【android】ListView适配器

适配器的new方法如下

SimpleAdapter s =new SimpleAdapter(this, list, R.layout.activity_adaper, new String[]{"img","title","info"}, new int[]{R.id.img,R.id.title,R.id.info});

参数

1.上下文activity

2.list<>  这个list里面是map<>，map的两个参数分别是 adapter 布局文件中 各个容器的的id，第二个是要放的东西。

3. adapter 布局文件中 各个容器的的id

4.R.id.XX 对应上面

在第二个参数里 加几组map就有几个item

举个例子

package com.example.adaptertest;

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.view.Menu;
import android.view.MenuItem;
import android.widget.ListView;
import android.widget.SimpleAdapter;

public class MainActivity extends Activity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		List<Map<String,Object>> list = new ArrayList<Map<String,Object>>();
		
		Map<String, Object> m = new HashMap<String,Object>();
		m.put("img", R.drawable.ic_launcher);
		m.put("title", "ttttttttt");
		m.put("info", "IIIIIIIIIIII");
		list.add(m);
		
		SimpleAdapter s =new SimpleAdapter(this, list, R.layout.activity_adaper, new String[]{"img","title","info"}, new int[]{R.id.img,R.id.title,R.id.info});
	
		ListView list1 = (ListView) findViewById(R.id.list);
		list1.setAdapter(s);
	
	}
}

adapter的布局文件

<?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="horizontal" >

    <ImageView
        android:id="@+id/img"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="5px" />

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical" >

        <TextView
            android:id="@+id/title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textColor="#FFFFFFFF"
            android:textSize="22px" />

        <TextView
            android:id="@+id/info"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textColor="#FFFFFFFF"
            android:textSize="13px" />
    </LinearLayout>

</LinearLayout>

具体参见

http://www.cnblogs.com/devinzhang/archive/2012/01/20/2328334.html

http://www.cnblogs.com/angeldevil/archive/2012/04/05/2432615.html

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