3

我是通讯方面的新手。只是试图定期从 android 应用程序中获取一些数据。但不知何故它不工作.. 写了一个 php 脚本我需要添加更多的东西..？我是否需要在 androidmanifest 中添加任何权限..？还提供了我的 android 应用程序代码。当我单击获取我的位置时，它会强制关闭。

PHP 脚本

<?php
echo 'Hello, world!';
$json = $_GET['jsonpost'];//get the post you sent...
$data = json_decode($json); //decode the json formatted string...
print_r($data);
$id = $data->id;
$devid = $data->devid;
$latitude = $data->latitude;
$longitude = $data->longitude;
$service = $data->service;
$con = mysql_connect("","","");
if (!$con)
  {
  die('Could not connect: ' . mysql_error());
  }
mysql_select_db("a5234826_ul", $con);
$devid = $_POST['devid']; 
$latitude = $_POST['latitude'];
$longitude = $_POST['longitude'];
echo "devid" +$devid;
echo "latitude" + $latitude;
echo "longitude" + $longitude; 
$sql = "INSERT INTO  `a5234826_ul`.`locations` (
`id` ,
`devid` ,
`latitude` ,
`longitude` ,
`service`
)
VALUES (
NULL ,  '$devid',  '$latitude',  '$longitude', '$service'  
)";
if (!mysql_query($sql,$con))
  {
  die('Error: ' . mysql_error());
  }
mysql_close($con);
echo json_encode($variable);

?>

定位服务.java

@Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}

public int onStartCommand(Intent intent, int flags, int startId) {
PowerManager pm = (PowerManager)getSystemService(Context.POWER_SERVICE);
wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "lock");
wl.acquire();
context = this;
final String who = intent.getStringExtra("who");
final LocationManager locMan = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
final LocationListener listener = new LocationListener(){

    // start location changed

    public void onLocationChanged(Location loc) {
        double latitude = loc.getLatitude();
        double longitude = loc.getLongitude();


        // Create a new HttpClient and Post Header
        HttpClient httpclient = new DefaultHttpClient();
        HttpPost httppost = new HttpPost("http://.../serverFile.php");
        JSONObject json = new JSONObject();


        TelephonyManager telephonyManager = (TelephonyManager)context.getSystemService(Context.TELEPHONY_SERVICE);
        String devid = telephonyManager.getDeviceId();

        String postData = "{\"request\":{\"type\":\"locationinfo\"},\"userinfo\":{\"latitude\":\""+latitude+"\",\"longitude\":\""+longitude+"\",\"devid\":\""+devid+"\"}}";




        try {  

            json.put("longitude", longitude);//place each of the strings as you did in postData method
            json.put("latitude", latitude);

            json.put("devid", devid);

            JSONArray postjson=new JSONArray();
            postjson.put(json);
            httppost.setHeader("json",json.toString());
            httppost.getParams().setParameter("jsonpost",postjson);     
            HttpResponse response = httpclient.execute(httppost);

            // for JSON retrieval:
            if(response != null)
            { 
            InputStream is = response.getEntity().getContent();
        BufferedReader reader = new BufferedReader(new InputStreamReader(is));
        StringBuilder sb = new StringBuilder();
        String line = null;
        try {
            while ((line = reader.readLine()) != null) {
            sb.append(line + "\n");
            }
            } catch (IOException e) {
            e.printStackTrace();
            } finally {
            try {
            is.close();
            } catch (IOException e) {
            e.printStackTrace();
            }
            }
            String jsonStr = sb.toString(); //take the string you built place in a string



            JSONObject rec = new JSONObject(jsonStr);
            String longitudecord = rec.getString("lon");
                String latitudecord = rec.getString("lat");
            // ...
            }
            }catch (ClientProtocolException e) {
            // TODO Auto-generated catch block
            } catch (IOException e) {
                // TODO Auto-generated catch block
                } catch (JSONException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }




        if (who.equals("me")){
            Intent i = new Intent(context.getPackageName()+".LocationReceived");
            i.putExtra("lat", String.valueOf(latitude));
            i.putExtra("longitude", String.valueOf(longitude));
            i.putExtra("accuracy", String.valueOf(loc.getAccuracy()));
            context.sendBroadcast(i);
            Notification notif = new Notification();
            NotificationManager nm = (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE);
            notif.tickerText = "Location Found!";
            notif.icon = R.drawable.ic_launcher;
            notif.flags = Notification.FLAG_AUTO_CANCEL;
            notif.when = System.currentTimeMillis();
            Intent notificationIntent = new Intent(context, TestLocatorActivity.class);
            notificationIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            notificationIntent.putExtra("lat", String.valueOf(latitude));
            notificationIntent.putExtra("longitude", String.valueOf(longitude));
            notificationIntent.putExtra("accuracy", String.valueOf(loc.getAccuracy()));
            PendingIntent contentIntent = PendingIntent.getActivity(context, 0, notificationIntent, 0);
            notif.setLatestEventInfo(context, "Location Found!", "Click to open.", contentIntent);
            nm.notify(0, notif);
        } else {
            SmsManager smsMan = SmsManager.getDefault();
            smsMan.sendTextMessage(who, null, "http://maps.google.com/maps?q=loc:"+latitude+","+longitude, null, null);
            smsMan.sendTextMessage(who, null, "Latitude: "+latitude+"\nLongitude: "+longitude, null, null);
        }
        locMan.removeUpdates(this);
        try {
            wl.release();
        } catch (Exception e){
            e.printStackTrace();
        }
        stopSelf();
    }

