类似于选择城市相同的首字母放在一起的效果

1.类似效果如下：

2.实现效果如下（时间有限完成的一般）：

3.上代码

3.1 ListViewTest.java

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import java.util.ArrayList;import java.util.HashMap;import android.app.Activity;import android.os.Bundle;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.LinearLayout;import android.widget.ListView;import android.widget.TextView;public class ListViewTest extends Activity{private ListView list;private ArrayList<HashMap<String, String>> data = new ArrayList<HashMap<String,String>>();@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.listview);init();}private void init(){list = (ListView)findViewById(R.id.listView1);/** * 获取数据时应该把相同flag的数据放在一起 * 不同的放在前面 */HashMap< String, String> map;map = new HashMap<String, String>();map.put("name", "测试数据A");map.put("flag", "flag");data.add(map);map = new HashMap<String, String>();map.put("name", "测试数据B");map.put("flag", "flag");data.add(map);map = new HashMap<String, String>();map.put("name", "测试数据C");map.put("flag", "flag");data.add(map);map = new HashMap<String, String>();map.put("name", "测试数据D");map.put("flag", "flag");data.add(map);for(int i = 0; i<20; i++){map = new HashMap<String, String>();map.put("name", "测试数据"+i);map.put("flag", "flag"+i/5);data.add(map);}int length = data.size();String flag = "";for(int i=0; i<length; i++){//flag 处理if((i<length-1)&&!flag.equals(data.get(i+1).get("flag").replace("flag", ""))){flag = data.get(i+1).get("flag").replace("flag", "");data.get(i).put("flag", flag);}else{data.get(i).put("flag", "flag");}}list.setCacheColorHint(0);list.setAdapter(new Adapter());}class Adapter extends BaseAdapter{@Overridepublic int getCount() {return data.size();}@Overridepublic Object getItem(int position) {return position;}@Overridepublic long getItemId(int position) {return position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {LayoutInflater inflater = (LayoutInflater)getSystemService(LAYOUT_INFLATER_SERVICE);    View view = inflater.inflate(R.layout.listview_item, null);TextView name = (TextView)view.findViewById(R.id.name);name.setText(data.get(position).get("name"));if(!"flag".equals(data.get(position).get("flag"))){TextView flag_name = (TextView) view.findViewById(R.id.flag_name);TextView flag = (TextView) view.findViewById(R.id.flag);LinearLayout line = (LinearLayout) view.findViewById(R.id.line);flag_name.setText(data.get(position).get("flag"));flag.setText(data.get(position).get("flag").replace("flag", ""));line.setVisibility(View.VISIBLE);flag_name.setVisibility(View.VISIBLE);flag.setVisibility(View.VISIBLE);}return view;}}}

3.2 listview.xml

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<?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="vertical" >    <ListView        android:id="@+id/listView1"        android:layout_width="match_parent"        android:layout_height="wrap_content" >    </ListView></LinearLayout>

3.3listview_item.xml

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<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="100dip"    android:background="#ffffff"    android:orientation="horizontal" >    <TextView        android:id="@+id/name"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignParentTop="true"        android:text="name" />    <TextView        android:id="@+id/flag_name"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_below="@id/name"        android:text="flag_name"        android:visibility="invisible" />    <TextView        android:id="@+id/flag"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_below="@id/name"        android:text="flag"        android:layout_alignParentRight="true"         android:visibility="invisible"/>    <LinearLayout        android:id="@+id/line"        android:layout_width="fill_parent"        android:layout_height="2dip"        android:layout_alignParentBottom="true"        android:background="#ff0000"        android:visibility="invisible" >    </LinearLayout></RelativeLayout>

这只是个demo如有其它需求可以根据这个思路 自己修改-.-。