не удается получить текущее местоположение с помощью google map android

Question

Я разрабатываю приложение, в котором мы можем получить текущее местоположение, когда карта загружена, и мы можем получить местоположение, когда карта перетаскивается. Я установил маркер в центре, чтобы получить центральную точку карты. Это то же самое, что и приложение uber. Я воспользовался этой ссылкой для кода How to Implement draggable map like uber android, Update with change location

Но я не могу получить текущее местоположение. Я попытался отладить код, поставив точку перерыва на gps.canGetLocation();

 latitude = gps.getLatitude(); 
     longitude = gps.getLongitude(); 

это. Но доза не называется.

В чем причина?

ChooseFromMapActivity

public class ChooseFromMapActivity extends AppCompatActivity implements 
      LocationListener, GoogleApiClient.ConnectionCallbacks, 
      GoogleApiClient.OnConnectionFailedListener { 
     // A request to connect to Location Services 
     private LocationRequest mLocationRequest; 
     GoogleMap mGoogleMap; 

     public static String ShopLat; 
     public static String ShopPlaceId; 
     public static String ShopLong; 
     // Stores the current instantiation of the location client in this object 
     private GoogleApiClient mGoogleApiClient; 
     boolean mUpdatesRequested = false; 
     private TextView markerText; 
     private LatLng center; 
     private LinearLayout markerLayout; 
     private Geocoder geocoder; 
     private List<Address> addresses; 
     private TextView Address; 
     double latitude; 
     double longitude; 
     private GPSTracker gps; 
     private LatLng curentpoint; 

     @Override 
     protected void onCreate(Bundle savedInstanceState) { 
      super.onCreate(savedInstanceState); 
      setContentView(R.layout.activity_choose_from_map); 
      Address = (TextView) findViewById(R.id.textShowAddress); 
      markerText = (TextView) findViewById(R.id.locationMarkertext); 
      markerLayout = (LinearLayout) findViewById(R.id.locationMarker); 

      int status = GooglePlayServicesUtil 
        .isGooglePlayServicesAvailable(getBaseContext()); 

      if (status != ConnectionResult.SUCCESS) { 

       int requestCode = 10; 
       Dialog dialog = GooglePlayServicesUtil.getErrorDialog(status, this, 
         requestCode); 
       dialog.show(); 

      } else { 
       mLocationRequest = LocationRequest.create(); 
       mLocationRequest.setInterval(GData.UPDATE_INTERVAL_IN_MILLISECONDS); 

       mLocationRequest 
         .setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY); 
       mLocationRequest 
         .setFastestInterval(GData.FAST_INTERVAL_CEILING_IN_MILLISECONDS); 

       mUpdatesRequested = false; 
       mGoogleApiClient = new GoogleApiClient.Builder(this) 
         .addApi(LocationServices.API).addConnectionCallbacks(this) 
         .addOnConnectionFailedListener(this).build(); 
       mGoogleApiClient.connect(); 
      } 
     } 
     private void stupMap() { 
      try { 

       mGoogleMap = ((MapFragment) getFragmentManager().findFragmentById(
         R.id.map)).getMap(); 
       mGoogleMap.setMyLocationEnabled(true); 
       mGoogleMap.getUiSettings().setZoomControlsEnabled(false); 
       mGoogleMap.getUiSettings().setMyLocationButtonEnabled(true); 
       mGoogleMap.getUiSettings().setCompassEnabled(true); 
       mGoogleMap.getUiSettings().setRotateGesturesEnabled(true); 
       mGoogleMap.getUiSettings().setZoomGesturesEnabled(true); 

       PendingResult<Status> result = LocationServices.FusedLocationApi 
         .requestLocationUpdates(mGoogleApiClient, mLocationRequest, 
           new LocationListener() { 

            @Override 
            public void onLocationChanged(Location location) { 
             markerText.setText("Location received: " 
               + location.toString()); 
            } 
           }); 

       Log.e("Reached", "here"); 

       result.setResultCallback(new ResultCallback<Status>() { 

        @Override 
        public void onResult(Status status) { 

         if (status.isSuccess()) { 

          Log.e("Result", "success"); 

