Android：谷歌地图当前位置和其他标记点

Question

我正在开发一个Android谷歌地图应用程序。如何创建当前位置，气球覆盖层和其他标记点位置。

我在（CustomMap.java）创建其他标记的位置点

在这里，我想当前的位置also.Please帮我

CustomMap.java

public class CustomMap extends MapActivity implements LocationListener { 

MapView mapView; 
List<Overlay> mapOverlays; 
Drawable drawable; 
Drawable drawable2; 
CustomItemizedOverlay<CustomOverlayItem> itemizedOverlay; 
CustomItemizedOverlay<CustomOverlayItem> itemizedOverlay2; 
double longitude; 
double latitude; 

long start; 
long stop; 
int x, y; 
int lati = 0; 
int longit = 0; 
GeoPoint touchedPoint; 
public boolean overlay_status=false; 

/** Called when the activity is first created. */ 
    @Override 
public void onCreate(Bundle savedInstanceState) { 

    super.onCreate(savedInstanceState); 

    // making it full screen 
    requestWindowFeature(Window.FEATURE_NO_TITLE); 
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); 
    setContentView(R.layout.activity_custom_map); 

    mapView = (MapView) findViewById(R.id.mapview); 
    mapView.setBuiltInZoomControls(true); 

    mapOverlays = mapView.getOverlays(); 

    // first overlay 
    drawable = getResources().getDrawable(R.drawable.marker); 
    itemizedOverlay = new CustomItemizedOverlay<CustomOverlayItem>(drawable, mapView); 

    //first overlay in first pinpoint 
    GeoPoint point = new GeoPoint((int)(13.0094444*1E6),(int)(77.5508333*1E6)); 
    CustomOverlayItem overlayItem = new CustomOverlayItem(point, "ISKCON Temple Bangalore(1997)", 
      "(ISKCON Temple, Chord Rd, Mahalakshmipuram Layout, Nagapura, Bangalore, Karnataka, India)", 
      "http://www.iskcon-bda.org/data/HKH.jpg"); 
    itemizedOverlay.addOverlay(overlayItem); 

    //first overlay in second pinpoint 
    GeoPoint point2 = new GeoPoint((int)(12.8008*1E6),(int)(77.5756*1E6)); 
    CustomOverlayItem overlayItem2 = new CustomOverlayItem(point2, "Bannerghatta National Park", 
      "(Bannerghatta Biological Park is carved out of the Bannerghatta National Park in the year 2002)", 
      "http://www.google.co.in/imgres?imgurl=http://travel.sulekha.com/" + 
      "india/karnataka/bangalore/photos/bannerghatta-national-park-25.jpg&imgrefurl=http://travel.sulekha.com/" + 
      "a-visit-to-bannerghatta-national-park_bangalore-travelogue-3541.htm&h=194&w=259&sz=1&tbnid=K5TNPwXHgihgRM:&tbnh=" + 
      "119&tbnw=160&zoom=1&usg=__MFNGL1C2InXP7jw7XmEi4ym45NY=&docid=d78iF3T5ditWeM&itg=1&hl=en&sa=X&ei=" + 
      "CpwQUdOmHIPUrQe0m4H4Bg&sqi=2&ved=0CHwQ_B0wCw");   
    itemizedOverlay.addOverlay(overlayItem2); 

    mapOverlays.add(itemizedOverlay); 

    // second overlay 
    drawable2 = getResources().getDrawable(R.drawable.marker2); 
    itemizedOverlay2 = new CustomItemizedOverlay<CustomOverlayItem>(drawable2, mapView); 

    //second overlay in third pinpoint 
    GeoPoint point3 = new GeoPoint((int)(12.8339956*1E6),(int)(77.4009816*1E6)); 
    CustomOverlayItem overlayItem3 = new CustomOverlayItem(point3, "Wonderla Bangalore(2005)", 
      "(Wonderla is an amusement park located near Bidadi, 28 kilometres Bangalore, spanning 82 acres of land)", 
      "http://www.google.co.in/imgres?imgurl=http://www.yohyoh.com/places-tourism/pictures/wb3.jpg&imgrefurl=http://" + 
      "www.yohyoh.com/places-tourism/view.php/popular-tours/Karnataka/Bangalore/wonderla-bangalore/561/8192987807&h=" + 
      "194&w=259&sz=1&tbnid=RoLC5gzRHP6VSM:&tbnh=160&tbnw=213&zoom=1&usg=__ShDQAmQ0zjQaKbsy0A63BokHAmk=" + 
      "&docid=J1aN09WXjvHw4M&itg=1&hl=en&sa=X&ei=Sp0QUbvIEMHjrAfTy4GgBA&ved=0CNMBEPwdMAo"); 
    itemizedOverlay2.addOverlay(overlayItem3); 

