public class MainActivity extends Activity {

private final String TAG = "BX";

private LocationManager locationManager;  private int latitude = 0;// 纬度  private int longitude = 0;// 经度  private LocationListener locationListener;  // 表示是否GPS定位成功  private Boolean isGPSSuccessful;

private Button btn;

private String city;

private Handler handler = new Handler() {

@Override   public void handleMessage(Message msg) {    // TODO Auto-generated method stub    super.handleMessage(msg);    if (msg.what == 0) {     city = (String) msg.obj;    }   }  };

@Override  protected void onCreate(Bundle savedInstanceState) {   super.onCreate(savedInstanceState);   setContentView(R.layout.activity_main);   // 初始化GPS监听   initLocationListener();   // 初始化locationManager   initLocationManager();   btn = (Button) findViewById(R.id.button1);   btn.setOnClickListener(l);  }

private void initLocationManager() {   locationManager = (LocationManager) this     .getSystemService(Context.LOCATION_SERVICE);   Criteria criteria = new Criteria();   // 设置方向的精确 可选参数有ACCURACY_LOW,低ACCURACY_HIGH 高NO_REQUIREMENT.没有要求   criteria.setAccuracy(Criteria.ACCURACY_FINE);   // 设置是否需要获取海拔数据   criteria.setAltitudeRequired(false);   // 设置是否需要获得方向信息   criteria.setBearingRequired(false);   criteria.setCostAllowed(true);   criteria.setPowerRequirement(Criteria.POWER_LOW);// 低功效   // String provider = locationManager.getBestProvider(criteria, true);   String provider = LocationManager.NETWORK_PROVIDER;   Log.e(TAG, "priovider=" + provider);   Location location = locationManager.getLastKnownLocation(provider);   Log.e(TAG, location + "");   // 设置监听器，自动更新的最小时间为间隔1秒，最小位移变化超过5米      locationManager.requestLocationUpdates(provider, 1000, 5,      locationListener);

updateNewLocation(location);  }

private void initLocationListener() {   locationListener = new LocationListener() {    public void onLocationChanged(Location location) {     updateNewLocation(location);    }

public void onProviderDisabled(String provider) {     updateNewLocation(null);    }

public void onProviderEnabled(String provider) {     updateNewLocation(null);

}

public void onStatusChanged(String provider, int status,      Bundle extras) {     switch (status) {     // GPS状态为可见时     case LocationProvider.AVAILABLE:      Log.i(TAG, "当前GPS状态为可见状态");      break;     // GPS状态为服务区外时     case LocationProvider.OUT_OF_SERVICE:      Log.i(TAG, "当前GPS状态为服务区外状态");      break;     // GPS状态为暂停服务时     case LocationProvider.TEMPORARILY_UNAVAILABLE:      Log.i(TAG, "当前GPS状态为暂停服务状态");      break;     }    }   };  }

private void updateNewLocation(Location location) {   if (location != null) {    latitude = (int) location.getLatitude();    longitude = (int) location.getLongitude();   } else {    Log.e(TAG, "定位不成功");   }  }

private View.OnClickListener l = new View.OnClickListener() {   @Override   public void onClick(View v) {    // TODO Auto-generated method stub

Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);    startActivityForResult(intent, 0);   }  };

protected void onActivityResult(int requestCode, int resultCode, Intent data) {   Log.e(TAG, latitude + "");   getCityName();   // if (resultCode == RESULT_OK) {   if (requestCode == 0) {    File file = new File("sdcard/PhoneHelper/Picture/");    file.mkdirs();// 创建文件夹    String fileName = "/mnt/sdcard/PhoneHelper/Picture/" + city      + ".jpg";    Log.e("BX", "" + fileName);    Bundle bundle = data.getExtras();    Bitmap bmp = (Bitmap) bundle.get("data");    try {     FileOutputStream out = new FileOutputStream(fileName);     bmp.compress(CompressFormat.JPEG, 100, out);     Log.e("BX", "保存");

} catch (FileNotFoundException e) {     // TODO Auto-generated catch block     e.printStackTrace();    }   }

// }  };

public String geocodeAddr(String latitude, String longitude) {   String addr = "";

// 也可以是http://maps.google.cn/maps/geo?output=csv&key=abcdef&q=%s,%s，不过解析出来的是英文地址   // 密钥可以随便写一个key=abc   // output=csv,也可以是xml或json，不过使用csv返回的数据最简洁方便解析   String url = String.format(     "http://ditu.google.cn/maps/geo?output=csv&key=abcdef&q=%s,%s",     latitude, longitude);   URL myURL = null;   URLConnection httpsConn = null;   try {    myURL = new URL(url);   } catch (MalformedURLException e) {    e.printStackTrace();    return null;   }   try {    httpsConn = (URLConnection) myURL.openConnection();    if (httpsConn != null) {     InputStreamReader insr = new InputStreamReader(       httpsConn.getInputStream(), "UTF-8");     BufferedReader br = new BufferedReader(insr);     String data = null;     if ((data = br.readLine()) != null) {      System.out.println(data);      String[] retList = data.split(",");      if (retList.length > 2 && ("200".equals(retList[0]))) {       addr = retList[2];       addr = addr.replace("\"", "");      } else {       addr = "";      }     }     insr.close();    }   } catch (IOException e) {    e.printStackTrace();    return null;   }   return addr;  }

private void getCityName() {   new Thread(new Runnable() {    @Override    public void run() {     // TODO Auto-generated method stub     Message msg = new Message();     msg.what = 0;     msg.obj = geocodeAddr(latitude + "", longitude + "");     handler.sendMessage(msg);    }   }).start();  }

@Override  protected void onResume() {   super.onResume();   locationManager.requestLocationUpdates(     LocationManager.NETWORK_PROVIDER, 1000, 5, locationListener);  }

@Override  protected void onPause() {   super.onPause();   locationManager.removeUpdates(locationListener);  }

}