         } else if (status.hasResolution()) { 
          try { 
           status.startResolutionForResult(ChooseFromMapActivity.this, 
             100); 
          } catch (SendIntentException e) { 
           e.printStackTrace(); 
          } 
         } 
        } 
       }); 
       gps = new GPSTracker(ChooseFromMapActivity.this); 

       gps.canGetLocation(); 

       latitude = gps.getLatitude(); 
       longitude = gps.getLongitude(); 
       curentpoint = new LatLng(latitude, longitude); 

       CameraPosition cameraPosition = new CameraPosition.Builder() 
         .target(curentpoint).zoom(19f).tilt(70).build(); 

       mGoogleMap.setMyLocationEnabled(true); 
       mGoogleMap.animateCamera(CameraUpdateFactory 
         .newCameraPosition(cameraPosition)); 

       mGoogleMap.setOnCameraChangeListener(new OnCameraChangeListener() { 
        @Override 
        public void onCameraChange(CameraPosition arg0) { 
         // TODO Auto-generated method stub 
         center = mGoogleMap.getCameraPosition().target; 

         markerText.setText(" Set your Location "); 
         mGoogleMap.clear(); 
         markerLayout.setVisibility(View.VISIBLE); 

         try { 
          new GetLocationAsync(center.latitude, center.longitude) 
            .execute(); 

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

       markerLayout.setOnClickListener(new OnClickListener() { 

        @Override 
        public void onClick(View v) { 
         try { 

          LatLng latLng1 = new LatLng(center.latitude, 
            center.longitude); 

          Marker m = mGoogleMap.addMarker(new MarkerOptions() 
            .position(latLng1) 
            .title(" Set your Location ") 
            .snippet("") 
            .icon(BitmapDescriptorFactory 
              .fromResource(R.drawable.ic_actionloc))); 
          m.setDraggable(true); 

          markerLayout.setVisibility(View.GONE); 
         } catch (Exception e) { 
         } 
        } 
       }); 
      } catch (Exception e) { 
       e.printStackTrace(); 
      } 
     } 
     @Override 
     public void onLocationChanged(Location location) { 
     } 
     @Override 
     public void onConnectionFailed(ConnectionResult arg0) { 
     } 
     @Override 
     public void onConnected(Bundle arg0) { 
      stupMap(); 
     } 
     private class GetLocationAsync extends AsyncTask<String, Void, String> { 
      double x, y; 
      StringBuilder str; 

      public GetLocationAsync(double latitude, double longitude) { 
       x = latitude; 
       y = longitude; 
      } 
    @Override 
      protected void onPreExecute() { 
       Address.setText(" Getting location "); 
      } 
      @Override 
      protected String doInBackground(String... params) { 
       try { 
        geocoder = new Geocoder(ChooseFromMapActivity.this, Locale.ENGLISH); 
        addresses = geocoder.getFromLocation(x, y, 1); 
        str = new StringBuilder(); 
        if (Geocoder.isPresent()) { 
         Address returnAddress = addresses.get(0); 
         String localityString = returnAddress.getLocality(); 
         String city = returnAddress.getCountryName(); 
         String region_code = returnAddress.getCountryCode(); 
         String zipcode = returnAddress.getPostalCode(); 

         str.append(localityString + ""); 
         str.append(city + "" + region_code + ""); 
         str.append(zipcode + ""); 
     } else { 
        } 
       } catch (IOException e) { 
        Log.e("tag", e.getMessage()); 
       } 
       return null; 
     } 
      @Override 
      protected void onPostExecute(String result) { 
       try { 
        Address.setText(addresses.get(0).getAddressLine(0) 
          + addresses.get(0).getAddressLine(1) + " "); 
       } catch (Exception e) { 
        e.printStackTrace(); 
       } 
      } 
      @Override 
      protected void onProgressUpdate(Void... values) { 
      } 
     } 
     @Override 
     public void onConnectionSuspended(int arg0) { 
     } 
    } 

GPSTracker

public class GPSTracker extends Service implements LocationListener { 

    private final Context mContext; 
    boolean isGPSEnabled = false; 
    boolean isNetworkEnabled = false; 
    boolean canGetLocation = false; 

