三种定位总结

1权限： <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>

第一种方式通过JASON来实现，是通过基站方式的，引用文章地址：http://www.cnblogs.com/dartagnan/archive/2011/3/9.html，下载只是实现定位的代码

 1 /**  2   * Google定位的实现.<br/>  3   * Geolocation的详细信息请参见：<br/>  4   * <a  5   * href="http://code.google.com/apis/gears/geolocation_network_protocol.html" mce_href="http://code.google.com/apis/gears/geolocation_network_protocol.html">  6   * http://code.google.com/apis/gears/geolocation_network_protocol.html</a>  7   */   8 public class LocationAct extends Activity {   9      private TextView txtInfo;  10      public void onCreate(Bundle savedInstanceState) {  11          super.onCreate(savedInstanceState);  12          setContentView(R.layout.main);  13          Button btn = (Button) findViewById(R.id.btnStart);  14          txtInfo = (TextView) findViewById(R.id.txtInfo);  15          btn.setOnClickListener(new Button.OnClickListener() {  16              public void onClick(View view) {  17                  getLocation();  18              }  19          });  20      }  21      private void getLocation() {  22          TelephonyManager tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);  23          GsmCellLocation gsmCell = (GsmCellLocation) tm.getCellLocation();  24          int cid = gsmCell.getCid();  25          int lac = gsmCell.getLac();  26          String netOperator = tm.getNetworkOperator();  27          int mcc = Integer.valueOf(netOperator.substring(0, 3));  28          int mnc = Integer.valueOf(netOperator.substring(3, 5));  29          JSONObject holder = new JSONObject();  30          JSONArray array = new JSONArray();  31          JSONObject data = new JSONObject();  32          try {  33              holder.put("version", "1.1.0");  34              holder.put("host", "maps.google.com");  35              holder.put("address_language", "zh_CN");  36              holder.put("request_address", true);  37              holder.put("radio_type", "gsm");  38              holder.put("carrier", "HTC");  39              data.put("cell_id", cid);  40              data.put("location_area_code", lac);  41              data.put("mobile_countyr_code", mcc);  42              data.put("mobile_network_code", mnc);  43              array.put(data);  44              holder.put("cell_towers", array);  45          } catch (JSONException e) {  46              e.printStackTrace();  47          }  48          DefaultHttpClient client = new DefaultHttpClient();  49          HttpPost httpPost = new HttpPost("http://www.google.com/loc/json");  50          StringEntity stringEntity = null;  51          try {  52              stringEntity = new StringEntity(holder.toString());  53          } catch (UnsupportedEncodingException e) {  54              e.printStackTrace();  55          }  56          httpPost.setEntity(stringEntity);  57          HttpResponse httpResponse = null;  58          try {  59              httpResponse = client.execute(httpPost);  60          } catch (ClientProtocolException e) {  61              e.printStackTrace();  62          } catch (IOException e) {  63              e.printStackTrace();  64          }  65          HttpEntity httpEntity = httpResponse.getEntity();  66          InputStream is = null;  67          try {  68              is = httpEntity.getContent();  69          } catch (IllegalStateException e) {  70              e.printStackTrace();  71          } catch (IOException e) {  72              // TODO Auto-generated catch block  73              e.printStackTrace();  74          }  75          InputStreamReader isr = new InputStreamReader(is);  76          BufferedReader reader = new BufferedReader(isr);  77          StringBuffer stringBuffer = new StringBuffer();  78          try {  79              String result = "";  80              while ((result = reader.readLine()) != null) {  81                  stringBuffer.append(result);  82              }  83          } catch (IOException e) {  84              e.printStackTrace();  85          }  86          txtInfo.setText(stringBuffer.toString());  87      }  88 }

第二种通过严格的GPS来定位，引用文章地址：http://www.cnblogs.com/wisekingokok/archive/2011/09/06/2168479.html，这里只引用代码

