I am a new user here and my reputation is not enough to display some images of my app along with my question which would make it more elaborative so unfortunately just asking the question without any images of app
i am using google nexus 4 ..API 18 (android version 4.3) virtual device and had been developing this app which could run on any android device having api 11 or 11+ and have test this app on the real android device (Samsung galaxy S2 lite) but facing some problems which are
1) whenever user will enter any location name in the edit text box and click on the find button in the same activity a marker is drawn on the map below.. it works fine in the virtual device every time but on the android device at this point when ever user clicks on find button application get crash.
2) in the the second activity here i have made a button my location when ever user clicks on it ..it will get the gps coordinates of the device and reverse geocode it and display the location adress in one of the edit text boxes .this also works fine in virtual device .it take a moment to do every thing but in real device it does not display any thing when ever i click on the icon at the top left it shows search using gps but does not display any thing why it is taking too much time here .. so these are the two problems which i am facing on the android device but these are working perfectly on the virtual device..
plzzz help me there i am working on my fyp and get hang here
the code for the problem no 1 is here as follow
package com.example.citytourguide;
import java.io.IOException;
import java.util.List;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
import android.content.Context;
import android.content.Intent;
import android.location.Address;
import android.location.Geocoder;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class TourGuide extends FragmentActivity {
GoogleMap googleMap;
Marker mark;
LatLng latLng;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_tour_guide);
SupportMapFragment supportMapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
googleMap = supportMapFragment.getMap();
Button btn_route=(Button) findViewById(R.id.route);
btn_route.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
startActivity(new Intent(getBaseContext(),ShowPath.class));
}
});
// Getting reference to btn_find of the layout activity_main
Button btn_find = (Button) findViewById(R.id.btn_find);
btn_find.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
EditText loc_name = (EditText) findViewById(R.id.editText1);
String location = loc_name.getText().toString();
if(location.equals("")){
Toast.makeText(getBaseContext(), "Please! Enter Something to Find...", Toast.LENGTH_SHORT).show();
}
else{
ConnectivityManager connMgr = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
boolean isWiFi = networkInfo.getType() == ConnectivityManager.TYPE_WIFI;
if (isWiFi==true)
{
new GeocoderTask().execute(location);
}
else {
Toast.makeText(getBaseContext(), "Ooops! Error In Network Connection...", Toast.LENGTH_LONG).show();
}
}
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.tour_guide, menu);
return true;
}
// An AsyncTask class for accessing the GeoCoding Web Service
protected class GeocoderTask extends AsyncTask<String, Void, List<Address>>{
@Override
protected List<Address> doInBackground(String... locationName) {
// Creating an instance of Geocoder classtry
Geocoder geocoder = new Geocoder(getBaseContext());
List<Address> addresses = null;
try {
// Getting a maximum of 3 Address that matches the input text
addresses = geocoder.getFromLocationName(locationName[0], 3);
} catch (IOException e) {
e.printStackTrace();
}
return addresses;
}
@Override
protected void onPostExecute(List<Address> addresses) {
if(addresses==null || addresses.size()==0){
Toast.makeText(getBaseContext(), "No Location found", Toast.LENGTH_SHORT).show();
}
// Clears all the existing markers on the map
googleMap.clear();
// Adding Markers on Google Map for each matching address
for(int i=0;i<addresses.size();i++){
Address address = (Address) addresses.get(i);
// Creating an instance of GeoPoint, to display in Google Map
latLng = new LatLng(address.getLatitude(), address.getLongitude());
String addressText = String.format("%s, %s", address.getMaxAddressLineIndex() > 0 ? address.getAddressLine(0) : "",address.getCountryName());
// Showing the marker on the Map
Marker mark =googleMap.addMarker(new MarkerOptions().position(latLng).title(addressText));
mark.showInfoWindow(); // displaying title on the marker
// Locate the first location
if(i==0)
googleMap.animateCamera(CameraUpdateFactory.newLatLng(latLng));
}
}
}
}
this is the file where i have access the location
package com.example.citytourguide;
import java.io.IOException;
import java.util.List;
import com.google.android.gms.maps.model.LatLng;
import android.location.Address;
import android.location.Criteria;
import android.location.Geocoder;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.AsyncTask;
import android.os.Bundle;