    Location location; 
    double latitude=; 
    double longitude=; 

    private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10; 
    private static final long MIN_TIME_BW_UPDATES = 1000 * 60 * 1; 
    protected LocationManager locationManager; 

    public GPSTracker(Context context) { 
     this.mContext = context; 
     getLocation(); 
    } 
    public Location getLocation() { 
     try { 
      locationManager = (LocationManager) mContext 
        .getSystemService(LOCATION_SERVICE); 
      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, 
          MIN_TIME_BW_UPDATES, 
          MIN_DISTANCE_CHANGE_FOR_UPDATES, this); 

        if (locationManager != null) { 
         location = locationManager 
           .getLastKnownLocation(LocationManager.NETWORK_PROVIDER); 
         updateGPSCoordinates(); 
        } 
       } 
       if (isGPSEnabled) { 
        if (location == null) { 
         locationManager.requestLocationUpdates(
           LocationManager.GPS_PROVIDER, 
           MIN_TIME_BW_UPDATES, 
           MIN_DISTANCE_CHANGE_FOR_UPDATES, this); 

         if (locationManager != null) { 
          location = locationManager 
            .getLastKnownLocation(LocationManager.GPS_PROVIDER); 
          updateGPSCoordinates(); 
         } 
        } 
       } 
      } 
     } catch (Exception e) { 
      Log.e("Error : Location", 
        "Impossible to connect to LocationManager", e); 
     } 

     return location; 
    } 

    public void updateGPSCoordinates() { 
     if (location != null) { 
      latitude = location.getLatitude(); 
      longitude = location.getLongitude(); 
     } 
    } 

    public void stopUsingGPS() { 
     if (locationManager != null) { 
      locationManager.removeUpdates(GPSTracker.this); 
      locationManager = null; 
     } 
    } 
    public double getLatitude() { 
     if (location != null) { 
      latitude = location.getLatitude(); 
     } 
     return latitude; 
    } 
    public double getLongitude() { 
     if (location != null) { 
      longitude = location.getLongitude(); 
     } 

     return longitude; 
    } 
    public boolean canGetLocation() { 
     return this.canGetLocation; 
    } 
    public void showSettingsAlert(){ 
     AlertDialog.Builder alertDialog = new AlertDialog.Builder(mContext); 
     alertDialog.setTitle("GPS is settings"); 
     alertDialog.setMessage("GPS is not enabled. Do you want to go to settings menu?"); 
     alertDialog.setPositiveButton("Settings", new DialogInterface.OnClickListener() { 
      public void onClick(DialogInterface dialog, int which) { 
       Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS); 
       mContext.startActivity(intent); 
      } 
     }); 
     alertDialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener() { 
      public void onClick(DialogInterface dialog, int which) { 
       dialog.cancel(); 
      } 
     }); 
     alertDialog.show(); 
    } 
public List<Address>getGeocoderAddress(Context context){ 
     if(location!=null){ 
     Geocoder geocoder=new Geocoder(context,Locale.ENGLISH); 
     try{ 
     List<Address>addresses=geocoder.getFromLocation(latitude, 
     longitude,1); 
     return addresses; 
      } catch (IOException e) { 
       Log.e("Error : Geocoder", "Impossible to connect to Geocoder", 
         e); 
      } 
     } 

     return null; 
    } 
    public String getAddressLine(Context context) { 
     List<Address> addresses = getGeocoderAddress(context); 
     if (addresses != null && addresses.size() > 0) { 
      Address address = addresses.get(0); 
      String addressLine = address.getAddressLine(0); 

      return addressLine; 
     } else { 
      return null; 
     } 
    } 
    public String getLocality(Context context) { 
     List<Address> addresses = getGeocoderAddress(context); 
     if (addresses != null && addresses.size() > 0) { 
      Address address = addresses.get(0); 
      String locality = address.getLocality(); 

      return locality; 
     } else { 
      return null; 
     } 
    } 
    public String getPostalCode(Context context) { 
     List<Address> addresses = getGeocoderAddress(context); 
     if (addresses != null && addresses.size() > 0) { 
      Address address = addresses.get(0); 
      String postalCode = address.getPostalCode(); 

      return postalCode; 
     } else { 
      return null; 
     } 
    } 
    public String getCountryName(Context context) { 
     List<Address> addresses = getGeocoderAddress(context); 
     if (addresses != null && addresses.size() > 0) { 
      Address address = addresses.get(0); 
      String countryName = address.getCountryName(); 

      return countryName; 
     } else { 
      return null; 
     } 
    } 

    @Override 
    public void onLocationChanged(Location location) { 
    } 

    @Override 
    public void onProviderDisabled(String provider) { 
     showSettingsAlert(); 
    } 