  1 public class MainActivity extends Activity {  2      private LocationManager locationManager;  3      private GpsStatus gpsstatus;  4      @Override  5      public void onCreate(Bundle savedInstanceState) {  6         super.onCreate(savedInstanceState);  7         setContentView(R.layout.main);  8           9         //获取到LocationManager对象 10         locationManager = (LocationManager) getSystemService(LOCATION_SERVICE); 11          12         //根据设置的Criteria对象，获取最符合此标准的provider对象 13         String currentProvider = locationManager.getProvider(LocationManager.GPS_PROVIDER).getName(); 14          15         //根据当前provider对象获取最后一次位置信息 16         Location currentLocation = locationManager.getLastKnownLocation(currentProvider); 17         //如果位置信息为null，则请求更新位置信息 18         if(currentLocation == null){ 19             locationManager.requestLocationUpdates(currentProvider, 0, 0, locationListener); 20         } 21         //增加GPS状态监听器 22         locationManager.addGpsStatusListener(gpsListener); 23          24         //直到获得最后一次位置信息为止，如果未获得最后一次位置信息，则显示默认经纬度 25         //每隔10秒获取一次位置信息 26         while(true){ 27             currentLocation = locationManager.getLastKnownLocation(currentProvider); 28             if(currentLocation != null){ 29                 Log.d("Location", "Latitude: " + currentLocation.getLatitude()); 30                 Log.d("Location", "location: " + currentLocation.getLongitude()); 31                 break; 32             }else{ 33                 Log.d("Location", "Latitude: " + 0); 34                 Log.d("Location", "location: " + 0); 35             } 36             try { 37                 Thread.sleep(10000); 38             } catch (InterruptedException e) { 39                  Log.e("Location", e.getMessage()); 40             } 41         } 42      } 43       44      private GpsStatus.Listener gpsListener = new GpsStatus.Listener(){ 45          //GPS状态发生变化时触发 46          @Override 47          public void onGpsStatusChanged(int event) { 48              //获取当前状态 49              gpsstatus=locationManager.getGpsStatus(null); 50              switch(event){ 51                  //第一次定位时的事件 52                  case GpsStatus.GPS_EVENT_FIRST_FIX: 53                      break; 54                  //开始定位的事件 55                  case GpsStatus.GPS_EVENT_STARTED: 56                      break; 57                  //发送GPS卫星状态事件 58                  case GpsStatus.GPS_EVENT_SATELLITE_STATUS: 59                      Toast.makeText(MainActivity.this, "GPS_EVENT_SATELLITE_STATUS", Toast.LENGTH_SHORT).show(); 60                      Iterable<GpsSatellite> allSatellites = gpsstatus.getSatellites();    61                      Iterator<GpsSatellite> it=allSatellites.iterator();  62                      int count = 0; 63                      while(it.hasNext())    64                      {    65                          count++; 66                      } 67                      Toast.makeText(MainActivity.this, "Satellite Count:" + count, Toast.LENGTH_SHORT).show(); 68                      break; 69                  //停止定位事件 70                  case GpsStatus.GPS_EVENT_STOPPED: 71                      Log.d("Location", "GPS_EVENT_STOPPED"); 72                      break; 73              } 74          } 75      }; 76       77       78      //创建位置监听器 79      private LocationListener locationListener = new LocationListener(){ 80          //位置发生改变时调用 81          @Override 82          public void onLocationChanged(Location location) { 83              Log.d("Location", "onLocationChanged"); 84          } 85   86          //provider失效时调用 87          @Override 88          public void onProviderDisabled(String provider) { 89              Log.d("Location", "onProviderDisabled"); 90          } 91   92          //provider启用时调用 93          @Override 94          public void onProviderEnabled(String provider) { 95              Log.d("Location", "onProviderEnabled"); 96          } 97   98          //状态改变时调用 99          @Override100          public void onStatusChanged(String provider, int status, Bundle extras) {101              Log.d("Location", "onStatusChanged");102          }103      };104  }

第三种主要是通过网络的方式来定位，引用文章地址：http://www.cnblogs.com/wisekingokok/archive/2011/09/05/2167755.html，这里只写代码

