<!--main.xml-->
<?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"
        >
        <RelativeLayout
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
         >
         <Spinner
                 android:id="@+id/subway_lines"
                 android:layout_width="fill_parent"
                 android:layout_height="wrap_content">
         </Spinner>
         <TextView
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_below="@id/subway_lines"
            android:layout_alignLeft="@id/subway_lines"
            android:id="@+id/select_line"
         />
     </RelativeLayout>
    <ListView
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:id="@+id/station_listView"
    />
</LinearLayout>

 

<!--stationitem.xml-->
<?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="fill_parent">
     <TextView
        android:layout_width="200px"
        android:layout_height="fill_parent"
        android:textSize="20px"
        android:gravity="center_horizontal"
        android:id="@+id/station_name"
     />
     <TextView
        android:layout_width="200px"
        android:layout_height="fill_parent"
        android:layout_toRightOf="@id/station_name"
        android:textSize="20px"
        android:layout_alignTop="@id/station_name"
        android:id="@+id/station_info"
     />
</RelativeLayout>

 

import java.util.ArrayList;

public class SubwayActivity extends Activity {

private static final String TAG = "SubwayActivity";
        private SubwayService subwayService;
        private TextView selectLine;
        private Spinner subwayLines;
        private ArrayAdapter<String> linesAdapter;
        private List<String> linesNames;
        private ListView stationListView;
        private SimpleAdapter stationsAdapter;

@Override
        public void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

stationListView = (ListView) findViewById(R.id.station_listView);
    subwayService = new SubwayService(this);

//初始化数据
//    subwayService.init();

List<SubwayLine> listLines = subwayService.getLineScrollData();
    linesNames = new ArrayList<String>();
    for (SubwayLine subwayLine : listLines) {
      linesNames.add(subwayLine.getLineName());
    }
    // 第一步：添加一个下拉列表项的list，这里添加的项就是下拉列表的菜单项
    selectLine = (TextView) findViewById(R.id.select_line);
    subwayLines = (Spinner) findViewById(R.id.subway_lines);
    // 第二步：为下拉列表定义一个适配器，这里就用到里前面定义的list。
    linesAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item,linesNames);
    // 第三步：为适配器设置下拉列表下拉时的菜单样式。
    linesAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    // 第四步：将适配器添加到下拉列表上
    subwayLines.setAdapter(linesAdapter);
    //第五步：为下拉列表设置各种事件的响应，这个事响应菜单被选中
    subwayLines.setOnItemSelectedListener(selectedListener);
    /*下拉菜单弹出的内容选项触屏事件处理*/
    subwayLines.setOnTouchListener(onTouchListener);
    /*下拉菜单弹出的内容选项焦点改变事件处理*/
    subwayLines.setOnFocusChangeListener(onFocusChangeListener);
        }

/**
         * 为下拉列表设置各种事件的响应，这个事响应菜单被选中
         */
        private OnItemSelectedListener selectedListener =    new Spinner.OnItemSelectedListener(){
          @SuppressWarnings("unchecked")
                public void onItemSelected(AdapterView arg0, View arg1, int arg2, long arg3) {
            String lineName = linesAdapter.getItem(arg2);
            SubwayLine line = subwayService.findLine(lineName);
            /*根据lineId查询出stations*/
            List<SubwayStation> stations = subwayService.getStationLineScrollData(line.getLineId());
            /*把stations的属性值放到List<HashMap<String, String>>中*/
            List<HashMap<String, String>> data = new    ArrayList<HashMap<String, String>>();
                        for (SubwayStation station : stations) {
                          HashMap<String, String> map = new HashMap<String, String>();
                          if(station.getIsChange() == 1){
                            map.put("stationName", station.getStationName());
                            List<SubwayStation> changeStations = subwayService.getChangeStationExceptThis(station.getStationName(), line.getLineId());
                            StringBuilder builder = new StringBuilder();
                            builder.append("换乘 ");
                            if(changeStations != null && changeStations.size() > 0){
                              for (SubwayStation changeStation : changeStations) {
                                SubwayLine changeLine = subwayService.findLine(changeStation.getLineId());
                                      builder.append(changeLine.getLineName()).append(",");
                  }
                              builder.deleteCharAt(builder.length()-1);
                            }
                                  map.put("stationInfo",builder.toString());
                          }else{
                            map.put("stationName", station.getStationName());
                                  map.put("stationInfo", station.getStationInfo());
                          }
                                data.add(map);
            }
                        /*设置stationsAdapter适配器*/
      stationsAdapter = new SimpleAdapter(
          SubwayActivity.this,
          data,
          R.layout.stationitem,
          new String[] { "stationName", "stationInfo" },
          new int[] { R.id.station_name, R.id.station_info });
      stationListView.setAdapter(stationsAdapter);

/* 将所选mySpinner 的值带入myTextView 中*/
                  selectLine.setText("以下是："+ lineName +" 车站列表...");
                        /* 将mySpinner 显示*/
                        arg0.setVisibility(View.VISIBLE);
                }
                @SuppressWarnings("unchecked")
                public void onNothingSelected(AdapterView arg0) {
                  selectLine.setText("");
                        arg0.setVisibility(View.VISIBLE);
                }
        };

/**
         * 下拉菜单弹出的内容选项触屏事件处理
         */
        private OnTouchListener onTouchListener = new Spinner.OnTouchListener(){
                public boolean onTouch(View v, MotionEvent event) {
                        /* 将mySpinner 隐藏，不隐藏也可以，看自己爱好*/
//                        v.setVisibility(View.INVISIBLE);
                        return false;
                }
        };

/**
         * 下拉菜单弹出的内容选项焦点改变事件处理
         */
        private OnFocusChangeListener onFocusChangeListener = new Spinner.OnFocusChangeListener(){
    public void onFocusChange(View v, boolean hasFocus) {
      v.setVisibility(View.VISIBLE);
    }
  };
}

 

/*设置stationsAdapter适配器*/
            stationsAdapter = new SimpleAdapter(
                    SubwayActivity.this,
                    data,
                    R.layout.stationitem,
                    new String[] { "stationName", "stationInfo" },
                    new int[] { R.id.station_name, R.id.station_info });
            stationListView.setAdapter(stationsAdapter);

 

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