【安卓笔记】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 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。

 

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。

 

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：

 

 

 

 

评论

2 楼 crazysumer 2014-04-26  

atgoingguoat 写道

R.layout.item_list

没放出来。

应该就是一个TextView而已

1 楼 atgoingguoat 2014-04-21  

R.layout.item_list

没放出来。