    //second overlay in third pinpoint 
    GeoPoint point4 = new GeoPoint((int)(12.8385923*1E6),(int)(77.661710599*1E6)); 
    CustomOverlayItem overlayItem4 = new CustomOverlayItem(point4, "Wipro Technologies,Bangalore", 
      "(Wipro Technologies, Electronics City Phase 1, Electronics City, Bangalore, Karnataka 560100, India)", 
      "http://www.electronic-city.in/companies/profile/wipro/wipro-electronic-city.jpg");  
    itemizedOverlay2.addOverlay(overlayItem4); 

    mapOverlays.add(itemizedOverlay2); 



    // Getting LocationManager object from System Service LOCATION_SERVICE 
    LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE); 

    // Creating a criteria object to retrieve provider 
    Criteria criteria = new Criteria(); 

    criteria.setAccuracy(Criteria.ACCURACY_FINE); 

    // Getting the name of the best provider 
    String provider = locationManager.getBestProvider(criteria, true); 

    // Getting Current Location 
    Location location = locationManager.getLastKnownLocation(provider); 

    if(location!=null){ 
     onLocationChanged(location); 
    } 

    locationManager.requestLocationUpdates(provider, 20000, 0, this); 

    String address = ""; 
    Geocoder geoCoder = new Geocoder(
      getBaseContext(), Locale.getDefault()); 

    latitude = location.getLatitude(); 

    // Getting longitude 
    longitude = location.getLongitude(); 

    // Creating an instance of GeoPoint corresponding to latitude and longitude 
    GeoPoint point5 = new GeoPoint((int)(latitude * 1E6), (int)(longitude*1E6)); 

    try { 
     List<Address> addresses = geoCoder.getFromLocation(
      point.getLatitudeE6()/1E6, 
      point.getLongitudeE6()/1E6, 1); 

      if (addresses.size() > 0) { 
       for (int index = 0; index < addresses.get(0).getMaxAddressLineIndex(); index++) 
        address += addresses.get(0).getAddressLine(index) + " "; 
      } 
      tvLocation.setText("Address :" + address ); 
    } 
    catch (IOException e) {     
     e.printStackTrace(); 
    } 


    drawable = getResources().getDrawable(R.drawable.url); 
    itemizedOverlay = new CustomItemizedOverlay<CustomOverlayItem>(drawable, mapView); 

    mapView.getOverlays().add(itemizedOverlay); 
    itemizedOverlay.runOnFirstFix(new Runnable() { 
    @Override 
    public void run() { 
    // TODO Auto-generated method stub 
    mapView.getOverlays().add(itemizedOverlay); 
    } 
    }); 
    MapController mapController = mapView.getController(); 

    // Locating the Geographical point in the Map 
    mapController.animateTo(point5); 
    itemizedOverlay.enableMyLocation(); 
    mapView.postInvalidate(); 
    // Getting list of overlays available in the map 
    List<Overlay> mapOverlays = mapView.getOverlays(); 

    CustomOverlayItem currentLocation = new CustomOverlayItem(point, "Current Location", "Latitude : " + latitude + ", Longitude:" + longitude, null); 

    // Adding the mark to the overlay 
    itemizedOverlay.addOverlay(currentLocation); 

    // Clear Existing overlays in the map 
    mapOverlays.clear(); 
    mapOverlays.add(itemizedOverlay); 



    if (savedInstanceState == null) { 

    //Contains Displaying the pinpoint 
    final MapController mc = mapView.getController(); 
    mc.animateTo(point); 
    mc.setZoom(16); 
    }else { 

     // example restoring focused state of overlays 
     int focused; 
     focused = savedInstanceState.getInt("focused_1", -1); 
     if (focused >= 0) { 
      itemizedOverlay.setFocus(itemizedOverlay.getItem(focused)); 
     } 
     focused = savedInstanceState.getInt("focused_2", -1); 
     if (focused >= 0) { 
      itemizedOverlay2.setFocus(itemizedOverlay2.getItem(focused)); 
     } 

