I Have an address that I would like to know the coordinates of. For instance the address is "Skillman Ave" Queens, NY. The coordinates is: 40.747281, -73.9283169 according to maps.google.com. In my app I have a function like this:
public GeoPoint addressToGeo(String adr) {
Geocoder coder = new Geocoder(this);
List<Address> address = null;
GeoPoint coordinates;
try {
address = coder.getFromLocationName(adr, 1);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if (address == null) {
return null;
}
Address location = address.get(0);
location.getLatitude();
location.getLongitude();
coordinates = new GeoPoint((int) (location.getLatitude() *1E6),
(int) (location.getLongitude() * 1E6));
return coordinates;
}
Which takes an address as parameter, and hopefully it will return the coordinates. My debugger says the the first element in the list adress contains this information:
[Address[addressLines=[0:"Skillman Ave",1:"Queens, New York",2:"Amerikas forente stater"],feature=Skillman Ave,admin=New York,sub-admin=Queens,locality=Queens,thoroughfare=Skillman Ave,postalCode=null,countryCode=US,countryName=Amerikas forente stater,hasLatitude=true,latitude=40.747281,hasLongitude=true,longitude=-73.9283169,phone=null,url=null,extras=null]]
which seems correct if you look at the latitude and longitude variables. But when I type in this code:
GeoPoint test;
test = addressToGeo("Skillman Ave");
double latitude = test.getLatitudeE6();
double longitude = test.getLongitudeE6();
String lat = Double.toString(latitude);
String lng = Double.toString(longitude);
String total = lat + " " + lng;
toAdress.setText(total);
the toAdress textField will contain 4.0747281E7, -7.3928316E7 The comma is not in the right spot, and what is the E7 in the end of each double?
'E7' is notation meaning that you need to multiply by 10^7 to get the actual number. In this case it would give you 40747281. You then need to format that into a proper coordinate.
Ankit's code looks like it might do that, but test to make sure.
Try this.
String lat = Double.toString(latitude);
String lng = Double.toString(longitude);
lat= (float) (lat / 1E6);
lng = (float)(lon / 1E6);
System.out.println("lat :" + (float) lat / 1E6);
System.out.println("lon :" + (float) lon / 1E6);
You've got all the right data, so this question is really about formatting a double. Use DecimalFormat.
Use this to display the lat/lon points in your test:
DecimalFormat formatter = new DecimalFormat("0.0000000");
String lat = formatter.format(test.getLatitudeE6() / 1E6);
String lon = formatter.format(test.getLongitudeE6() / 1E6);
toAddress.setText(lat + " " + lon);
Related
How can i have bot the lat and log in one textview separated with a comma?
I tried as below and i am getting the "do not concatenate text displayed with settext" warning!
gpsTracker = new GpsTracker( MainActivity.this);
if(gpsTracker.canGetLocation()){
double latitude = gpsTracker.getLatitude();
double longitude = gpsTracker.getLongitude();
textviewGPSLocation.setText(String.valueOf(latitude) + "/," + String.valueOf ( longitude ));
You can format your string like this
double latitude = gpsTracker.getLatitude();
double longitude = gpsTracker.getLongitude();
String text = String.format("%1$2f / %2$2f", latitude, longitude);
textviewGPSLocation.setText(text);
DIRECTION_URL_API = "https://maps.googleapis.com/maps/api/directions/json?"
DIRECTION_URL_API + "origin=" + origin + "&destination=" + destination + "&sensor=true" + "&mode=" +typeOpt+"&key=" + GOOGLE_API_KEY ;
I am using this format but its not working
Please suggest me :)
You can find distance following way
http://maps.googleapis.com/maps/api/directions/json?origin=21.1702,72.8311&destination=21.7051,72.9959&sensor=false&units=metric&mode=driving
origin=lat1,long1
destination=lat2,long2
Please use the below method to calculate the distance between two points
/**
* Returns Distance in kilometers (km)
*/
public static String distance(double startLat, double startLong, double endLat, double endLong) {
Location startPoint = new Location("locationA");
startPoint.setLatitude(startLat);
startPoint.setLongitude(startLong);
Location endPoint = new Location("locationA");
endPoint.setLatitude(endLat);
endPoint.setLongitude(endLong);
return String.format("%.2f", startPoint.distanceTo(endPoint) / 1000); //KMs
}
Method usage -
String mDistance = distance(startLat,
startLong,
endLat,endLng)).concat("km");
I want to show a pointer on a map after entering address. What would be best solution ? Couldn't find any tutorials on this problem. I found a code to get latitude and longitude, what to do next ?
