android list

list展现数据有多种方式，但是基本模式都差不多，如下：

（1）在布局文件中加入：ListView控件

（2）获得ListView控件 

（3）准备数据

（4）数据填充到adapter

（5）将adapter捆绑到ListView上

根据数据的获得方式和复杂度选择不同的list adapter填充方式。

1.简单的adapter填充，只需要根据adatper的参数配置上去就OK。

2.BaseAdapter可以定制各种复杂的list内容

3.CusorAdapter比较实用于数据库实时更新同步的情况。

package listview;

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

import com.studymar.radiocheckbox.R;
import com.studymar.radiocheckbox.R.id;
import com.studymar.radiocheckbox.R.layout;

import android.R.anim;
import android.app.Activity;
import android.os.Bundle;
import android.support.v4.widget.CursorAdapter;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;

public class TestListView extends Activity {
	//1.声明控件
	ListView myListView=null;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
		setContentView(R.layout.testlistview);
		Log.i("123", "TestListView oncreate");
		//2.初始化控件
		myListView=(ListView)findViewById(R.id.mylist);
		//3.填充list,根据不同的值用不同的方式填充
		fillList(1);
		//4.设置list监听
		myListView.setOnItemClickListener(new OnItemClickListener() {
			@Override
			public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
					long arg3) {
				Log.i("123", "arg1.getid()="+arg1.getId()+",arg2="+arg2+",arg3="+arg3);
				Log.i("123","view.getid()="+arg0.getAdapter().getItemId(arg2));
			} 
		});
	}
	private void fillList(int n) {
		if(n==0)
			SimpleAdapterfill();
		else if(n==1)
			BaseAdapterfill();
		else if(n==2)
			CursorAdapterfill();
		else {
			
		}
	}
	private void CursorAdapterfill() {
		// TODO Auto-generated method stub
		
	}
	private void BaseAdapterfill() {
		ArrayList<String> name=new ArrayList<String>();
		name.add("zhangsan");
		name.add("lisi");
		name.add("wangwu");
		name.add("maliu");
		name.add("luqi");
		name.add("caiba");
		myListView.setAdapter(new MyAdapter(name,this));
	}
	private void SimpleAdapterfill() {
		ArrayList<HashMap<String,String>> dataList=new ArrayList<HashMap<String,String>>();
		HashMap<String, String> map1=new HashMap<String, String>();
		HashMap<String, String> map2=new HashMap<String, String>();
		HashMap<String, String> map3=new HashMap<String, String>();
		map1.put("name", "zhangsan");
		map1.put("id", "1");
		map2.put("name", "lisi");
		map2.put("id", "2");
		map3.put("name", "wangwu");
		map3.put("id", "3");
		dataList.add(map1);
		dataList.add(map2);
		dataList.add(map3);
		myListView.setAdapter(new SimpleAdapter(TestListView.this, dataList, R.layout.listxml,new String[]{"name","id"}, new int[]{R.id.t1,R.id.t2}));
		
	}
	
}

package listview;

import java.util.ArrayList;

import org.w3c.dom.NameList;

import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ListAdapter;
import android.widget.TextView;

public class MyAdapter extends BaseAdapter{
	ArrayList<String> nameArrayList=null;
	Context ccContext=null;
	 public MyAdapter(ArrayList<String> name,Context ccContext){
		this.nameArrayList=name;
		this.ccContext=ccContext;
	}
	@Override
	public int getCount() {
		// TODO Auto-generated method stub
		return nameArrayList.size();
	}

	@Override
	public Object getItem(int position) {
		
		return nameArrayList.get(position);
	}

	@Override
	public long getItemId(int position) {
		// TODO Auto-generated method stub
		return position;
	}

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
		TextView tempTextView=new TextView(ccContext);
		if(convertView==null){
			tempTextView.setText(nameArrayList.get(position));
			return tempTextView;
		}
		return (TextView)convertView;
	}

}

<?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" >
	<ListView 
	    android:id="@+id/mylist"
	    android:layout_width="fill_parent"
	    android:layout_height="fill_parent"
	    />  

</LinearLayout>

<?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" >
    <TextView 
        android:id="@+id/t1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        />
     <TextView 
        android:id="@+id/t2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        />
</LinearLayout>