    } 




    Touchy t = new Touchy(); 
    mapOverlays = mapView.getOverlays(); 
    mapOverlays.add(t); 
} 

@Override 
protected boolean isRouteDisplayed() { 
    return false; 
} 
@Override 
protected void onSaveInstanceState(Bundle outState) { 

    // example saving focused state of overlays 
    if (itemizedOverlay.getFocus() != null) outState.putInt("focused_1", itemizedOverlay.getLastFocusedIndex()); 
    if (itemizedOverlay2.getFocus() != null) outState.putInt("focused_2", itemizedOverlay2.getLastFocusedIndex()); 
    super.onSaveInstanceState(outState); 

} 

//Contains creating the option menu items 
@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    menu.add(0, 0, 1, "Remove Overlay"); 
    menu.add(0, 1, 1, "set Overlay"); 
    MenuInflater inflater = getMenuInflater(); 
    inflater.inflate(R.drawable.home_menu, menu); 
    return true; 
} 
@Override 
public boolean onPrepareOptionsMenu(Menu menu) { 
    if(overlay_status==false) 
    { 
    menu.findItem(1).setVisible(false); 
    menu.findItem(0).setVisible(true); 

    //overlay_status=true; 
    } 
    else 
    { 
     menu.findItem(0).setVisible(false); 
     menu.findItem(1).setVisible(true); 

     // overlay_status=false; 
    } 
return super.onPrepareOptionsMenu(menu); 
} 

@Override 
public boolean onOptionsItemSelected(MenuItem item) { 
    switch (item.getItemId()) { 
    case R.id.home1: 
     finish(); 
     return true; 
    case 0: 

     //Toast.makeText(getApplicationContext(), "remove overlay ", Toast.LENGTH_SHORT).show(); 

     // example hiding balloon before removing overlay 
        if (itemizedOverlay.getFocus() != null) { 
         itemizedOverlay.hideBalloon(); 
        } 
        mapOverlays.remove(itemizedOverlay); 
        mapView.invalidate(); 
        overlay_status=true; 
       return true;  
    case 1: 


     Toast.makeText(getApplicationContext(), "set overlay ", Toast.LENGTH_SHORT).show(); 
     if (itemizedOverlay.getFocus() != null) { 
      itemizedOverlay.getBalloonBottomOffset(); 
     } 
     mapOverlays.add(itemizedOverlay); 
      mapView.bringToFront(); 

      overlay_status=false; 
      return true; 
    default: 
     return super.onOptionsItemSelected(item); 
} 

} 

class Touchy extends Overlay{ 
    List<Address> address; 
    String display = ""; 
    String display1; 
    @SuppressWarnings({ "deprecation" }) 
    public boolean onTouchEvent(MotionEvent e,MapView m){ 
     if(e.getAction() == MotionEvent.ACTION_DOWN){ 
      start = e.getEventTime(); 
      x = (int)e.getX(); 
      y = (int)e.getY(); 
      touchedPoint = mapView.getProjection().fromPixels(x, y); 
      Geocoder geocoder = new Geocoder(getBaseContext(), Locale.getDefault());  
      try{ 
       address = geocoder.getFromLocation(touchedPoint.getLatitudeE6()/1E6, touchedPoint.getLongitudeE6()/1E6, 1); 
       if(address.size() > 0){ 

        for(int i = 0; i<address.get(0).getMaxAddressLineIndex(); i++){ 
         display +=address.get(0).getAddressLine(i) + "\n"; 
        } 

        Toast.makeText(getBaseContext(), display, Toast.LENGTH_LONG).show(); 

       } 

      }catch(IOException e1){ 

      } 
      finally 
      { 
       display1=display; 
       display=" "; 
      } 

      } 
     if(e.getAction() == MotionEvent.ACTION_UP){ 
      stop = e.getEventTime(); 
     } 