Geocoder coder = new Geocoder(this);
List<Address> address;
try {
address = coder.getFromLocationName(strAddress,5);
if (address == null) {
return null;
}
Address location = address.get(0);
location.getLatitude();
location.getLongitude();
p1 = new GeoPoint((int) (location.getLatitude() * 1E6),
(int) (location.getLongitude() * 1E6));
return p1;
}
addmarker() function will help you to achieve this
myMap.addMarker(new MarkerOptions().position(yourLatLng).icon(BitmapDescriptorFactory.fromResource(R.drawable.yourmarkericon)));
where myMap is the Object of GoogleMap and yourLatlng is Latlng Where you want to add marker and yourmarkericon is icon which you want to display on map. Use blow link for more information
https://developer.android.com/reference/com/google/android/gms/maps/model/Marker.html
I trying to match hardcoded latitude an longitude with dynamic latitude and longitude, but its not showing correct output, can anyone help me to sort out this error
My code is
String Log = "-122.084095";
String Lat = "37.422005";
try {
if ((Lat.equals(latitude)) && (Log.equals(longitude))) {
AudioManager audiM = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
audiM.setRingerMode(AudioManager.RINGER_MODE_SILENT);
Toast.makeText(getApplicationContext(),
"You are at home",
Toast.LENGTH_LONG).show();
} else {
AudioManager auMa = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
auMa.setRingerMode(AudioManager.RINGER_MODE_NORMAL);
Toast.makeText(getApplicationContext(),
"You are at office ", Toast.LENGTH_LONG)
.show();
}
} catch (Exception e) {
e.printStackTrace();
}
it always goes for else part...
You don't want to use a String comparison here as you can't guarantee the level of accuracy with the real-time location.
The best way to handle this would be to determine the distance between the points and then determine if it's close enough for you to consider, approx, the same.
For this, we use distanceBetween or distanceTo
Docs are here and here
Examples can be found here. Here's one of those examples:
Location locationA = new Location("point A");
locationA.setLatitude(pointA.getLatitudeE6() / 1E6);
locationA.setLongitude(pointA.getLongitudeE6() / 1E6);
Location locationB = new Location("point B");
locationB.setLatitude(pointB.getLatitudeE6() / 1E6);
locationB.setLongitude(pointB.getLongitudeE6() / 1E6);
double distance = locationA.distanceTo(locationB);
The latitude and longitude are variables which vary from point to point, matter of fact they keep on changing while standing on the same spot, because it is not precise.
Instead of comparing the Strings, take a rounded value of the lat and long (in long or float ) and check those values within a certain range. That will help you out with the "Home" and "Office " thing.
For e.g :
String Log = "22.084095";
String Lat = "37.422005";
double lng=Double.parseDouble(Log);
double lat=Double.parseDouble(Lat);
double upprLogHome=22.1;
double lwrLogHome=21.9;
double upprLatHome=37.5;
double lwrLatHome=37.3;
// double upprLogOfc=;
// double lwrLogOfc=;
// double upprLatOfc=;
// double lwrLatOfc=;
if(lng<upprLogHome && lng>lwrLogHome && lat<upprLatHome &&lat>lwrLatHome )
{
System.out.println("You are Home");
}
/* else if(lng<upprLogOfc && lng>lwrLogOfc && lat<upprLatOfc &&lat>lwrLatOfc )
{
System.out.println("You are Home");
}*/
else
System.out.println("You are neither Home nor Ofc");
But for the negative lat long you have to reverse the process of checking.
your matching is okay but you probably should not check for a gps location like this.
