首先，明确新建列表流程：
新建适配器--》添加数据源到适配器--》加载适配器到视图
数据适配器的作用：把复杂的数据（数组、链表、数据库、集合等）填充在指定视图界面上。
ArrayAdapter：绑定单一数据，数据源可以是集合或数组
SimpleAdapter：用于绑定格式复杂的数据，数据源是特定泛型的集合
数据适配器是连接数据源和视图界面的桥梁。
下面给出一个例子,实例中有两个列表和点击事件：
activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ListView
android:id="@+id/ListView_1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
>
</ListView>
<Button
android:id="@+id/Button_1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="跳转"
android:textColor="#000000" />
</LinearLayout>
MainActivity.java
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewTreeObserver.OnScrollChangedListener;
import android.widget.AbsListView;
import android.widget.AbsListView.OnScrollListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.Toast;
public class MainActivity extends Activity {
private ListView listView01;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
String[] str = {"a","b","c","d"};
listView01 = (ListView) findViewById(R.id.ListView_1);
Button button01 = (Button) findViewById(R.id.Button_1);
//上下文，布局文件，数据源
ArrayAdapter<String> arr_adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1 ,str);
listView01.setAdapter(arr_adapter);
button01.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
Intent intent = new Intent(MainActivity.this,SimpleItemActivity.class);
MainActivity.this.startActivity(intent);
}
});
}
}
activity_simple_item.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="horizontal" >
<ListView
android:id="@+id/ListView_02"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
>
</ListView>
</LinearLayout>
SimpleItemActivity.java
package com.example.day01;
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.util.Log;
import android.view.View;
import android.widget.AbsListView;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.Toast;
import android.widget.AbsListView.OnScrollListener;
import android.widget.AdapterView.OnItemClickListener;
public class SimpleItemActivity extends Activity implements OnItemClickListener,OnScrollListener{
private ListView listView;
private SimpleAdapter sim_adapter;
private List<Map<String,Object>> list;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_simple_item);
//页面的初始化ListView控件
listView = (ListView) findViewById(R.id.ListView_02);
//新建SimpleAdapter，上下文，布局文件，键值对键名，键值对值
sim_adapter = new SimpleAdapter(this, getData(),R.layout.item ,new String[]{"pic","text"} ,new int[]{R.id.ImageView_01,R.id.TextView_01});
//视图加载适配器
listView.setAdapter(sim_adapter);
listView.setOnItemClickListener(this);
listView.setOnScrollListener(this);
}
private List<Map<String, Object>> getData() {
list = new ArrayList<Map<String,Object>>();
for(int i=0;i<20;i++){
Map<String,Object> map = new HashMap<String,Object>();
map.put("pic", R.drawable.ic_launcher);
map.put("text", "小鬼"+i);
list.add(map);
}
return list;
}
@Override
public void onItemClick(AdapterView<?> adapter, View v, int position, long id) {
String text = listView.getItemAtPosition(position)+"";
Toast.makeText(this, text, Toast.LENGTH_SHORT).show();;
}
@Override
public void onScroll(AbsListView arg0, int arg1, int arg2, int arg3) {
}
@Override
public void onScrollStateChanged(AbsListView view, int state) {
switch(state){
case SCROLL_STATE_TOUCH_SCROLL:
Log.i("tag","手指正在滑动");
Map<String,Object> map = new HashMap<String,Object>();
map.put("pic", R.drawable.ic_launcher);
map.put("text", "大鬼");
list.add(map);
sim_adapter.notifyDataSetChanged();
break;
case SCROLL_STATE_FLING:
Log.i("tag","手指移开，自动滑动中。。。");
break;
case SCROLL_STATE_IDLE:
Log.i("tag","停止滑动");
break;
}
}
}
item.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="horizontal" >
<ImageView
android:id="@+id/ImageView_01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:background="@drawable/ic_launcher" />
<TextView
android:id="@+id/TextView_01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:text="@string/xiaogui"
android:textColor="#000000"
/>
</LinearLayout>
效果演示：
item.gif
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