    @Override 
    public void onProviderEnabled(String provider) { 
    } 

    @Override 
    public void onStatusChanged(String provider, int status, Bundle extras) { 
    } 

    @Override 
    public IBinder onBind(Intent intent) { 
     return null; 
    } 
} 

ChooseFromMapActivity Layout

<RelativeLayout 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:app="http://schemas.android.com/apk/res-auto" 
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" 
    android:layout_height="match_parent" android:fitsSystemWindows="true" 
    tools:context="com.example.siddhi.go_jek.ChooseFromMapActivity" 
    android:orientation="vertical"> 

    <android.support.v7.widget.Toolbar 
     xmlns:app="http://schemas.android.com/apk/res-auto" 
     android:id="@+id/toolbar" 
     android:layout_width="match_parent" 
     android:layout_height="?attr/actionBarSize" 
     android:background="?attr/colorPrimary" 
     app:popupTheme="@style/ThemeOverlay.AppCompat.Light" 
     android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar" 
     android:layout_alignParentTop="true" 
     android:layout_alignParentStart="true" /> 

    <fragment android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:id="@+id/map" 
     tools:context=".ChooseFromMapActivity" 
     android:name="com.google.android.gms.maps.SupportMapFragment" 
     android:layout_below="@+id/toolbar" 
     android:layout_alignParentStart="true" /> 

    <LinearLayout 
      android:id="@+id/locationMarker" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_gravity="center" 
     android:gravity="center" 
      android:orientation="vertical" 
     android:layout_centerVertical="true" 
     android:layout_centerHorizontal="true"> 
     <TextView 
      android:id="@+id/locationMarkertext" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:gravity="center" 
      android:minWidth="180dp" 
      android:paddingLeft="2dp" 
      android:paddingRight="2dp" 
      android:text=" Set your Location " 
      android:textColor="@android:color/black" /> 
      <ImageView 
       android:id="@+id/imageView1" 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:src="@drawable/ic_place_black_48dp" 
       android:layout_gravity="center" /> 
     </LinearLayout> 
     <LinearLayout 
      android:layout_width="280dp" 
      android:layout_height="wrap_content" 
      android:orientation="vertical" 
      android:layout_gravity="center_horizontal" 
      android:layout_above="@+id/locationMarker" 
      android:layout_centerHorizontal="true" 
      android:layout_marginBottom="45dp"> 

      <LinearLayout 
       android:layout_width="280dp" 
       android:layout_height="40dp" 
       android:background="@android:color/holo_blue_dark" 
       android:layout_gravity="center_vertical" 
       android:weightSum="1" 
       android:id="@+id/LinearLayoutUseLoc"> 
       <TextView 
        android:layout_width="match_parent" 
        android:layout_height="20dp" 
        android:textAppearance="?android:attr/textAppearanceMedium" 
        android:text="@string/UseThisLoc" 
        android:id="@+id/textView23" 
        android:layout_gravity="center" 
        android:textAlignment="center" 
        android:layout_marginLeft="25dp" 
        android:drawableEnd="@drawable/ic_chevron_right_black_36dp" 
        android:textColorHighlight="@android:color/white" 
        android:textColor="@android:color/white" /> 
      </LinearLayout> 
      <LinearLayout 
       android:layout_width="280dp" 
       android:layout_height="40dp" 
       android:background="@android:color/white" 
       android:layout_gravity="center_vertical"> 

       <TextView 
        android:layout_width="match_parent" 
        android:layout_height="wrap_content" 
        android:textAppearance="?android:attr/textAppearanceMedium" 
        android:id="@+id/textShowAddress" 
        android:layout_marginLeft="30dp" 
        android:layout_marginRight="30dp" 
        android:layout_gravity="center" /> 
      </LinearLayout> 

     </LinearLayout> 

    <LinearLayout 
     android:layout_width="match_parent" 
     android:layout_height="40dp" 
     android:background="@android:color/white" 
     android:orientation="horizontal" 
     android:layout_gravity="center_horizontal|top" 
     android:layout_marginLeft="20dp" 
     android:layout_marginRight="20dp" 
     android:layout_below="@+id/toolbar" 
     android:layout_centerHorizontal="true" 
     android:layout_marginTop="20dp" 
     android:weightSum="1"> 

