GPS获取城市名字问题~

Question

我用GPS功能做了一个获取城市名字的功能,然后把这个名字发送给服务器的程序public class SelectCityActivity extends Activity{
private RadioGroup selectType = null;
private RadioButton selectTypeCity = null;
private RadioButton selectGps = null;
private AutoCompleteTextView editCityName = null;
private Button okButton = null;
private String selectCity = null;
private String flag_selectType = null;
private String username = null;
private String nickname = null;
private Double latitude=null;
private Double longitude = null;
private TextView test = null;
LocationManager locationManager=null;
static final String[] COUNTRIES = new String[]{
"Leicester","London","Leeds"
};
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.selectcityactivity);
        selectType = (RadioGroup)findViewById(R.id.SelectType);
        selectTypeCity = (RadioButton)findViewById(R.id.TypeCity);
        selectGps = (RadioButton)findViewById(R.id.UseGPS);
        editCityName = (AutoCompleteTextView)findViewById(R.id.EditCityName);
        List<String> list = new ArrayList<String>();
        list.add("Leicester");
        list.add("London");
        list.add("Leeds");
        
        ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(this,R.layout.autocompletetextview,list);
       editCityName.setAdapter(arrayAdapter);
       Intent intent = getIntent();
       username = intent.getStringExtra("username");
       nickname = intent.getStringExtra("nickname");
       okButton = (Button)findViewById(R.id.OK);
       okButton.setOnClickListener(new OKButtonListener());
       test=(TextView)findViewById(R.id.test);
    
       
       selectType.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
        @Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
if(selectTypeCity.getId() == checkedId){
editCityName.setVisibility(View.VISIBLE);
flag_selectType = "TypeName";
}
else if(selectGps.getId() == checkedId)
{
editCityName.setVisibility(View.GONE); flag_selectType = "UseGPS";
}
}
       });
    }
       class OKButtonListener implements Button.OnClickListener{
        
@Override
public void onClick(View arg0) {


handler.post(SelectCityThread);
}
       }
       Handler handler = new Handler(){    @Override
    public void handleMessage(Message msg) {
    // TODO Auto-generated method stub
   
    }
       
       };
       Runnable SelectCityThread = new Runnable(){
      
      public void run(){
      try{
    
      if(flag_selectType==null){
      Toast.makeText(SelectCityActivity.this, "Please choose a Type to select a city in UK", Toast.LENGTH_SHORT).show();
      }
      else {
      
     if(flag_selectType.equals("TypeName")){
      selectCity = editCityName.getText().toString();
      transMit();
      }
     //用GPS查找城市名
      else if (flag_selectType.equals("UseGPS")){
      openGPSSettings();
  String serviceName = Context.LOCATION_SERVICE;
  locationManager = (LocationManager) SelectCityActivity.this.getSystemService(serviceName);  Criteria criteria = new Criteria();
  criteria.setAccuracy(Criteria.ACCURACY_FINE); // 高精度
  criteria.setAltitudeRequired(false);
  criteria.setBearingRequired(false);
  criteria.setCostAllowed(true);
  criteria.setPowerRequirement(Criteria.POWER_LOW); // 低功耗
  System.out.println("openGPS 1");
  String provider = locationManager.getBestProvider(criteria, true); // 获取GPS信息
  Location location = locationManager.getLastKnownLocation(provider); // 通过GPS获取位置
  System.out.println("openGPS 2");
              System.out.println("3");
     locationManager.requestLocationUpdates(provider, 0, 0, locationListener);
  System.out.println(latitude+" b "+longitude);
  System.out.println("4");      }
      }
      }
      catch(Exception e) 
{
// TODO: handle exception
e.printStackTrace();
}
      }
      }  ;
      
      private void transMit(){
      try {
      ArrayList<String> sightName = new ArrayList<String>();
      String selectCityName = selectCity;
      Socket socket = null;
 if(selectCity.equals("")){
 Toast.makeText(SelectCityActivity.this, "Please select a city in UK", Toast.LENGTH_SHORT).show();
 }
 else {
socket = new Socket("192.168.1.64",4445);
//向服务器发送消息
PrintWriter out = null;
if(selectCityName.equals("Greater London"))
      {
      selectCityName = "London";
      }
if(selectCityName.equals("Leicestershire"))
{
selectCityName = "Leicester";
}

out = new PrintWriter( new BufferedWriter( new OutputStreamWriter(socket.getOutputStream())),true);      
out.println(selectCityName);

