如何在房屋內獲取Android GPS位置

Question

我需要獲取某人在住宅內時的GPS位置。

GPS在房子內不起作用，但我聽到有人解釋說，在Android中，您應該首先檢查GPS是否可用。如果不是，下一步就是根據附近的無線網絡對該人進行本地化。

我對此很新，我計劃開發一個簡單的鈦應用程序。我的問題是： 當gps不可用時，您可以基於無線網絡本地化某人嗎？我能得到建築物內人員的位置嗎？

Answer 1

你問的最佳供應商的位置提供，如果GPS不可用，您將從CELLID（移動桅杆）或無線網絡得到的位置，看this和相關計算器question

Answer 2

似乎是一個良好的開端，我希望這個代碼可以幫助：

try { 
      gps_enabled = locManager.isProviderEnabled(LocationManager.GPS_PROVIDER); 
     } catch (Exception ex) { 
     } 
     try { 
      network_enabled = locManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER); 
     } catch (Exception ex) { 
     } 

     // don't start listeners if no provider is enabled 
     if (!gps_enabled && !network_enabled) { 
      AlertDialog.Builder builder = new Builder(this); 
      builder.setTitle("Attention!"); 
      builder.setMessage("Sorry, location is not determined. Please enable location providers"); 
      builder.create().show(); 
     } 

     if (gps_enabled) { 
      locManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locListener); 
     } 
     if (network_enabled) { 
      locManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locListener); 
     } 

從這裏：http://www.hrupin.com/2011/04/android-gps-using-how-to-get-current-location-example

Answer 3

一種選擇是天棚。這是他們的SDK的鏈接。它是android兼容的。這不會像GPS一樣準確，但它會讓你至少在大部分時間內在正確的建築物內。

http://www.skyhookwireless.com/location-technology/sdk.php

Answer 4

，請撥打以下任何你想要得到CELLID定位CELLID功能。隨着GPS這不會是準確

public void cellID() 
{ 
    TelephonyManager telephonyManager = (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE); 


    GsmCellLocation cellLocation = (GsmCellLocation) telephonyManager.getCellLocation();  
     int cid = cellLocation.getCid(); 
     int lac = cellLocation.getLac(); 
     SimpleDateFormat sdfDateTime = new SimpleDateFormat(
       "yyyy-MM-dd HH:mm:ss"); 
     datetimeCellID = sdfDateTime.format(new Date()); 
     String cell_Id=String.valueOf(cid); 
     String gsm_Loc_Area_Code=String.valueOf(lac); 
    // Toast.makeText(getBaseContext(),"cellid="+cell_Id+"\nGsm Location Area Code:"+gsm_Loc_Area_Code,Toast.LENGTH_LONG).show(); 

     if(RqsLocation(cid, lac)) 
     { 
      TelephonyManager tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE); 
      imeiCellID = tm.getDeviceId(); 
      latitude_cellID=String.valueOf((float)myLatitude/1000000); 
      longitude_cellID=String.valueOf((float)myLongitude/1000000); 
     // Toast.makeText(getBaseContext(),"Lat:"+latitude_cellID+"Long:"+longitude_cellID,Toast.LENGTH_LONG).show(); 


     }//if 
     else 
     { 
      Toast.makeText(getBaseContext(),"CellID : Can't find Location",Toast.LENGTH_LONG).show(); 
     }//else 
    } 

} // CELLID

private Boolean RqsLocation(int cid, int lac) 
    { 
     //Toast.makeText(getBaseContext(),"inReqloc",Toast.LENGTH_LONG).show(); 
    Boolean result = false; 
    String urlmmap = "http://www.google.com/glm/mmap"; 

     try { 
      URL url = new URL(urlmmap); 
      URLConnection conn = url.openConnection(); 
      HttpURLConnection httpConn = (HttpURLConnection) conn;  
      httpConn.setRequestMethod("POST"); 
      httpConn.setDoOutput(true); 
      httpConn.setDoInput(true); 
      httpConn.connect(); 
      OutputStream outputStream = httpConn.getOutputStream(); 
      WriteData(outputStream, cid, lac);  
      InputStream inputStream = httpConn.getInputStream(); 
      DataInputStream dataInputStream = new DataInputStream(inputStream); 
      dataInputStream.readShort(); 
      dataInputStream.readByte(); 
      int code = dataInputStream.readInt(); 
      if (code == 0) 
      { 
      myLatitude = dataInputStream.readInt(); 
      myLongitude = dataInputStream.readInt(); 
      result = true; 

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

    return result; 

    } 

    private void WriteData(OutputStream out, int cid, int lac) 
    throws IOException 
    {  
     DataOutputStream dataOutputStream = new DataOutputStream(out); 
     dataOutputStream.writeShort(21); 
     dataOutputStream.writeLong(0); 
     dataOutputStream.writeUTF("en"); 
     dataOutputStream.writeUTF("Android"); 
     dataOutputStream.writeUTF("1.0"); 
     dataOutputStream.writeUTF("Web"); 
     dataOutputStream.writeByte(27); 
     dataOutputStream.writeInt(0); 
     dataOutputStream.writeInt(0); 
     dataOutputStream.writeInt(3); 
     dataOutputStream.writeUTF(""); 
     dataOutputStream.writeInt(cid); 
     dataOutputStream.writeInt(lac);  
     dataOutputStream.writeInt(0); 
     dataOutputStream.writeInt(0); 
     dataOutputStream.writeInt(0); 
     dataOutputStream.writeInt(0); 
     dataOutputStream.flush();  
    }