Question

我知道在SO中多次询问此问题，并且我已尝试关注20个网页内容。 page 1 page 2 page 3 page 4 等等页面...

基本上我的代码source是Androidhive.info

我的问题是 - 在log cat中它显示的位置，但它没有保存在我的数据库中..

我在服务器上有一个php文件，我在按钮点击时通过 httppost 调用它。我的座右铭是

1.单击按钮，它应发送位置（此任务已完成）

2.App应该在后台运行并按时间间隔发送位置详细信息（任务待定）

正如SO I扩展服务所示，但我没有在这里使用任何警报管理器或作业调度程序

这让我的代码变得笨拙..

所以 我的问题是 应该在onLocationchanged方法中编写什么代码，以便每当位置发生变化时它都会向服务器发送数据（程序将每n分钟运行一次）

Code snippets ::

1.GPSTracker.java

public class GPSTracker extends  Service implements LocationListener
{
statements;
}

2. GPSTracker.java中的一部分

public void onLocationChanged(Location location)
{
    latitude = location.getLatitude();
    longitude = location.getLongitude();
    locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,1000,0, this); 
    Log.e("onLocationChanged",Double.toString(latitude));
    Log.e("onLocationChanged",Double.toString(longitude));
}

3.MainActivity.java

btnShowLocation.setOnClickListener(new View.OnClickListener()
{
    @Override
    public void onClick(View arg0)
    {
        new LongOperation().execute();
    }
}

4.MainActivity.java

private class LongOperation  extends AsyncTask<String, Void, Void>
{
protected void onPreExecute()
{
}
 protected Void doInBackground(String... urls)
        {
            ArrayList<NameValuePair> paramss = new ArrayList<NameValuePair>();
            paramss.add(new BasicNameValuePair("latti", latti));
            paramss.add(new BasicNameValuePair("longi", longi));

            try
            {
                HttpClient httpclient = new DefaultHttpClient();
                HttpPost httppost = new HttpPost("http:///insertData.php");
                httppost.setEntity(new UrlEncodedFormEntity(paramss));
                HttpResponse response = httpclient.execute(httppost);
                HttpEntity entity = response.getEntity();
                is = entity.getContent();
                Log.e("pass 1", "connection success ");
            }
            catch(Exception e)
            {
                Log.e("Fail 1", e.toString());
                Toast.makeText(getApplicationContext(), "Invalid IP Address",
                        Toast.LENGTH_LONG).show();
            }

            try
            {
                BufferedReader reader = new BufferedReader
                        (new InputStreamReader(is,"iso-8859-1"),8);
                StringBuilder sb = new StringBuilder();
                while ((line = reader.readLine()) != null)
                {
                    sb.append(line + "\n");
                }
                is.close();
                result = sb.toString();
                Log.e("pass 2", "connection success ");
            }
            catch(Exception e)
            {
                Log.e("Fail 2", e.toString());
            }

            try
            {
                JSONObject json_data = new JSONObject(result);
                code=(json_data.getInt("code"));


                if(code==1)
                {
                    FLAG=1;
                }
                else
                {
                    FLAG=0;
                }
            }

            catch(Exception e)
            {
                Log.e("Fail 3", e.toString());
            }
            return null;
          }
        }

任何建议都会有很大的帮助..

请告知是否需要更多代码段

我在Android studio中正在做这个项目

LOG ::

02-02 10:52:22.180  15792-15792/com.example.mylocation E/onLocationChanged﹕ 17.3732771
02-02 10:52:22.180  15792-15792/com.example.mylocation E/onLocationChanged﹕ 78.5046526
02-02 10:52:24.050  15792-16248/com.example.mylocation E/pass 1﹕ connection success
02-02 10:52:24.070  15792-16248/com.example.mylocation E/pass 2﹕ connection success
02-02 10:53:22.130  15792-15792/com.example.mylocation E/onLocationChanged﹕ 17.3733159
02-02 10:53:22.130  15792-15792/com.example.mylocation E/onLocationChanged﹕ 78.5045958
02-02 10:54:22.070  15792-15792/com.example.mylocation E/onLocationChanged﹕ 17.3733133
02-02 10:54:22.070  15792-15792/com.example.mylocation E/onLocationChanged﹕ 78.5046106
02-02 10:55:22.120  15792-15792/com.example.mylocation E/onLocationChanged﹕ 17.373314
02-02 10:55:22.120  15792-15792/com.example.mylocation E/onLocationChanged﹕ 78.5046077

它每分钟都在给我一个日志中的位置更新..但这个数据不会发送到数据库

我已经在doInBackground（）中写了http调用，所以控件没有传递给那个方法......它永远不会被再次调用..

编辑1

当我使用待定意图时，即使我的GPS设置已启用，此屏幕也是输出

添加了代码::

public Location getLocation()
    {
        try
        {
            intent = new Intent("com.example.dotweb.mylocation");
            pi = PendingIntent.getBroadcast(getApplicationContext(),0, intent, 0);

            locationManager = (LocationManager) mContext

            isGPSEnabled = locationManager
                    .isProviderEnabled(LocationManager.GPS_PROVIDER);

            isNetworkEnabled = locationManager
                    .isProviderEnabled(LocationManager.NETWORK_PROVIDER);

            if (!isGPSEnabled && !isNetworkEnabled) {
            } else {
                this.canGetLocation = true;
                if (isNetworkEnabled)
                {
                    locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER,60000,0, this);
                    Log.d("Network", "Network");
                    if (locationManager != null)
                    {
                        location = locationManager
                                .getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
                        if (location != null) {
                            latitude = location.getLatitude();
                            longitude = location.getLongitude();
                        }
                    }
                }
                if (isGPSEnabled) {
                    if (location == null)
                    {
                        locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,60000,0, this);
                        Log.d("GPS Enabled", "GPS Enabled");
                        if (locationManager != null) {
                            location = locationManager
                                    .getLastKnownLocation(LocationManager.GPS_PROVIDER);
                            if (location != null) {
                                latitude = location.getLatitude();
                                longitude = location.getLongitude();
                            }
                        }
                    }
                }
            }

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

        return location;
    }

locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,60000,0, this); 并且locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,60000,0, pi);正在做这个伎俩

output

Answer 1

onLocationChanged内容。

@Override
    public void onLocationChanged(Location location)
    {
        latitude = location.getLatitude();
        longitude = location.getLongitude();
        new LongOperation(latitude, longitude).execute();         
    }

LongOperation是AsyncTask class，其http call

               try {
                        HttpClient httpclient = new DefaultHttpClient();
                        HttpPost httppost = new HttpPost("www.abc.com/kkk/ppp/nnn/update.php");

                        httppost.setEntity(new UrlEncodedFormEntity(paramss));
                        HttpResponse response = httpclient.execute(httppost);
                        HttpEntity entity = response.getEntity();
                        is = entity.getContent();
                        Log.e("pass 1", "connection success ");
                    } catch (Exception e) {
                        Log.e("Fail 1", e.toString());
                    }

什么应该是onLocationChanged内容

1 个答案: