OnItemClickListener没有触发

Question

我从this网站上了解到有关自定义列表视图的信息。但是在本教程中，onItemClickListener不会触发。请为它提出一些解决方案。我是新手到android。

的代码是这样

LazyAdapter.java

import java.util.ArrayList; 
import java.util.HashMap; 

import android.app.Activity; 
import android.content.Context; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.BaseAdapter; 
import android.widget.ImageView; 
import android.widget.TextView; 

public class LazyAdapter extends BaseAdapter { 

    private Activity activity; 
    private ArrayList<HashMap<String, String>> data; 
    private static LayoutInflater inflater=null; 
    public ImageLoader imageLoader; 

    public LazyAdapter(Activity a, ArrayList<HashMap<String, String>> d) { 
     activity = a; 
     data=d; 
     inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
     imageLoader=new ImageLoader(activity.getApplicationContext()); 
    } 

    public int getCount() { 
     return data.size(); 
    } 

    public Object getItem(int position) { 
     return position; 
    } 

    public long getItemId(int position) { 
     return position; 
    } 

    public View getView(int position, View convertView, ViewGroup parent) { 
     View vi=convertView; 
     if(convertView==null) 
      vi = inflater.inflate(R.layout.list_row, null); 

     TextView title = (TextView)vi.findViewById(R.id.title); // title 
     TextView artist = (TextView)vi.findViewById(R.id.artist); // artist name 
     TextView duration = (TextView)vi.findViewById(R.id.duration); // duration 
     ImageView thumb_image=(ImageView)vi.findViewById(R.id.list_image); // thumb image 

     HashMap<String, String> song = new HashMap<String, String>(); 
     song = data.get(position); 

     // Setting all values in listview 
     title.setText(song.get(CustomizedListView.KEY_TITLE)); 
     artist.setText(song.get(CustomizedListView.KEY_ARTIST)); 
     duration.setText(song.get(CustomizedListView.KEY_DURATION)); 
     imageLoader.DisplayImage(song.get(CustomizedListView.KEY_THUMB_URL), thumb_image); 
     return vi; 
    } 
} 

CustomizedListView.java

import java.util.ArrayList; 
import java.util.HashMap; 

import org.w3c.dom.Document; 
import org.w3c.dom.Element; 
import org.w3c.dom.NodeList; 

import android.app.Activity; 
import android.os.Bundle; 
import android.view.View; 
import android.widget.AdapterView; 
import android.widget.AdapterView.OnItemClickListener; 
import android.widget.ListView; 

public class CustomizedListView extends Activity { 
    // All static variables 
    static final String URL = "http://api.androidhive.info/music/music.xml"; 
    // XML node keys 
    static final String KEY_SONG = "song"; // parent node 
    static final String KEY_ID = "id"; 
    static final String KEY_TITLE = "title"; 
    static final String KEY_ARTIST = "artist"; 
    static final String KEY_DURATION = "duration"; 
    static final String KEY_THUMB_URL = "thumb_url"; 

    ListView list; 
    LazyAdapter adapter; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 

     HashMap<String, String> songsList = new HashMap<String, String>(); 

     XMLParser parser = new XMLParser(); 
     String xml = parser.getXmlFromUrl(URL); // getting XML from URL 
     Document doc = parser.getDomElement(xml); // getting DOM element 

     NodeList nl = doc.getElementsByTagName(KEY_SONG); 
     // looping through all song nodes &lt;song&gt; 
     for (int i = 0; i < nl.getLength(); i++) { 
      // creating new HashMap 
      ArrayList<HashMap<String, String>> map = new ArrayList<HashMap<String, String>>(); 
      Element e = (Element) nl.item(i); 
      // adding each child node to HashMap key => value 
      map.put(KEY_ID, parser.getValue(e, KEY_ID)); 
      map.put(KEY_TITLE, parser.getValue(e, KEY_TITLE)); 
      map.put(KEY_ARTIST, parser.getValue(e, KEY_ARTIST)); 
      map.put(KEY_DURATION, parser.getValue(e, KEY_DURATION)); 
      map.put(KEY_THUMB_URL, parser.getValue(e, KEY_THUMB_URL)); 

      // adding HashList to ArrayList 
      songsList.add(map); 
     } 

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

     // Getting adapter by passing xml data ArrayList 
     adapter=new LazyAdapter(this, songsList); 
     list.setAdapter(adapter); 

     // Click event for single list row 
     list.setOnItemClickListener(new OnItemClickListener() { 

      @Override 
      public void onItemClick(AdapterView<?> parent, View view, 
        int position, long id) { 

      } 
     }); 
    } 
} 

Answer 1

尝试在布局android:descendantFocusability="blocksDescendants"添加使用此list.setClickable(true);和list.setEnable(true)和TRU，因为如果有任何可聚焦的，然后第一次点击始终是焦点