    /**contains the creating a Alert Dialog Box (place apinpoint, get address, Toggle View) 
    * In Dialog Box Maximum three buttens 
    */ 
    if(stop - start > 1000){ 
     AlertDialog alert = new AlertDialog.Builder(CustomMap.this).create(); 
     alert.setTitle("pick an Option"); 
     alert.setMessage("I told to pick an option"); 

     alert.setButton("place a pinpoint", new DialogInterface.OnClickListener() { 

      @Override 
      public void onClick(DialogInterface dialog, int which) { 
       CustomOverlayItem overlayItem = new CustomOverlayItem(touchedPoint,"Address:",display1, display1); 
//     SimpleItemizedOverlay itemizedOverlay = new SimpleItemizedOverlay(drawable, mapView); 
       CustomItemizedOverlay<CustomOverlayItem> itemOverlay = new CustomItemizedOverlay<CustomOverlayItem>(drawable, mapView); 
//     CustomPinpoint custom = new CustomPinpoint(drawable, CustomMap.this); 
//     custom.insertPinpoint(overlayItem); 
       itemOverlay.insertPinpoint(overlayItem); 
       itemOverlay.addOverlay(overlayItem); 
       mapOverlays.add(itemOverlay); 
      } 
     }); 

     alert.setButton2("get address", new DialogInterface.OnClickListener() { 

      @Override 
      public void onClick(DialogInterface dialog, int which) { 

      Geocoder geocoder = new Geocoder(getBaseContext(), Locale.getDefault());  
       try{ 
        List<Address> address = geocoder.getFromLocation(touchedPoint.getLatitudeE6()/1E6, touchedPoint.getLongitudeE6()/1E6, 1); 
        if(address.size() > 0){ 
         String display = ""; 
         for(int i = 0; i<address.get(0).getMaxAddressLineIndex(); i++){ 
          display +=address.get(0).getAddressLine(i) + "\n"; 
         } 
         Toast.makeText(getBaseContext(), display, Toast.LENGTH_LONG).show(); 

        } 

       }catch(IOException e){ 

       } 
      } 
     }); 

     alert.setButton3("Toggle View", new DialogInterface.OnClickListener() { 

      @Override 
      public void onClick(DialogInterface dialog, int which) { 

       if(mapView.isSatellite()){ 
        mapView.setSatellite(false); 
        mapView.setStreetView(true); 
       }else{ 
        mapView.setStreetView(false); 
        mapView.setSatellite(true); 
       } 

      } 
     }); 


     alert.show(); 
     return true; 
    } 
    return false; 

} 

} 
@Override 
public void onLocationChanged(Location location) { 
    lati = (int) (location.getLatitude() * 1E6); 
    longit = (int) (location.getLongitude() * 1E6); 
    GeoPoint ourLocation = new GeoPoint(lati, longit); 
    OverlayItem overlayItem = new OverlayItem(ourLocation, "What's up?", "2nd String"); 
    CustomPinpoint custom = new CustomPinpoint(drawable, CustomMap.this); 
    custom.insertPinpoint(overlayItem); 
    mapOverlays.add(custom); 

} 

@Override 
public void onProviderDisabled(String provider) { 

} 

@Override 
public void onProviderEnabled(String provider) { 

} 

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

} 

} 

Answer 1

试试这个，

mapView.getOverlays().add(locationoverlay); 
locationoverlay.runOnFirstFix(new Runnable() { 
@Override 
public void run() { 
// TODO Auto-generated method stub 
mapView.getOverlays().add(locationoverlay); 
} 
}); 
locationoverlay.enableMyLocation(); 
mapView.postInvalidate(); 

以上代码将提供Android的默认标记覆盖

Answer 2

当前位置试试这个AndroidHive谷歌代码

谷歌地图链接Android Working with Google Places and Maps Tutorial

public class SinglePlaceActivity extends Activity { 
// flag for Internet connection status 
Boolean isInternetPresent = false; 

// Connection detector class 
ConnectionDetector cd; 

// Alert Dialog Manager 
AlertDialogManager alert = new AlertDialogManager(); 

// Google Places 
GooglePlaces googlePlaces; 

// Place Details 
PlaceDetails placeDetails; 

// Progress dialog 
ProgressDialog pDialog; 

// KEY Strings 
public static String KEY_REFERENCE = "reference"; // id of the place 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    // TODO Auto-generated method stub 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.single_place); 

    Intent i = getIntent(); 

    // Place referece id 
    String reference = i.getStringExtra(KEY_REFERENCE); 

    // Calling a Async Background thread 
    new LoadSinglePlaceDetails().execute(reference); 
} 