    public void onProviderDisabled(String provider){


    }

    public void onProviderEnabled(String provider) {
        //Log.i(tag, "GPS IS ON");
    }

    public void onStatusChanged(String provider, int status, Bundle extras){
        switch(status) {
            case LocationProvider.OUT_OF_SERVICE:
            case LocationProvider.TEMPORARILY_UNAVAILABLE:
            case LocationProvider.AVAILABLE:
                break;
        }
    } };


locMan.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, listener);
locMan.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, listener);

return 2;
}

}

我试图从 LocationService 类中获取纬度和经度值到 Post 类的另一件事是 Post 类中的代码正确..请帮助我..

4

4 回答 4

3

就像@Vivek Kumar Srivastava 所说。

当您使用 postData 时，您以 Json 格式发送它，所以在您的 php 端，您需要实际解码它......

代码是这样的。

像这样在你的android代码中创建一个JSON对象可能会更好......

如前所述Vivek Kumar Srivastava：

当您使用 postData 时，您以 Json 格式发送它，因此在您的 php 端，您需要实际解码它。

最好在您的 android 代码中创建一个 JSON 对象，如下所示。

private postData() throws JSONException{  
// Create a new HttpClient and Post Header
HttpClient httpclient = new DefaultHttpClient();
HttpGet httppost = new HttpGet("http://.../serverFile.php");
JSONObject json = new JSONObject();

try {           
    json.put("longitude", longitude);//place each of the strings as you did in postData method
    json.put("latitude", latitude);
    json.put("service", service);
    json.put("devid", devid);

    JSONArray postjson=new JSONArray();
    postjson.put(json);
    post.setHeader("json",json.toString());
    post.getParams().setParameter("jsonpost",postjson);     
    HttpResponse response = httpclient.execute(httppost);

    // for JSON retrieval:
    if(response != null)
    { 
    InputStream is = response.getEntity().getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
StringBuilder sb = new StringBuilder();
String line = null;
try {
    while ((line = reader.readLine()) != null) {
    sb.append(line + "\n");
    }
    } catch (IOException e) {
    e.printStackTrace();
    } finally {
    try {
    is.close();
    } catch (IOException e) {
    e.printStackTrace();
    }
    }
    String jsonStr = sb.toString(); //take the string you built place in a string



    JSONObject rec = new JSONObject(jsonStr);
    String longitudecord = rec.getString("lon");
        String latitudecord = rec.getString("lat");
    // ...
    }
    }catch (ClientProtocolException e) {
    // TODO Auto-generated catch block
    } catch (IOException e) {
        // TODO Auto-generated catch block
        }
    }

现在你的php代码...

$json = $_SERVER['HTTP_JSON'];//get the post you sent...
$data = json_decode($json); //decode the json formatted string...
$longitude = $data->longitude;
$latitude = $data->latitude;
$service = $data->service;
$devid = $data->devid;

And then continue with your sql from there on. 如果您想将它们读回 Android，您将它们编码为 JSON，如上面的代码所示...

于 2012-05-03T04:17:23.870 回答
1

您的 php 代码有问题，因为在 Android 端数据以 json 格式发送，例如

 String postData = "{\"request\":{\"type\":\"locationinfo\"},\"userinfo\":{\"latitude\":\""+latitude+"\",\"longitude\":\""+longitude+"\",\"deviceid\":\""+deviceid+"\"}}"

但是您直接尝试在不解码json的情况下获取数据。

所以需要先解码你的json然后按特定顺序获取数据

有关更多详细信息，请参阅下面的链接

http://php.net/manual/en/function.json-decode.php

于 2012-04-25T07:12:06.547 回答
1

我建议您制作一个简单的脚本，以确保您确实可以正确访问数据库。您可以在浏览器中运行脚本，这样就可以排除对数据库的任何连接/访问问题：

<?php
mysql_connect("localhost","user","pass");
mysql_select_db("dbName");
$sql=mysql_query("select * from TABLENAME where COLUMNNAME like 'searchparameter'");
while($row=mysql_fetch_assoc($sql))
$output[]=$row;
print(json_encode($output));
mysql_close();
?>
于 2012-05-03T04:25:38.243 回答
0

我没有看到任何接受POST数据的 PHP 代码。我编写了类似的应用程序，将数据发送到服务器并将其记录到数据库中。我通常有一些脚本来接受POST数据并使用其中的值。您必须使用POSTAndroid SDK 中的方法将数据发送到 URL。这比使用JSONPHP 端发送数据然后对其进行解码更容易。如果我需要从服务器接收数据，我会返回值JSON，然后使用 SDK 在 Android 中对其进行解码。

于 2012-05-03T19:20:53.120 回答