import android.provider.Settings;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.support.v4.app.FragmentActivity;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AutoCompleteTextView;
import android.widget.Button;
import android.widget.Toast;
public class ShowPath extends FragmentActivity implements OnClickListener,LocationListener {
AutoCompleteTextView auto_to, auto_from;
Button btn_path, btn_loc;
double lat,lng;
int i = 1 ;
int a = 1 ;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_show_path);
// Getting reference to btn_find of the layout activity_main
auto_from = (AutoCompleteTextView) findViewById(R.id.from);
auto_to = (AutoCompleteTextView) findViewById(R.id.to);
auto_from.setText(null);
auto_to.setText(null);
btn_path=(Button) findViewById(R.id.path);
btn_loc=(Button) findViewById(R.id.btn_loc);
btn_path.setOnClickListener(this);
btn_loc.setOnClickListener(this);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.show_path, menu);
MenuItem menuitem=menu.add(Menu.NONE,Menu.FIRST,Menu.NONE,"Save");
menuitem.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
return true;
}
public boolean onMenuItemSelected(int featureId,MenuItem item)
{
Toast.makeText(getBaseContext(),"Map has been concluded from " + " to " , Toast.LENGTH_SHORT).show();
return super.onMenuItemSelected(featureId, item);
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch(v.getId()){
case R.id.path:
String from=auto_from.getText().toString();
String to = auto_to.getText().toString();
if(to.equals("")&& from.equals("")){
Toast.makeText(getBaseContext(), "Please! Enter Start and Destination properly...", Toast.LENGTH_SHORT).show();
}
else{
ConnectivityManager connMgr = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
boolean isWiFi = networkInfo.getType() == ConnectivityManager.TYPE_WIFI;
if (isWiFi==true)
{
Intent in = new Intent(ShowPath.this,ShowMap.class);
in.putExtra("Start", from);
in.putExtra("Dest", to);
startActivity(in);
}
else {
Toast.makeText(getBaseContext(), "Ooops! Error In Network Connection...", Toast.LENGTH_LONG).show();
}
}
break;
case R.id.btn_loc:
// Getting LocationManager object from System Service LOCATION_SERVICE
LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
// Creating a criteria object to retrieve provider
Criteria criteria = new Criteria();
// Getting the name of the best provider
String provider = locationManager.getBestProvider(criteria, true);
Location location = null ;
if(provider.contains("gps"))
{
// Getting Current Location From GPS
if(auto_from.getText().toString().matches("") && (auto_to.getText().toString().matches(""))){
i=0 ;
}
else if (auto_to.getText().toString().matches("")) {
a=0;
}
location = locationManager.getLastKnownLocation(provider);
if(location!=null)
onLocationChanged(location);
}
else
{
showDialog(0);
}
locationManager.requestLocationUpdates(provider, 1000, 0, this);
//locationManager.requestLocationUpdates(provider, 20000, 0, this);
break;
default:
break;
} //switch statement ends
} // on click func ends
@Override
protected Dialog onCreateDialog(int id){
final String message = "Enable either GPS or any other location"
+ " service to find current location. Click OK to go to"
+ " location services settings to let you do so.";
return new AlertDialog.Builder(this).setMessage(message)
.setTitle("Warning")
.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int whichButton)
{
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivity(intent);
}
})
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int whichButton)
{
Toast.makeText(getBaseContext(),
"Gps services still disabled", Toast.LENGTH_SHORT).show();
}
}).create();
}
@Override
public void onLocationChanged(Location location) {
// TODO Auto-generated method stub
lat = location.getLatitude();
lng = location.getLongitude();
LatLng point = new LatLng(lat,lng);
// converting user location to address and assign it to autocomplete text box
new ReverseGeocodingTask(getBaseContext()).execute(point);
}
private class ReverseGeocodingTask extends AsyncTask<LatLng, Void, String>{
Context mContext;
public ReverseGeocodingTask(Context context){
super();
mContext = context;
}
// Finding address using reverse geocoding
@Override
protected String doInBackground(LatLng... params) {
Geocoder geocoder = new Geocoder(mContext);
double latitude = params[0].latitude;
double longitude = params[0].longitude;
List<Address> addresses = null;
String addressText="";
try {
addresses = geocoder.getFromLocation(latitude, longitude,1);
} catch (IOException e) {
e.printStackTrace();
}
if(addresses != null && addresses.size() > 0 ){
Address address = addresses.get(0);
addressText = String.format("%s, %s, %s",
address.getMaxAddressLineIndex() > 0 ? address.getAddressLine(0) : "",
address.getLocality(),
address.getCountryName());
}
return addressText;
}
@Override
protected void onPostExecute(String addressText) {
if(i==0){
auto_from.setText(addressText);
i++ ;
}
else if(a==0){
Log.d("asim","" + a);
auto_to.setText(addressText);
a++;
}
}// post execute finish
}// class reverse geocoding finish
@Override
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
}
