Develop Reference

Move the marker along the with map as the user moves

I have implemented google map into my app. I have added a custom marker at my current location.I want to move the marker as the user moves, along with the map. I want to implement the functionality as in google maps navigation. While googling i found the following links but did not get the result. so can any one help me out ?
I have added this in onLocationChanged()
LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());
sourceLocation = latLng;
startPoint = new GeoPoint(latLng.latitude,latLng.longitude);
forNavigation = location;
// animation
mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
// Zoom in the Google Map
mMap.animateCamera(CameraUpdateFactory.zoomTo(15));
// mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(mPositionMarker.getPosition(), 15));
mMap.animateCamera(CameraUpdateFactory.newLatLng(new LatLng(location
.getLatitude(), location.getLongitude())));
These are the links which i found
Google map: moving marker and map together smoothly along with user?
How to smoothly keep moving current location marker in Google Maps v2 android

here is two solution you have.
Use onlocationtrue then it show you blue dot as your current location.
Use fused api for current location and create you marker in locationchanged.
for fused api you can check from here.
thanks

Differentiate two markers at same place in android

Here in the code am displaying markers but if many markers have same latitude and logitude then the icons generated must have different colors or it must be moved a little bit so that we must be able to find that its in that location. Is it possible to do?
private void drawMarker(LatLng point, TextView icTag) {
Bitmap icBitmap = null;
icGen.setStyle(IconGenerator.STYLE_ORANGE);
icGen.setContentRotation(0);
icGen.setContentPadding(10,10,10,10);
tvImage.setTypeface(imageFont);
icGen.setContentView(tvImage);
icBitmap = icGen.makeIcon();
MarkerOptions markerOptions = new MarkerOptions()
.position(latlng)
.snippet("" + snip).position(point)
.icon(BitmapDescriptorFactory
.fromBitmap(icBitmap));
marker = googleMap.addMarker(markerOptions);
}

you can setup a bit of logic in your code so that older items are either bigger or with different colors or with different anchors.
Of course you need to check the distance of points before doing that, and i would suggest to use clustering which works fine for this kind of tasks

Google Maps CameraUpdate moves to the wrong coordinates

I am writing an app that uses Google Maps Android API V2. The app will center on a specific latitude and longitude (this position is hard coded to 36.5323, -87.3546) when the user turns on the map and get the user's position every 15 seconds. However, when the user first turns the camera on it centers to (8.407168163601076,-87.35459994524717).
This only happens when the user first turns the map on. If the map is turned off and then turned back on, it centers on the correct coordinates. This has only happened on a Nexus 9. I have two other devices for testing where it properly centers the map on the first try.
This is the code I call to center the map:
LatLng pos = new LatLng(36.5323, -87.3546);
CameraUpdate center = CameraUpdateFactory.newLatLng(pos);
CameraUpdate zoom = CameraUpdateFactory.zoomTo(14);
map.moveCamera(center);
map.animateCamera(zoom);
Can anyone tell me why this is happening?

try this
LatLng pos= new LatLng(LATITUDE, LONGITUDE);
CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngZoom(latLng, 16);
map.animateCamera(cameraUpdate);

code to add markers to map using android google maps v2

I have lat&long values from database.how to display markers based on lat &long values using android google map api v2.In original android google maps,we display markers based on concept itemoverlay. In v2,I dont know how to display markers.
dbAdapter.open();
Cursor points = dbAdapter.clustercall(Btmlft_latitude, toprgt_latitude,
Btmlft_longitude, toprgt_longitude, gridsize1);
int c = points.getCount();
Log.d("count of points", "" + c);
if (points != null) {
if (points.moveToFirst()) {
do {
int latitude = (int) (points.getFloat(points
.getColumnIndex("LATITUDE")) * 1E6);
int longitude = (int) (points.getFloat(points
.getColumnIndex("LONGITUDE")) * 1E6);
mapView.addMarker(new MarkerOptions().position(
new LatLng(latitude, longitude)).icon(
BitmapDescriptorFactory.defaultMarker()));
} while (points.moveToNext());
}
}
points.close();
dbAdapter.close();
That is mycode.I am getting lat&long values from database,but how to add markers based on lat &long values to map.
I read the android google maps api v2.In that have only give statically added data of markers

Use the Marker Class
An icon placed at a particular point on the map's surface. A marker icon is drawn oriented against the device's screen rather than the map's surface; i.e., it will not necessarily change orientation due to map rotations, tilting, or zooming.
A marker has the following properties:
Anchor
The point on the image that will be placed at the LatLng position of the marker. This defaults to 50% from the left of the image and at the bottom of the image.
Position
The LatLng value for the marker's position on the map. You can change this value at any time if you want to move the marker.
Title
A text string that's displayed in an info window when the user taps the marker. You can change this value at any time.
Snippet
Additional text that's displayed below the title. You can change this value at any time.
Icon
A bitmap that's displayed for the marker. If the icon is left unset, a default icon is displayed. You can specify an alternative coloring of the default icon using defaultMarker(float). You can't change the icon once you've created the marker.
Drag Status
If you want to allow the user to drag the marker, set this property to true. You can change this value at any time. The default is true.
Visibility
By default, the marker is visible. To make the marker invisible, set this property to false. You can change this value at any time.
GoogleMap map = ... // get a map.
// Add a marker at San Francisco.
Marker marker = map.addMarker(new MarkerOptions()
.position(new LatLng(37.7750, 122.4183))
.title("San Francisco")
.snippet("Population: 776733"));