//接收来自服务器的消息
String msg = null;
BufferedReader br = new BufferedReader(new InputStreamReader(socket.getInputStream())); 
int i = 0; while((msg = br.readLine())!=null&&(!msg.equals("false"))&&(!msg.equals("true"))){ System.out.println(msg);

System.out.println(i);
sightName.add(msg);    
i++;
}
if(msg.equals("true")){

System.out.println(msg);
Intent intent = new Intent();
Bundle bundle = new Bundle();
bundle.putStringArrayList("sightname", sightName); intent.putExtras(bundle);
intent.putExtra("username", username);
intent.putExtra("nickname", nickname);
intent.putExtra("cityname", selectCityName);
intent.setClass(SelectCityActivity.this, SelectSightActivity.class);
SelectCityActivity.this.startActivity(intent);
}
else {
Toast.makeText(SelectCityActivity.this, "Sorry, we can not find the city.", Toast.LENGTH_SHORT).show();
System.out.println(msg); }
System.out.println(username);

//关闭流
out.close();
br.close();
//关闭Socket
socket.close(); 
}}
catch (Exception e) 
{
// TODO: handle exception
e.printStackTrace();
}
      }
       
      private void openGPSSettings() {
          LocationManager alm = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
          if (alm.isProviderEnabled(android.location.LocationManager.GPS_PROVIDER)) {
           Toast.makeText(this, "GPS模块正常", Toast.LENGTH_SHORT).show();
           return;
          }
          else {
          Toast.makeText(this, "请开启GPS！", Toast.LENGTH_SHORT).show();
          Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
          startActivityForResult(intent,0); //此为设置完成后返回到获取界面
          }
         }
      private final LocationListener locationListener = new LocationListener(){
             @Override
             
             public void onLocationChanged(Location location) {
              System.out.println(location.getLatitude()+" k "+location.getLongitude());
              latitude=location.getLatitude();
              longitude=location.getLongitude();
              String LatitudStr =
  latitude.toString();
  String LongitudeStr = 
  longitude.toString();
  System.out.println(LatitudStr+" a "+LongitudeStr);
  String url = "http://maps.googleapis.com/maps/api/geocode/json?latlng="+LatitudStr+","+LongitudeStr+"&sensor=false";
  //创建一个HttpClient对象
  HttpClient httpClient = new DefaultHttpClient();
  String responseData = "";
  try{
  //向指定的URL发送Http请求
  HttpResponse response = httpClient.execute(new HttpGet(url));
  //取得服务器返回的响应
  System.out.println("1");     HttpEntity entity = response.getEntity();
  BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(entity.getContent()));
  String line = "";
  System.out.println("2");
  while((line = bufferedReader.readLine()) != null){
  responseData = responseData + line; 
  }
  }
  catch (Exception e) {
  e.printStackTrace();
  }
 
  System.out.println("3");
  Gson gson = new Gson();
  TestResult testResult = gson.fromJson(responseData, TestResult.class);
 
  String result = testResult.toString();
  String [] split = null;
  split = result.split("], ");
  String city = null;
  String kill;
 
  int i = 0;
  while(i<=5){
  String [] splitSec = null;
  kill = split[i];
  splitSec = kill.split("!=!");
  String type = splitSec[1];
  city = splitSec[0];
  if(type.equals("[administrative_area_level_2, political")){
  System.out.println(type);
  System.out.println(city);
  selectCity = city;
  }
  i++;
  }
  System.out.println(result);
  Toast.makeText(SelectCityActivity.this, city, Toast.LENGTH_SHORT).show();
  transMit();
  locationManager.removeUpdates(locationListener);
      }
             
             @Override
             public void onProviderDisabled(String provider) {
                 // TODO Auto-generated method stub
                 
             }             @Override
             public void onProviderEnabled(String provider) {
                 // TODO Auto-generated method stub
                 
             }             @Override
             public void onStatusChanged(String provider, int status, Bundle extras) {
                 // TODO Auto-generated method stub
                 
             }
     };    
}但是我在DDMS里面测试正常,只发送一次名字,用真机就会传三次或多次,就是说把这个名字传服务器好几次,这是为什么?
请问我代码有什么错误吗?

Answer 1

我也有同样的问题 
顶哈