通過codeigniter從android到mysql發佈數據

Question

我想創建一個獲取我當前位置（緯度和經度）的android應用程序，並且我試圖通過http post發送數據到mysql數據庫，但是我的php端不支持' t似乎收到我發送的數據，並且不會插入到數據庫中。

我使用本地主機，我試圖通過手機瀏覽器訪問鏈接，它工作正常。

Geolocation.java

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.content_main); 

    textlat = (TextView) findViewById(R.id.textlat); 
    textlong = (TextView) findViewById(R.id.textlong); 

    LocationManager lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE); 
    LocationListener ll = new mylocationlistener(); 
    lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, ll); 

    InputStream is = null; 
    Location lastLocation = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER); 
    if (lastLocation != null) 
    { 
     textlat.setText(Double.toString(lastLocation.getLatitude())); 
     textlong.setText(Double.toString(lastLocation.getLongitude())); 

     double pLong1 = lastLocation.getLongitude(); 
     double pLat1 = lastLocation.getLatitude(); 


     String lat = String.valueOf(pLat1); 
     String lng = String.valueOf(pLong1); 
     ArrayList<NameValuePair> postParameters = new ArrayList<NameValuePair>(); 
     postParameters.add(new BasicNameValuePair("lat", lat)); 
     postParameters.add(new BasicNameValuePair("lng", lng)); 

     try { 
      HttpClient client = new DefaultHttpClient(); 
      String postURL = "http://192.168.254.100/capstone/vehiclemonitoring/coordinates"; 
      HttpPost post = new HttpPost(postURL); 
      UrlEncodedFormEntity ent = new UrlEncodedFormEntity(postParameters); 
      post.setEntity(ent); 
      HttpResponse responsePOST = client.execute(post); 
      HttpEntity resEntity = responsePOST.getEntity(); 
     is = resEntity.getContent(); 

      String msg = "Data entered successfully"; 

      Toast.makeText(getApplicationContext(), msg,Toast.LENGTH_LONG).show(); 
     } catch (Exception e) { 
      e.printStackTrace(); 
     } 

     try { 
      Thread.sleep(5000); 
     } catch (InterruptedException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 

    } 
} 
class mylocationlistener implements LocationListener{ 

    @Override 
    public void onLocationChanged(Location location) { 

       double pLong = location.getLongitude(); 
       double pLat = location.getLatitude(); 


       String lat = String.valueOf(pLat); 
       String lon = String.valueOf(pLong); 
       ArrayList<NameValuePair> postParameters = new ArrayList<NameValuePair>(); 
       postParameters.add(new BasicNameValuePair("lat", lat)); 
       postParameters.add(new BasicNameValuePair("lng", lon)); 

       try { 
        HttpClient client = new DefaultHttpClient(); 
        String postURL = "http://192.168.254.100/capstone/vehiclemonitoring/coordinates"; 
        HttpPost post = new HttpPost(postURL); 
        UrlEncodedFormEntity ent = new UrlEncodedFormEntity(postParameters, HTTP.UTF_8); 
        post.setEntity(ent); 
        HttpResponse responsePOST = client.execute(post); 
        HttpEntity resEntity = responsePOST.getEntity(); 
        if (resEntity != null) { 
         Log.i("RESPONSE", EntityUtils.toString(resEntity)); 
        } 

       } catch (Exception e) { 
        e.printStackTrace(); 
       } 

        textlat.setText(Double.toString(pLat)); 
       textlong.setText(Double.toString(pLong)); 

       try { 
        Thread.sleep(50000); 
       } catch (InterruptedException e) { 
        // TODO Auto-generated catch block 
        e.printStackTrace(); 
       } 

    } 

coordinates.php

function coordinates(){ 
if(isset($_REQUEST['lat']) && isset($_REQUEST['lng'])){ 

    $lat = $_POST['lat']; 
    $lng = $_POST['lng']; 

    echo "OK"; 
}else{ 
echo "not ok"; 
} 
$this->vm_model->insertcoordinates($lat,$lng); 

`

Answer 1

代碼，檢查null太：

<?php 
function coordinates() 
{ 
    if(isset($_REQUEST['lat']) && isset($_REQUEST['lng']) && !empty($_REQUEST['lat']) && !empty($_REQUEST['lng'])) { 
     $lat = $_POST['lat']; 
     $lng = $_POST['lng']; 
     return "OK"; 
    } else { 
     return "not ok"; 
    } 
} 

$data = $this->vm_model->insertcoordinates($lat,$lng); 
return $data; 
?>