/** 
* Background Async Task to Load Google places 
* */ 
class LoadSinglePlaceDetails extends AsyncTask<String, String, String> { 

    /** 
    * Before starting background thread Show Progress Dialog 
    * */ 
    @Override 
    protected void onPreExecute() { 
     super.onPreExecute(); 
     pDialog = new ProgressDialog(SinglePlaceActivity.this); 
     pDialog.setMessage("Loading profile ..."); 
     pDialog.setIndeterminate(false); 
     pDialog.setCancelable(false); 
     pDialog.show(); 
    } 

    /** 
    * getting Profile JSON 
    * */ 
    protected String doInBackground(String... args) { 
     String reference = args[0]; 

     // creating Places class object 
     googlePlaces = new GooglePlaces(); 

     // Check if used is connected to Internet 
     try { 
      placeDetails = googlePlaces.getPlaceDetails(reference); 

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

    /** 
    * After completing background task Dismiss the progress dialog 
    * **/ 
    protected void onPostExecute(String file_url) { 
     // dismiss the dialog after getting all products 
     pDialog.dismiss(); 
     // updating UI from Background Thread 
     runOnUiThread(new Runnable() { 
      public void run() { 
       /** 
       * Updating parsed Places into LISTVIEW 
       * */ 
       if(placeDetails != null){ 
        String status = placeDetails.status; 

        // check place deatils status 
        // Check for all possible status 
        if(status.equals("OK")){ 
         if (placeDetails.result != null) { 
          String name = placeDetails.result.name; 
          String address = placeDetails.result.formatted_address; 
          String phone = placeDetails.result.formatted_phone_number; 
          String latitude = Double.toString(placeDetails.result.geometry.location.lat); 
          String longitude = Double.toString(placeDetails.result.geometry.location.lng); 

          Log.d("Place ", name + address + phone + latitude + longitude); 

          // Displaying all the details in the view 
          // single_place.xml 
          TextView lbl_name = (TextView) findViewById(R.id.name); 
          TextView lbl_address = (TextView) findViewById(R.id.address); 
          TextView lbl_phone = (TextView) findViewById(R.id.phone); 
          TextView lbl_location = (TextView) findViewById(R.id.location); 

          // Check for null data from google 
          // Sometimes place details might missing 
          name = name == null ? "Not present" : name; // if name is null display as "Not present" 
          address = address == null ? "Not present" : address; 
          phone = phone == null ? "Not present" : phone; 
          latitude = latitude == null ? "Not present" : latitude; 
          longitude = longitude == null ? "Not present" : longitude; 

          lbl_name.setText(name); 
          lbl_address.setText(address); 
          lbl_phone.setText(Html.fromHtml("<b>Phone:</b> " + phone)); 
          lbl_location.setText(Html.fromHtml("<b>Latitude:</b> " + latitude + ", <b>Longitude:</b> " + longitude)); 
         } 
        } 
        else if(status.equals("ZERO_RESULTS")){ 
         alert.showAlertDialog(SinglePlaceActivity.this, "Near Places", 
           "Sorry no place found.", 
           false); 
        } 
        else if(status.equals("UNKNOWN_ERROR")) 
        { 
         alert.showAlertDialog(SinglePlaceActivity.this, "Places Error", 
           "Sorry unknown error occured.", 
           false); 
        } 
        else if(status.equals("OVER_QUERY_LIMIT")) 
        { 
         alert.showAlertDialog(SinglePlaceActivity.this, "Places Error", 
           "Sorry query limit to google places is reached", 
           false); 
        } 
        else if(status.equals("REQUEST_DENIED")) 
        { 
         alert.showAlertDialog(SinglePlaceActivity.this, "Places Error", 
           "Sorry error occured. Request is denied", 
           false); 
        } 
        else if(status.equals("INVALID_REQUEST")) 
        { 
         alert.showAlertDialog(SinglePlaceActivity.this, "Places Error", 
           "Sorry error occured. Invalid Request", 
           false); 
        } 
        else 
        { 
         alert.showAlertDialog(SinglePlaceActivity.this, "Places Error", 
           "Sorry error occured.", 
           false); 
        } 
       }else{ 
        alert.showAlertDialog(SinglePlaceActivity.this, "Places Error", 
          "Sorry error occured.", 
          false); 
       } 

      } 
     }); 

    } 

} 

}