如何使列表视图中的项目可点击？

Question

我一直在尝试寻找解决方案，但收效甚微。 我必须显示一个包含项目列表的弹出窗口。 我能够显示该窗口，但在单击 列表视图 中的项目时未调用 onitemclicklistener。对此问题的任何帮助将不胜感激。

谢谢

编辑1：

public class PopUpWindowActivity extends Activity {

    /** Called when the activity is first created. */
    String[] countries = new String[] {
        "India", "USA", "Canada"
    };

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        LinearLayout ll = new LinearLayout(this);
        ListView lv = new ListView(this);
        lv.setAdapter(new ArrayAdapter < String > (this, android.R.layout.simple_list_item_1, countries));
        lv.setOnItemClickListener(new OnItemClickListener() {

                public void onItemClick(AdapterView <? > arg0, View arg1, int arg2,
                    long arg3) {
                    Log.v("clicked", (String)((TextView) arg1).getText());
                }

            });
        ll.addView(lv);
        setContentView(ll);
    }
}

在上面的代码中，我尝试创建一个布局，在其中添加了一个列表视图。这使得列表视图不再可点击。我必须这样做是因为，我正在尝试实现一个弹出窗口，其中应该有多个项目以及一个列表视图。

Answer 1

列表和列表中的项目是否设置为可点击？以编程方式...

ListView myList = (ListView) findViewById(R.id.list_view_id);
myList.setClickable(true);

或者在 XML 中...

   <ListView xmlns:android="http://schemas.android.com/apk/res/android"
       android:clickable="true">
   ...
   </ListView>

我假设你做到了，但有时我们甚至会错过明显的 :)

编辑：

来自Android Tutorial，这里是如何以编程方式设置 onItemClickListener。

 ListView lv = getListView();
 lv.setOnItemClickListener(new OnItemClickListener() {

   public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
       // When clicked perform some action...
   }
 });

编辑 2：

这是我的 XML

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <ListView xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:id="@+id/list" />

</LinearLayout>

这是我的代码

 public class HelloAndroidActivity extends Activity {

     /** Called when the activity is first created. */
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.main);
         String[] countries = getResources().getStringArray(R.array.countries_array);

         ListView lv = (ListView) findViewById(R.id.list);
         lv.setAdapter(new ArrayAdapter < String > (this, R.layout.list_item, countries));
         lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
                 public void onItemClick(AdapterView <? > arg0, View view, int position, long id) {
                     // When clicked, show a toast with the TextView text
                     Toast.makeText(getApplicationContext(), ((TextView) view).getText(),
                         Toast.LENGTH_SHORT).show();

                 }

             });
     }
 }

Answer 2

ListView myList;
myList = (ListView)findViewById(list_vew_id_in_xml)
myList.setOnItemClickListener(new OnItemClickListener()
{
@Override
public void onItemClick(AdapterView<?> parent, View  view, int position, long id) 
        {
      //Toast.makeText(BritishCouncilActivity.this, "" + position, 2).show();
         }
 });

Answer 3

编辑的答案

请应用此示例，这对您有用我已经测试了此代码

//ListviewActivity.java

 package com.anl.lk;

 public class ListviewActivity extends ListActivity { 

     static final String[] COUNTRIES = new String[] {

         "Afghanistan", "Albania", "Algeria", "American Samoa",
             "Andorra", "Angola", "Anguilla", "Antarctica",
             "Antigua and Barbuda", "Argentina", "Armenia", "Aruba",
             "Australia", "Austria", "Azerbaijan", "Bahrain",
             "Bangladesh", "Barbados", "Belarus", "Belgium", "Belize",
             "Benin", "Bermuda", "Bhutan", "Bolivia",
             "Bosnia and Herzegovina", "Botswana", "Bouvet Island",
             "Brazil", "British Indian Ocean Territory"
     };

     /** Called when the activity is first created. */
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setListAdapter(new ArrayAdapter < String > (this,
                 android.R.layout.simple_list_item_1, COUNTRIES));
         getListView().setTextFilterEnabled(true);
     }

     @Override
     protected void onListItemClick(ListView l, View v, int position, long id) {
         // TODO Auto-generated method stub
         super.onListItemClick(l, v, position, id);

         new AlertDialog.Builder(this)
             .setTitle("Hello")
             .setMessage("from " + getListView().getItemAtPosition(position))
             .setPositiveButton("OK",
             new DialogInterface.OnClickListener() {
                 public void onClick(DialogInterface dialog, int which) {}
             })
             .show();

         Toast.makeText(ListviewActivity.this,
             "ListView: " + l.toString() + "\n" +
             "View: " + v.toString() + "\n" +
             "position: " + String.valueOf(position) + "\n" +
             "id: " + String.valueOf(id),
             Toast.LENGTH_LONG).show();
     }

 }

//首页

package com.anl.lk;

public class FirstPage extends Activity {

    @override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        Button b = (Button) findViewById(R.id.button1);
        b.setOnClickListener(new OnClickListener() {

                public void onClick(View v) {
                    // TODO Auto-generated method stub
                    Intent sam = new Intent(FirstPage.this, ListviewActivity.class);
                    startActivity(sam);

                }
            });
    }
}

//清单文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.anl.lk"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk android:minSdkVersion="8" />

<application
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name" >
    <activity
        android:label="@string/app_name"
        android:name=".FirstPage" >
        <intent-filter >
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity android:name=".ListviewActivity"    android:theme="@android:style/Theme.Dialog"></activity>
</application>

请使用此代码，它有您的解决方案

Answer 4

针对任何列表视图项插入此属性

android:onClick="buttonClicked"

然后在你的代码中

public void buttonClicked(View view)
{
    //Do what you want to do..
}