You should convert the location to something where you can check that you are in 10m radius of the location.
A nicer way would be to leave the long/lat as doubles and compare the numbers.
if(lat > HOME_LAT - 0.1 && lat < HOME_LAT + 0.1 && ...same for lon... ){}
Try this,
Use google map api to pass lat and long value you will get formatted address. And also pass dynamic lat and lng value same google api you will get formatted address. And then match two formatted address you will get result. i suggest this way you can try this
Use this google api. http://maps.googleapis.com/maps/api/geocode/json?latlng=11.029494,76.954422&sensor=true
Reena, its very easy, Check out below code. You need to use "equalsIgnoreCase()" instead of
"equals".
if ((Lat.equalsIgnoreCase(latitude)) && (Log.equalsIgnoreCase(longitude))) {
should work
Example below :
// Demonstrate equals() and equalsIgnoreCase().
class equalsDemo {
public static void main(String args[]) {
String s1 = "Hello";
String s2 = "Hello";
String s3 = "Good-bye";
String s4 = "HELLO";
System.out.println(s1 + " equals " + s2 + " -> " +
s1.equals(s2));
System.out.println(s1 + " equals " + s3 + " -> " +
s1.equals(s3));
System.out.println(s1 + " equals " + s4 + " -> " +
s1.equals(s4));
System.out.println(s1 + " equalsIgnoreCase " + s4 + " -> " +
s1.equalsIgnoreCase(s4));
}
}
You can print dynamice Latitute and Longitute to Logcat and check with hardcoded Latitute and Longitute
I've an app that gets the current user's location from a location service. When i get the lon and lat from the location object, they are as follows
lat = 53.653770446777344
lon = -1.520833969116211
.
I then store these in a GeoPoint object which is passed to a query string for Google Servers. This eventually plots a polyline between the current location and a destination.
It all works fine and the polyline is drawn, however it is drawn incorrectly as the current location is set about 100 mile away. I've logged out some values and there is a loss of precision when the lon and lat get passed to the geopoint.
How can i get around this.
#Override
public void onLocationChanged(Location location) {
lati = (location.getLatitude());
lngi = (location.getLongitude());
startAddr = new GeoPoint((int)lati, (int)lngi);
Log.e(TAG, "lat = " + lati);
Log.e(TAG, "lon = " + lngi);
Log.e(TAG, "lat after cast = " + (int)(lati * 1000000));
Log.e(TAG, "lon after cast = " + (int)(lngi * 1000000));
locationManager.removeUpdates(this);
StringBuilder sb = new StringBuilder();
sb.append("http://maps.google.com/maps/api/directions/json?origin=");
sb.append(startAddr);
sb.append("&destination=");
sb.append(endAddr);
sb.append("&sensor=false");
stringUrl = sb.toString();
Log.e(TAG, "url = " + stringUrl);
AsyncGetRoute agr = new AsyncGetRoute();
agr.execute();
.
11-15 12:45:17.280: E/GetClientDirections(23220): lat = 53.653770446777344
11-15 12:45:17.280: E/GetClientDirections(23220): lon = -1.520833969116211
11-15 12:45:17.280: E/GetClientDirections(23220): lat after cast = 53653770
11-15 12:45:17.280: E/GetClientDirections(23220): lon after cast = -1520833
11-15 12:45:17.290: E/GetClientDirections(23220): url = http://maps.google.com/maps/api/directions/json?origin=53,-1&destination=AL73EZ&sensor=false
This is the problem:
startAddr = new GeoPoint((int)lati, (int)lngi);
This truncates the fractions, so effectively for your input, your result is:
startAddr = new GeoPoint(53, -1);
As the API doc says, the GeoPoint accepts integer values: the two angles multiplied by 10^6. And because of this, the coordinates given would correspond to these values:
Latitude: 0.000053
Longitude: -0.000001
You should multiply first with 10^6, then truncate, so you should try:
startAddr = new GeoPoint((int)(lati*1000000.0), (int)(lngi*1000000.0));