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Android Listview

方法一：

xml文件

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <ListView
        android:id="@+id/listView1"
        android:choiceMode="singleChoice"
        android:layout_width="match_parent"
        android:layout_height="318dp"
        android:layout_weight="0.73"
        android:entries="@array/spinner" >
    </ListView>

    <EditText
        android:id="@+id/editText1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:ems="10"
        android:inputType="textMultiLine" >

        <requestFocus />
    </EditText>

</LinearLayout>

java 文件

package com.example.listview;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class MainActivity extends Activity {
ListView mListView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        showListview();
    }

    private void showListview() 
    {
    mListView=(ListView) findViewById(R.id.listView1);
    String[] COUNTRIES = new String[] { "Angola ", "Afghanis", "A,lbania", ",lgeria", ",ndorra", ",nguilla", "Ant,igua ", "Argen,tin", "Armenia,", "Ascens,o", "Australi", "Austria" ,"Azerbaij" ,"Bahamas", "B,ahrain", ",anglade", ",arbados", "Bel,arus", "Belgi,um", "Beli,e ", "Beni, ", "Bermuda ,", "Bolivia" , "Botswana" ,"Brazil " ,"Brunei ", "B,ulgaria", "Bur,kina-", "Burma, ", "Burundi", "Cameroon", "Canada " ,"Cayman I" ,"Central ", "C,had ", "Chile, ", "China ", "Colombia" ,"Congo ", ",Cook Is.", "C,osta Ri", "Cu,ba ", "Cyprus, ", "Czech , ", "Denmark" , "Djibouti" ,"Dominica" ,"Ecuador" , "E,gypt ", "EI S,alva", "Est,nia" , "Ethiop,ia", "Fiji ", "Finland" , "France " ,"French G", "G,abon ", "G,mbia ", "Geor,gia", "Germ,any" , "Gha,a ", "Gibralt,a", "Greece ", "Grenada", "Guam ", "Gu,atemal", "G,inea ", "G,yana ", "Hai,ti ", "Hondur,as", "Hongkong,", "Hungary", "Iceland", "India " ,"Indonesi", "I,ran ", "Iraq ", "Ireland", "Israel ", "Italy ", "I,vory Co", ",amaica" , ",apan ", "Jor,dan ", "Kampu,che", "Kazak,sta", "Kenya, ", "Korea, ", "Kuwait ", "Kyrgyzst", "Laos ", "La,tvia ", "L,banon" , "Les,otho" , "Liber,ia" , "Libya ,", "Liechten", "Lithuani" };    
    //ArrayAdapter<String> arrayAdapter=new  ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, COUNTRIES);
    ArrayAdapter<String> arrayAdapter=new  ArrayAdapter<String>(this, android.R.layout.select_dialog_singlechoice, COUNTRIES);
    mListView.setAdapter(arrayAdapter);
    
    
    }

}

======================================

方法二：

 /**
 * @Title listviewDirect.java
 * @package     com.example.listview
 * @since  
 * @version     1.0.0 
 * @author      Vic Lee
 * @date        Aug 24, 2016-11:15:35 AM
 */
package com.example.listview;

import android.app.ListActivity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class listviewDirectActivity extends ListActivity {
ListView mListView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        
        super.onCreate(savedInstanceState);
        //setContentView(R.layout.activity_main);
        showlistviewDirect();
      
    }
    
    private void showlistviewDirect()
    {
        //mListView=getListView();
        String[] COUNTRIES = new String[] { "Angola ", "Afghanis", "A,lbania", ",lgeria", ",ndorra", ",nguilla", "Ant,igua ", "Argen,tin", "Armenia,", "Ascens,o", "Australi", "Austria" ,"Azerbaij" ,"Bahamas", "B,ahrain", ",anglade", ",arbados", "Bel,arus", "Belgi,um", "Beli,e ", "Beni, ", "Bermuda ,", "Bolivia" , "Botswana" ,"Brazil " ,"Brunei ", "B,ulgaria", "Bur,kina-", "Burma, ", "Burundi", "Cameroon", "Canada " ,"Cayman I" ,"Central ", "C,had ", "Chile, ", "China ", "Colombia" ,"Congo ", ",Cook Is.", "C,osta Ri", "Cu,ba ", "Cyprus, ", "Czech , ", "Denmark" , "Djibouti" ,"Dominica" ,"Ecuador" , "E,gypt ", "EI S,alva", "Est,nia" , "Ethiop,ia", "Fiji ", "Finland" , "France " ,"French G", "G,abon ", "G,mbia ", "Geor,gia", "Germ,any" , "Gha,a ", "Gibralt,a", "Greece ", "Grenada", "Guam ", "Gu,atemal", "G,inea ", "G,yana ", "Hai,ti ", "Hondur,as", "Hongkong,", "Hungary", "Iceland", "India " ,"Indonesi", "I,ran ", "Iraq ", "Ireland", "Israel ", "Italy ", "I,vory Co", ",amaica" , ",apan ", "Jor,dan ", "Kampu,che", "Kazak,sta", "Kenya, ", "Korea, ", "Kuwait ", "Kyrgyzst", "Laos ", "La,tvia ", "L,banon" , "Les,otho" , "Liber,ia" , "Libya ,", "Liechten", "Lithuani" };    
        ArrayAdapter<String> arrayAdapter=new  ArrayAdapter<String>(this, android.R.layout.select_dialog_singlechoice, COUNTRIES);
        setListAdapter(arrayAdapter);
    }