     <EditText 
      android:layout_width="262dp" 
      android:layout_height="40dp" 
      android:layout_marginLeft="05dp" 
      android:layout_marginRight="05dp" 
      android:layout_weight="0.83" 
      android:layout_gravity="bottom" /> 
     <ImageView 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:id="@+id/imageView22" 
      android:background="@drawable/ic_search_black_36dp" 
      android:layout_gravity="bottom" 
      android:layout_marginLeft="10dp" /> 
    </LinearLayout> 
</RelativeLayout> 

файл манифеста

<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="com.example.siddhi.go_jek" > 
    <uses-permission android:name="com.example.siddhi.mapdmo.permission.MAPS_RECEIVE" /> 
    <uses-permission android:name="android.permission.INTERNET" /> 
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> 
    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" /> 
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> 
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> 
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> 

    <permission 
     android:name="com.example.siddhi.mapdmo.permission.MAPS_RECEIVE" 
     android:protectionLevel="signature" /> 

    <uses-feature 
     android:glEsVersion="0x00020000" 
     android:required="true" /> 

    <application 
     android:allowBackup="true" 
     android:icon="@mipmap/ic_launcher" 
     android:label="@string/app_name" 
     android:supportsRtl="true" 
     android:theme="@style/AppTheme" > 
     <meta-data 
      android:name="com.google.android.geo.API_KEY" 
      android:value="AIzaSyDjQ6onUW2O34wjnrYqsWht48FGGOPVZWI" /> 

     <activity android:name=".MainActivity" > 
      <intent-filter> 
       <action android:name="android.intent.action.MAIN" /> 

       <category android:name="android.intent.category.LAUNCHER" /> 
      </intent-filter> 
     </activity> 
     <activity 
      android:name=".GoSend" 
      android:theme="@style/AppTheme" > 
      <meta-data 
       android:name="android.support.PARENT_ACTIVITY" 
       android:value="com.example.siddhi.go_jek.MainActivity" /> 
      <meta-data 
       android:name="com.google.android.gms.version" 
       android:value="@integer/google_play_services_version" /> 
     </activity> 
     <activity 
      android:name=".PickLocationActivity" 
      android:label="@string/title_activity_pick_location" 
      android:theme="@style/AppTheme" > 
     </activity> 
     <activity 
      android:name=".ChooseFromMapActivity" 
      android:label="@string/title_activity_choose_from_map" 
      android:theme="@style/AppTheme" > 
     </activity> 
    </application> 
</manifest> 

Может ли кто-нибудь помочь? Спасибо ..

Answer 1

проверка это ... это может помочь вам в поиске текущего местоположения

пакет com.example.splashscreen;

import android.app.Activity; 
import android.content.Context; 
import android.content.Intent; 
import android.location.Location; 
import android.location.LocationListener; 
import android.location.LocationManager; 
import android.os.Bundle; 
import android.provider.Settings; 
import android.view.Menu; 
import android.view.View; 
import android.widget.TextView; 
import android.widget.Toast; 

import com.google.android.gms.maps.CameraUpdate; 
import com.google.android.gms.maps.CameraUpdateFactory; 
import com.google.android.gms.maps.GoogleMap; 
import com.google.android.gms.maps.MapFragment; 
import com.google.android.gms.maps.model.BitmapDescriptorFactory; 
import com.google.android.gms.maps.model.LatLng; 
import com.google.android.gms.maps.model.MarkerOptions; 


public class LocationTests extends Activity implements LocationListener { 

    double latitude, longitude; 
    private GoogleMap map; 






    private final LatLng LOCATION_INDORE = new LatLng(22.7253, 75.8655); 
    private final LatLng LOCATION_PUNE = new LatLng(18.5203, 73.8567); 


    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 

     setContentView(R.layout.activity_location_tests); 
     LocationManager lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE); 
     lm.requestLocationUpdates(LocationManager.NETWORK_PROVIDER,0, 0,this); 
     LocationManager service = (LocationManager)getSystemService(LOCATION_SERVICE); 
     boolean enabledGPS = service.isProviderEnabled(LocationManager.GPS_PROVIDER); 
     boolean enabledWiFi = service.isProviderEnabled(LocationManager.NETWORK_PROVIDER); 
     if (!enabledGPS) { 
      Toast.makeText(this, "GPS signal not found", Toast.LENGTH_LONG).show(); 
      Intent intentgo = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS); 
      startActivity(intentgo); 
     } 
     else if(!enabledWiFi) { 
      Toast.makeText(this, "Network signal not found", Toast.LENGTH_LONG).show(); 
      Intent intentgo2 = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS); 
      startActivity(intentgo2); 
     } 
     initializeMap(); 
     map.getUiSettings().setMyLocationButtonEnabled(true); 
     map.getUiSettings().setCompassEnabled(true); 

     map =((MapFragment)getFragmentManager().findFragmentById(R.id.map)).getMap(); 
     map.addMarker(new MarkerOptions().position(LOCATION_INDORE).title("Source")); 
     map.addMarker(new MarkerOptions().position(LOCATION_PUNE).title("Destination")); 

