Android实现的ListView分组布局改进示例

package whu.iss.wuxianglong;
import java.util.ArrayList;
import java.util.List;
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.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
public class SeparateListView extends Activity {
  ListView listView;
  MyAdapter myAdapter;
  public List<String> listTag = new ArrayList<String>();
  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    listView = (ListView) findViewById(R.id.list);
    myAdapter = new MyAdapter(this,
        android.R.layout.simple_expandable_list_item_1, getData());
    listView.setAdapter(myAdapter);
  }
  private List<String> getData() {
    List<String> data = new ArrayList<String>();
    int i = 0;
    data.add("A");
    listTag.add("A");
    data.add("aa试数据" + (i++));
    data.add("a试数据" + (i++));
    data.add("aa试数据" + (i++));
    listTag.add("B");
    data.add("B");
    data.add("bb试数据" + (i++));
    data.add("b试数据" + (i++));
    data.add("b试数据" + (i++));
    data.add("b试数据" + (i++));
    listTag.add("C");
    data.add("C");
    data.add("c测试数据" + (i++));
    data.add("c测试数据" + (i++));
    listTag.add("D");
    data.add("D");
    data.add("d测试数据" + (i++));
    data.add("d测试数据" + (i++));
    data.add("d测试数据" + (i++));
    listTag.add("E");
    data.add("E");
    data.add("e测试数据" + (i++));
    data.add("e测试数据" + (i++));
    data.add("e测试数据" + (i++));
    listTag.add("F");
    data.add("F" );
    data.add("f测试数据" + (i++));
    return data;
  }
  class MyAdapter extends ArrayAdapter<String> {
    public MyAdapter(Context context, int textViewResourceId,
        List<String> objects) {
      super(context, textViewResourceId, objects);
    }
    @Override
    public boolean areAllItemsEnabled() {
      return false;
    }
    @Override
    public boolean isEnabled(int position) {
      // 如果-开头，则该项不可选
      return !listTag.contains(getItem(position));
    }
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
      View view = convertView;
     //根据标签类型加载不通的布局模板
      if(listTag.contains(getItem(position))){
        //如果是标签项
        view = LayoutInflater.from(getContext()).inflate(R.layout.group_list_item_tag, null);
      }else{
        //否则就是数据项
        view = LayoutInflater.from(getContext()).inflate(R.layout.group_list_item, null);
      }
     //显示名称
      TextView textView = (TextView) view.findViewById(R.id.group_list_item_text);
      textView.setText(getItem(position));
     //返回重写的view
      return view;
    }
  }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
  >
  <ListView
    android:id="@+id/list"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content">
  </ListView>
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="horizontal"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:padding="5dip">
  <ImageView
    android:src="@drawable/icon"
    android:layout_width="50px"
    android:layout_height="50px">
  </ImageView>
  <TextView
    android:id="@+id/group_list_item_text"
    android:layout_width="wrap_content"
    android:layout_height="fill_parent"
    android:paddingLeft="5dip"
    android:gravity="center_vertical">
  </TextView>
</LinearLayout>

<?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="wrap_content"
  android:background="#555555"
  android:paddingLeft="10dip">
  <TextView
    android:id="@+id/group_list_item_text"
    android:layout_width="wrap_content"
    android:layout_height="20dip"
    android:textColor="#ffffff"
    android:gravity="center_vertical">
  </TextView>
</LinearLayout>