    
}

错误：

08-24 11:48:52.402: E/AndroidRuntime(15786): java.lang.RuntimeException: Unable to start activity ComponentInfo

{com.example.listview/com.example.listview.listviewDirectActivity}: java.lang.NullPointerException


解决办法：
因为listview 自动已经生成了id ,所以引用已经生成的id即可 在xml 页面。android:id="@android:id/list"

listview 增加

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <ListView
        android:id="@android:id/list"
        android:layout_width="match_parent"
        android:layout_height="186dp"
        android:layout_weight="0.87" >
    </ListView>

    <EditText
        android:id="@+id/editText1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:ems="10"
        android:inputType="textMultiLine" >

        <requestFocus />
    </EditText>

</LinearLayout>

package com.example.listviw1;

import java.util.ArrayList;
import java.util.List;

import android.os.Bundle;
import android.app.Activity;
import android.app.ListActivity;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.View;
import android.view.View.OnKeyListener;
import android.widget.ArrayAdapter;
import android.widget.EditText;

public class MainActivity extends ListActivity {
EditText mEditText;
ArrayAdapter<String> arrayAdapter;
List<String> mlistStrings;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        showListview1();
    }
private void showListview1() 
{
    mlistStrings=new  ArrayList<String>();
    arrayAdapter=new  ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, mlistStrings);
    mEditText=(EditText) findViewById(R.id.editText1);
    setListAdapter(arrayAdapter);
    mEditText.setOnKeyListener(new  OnKeyListener() {
        
        @Override
        public boolean onKey(View v, int keyCode, KeyEvent event) {
            if (keyCode==KeyEvent.KEYCODE_ENTER&& event.getAction()==KeyEvent.ACTION_UP)
            {
             mlistStrings.add(mEditText.getText().toString());
             
            // setListAdapter(arrayAdapter);//慢
             arrayAdapter.notifyDataSetChanged();//快
             mEditText.setText(null);
            }
            
            return false;
            
        }
    });
}
}

删除列表

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

CursorList

 /**
 * @Title Cursor_list.java
 * @package     com.example.listviw1
 * @since  
 * @version     1.0.0 
 * @author      Vic Lee
 * @date        Aug 24, 2016-1:53:16 PM
 */
package com.example.listviw1;

import android.app.ListActivity;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.Contacts.Phones;
import android.widget.SimpleCursorAdapter;

public class Cursor_list extends ListActivity {

    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        //setContentView(R.layout.item_list);
        showCursorlist();
    }
private void showCursorlist() 
{
    //1.数据集
    Cursor cursor=getContentResolver().query(Phones.CONTENT_URI, null, null, null, null);
    //2.adapter
    SimpleCursorAdapter simpleCursorAdapter=new  SimpleCursorAdapter(this, R.layout.item_list, cursor, 
        new String[]{Phones.NAME,Phones.NUMBER},
        new int[]{R.id.textView1,R.id.textView2});
    
    //3.绑定
    setListAdapter(simpleCursorAdapter);
}
    
}

<?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:id="@+id/textView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="TextView" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="TextView" />

</LinearLayout>

模拟器没有数据显示。。。

<uses-permission android:name="android.permission.READ_CONTACTS"></uses-permission>

===============

MyExpandableListViewActivity

 /**
 * @Title MyExpandableListViewActivity.java
 * @package     com.example.listviw1
 * @since  
 * @version     1.0.0 
 * @author      Vic Lee
 * @date        Aug 24, 2016-2:48:54 PM
 */
package com.example.listviw1;

