我正在编写一个发射器应用程序，它会定期向Web服务发送GPS坐标。这是代码：
package online.veda.transafe_tx;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Color;
import android.location.Location;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.Ringtone;
import android.media.RingtoneManager;
import android.media.ToneGenerator;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.SystemClock;
import android.provider.Settings;
import android.support.annotation.NonNull;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;
import org.ksoap2.SoapEnvelope;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapPrimitive;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.HttpTransportSE;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
public class trip extends AppCompatActivity implements GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener, LocationListener {
public String tripID;
private GoogleApiClient mGoogleApiClient;
int sentData;
ArrayList<LocationData> locationUpdates;
TextView sentDataTextView;
TextView bufferedDataTextView;
void PlayAlertIfNeeded()
{
if(locationUpdates.size()>=5)
{
ToneGenerator toneGen1 = new ToneGenerator(AudioManager.STREAM_ALARM, 100);
toneGen1.startTone(ToneGenerator.TONE_CDMA_ABBR_ALERT,500);
toneGen1.startTone(ToneGenerator.TONE_CDMA_ABBR_ALERT,1000);
}
}
void CreateOKDialog( String message)
{
AlertDialog.Builder builder = new AlertDialog.Builder(trip.this);
builder.setTitle(message);
builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
startActivity(new Intent(trip.this, login.class));
dialog.dismiss();
}
});
AlertDialog alert = builder.create();
alert.show();
}
void SetSentBufferedData()
{
runOnUiThread(new Runnable() {
@Override
public void run()
{
sentDataTextView.setText(Integer.toString(sentData));
bufferedDataTextView.setText(Integer.toString(locationUpdates.size()));
if(locationUpdates.size()>0) {
bufferedDataTextView.setTextColor(Color.parseColor("#ff0000"));
}
else
bufferedDataTextView.setTextColor(Color.parseColor("#ffa500"));
}
});
}
public void EndTrip(View v)
{
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Confirm");
builder.setMessage("Are you sure?");
builder.setPositiveButton("YES", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, trip.this);
new EndTrip().execute();
dialog.dismiss();
}
});
builder.setNegativeButton("NO", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
AlertDialog alert = builder.create();
alert.show();
}
public void CancelTrip(View v)
{
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Confirm");
builder.setMessage("Are you sure?");
builder.setPositiveButton("YES", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, trip.this);
new CancelTrip().execute();
dialog.dismiss();
}
});
builder.setNegativeButton("NO", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
AlertDialog alert = builder.create();
alert.show();
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_trip);
locationUpdates = new ArrayList<LocationData>();
tripID = getIntent().getStringExtra("TripID");
sentDataTextView = (TextView) findViewById(R.id.TextView_SentData);
bufferedDataTextView = (TextView) findViewById(R.id.TextView_BufferedData);
((TextView) findViewById(R.id.TextView_TripID)).setText(getIntent().getStringExtra("TripID"));
((TextView) findViewById(R.id.TextView_BusNo)).setText(getIntent().getStringExtra("BusNo"));
((TextView) findViewById(R.id.TextView_Driver)).setText(getIntent().getStringExtra("Driver"));
((TextView) findViewById(R.id.TextView_TripStartTime)).setText(getIntent().getStringExtra("TripStartTime"));
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this).addApi(LocationServices.API)
.build();
mGoogleApiClient.connect();
}
@Override
public void onConnected(Bundle connectionHint) {
LocationRequest mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(10000);
mLocationRequest.setFastestInterval(10000);
mLocationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
try {
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
}
catch(SecurityException ex)
{
}
}
@Override
public void onConnectionSuspended(int cause) {
Log.d("Akshay", "Connection to Google API suspended");