You have to use the method GoogleMap.addMarker(MarkerOptions);
I've explained this in a tutorial on my blog:
http://bon-app-etit.blogspot.be/2012/12/add-informationobject-to-marker-in.html
On this blog, you'll find some more posts concerning the new Maps API:
Move the map to current or some location
Create the custom InfoWindow
Associate geodata or objects to a marker

I'm guessing the issue is that you are multiplying your latitude/longitude values by 1E6 instead of dividing them by 1E6. If your stored values came from GeoPoints, that might be your issue. Otherwise, the way you are adding the Markers is fine and should work.
i.e. the lat/lng values you pass to new LatLng() should look like 45.4,-95.5 NOT 45400000,-95500000
Check out the following code:
//mMap is a GoogleMap and point is a GeoPoint
this.mMap.addMarker(getMarker(point, drawableId))
...
public MarkerOptions getMarker(GeoPoint point, int drawableId)
{
return new MarkerOptions()
.position(new LatLng(point.getLatitudeE6() / 1000000.0, point.getLongitudeE6() / 1000000.0))
.icon(BitmapDescriptorFactory.fromResource(drawableId));
}

Android Google Maps v2 - set zoom level for myLocation

Is it possible to change the zoom level for myLocation with the new Google Maps API v2?
If you set GoogleMap.setEnableMyLocation(true);, you get a button on the map to find your location.
If you click on it, then the map will bring you to your location and zoom it in to some level. Can I change this zoom to be less or more?

It's doubtful you can change it on click with the default myLocation Marker. However, if you would like the app to automatically zoom in on your location once it is found, I would check out my answer to this question
Note that the answer I provided does not zoom in, but if you modify the onLocationChanged method to be like the one below, you can choose whatever zoom level you like:
#Override
public void onLocationChanged(Location location) {
if( mListener != null ) {
mListener.onLocationChanged( location );
//Move the camera to the user's location and zoom in!
mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(location.getLatitude(), location.getLongitude()), 12.0f));
}
}

You can also use:
mMap.animateCamera( CameraUpdateFactory.zoomTo( 17.0f ) );
To just change the zoom value to any desired value between minimum value=2.0 and maximum value=21.0.
The API warns that not all locations have tiles at values at or near maximum zoom.
See this for more information about zoom methods available in the CameraUpdateFactory.

with location - in new GoogleMaps SDK:
mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(chLocation,14));

Here are the approximate zoom levels and what they do :
1: World
5: Landmass/continent
10: City
15: Streets
20: Buildings
so you could do something like this to zoom to street level for example (note the "15f" below is street level) :
override fun onMapReady(googleMap: GoogleMap?) {
googleMap?.mapType = GoogleMap.MAP_TYPE_NORMAL
googleMap?.addMarker(MarkerOptions()
.position(LatLng(37.4233438, -122.0728817))
.title("cool place")
.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_ROSE)))
googleMap?.animateCamera(CameraUpdateFactory.newLatLngZoom(LatLng(37.4233438, -122.0728817), 15f))
note: just so you know different locations can have different max zoom levels. try to use googleMap.maxZoomLevel if you want to get the max or min zoom levels.

Slightly different solution than HeatfanJohn's, where I change the zoom relatively to the current zoom level:
// Zoom out just a little
map.animateCamera(CameraUpdateFactory.zoomTo(map.getCameraPosition().zoom - 0.5f));

In onMapReady() Method
change the zoomLevel to any desired value.
float zoomLevel = (float) 18.0;
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(latLng, zoomLevel));

you have to write only one line in maps_activity.xml
map:cameraZoom="13"
I hope this will solve your problem...

You can use
CameraUpdate center = CameraUpdateFactory.newLatLng(new LatLng(location.getLatitude(), location.getLongitude()));
CameraUpdate zoom = CameraUpdateFactory.zoomTo(12);

Even i recently had the same query....some how none of the above mentioned setmaxzoom or else map:cameraZoom="13" did not work
So i found that the depenedency which i used was old
please make sure your dependency for google maps is correct
this is the newest use this
compile 'com.google.android.gms:play-services:11.8.0'

mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(currentPlace,15));
This is will not have animation effect.

I tried with "mMap.animateCamera( CameraUpdateFactory.zoomTo( 17.0f ) );" but it didn't work for me. So I used this animation for zooming in on start.
LatLng loc = new LatLng(33.8688, 151.2093);
mMap.addMarker(new MarkerOptions().position(loc).title("Sydney"));
mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(loc, 18), 5000, null);

Location locaton;
double latitude = location.getlatitude;
double longitude = location.getlongitude;
If you want to save the zoom or get it all the time,you just need to call the following
int zoom = mMap.getCameraPosition().zoom;
//To set that just use
mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(getlatitude(), getlongitude),zoom);

Most of the answers above are either deprecated or the zoom works by retaining the current latitude and longitude and does not zoom to the exact location you want it to. Add the following code to your onMapReady() method.
#Override
public void onMapReady(GoogleMap googleMap) {
//Set marker on the map
googleMap.addMarker(new MarkerOptions().position(new LatLng(0.0000, 0.0000)).title("Marker"));
//Create a CameraUpdate variable to store the intended location and zoom of the camera
CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngZoom(new LatLng(0.0000, 0.0000), 13);
//Animate the zoom using the animateCamera() method
googleMap.animateCamera(cameraUpdate);
}