     GPSTracker mGPS = new GPSTracker(this); 

     TextView text = (TextView) findViewById(R.id.texts); 
     if(mGPS.canGetLocation){ 
      mGPS.getLocation(); 
      //LatLng LOCATION_MYPOSITION = new LatLng(mGPS.getLatitude(),mGPS.getLongitude()); 
      text.setText("Lat"+mGPS.getLatitude()+"Lon"+mGPS.getLongitude()); 
      map.setMapType(GoogleMap.MAP_TYPE_NORMAL); 

      CameraUpdate update = CameraUpdateFactory.newLatLngZoom(new LatLng(mGPS.getLatitude(), mGPS.getLongitude()), 17); 
      map.animateCamera(update); 
      map.addMarker(new MarkerOptions().position(new LatLng(mGPS.getLatitude(),mGPS.getLongitude())).title("Your Current Position")); 
     }else{ 
      text.setText("Unabletofind"); 
      System.out.println("Unable"); 
     } 

    } 

    private void initializeMap() { 
     // TODO Auto-generated method stub 
     if(map == null){ 
      map= ((MapFragment)getFragmentManager().findFragmentById(R.id.map)).getMap(); 

      if (map == null){ 
       Toast.makeText(getApplicationContext(), "Map could not be creater", Toast.LENGTH_LONG).show(); 
      } 
     } 

    } 

    public void onClick_indore(View v){ 
     map.setMapType(GoogleMap.MAP_TYPE_NORMAL); 
     CameraUpdate update = CameraUpdateFactory.newLatLngZoom(LOCATION_INDORE, 16); 
     map.animateCamera(update); 

    } 

    public void onClick_pune(View v){ 
     map.setMapType(GoogleMap.MAP_TYPE_NORMAL); 
     CameraUpdate update = CameraUpdateFactory.newLatLngZoom(LOCATION_PUNE, 12); 
     map.animateCamera(update); 

    } 

    protected void onResume() { 
     super.onResume(); 
     initializeMap(); 
    } 
    public void onClick_search(View v){ 
     GPSTracker mygps = new GPSTracker(this); 
     double startlat = mygps.getLatitude(); 
     double startlon = mygps.getLongitude(); 
     Intent nav = new Intent(this,Webviewact.class); 
     String url="http://maps.google.com/maps?saddr="+startlat+","+startlon+"&daddr=18.5203, 73.8567"; 
     nav.putExtra("url", url); 
     //Intent nav= new Intent(Intent.ACTION_VIEW, Uri.parse("http://maps.google.com/maps?saddr=START_LON,START_LAT&daddr=END_LON,END_LAT")); 
     startActivity(nav); 
     // map.setMapType(GoogleMap.MAP_TYPE_NORMAL); 
    // CameraUpdate update = CameraUpdateFactory.newLatLngZoom(LOCATION_MYPOSITION, 17); 
    //map.animateCamera(update); 
     } 


    private final LocationListener mLocationListener = new LocationListener(){ 

     @Override 
     public void onLocationChanged(Location location) { 
      // TODO Auto-generated method stub 
      map.clear(); 
      MarkerOptions marker = new MarkerOptions().position(new LatLng(location.getLatitude(),location.getLongitude())); 
      marker.title("Current Location"); 
      marker.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_CYAN)); 
      map.addMarker(marker); 
      map.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(location.getLatitude(),location.getLongitude()),16)); 


     } 

     @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 

     } 

    }; 


    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.location_tests, menu); 
     return true; 
    } 

    @Override 
    public void onLocationChanged(Location arg0) { 
     // TODO Auto-generated method stub 

    } 

    @Override 
    public void onProviderDisabled(String arg0) { 
     // 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 

    } 

}