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

import android.app.ExpandableListActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.SimpleExpandableListAdapter;

public class MyExpandableListViewActivity extends ExpandableListActivity
{
    
    @Override
    public boolean onChildClick(ExpandableListView parent, View v,
            int groupPosition, int childPosition, long id) {
        
        // TODO Auto-generated method stub
        return super.onChildClick(parent, v, groupPosition, childPosition, id);
        
    }

    
    @Override
    public void onGroupCollapse(int groupPosition) {
        
        // TODO Auto-generated method stub
        super.onGroupCollapse(groupPosition);
        
    }

    
    @Override
    public void onGroupExpand(int groupPosition) {
        
        // TODO Auto-generated method stub
        super.onGroupExpand(groupPosition);
        
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        
        super.onCreate(savedInstanceState);
        //1.//build data source 
        List<HashMap<String, String>> groupData=new  ArrayList<HashMap<String,String>>();
        HashMap<String, String> _map=new HashMap<String, String>();
        _map.put("Name", "LD1");
        groupData.add(_map);
        _map=new HashMap<String, String>();
        _map.put("Name", "LD2");
        groupData.add(_map);
        _map=new HashMap<String, String>();
        _map.put("Name", "changsha");
        groupData.add(_map);
        _map=new HashMap<String, String>();
        
        List<List<HashMap<String, String>>> childData=new  ArrayList<List<HashMap<String,String>>>();
        List<HashMap<String, String>> childItem=new  ArrayList<HashMap<String,String>>();
        HashMap<String, String> _mapchild=new  HashMap<String, String>();
        _mapchild.put("Name", "LD11");
        _mapchild.put("Name", "LD22");
        _mapchild.put("Adrress", "changsha1");
        childItem.add(_mapchild);
        childData.add(childItem);
        childData.add(childItem);
        childData.add(childItem);
        
        
        //2.build data source and bind data source
        ExpandableListAdapter expandableListAdapter
        =new SimpleExpandableListAdapter(this, 
                groupData, 
                android.R.layout.simple_expandable_list_item_1,
                android.R.layout.simple_expandable_list_item_1, 
                new String[]{"Name","Adrress"}, 
                new int[]{android.R.id.text1,android.R.id.text2}, 
                childData, 
                android.R.layout.simple_expandable_list_item_2, 
                new String[]{"Name","Adrress"},
                new int[]{android.R.id.text1,android.R.id.text2});
        //3.bind UI
        setListAdapter(expandableListAdapter);
    }

}

tab

 /**
 * @Title MyTabActivity.java
 * @package     com.example.listviw1
 * @since  
 * @version     1.0.0 
 * @author      Vic Lee
 * @date        Aug 24, 2016-6:41:38 PM
 */
package com.example.listviw1;

import android.R.anim;
import android.R.drawable;
import android.app.Activity;
import android.app.TabActivity;
import android.content.Intent;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.widget.TabHost;
import android.widget.TabHost.TabSpec;

@SuppressWarnings("deprecation")
public class MyTabActivity extends  TabActivity {

    
    
    @Override
    protected void onChildTitleChanged(Activity childActivity,
            CharSequence title) {
        
        // TODO Auto-generated method stub
        super.onChildTitleChanged(childActivity, title);
        
    }

    @SuppressWarnings("deprecation")
    @Override
    public void onContentChanged() {
        
        // TODO Auto-generated method stub
        super.onContentChanged();
        
    }

    @SuppressWarnings("deprecation")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        
        super.onCreate(savedInstanceState);
        Drawable drawable1 =getResources().getDrawable(android.R.drawable.ic_dialog_email);
        Drawable drawable2 =getResources().getDrawable(android.R.drawable.ic_dialog_map);
        Drawable drawable3 =getResources().getDrawable(android.R.drawable.ic_dialog_info);
        
        TabHost tabHost=getTabHost();
        TabSpec tabSpec1=tabHost.newTabSpec("Tab1").setIndicator("",drawable1)
                .setContent(new Intent(this, MyExpandableListViewActivity.class));
        tabHost.addTab(tabSpec1);
        
        TabSpec tabSpec2=tabHost.newTabSpec("Tab2").setIndicator("",drawable2)
                .setContent(new Intent(this, Cursor_list.class));
        tabHost.addTab(tabSpec2);
        
        TabSpec tabSpec3=tabHost.newTabSpec("Tab3").setIndicator("",drawable3)
                .setContent(new Intent(this, MySlidingDrawerActivity.class));
        tabHost.addTab(tabSpec3);
        
    }

}

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原文地址：https://www.cnblogs.com/laopo/p/5802220.html