ListView控件：（3）BaseAdapter适配器生成

1.编写BaseAdapterActivity.java类

package com.example.yun;

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

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

public class BaseAdapterActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_baseadapter);

ListView baseListView = (ListView) findViewById(R.id.baseListView);
MyAdapter mAdapter = new MyAdapter(this);// 得到一个MyAdapter对象
baseListView.setAdapter(mAdapter);// 为ListView绑定Adapter

}

private class MyAdapter extends BaseAdapter {

private LayoutInflater mInflater;// 得到一个LayoutInfalter对象用来导入布局

/** 构造函数 */
public MyAdapter(Context context) {
this.mInflater = LayoutInflater.from(context);
}

@Override
public int getCount() {
// TODO Auto-generated method stub
return getData().size();
}

@Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return null;
}

@Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return 0;
}

@Override
public View getView(final int position, View convertView,
ViewGroup parent) {
// TODO Auto-generated method stub

ViewHolder holder;
// 观察convertView随ListView滚动情

if (convertView == null) {
convertView = mInflater.inflate(R.layout.item_base, null);
holder = new ViewHolder();
/** 得到各个控件的对象 */
holder.title = (TextView) convertView
.findViewById(R.id.ItemTitle);
holder.text = (TextView) convertView
.findViewById(R.id.ItemText);
holder.bt = (Button) convertView.findViewById(R.id.ItemButton);
convertView.setTag(holder);// 绑定ViewHolder对象
} else {
holder = (ViewHolder) convertView.getTag();// 取出ViewHolder对象
}
/** 设置TextView显示的内容，即我们存放在动态数组中的数据 */
holder.title.setText(getData().get(position).get("ItemTitle")
.toString());
holder.text.setText(getData().get(position).get("ItemText")
.toString());

/** 为Button添加点击事件 */
holder.bt.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
// Log.v("MyListViewBase", "你点击了按钮" +
// position);//打印Button的点击信息
Toast.makeText(BaseAdapterActivity.this,
"你点击了按钮" + position, Toast.LENGTH_LONG).show();
}
});

return convertView;

}
}

private ArrayList<HashMap<String, Object>> getData() {
ArrayList<HashMap<String, Object>> listItem = new ArrayList<HashMap<String, Object>>();
/** 为动态数组添加数据 */
for (int i = 0; i < 30; i++) {
HashMap<String, Object> map = new HashMap<String, Object>();
map.put("ItemTitle", "第" + i + "行");
map.put("ItemText", "这是第" + i + "行");
listItem.add(map);
}
return listItem;
}

public final class ViewHolder {
public TextView title;
public TextView text;
public Button bt;
}

}

2.编写activity_baseadapter.xml布局类

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#ffffff"
android:orientation="vertical" >

<RelativeLayout
android:layout_width="match_parent"
android:layout_height="160dp"
android:background="@drawable/bg02" >
</RelativeLayout>

<ListView
android:id="@+id/baseListView"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>

</LinearLayout>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

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

<TextView
android:id="@+id/ItemTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#ff00ff"
android:textSize="30px" />
</LinearLayout>

<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal" >

<ImageView
android:id="@+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:maxWidth="100px"
android:src="@drawable/ic_launcher" />

<Button
android:id="@+id/ItemButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="left"
android:text="Button" />

<TextView
android:id="@+id/ItemText"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>

</LinearLayout>