}
@Override
public void onLocationChanged(Location location) {
LocationData locationData = new LocationData();
locationData.TripID = tripID;
locationData.LocationTime=new SimpleDateFormat("yyyyMMdd-HHmmss").format(Calendar.getInstance().getTime()).toString();
locationData.Latitude=location.getLatitude();
locationData.Longitude=location.getLongitude();
new InsertTripDetails(locationData).execute();
}
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
}
private class InsertTripDetails extends AsyncTask<String, Void, Void>
{
LocationData LD;
InsertTripDetails(LocationData ld)
{
LD=ld;
}
@Override
protected Void doInBackground(String... params)
{
locationUpdates.add(LD);
for (int i=locationUpdates.size()-1;i>=0;i--)
{
try {
SoapObject request = new SoapObject("http://tempuri.org/", "InsertTripDetail");
request.addProperty(MyUtils.CreateProp("TripID", tripID, String.class));
request.addProperty(MyUtils.CreateProp("LocationTime", new SimpleDateFormat("yyyyMMdd-HHmmss").format(Calendar.getInstance().getTime()).toString(), String.class));
request.addProperty(MyUtils.CreateProp("Latitude", LD.Latitude, String.class));
request.addProperty(MyUtils.CreateProp("Longitude", LD.Longitude, String.class));
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11) {{
dotNet = true;
}};
MarshalDouble md = new MarshalDouble();
md.register(envelope);
envelope.setOutputSoapObject(request);
HttpTransportSE androidHttpTransport = new HttpTransportSE("http://veda.online/default.asmx");
androidHttpTransport.call("http://tempuri.org/InsertTripDetail", envelope);
SoapPrimitive response = (SoapPrimitive) envelope.getResponse();
locationUpdates.remove(i);
sentData++;
}
catch (Exception ex) {
System.out.print(ex.getMessage());
}
finally {
SetSentBufferedData();
}
}
PlayAlertIfNeeded();
return null;
}
@Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
}
}
private class EndTrip extends AsyncTask<String, Void, Void>
{
boolean isError=false;
@Override
protected Void doInBackground(String... params) {
try {
SoapObject request = new SoapObject("http://tempuri.org/", "UpdateTrip");
request.addProperty(MyUtils.CreateProp("TripID",tripID,String.class));
request.addProperty(MyUtils.CreateProp("TripEndTime",new SimpleDateFormat("yyyyMMdd-HHmmss").format(Calendar.getInstance().getTime()).toString(),String.class));
request.addProperty(MyUtils.CreateProp("TripStatus","0",String.class));
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11) {{dotNet=true;}};
envelope.setOutputSoapObject(request);
HttpTransportSE androidHttpTransport = new HttpTransportSE("http://veda.online/default.asmx");
androidHttpTransport.call("http://tempuri.org/UpdateTrip", envelope);
SoapObject response = (SoapObject) envelope.getResponse();
}
catch (Exception e)
{
isError=true;
}
return null;
}
@Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
if(isError)
CreateOKDialog("Error ending trip");
else {
CreateOKDialog("Trip ended");
}
}
}
private class CancelTrip extends AsyncTask<String, Void, Void>
{
boolean isError=false;
@Override
protected Void doInBackground(String... params) {
try {
SoapObject request = new SoapObject("http://tempuri.org/", "UpdateTrip");
request.addProperty(MyUtils.CreateProp("TripID",tripID,String.class));
request.addProperty(MyUtils.CreateProp("TripEndTime",new SimpleDateFormat("yyyyMMdd-HHmmss").format(Calendar.getInstance().getTime()).toString(),String.class));
request.addProperty(MyUtils.CreateProp("TripStatus","-1",String.class));
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11) {{dotNet=true;}};
envelope.setOutputSoapObject(request);
HttpTransportSE androidHttpTransport = new HttpTransportSE("http://veda.online/default.asmx");
androidHttpTransport.call("http://tempuri.org/UpdateTrip", envelope);
SoapObject response = (SoapObject) envelope.getResponse();
}
catch (Exception e)
{
isError=true;
}
return null;
}
@Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
if(isError)
CreateOKDialog("Error cancelling trip");
else {
CreateOKDialog("Trip cancelled");
}
}
}
}
最初，我认为我只会将它用于传输坐标，但我想改进它并在旅程完成时显示路径。任何人都可以帮我指出正确的方向。