) {

View view = inflater.inflate(R.layout.fragment1, container,false);

list = (ListView) view.findViewById(android.R.id.list);

Log.i(TAG, "--------onCreateView");

return view;

}

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

b = savedInstanceState;

Log.i(TAG, "--------onCreate");

String[] list = {"Class 1","Class 2","class 3","Class 4","Class 5"};

adapter = new SimpleAdapter(getActivity(), getData(list), R.layout.item_list, new String[]{"title"}, new int[]{R.id.title});

setListAdapter(adapter);

}

@Override

public void onListItemClick(ListView l, View v, int position, long id) {

super.onListItemClick(l, v, position, id);

System.out.println(l.getChildAt(position));

HashMap<String, Object> view= (HashMap<String, Object>) l.getItemAtPosition(position);

System.out.println(view.get("title").toString()+"+++++++++title");

Toast.makeText(getActivity(), TAG+l.getItemIdAtPosition(position), Toast.LENGTH_LONG).show();

System.out.println(v);

System.out.println(position);

}

private List<? extends Map<String, ?>> getData(String[] strs) {

List<Map<String ,Object>> list = new ArrayList<Map<String,Object>>();

for (int i = 0; i < strs.length; i++) {

Map<String, Object> map = new HashMap<String, Object>();

map.put("title", strs[i]);

list.add(map);

}

return list;

}

@Override

public void onActivityCreated(Bundle savedInstanceState) {

super.onActivityCreated(savedInstanceState);

Log.i(TAG, "--------onActivityCreated");

}

@Override

public void onAttach(Activity activity) {

super.onAttach(activity);

Log.i(TAG, "----------onAttach");

}

}

3)新建Activity，继承自FragmentActivity，将Fragment添加到Activity中。命名为FragmentsActivity。

Java代码


public class FragmentsActivity extends FragmentActivity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_fragments);

Display display = getWindowManager().getDefaultDisplay();

Fragment1 f1 = new Fragment1();

FragmentManager manager = getSupportFragmentManager();

manager.beginTransaction().add(R.id.fragments, f1).commit();

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menu; this adds items to the action bar if it is present.

getMenuInflater().inflate(R.menu.fragments, menu);

return true;

}

}

效果图：