java - Android:在 fragment 中填充 ListView

Question

我有一个填充 ListView 的 Activity ，它正在运行。因为我使用选项卡 ViewPager，所以我必须使用 fragment 而不是 Activity 。那么有人能告诉我我需要更改什么才能从我的 Activity 中制作 fragment 吗(FragmentActivity 不能在选项卡中使用)。

package com.basnijkamp.safanagendatest;

import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

import android.app.Activity;
import android.os.Bundle;
import android.widget.ListView;
import android.widget.SimpleAdapter;

public class ListSample extends Activity {  

    public final static String ITEM_TITLE = "title";  
    public final static String ITEM_CAPTION = "caption";  

    public Map<String,?> createItem(String title, String caption) {  
        Map<String,String> item = new HashMap<String,String>();  
        item.put(ITEM_TITLE, title);  
        item.put(ITEM_CAPTION, caption);  
        return item;  
    }  

    @Override  
    public void onCreate(Bundle icicle) {  
        super.onCreate(icicle);  

        List<Map<String,?>> september2012 = new LinkedList<Map<String,?>>();  
        september2012.add(createItem("Electra Mining Africa 2012", "Johannesberg South Africa"));  
        september2012.add(createItem("MSV", "Brno Czech Republic"));  
        september2012.add(createItem("IMTS", "Chicago USA"));
        september2012.add(createItem("AMB", "Stuttgart Germany"));  
        september2012.add(createItem("Den Teknise Messe", "Lillestrom Norway"));  
        september2012.add(createItem("ITM", "Plovdiv Bulgaria"));  

        List<Map<String,?>> oktober2012 = new LinkedList<Map<String,?>>();  
        oktober2012.add(createItem("BIMU", "Milan Italy"));  
        oktober2012.add(createItem("Matek", "Istanbul"));
        oktober2012.add(createItem("TIB", "Bucharest Romania"));
        oktober2012.add(createItem("Vienna Tec", "Vienna Austria"));
        oktober2012.add(createItem("Euro Blech 2012", "Hanover Germany"));
        oktober2012.add(createItem("Technica Massan", "Stockholm Sweden"));

        List<Map<String,?>> november2012 = new LinkedList<Map<String,?>>();  
        november2012.add(createItem("JIMTOF", "Tokyo Japan"));
        november2012.add(createItem("Metavak", "Gorinchem Netherlands"));
        november2012.add(createItem("FABTECH", "Las Vegas USA"));
        november2012.add(createItem("Prodex", "Basel Switzerland"));
        november2012.add(createItem("EMAF 2012", "Porto Portugal"));
        november2012.add(createItem("Manufact Indonesia", "Jakarta Indonesia"));

        // create our list and custom adapter  
        SeparatedListAdapter adapter = new SeparatedListAdapter(this);  
        adapter.addSection("September 2012", new SimpleAdapter(this, september2012, R.layout.list_complex,   
            new String[] { ITEM_TITLE, ITEM_CAPTION }, new int[] { R.id.list_complex_title, R.id.list_complex_caption }));
        adapter.addSection("Oktober 2012", new SimpleAdapter(this, oktober2012, R.layout.list_complex,   
            new String[] { ITEM_TITLE, ITEM_CAPTION }, new int[] { R.id.list_complex_title, R.id.list_complex_caption }));
        adapter.addSection("November 2012", new SimpleAdapter(this, november2012, R.layout.list_complex,   
                new String[] { ITEM_TITLE, ITEM_CAPTION }, new int[] { R.id.list_complex_title, R.id.list_complex_caption }));

        ListView list = new ListView(this);  
        list.setAdapter(adapter);  
        this.setContentView(list);  

    }  

}  

提前致谢

Answer 1

我建议您扩展 ListFragment - http://developer.android.com/reference/android/app/ListFragment.html .

从这里开始:

        ListView list = new ListView(this); 
        list.setAdapter(adapter); 
        this.setContentView(list); 

你应该这样做:

        setListAdapter (adapter); 

来自

@Override 
public void onCreate(Bundle icicle) { 
        super.onCreate(icicle);

->

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

从 ListSample extends Activity -> ListSample extends ListFragment

如果需要更多详细信息，请告诉我，祝你好运