現在の場所を1つのジオポイントでデフォルトに設定したい。現在の場所から別の場所への方向パスを取得したい場合は、1つの場所でデフォルトの現在の場所を表示したい。
これは、ユーザーの現在地を検索するためのコードです。
public class WhereIActivity extends MapActivity{
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_where_i);
MapView myMapView=(MapView)findViewById(R.id.myMapView);
mapController=myMapView.getController();
myMapView.displayZoomControls(false);
mapController.setZoom(17);
myMapView.setStreetView(true);
myMapView.setTraffic(true);
LocationManager locationManager;
String context = Context.LOCATION_SERVICE;
locationManager = (LocationManager)getSystemService(context);
Criteria crta = new Criteria();
crta.setAccuracy(Criteria.ACCURACY_FINE);
crta.setAltitudeRequired(false);
crta.setBearingRequired(false);
crta.setCostAllowed(true);
crta.setPowerRequirement(Criteria.POWER_LOW);
String provider = locationManager.getBestProvider(crta, true);
// String provider = LocationManager.GPS_PROVIDER;
Location location = locationManager.getLastKnownLocation(provider);
updateWithNewLocation(location);
locationManager.requestLocationUpdates(provider, 2000, 10, locationListener);
}
private final LocationListener locationListener = new LocationListener()
{
@Override
public void onLocationChanged(Location location) {
updateWithNewLocation(location);
}
@Override
public void onProviderDisabled(String provider) {
updateWithNewLocation(null);
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
};
private void updateWithNewLocation(Location location) {
String latLong;
TextView myLocation;
myLocation = (TextView) findViewById(R.id.myLocation);
String addressString = "no address found";
if(location!=null) {
positionOverlay.setLocation(location);
Double geoLat=location.getLatitude()*1E6;
Double geoLng=location.getLongitude()*1E6;
GeoPoint point=new GeoPoint(geoLat.intValue(),geoLng.intValue());
mapController.animateTo(point);
double lat = location.getLatitude();
double lon = location.getLongitude();
latLong = "Lat:" + lat + "\nLong:" + lon;
double lattitude = location.getLatitude();
double longitude = location.getLongitude();
Geocoder gc = new Geocoder(this,Locale.getDefault());
try {
List<Address> addresses= gc.getFromLocation(lattitude, longitude, 1);
StringBuilder sb = new StringBuilder();
if(addresses.size()>0) {
Address address=addresses.get(0);
for(int i=0;i<address.getMaxAddressLineIndex();i++)
sb.append(address.getAddressLine(i)).append("\n");
sb.append(address.getLocality()).append("\n");
sb.append(address.getPostalCode()).append("\n");
sb.append(address.getCountryName());
}
addressString = sb.toString();
}
catch (Exception e) {
}
} else {
latLong = " NO Location Found ";
}
myLocation.setText("Your Current Position is :\n"+ latLong + "\n"+ addressString );
}
@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
}
このユーザーの現在の場所を方向パスのデフォルトに設定する方法:
Intent intent = new Intent(android.content.Intent.ACTION_VIEW,
Uri.parse("http://maps.google.com/maps/?daddr=my+street+address"));
intent.setClassName("com.google.android.apps.maps", "com.google.android.maps.MapsActivity");
startActivity(intent);