  1 package com.test;  2    3  import java.io.IOException;  4  import java.util.List;  5    6  import android.app.Activity;  7  import android.location.Address;  8  import android.location.Criteria;  9  import android.location.Geocoder; 10  import android.location.Location; 11  import android.location.LocationListener; 12  import android.location.LocationManager; 13  import android.os.Bundle; 14  import android.util.Log; 15  import android.widget.Toast; 16   17  public class MainActivity extends Activity { 18      @Override 19      public void onCreate(Bundle savedInstanceState) { 20         super.onCreate(savedInstanceState); 21         setContentView(R.layout.main); 22          23         //获取到LocationManager对象 24         LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE); 25         //创建一个Criteria对象 26         Criteria criteria = new Criteria(); 27         //设置粗略精确度 28         criteria.setAccuracy(Criteria.ACCURACY_COARSE); 29         //设置是否需要返回海拔信息 30         criteria.setAltitudeRequired(false); 31         //设置是否需要返回方位信息 32         criteria.setBearingRequired(false); 33         //设置是否允许付费服务 34         criteria.setCostAllowed(true); 35         //设置电量消耗等级 36         criteria.setPowerRequirement(Criteria.POWER_HIGH); 37         //设置是否需要返回速度信息 38         criteria.setSpeedRequired(false); 39   40         //根据设置的Criteria对象，获取最符合此标准的provider对象 41         String currentProvider = locationManager.getBestProvider(criteria, true); 42         Log.d("Location", "currentProvider: " + currentProvider); 43         //根据当前provider对象获取最后一次位置信息 44         Location currentLocation = locationManager.getLastKnownLocation(currentProvider); 45         //如果位置信息为null，则请求更新位置信息 46         if(currentLocation == null){ 47             locationManager.requestLocationUpdates(currentProvider, 0, 0, locationListener); 48         } 49         //直到获得最后一次位置信息为止，如果未获得最后一次位置信息，则显示默认经纬度 50         //每隔10秒获取一次位置信息 51         while(true){ 52             currentLocation = locationManager.getLastKnownLocation(currentProvider); 53             if(currentLocation != null){ 54                 Log.d("Location", "Latitude: " + currentLocation.getLatitude()); 55                 Log.d("Location", "location: " + currentLocation.getLongitude()); 56                 break; 57             }else{ 58                 Log.d("Location", "Latitude: " + 0); 59                 Log.d("Location", "location: " + 0); 60             } 61             try { 62                 Thread.sleep(10000); 63             } catch (InterruptedException e) { 64                  Log.e("Location", e.getMessage()); 65             } 66         } 67          68         //解析地址并显示 69         Geocoder geoCoder = new Geocoder(this); 70         try { 71             int latitude = (int) currentLocation.getLatitude(); 72             int longitude = (int) currentLocation.getLongitude(); 73             List<Address> list = geoCoder.getFromLocation(latitude, longitude, 2); 74             for(int i=0; i<list.size(); i++){ 75                 Address address = list.get(i);  76                 Toast.makeText(MainActivity.this, address.getCountryName() + address.getAdminArea() + address.getFeatureName(), Toast.LENGTH_LONG).show(); 77             } 78         } catch (IOException e) { 79             Toast.makeText(MainActivity.this,e.getMessage(), Toast.LENGTH_LONG).show(); 80         } 81          82      } 83       84      //创建位置监听器 85      private LocationListener locationListener = new LocationListener(){ 86          //位置发生改变时调用 87          @Override 88          public void onLocationChanged(Location location) { 89              Log.d("Location", "onLocationChanged"); 90              Log.d("Location", "onLocationChanged Latitude" + location.getLatitude()); 91                   Log.d("Location", "onLocationChanged location" + location.getLongitude()); 92          } 93   94          //provider失效时调用 95          @Override 96          public void onProviderDisabled(String provider) { 97              Log.d("Location", "onProviderDisabled"); 98          } 99  100          //provider启用时调用101          @Override102          public void onProviderEnabled(String provider) {103              Log.d("Location", "onProviderEnabled");104          }105  106          //状态改变时调用107          @Override108          public void onStatusChanged(String provider, int status, Bundle extras) {109              Log.d("Location", "onStatusChanged");110          }111      };112  }

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