Develop Reference

How to click a marker from multiple markers on a map and then go to a activity with info of the markers

I want to create multiple markers on a map, each marker will have information, such as location, address..., and when I click the marker, another activity will show up and show the info of the marker I clicked, and I wrote some codes, the result turns out to be that, for different markers, the info transferred from the markers to the activity is the same, the code is like following:
for (final MyMarkerData object: aaa) {
m = googleMap.addMarker(new MarkerOptions()
.position(object.getLatLng())
.title(object.getTitle())
.snippet(object.getSnippet()));
googleMap.setOnMarkerClickListener(new GoogleMap.OnMarkerClickListener() {
#Override
public boolean onMarkerClick(Marker m) {
Intent intent = new Intent(getActivity(), EventInfo.class);
intent.putExtra("title", object.getTitle());
startActivity(intent);
return false;
}
});
}
the code in the activity is like:
Intent intent = getIntent();
String a = intent.getStringExtra("title");
TextView textview = findViewById(R.id.eventInfo);
textview.setText(a);
when I click three different markers, the TextView showed the same info(actually is different), which is the last info in ArrayList aaa, so what's wrong with this?

googleMap use only 1 OnMarkerClickListener for every Marker clicked event so you set it multiple times in a for loop is useless, the last one will override the previous listener. That's why only the last listener is registered.
Two things to refactor here:
- Call setOnMarkerClickListener only 1 time is enough
- Define a HashMap<Marker, object> to get the right object from the clicked marker
HashMap<Object, Marker> markerMap = new HashMap<Object, Marker>();
googleMap.setOnMarkerClickListener(new GoogleMap.OnMarkerClickListener() {
#Override
public boolean onMarkerClick(Marker m) {
Object obj = markerMap.get(m);
// Use obj for correct data object
}
});
for (final MyMarkerData object: aaa) {
marker = googleMap.addMarker(new MarkerOptions()
.position(object.getLatLng())
.title(object.getTitle())
.snippet(object.getSnippet()));
markerMap.put(aaa, marker)
}

How to open the title of a marker in google maps v.3 when camera arrives above it?

I have a few markers added on a map. I'm using a model class to hold data, so I'm adding the markers using the following code:
LatLng latLng = new LatLng(model.getLat(), model.getLng());
MarkerOptions marker = new MarkerOptions().position(latLng).title(model.getName());
googleMap.addMarker(marker);
I'm also using a method to move the camera to a specific position on user click. My method looks like this:
private void moveCamera(Model model) {
moveCamera(new LatLng(model.getLat(), model.getLng()), DEFAULT_ZOOM);
}
So when the user clicks on the name of a location which is in a list, I'm moving the camera over that location. How can I automatically open the title of that marker, when the camera arrives above that location?
Thanks in advance!

You have this code to create your MarkerOptions:
LatLng latLng = new LatLng(model.getLat(), model.getLng());
MarkerOptions markerOption = new MarkerOptions().position(latLng).title(model.getName());
When you add the Marker to your map just keep a reference to the object:
Marker marker = googleMap.addMarker(markerOption);
Now you can show the info window:
marker.showInfoWindow();

Marker on map after a button click in android

I want to make a marker on my map application after a click event on my activity, I mean when I click on button "accident" a red marker is added to the map With current location coordinates
Thanks

You can do this in your onClickListener:
GoogleMap map = ... // get a map.
Marker marker = map.addMarker(new MarkerOptions()
.position(new LatLng(37.7750, 122.4183))
.title("San Francisco")
.snippet("Population: 776733"));
For further reference, see this answer.

Inside:
#Override
public void onMapReady(GoogleMap arg0) {
....
}
Create a setOnMapClickListener that sets a callback that's invoked when the map is tapped:
mGoogleMap.setOnMapClickListener(new GoogleMap.OnMapClickListener(){
#Override
public void onMapClick(LatLng destination) {
MarkerOptions options = new MarkerOptions();
options.position(destination);
options.title("Lat=" + destination.latitude + ", Long=" + destination.longitude);
Marker marker = mGoogleMap.addMarker(options);
mGoogleMap.animateCamera(CameraUpdateFactory.zoomTo(17));
}
});

Show route and map icon by default - Mapfragment Android

Hi,
1. Please find the route and map icon in the highlighted area.
2. These are shown on touch of the my location blue circle .
3. want to show those icons by default, without the user touching, as soon as the map loads.
Below is the code :
protected void loadMap(GoogleMap googleMap, String latlng) {
if (googleMap != null) {
googleMap.setMyLocationEnabled(true);
googleMap.getUiSettings().setMapToolbarEnabled(true);
googleMap.getUiSettings().setMyLocationButtonEnabled(true);
String[] latlngAry = latlng.split(",");
double lat = Double.parseDouble(latlngAry[0]);
double lng = Double.parseDouble(latlngAry[1]);
LatLng latlong = new LatLng(lat, lng);
BitmapDescriptor defaultMarker =
BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_AZURE);
Marker marker = googleMap.addMarker(new MarkerOptions()
.position(latlong)
.title("My Location")
.icon(defaultMarker));
marker.showInfoWindow();
googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(latlong, 18)); }

The overlay that appears when a marker is clicked, is created and destroyed on-the-spot implicitly. You can't manually show that (yet).
If you must have this functionality, you can create an overlay over your map with 2 ImageViews, and call appropriate intents when they're clicked:
// Directions
Intent intent = new Intent(android.content.Intent.ACTION_VIEW, Uri.parse(
"http://maps.google.com/maps?saddr=51.5, 0.125&daddr=51.5, 0.15"));
startActivity(intent);
// Default google map
Intent intent = new Intent(android.content.Intent.ACTION_VIEW, Uri.parse(
"http://maps.google.com/maps?q=loc:51.5, 0.125"));
startActivity(intent);
Note: you need to change the coordinates based on Marker's getPosition() and the user's location.
Now to hide the default overlay, all you need to do is return true in the OnMarkerClickListener. Although you loose the ability to show InfoWindows and center camera on the marker, you can imitate that simply enough:
mMap.setOnMarkerClickListener(new GoogleMap.OnMarkerClickListener() {
#Override
public boolean onMarkerClick(Marker marker) {
marker.showInfoWindow();
mMap.animateCamera(CameraUpdateFactory.newLatLng(marker.getPosition()));
return true;
}
});

Android Google Map - Clicked marker opens new activity or bigger window

I've been searching for help on implementing OnMarkerClickListener but nothing I've found has worked. This is my marker below and when clicked it only changes colour(light blue). I'm looking for it to open a bigger window so I can put in more info. Is this possible?
googlemap.addMarker(new MarkerOptions()
.position(new LatLng(49.378,-0.3904))
.title("Hello World")
.snippet("This is my test app")
.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_ORANGE)));
The marker works fine above on my Map but now I would like to click on the marker and for it to open a new activity/page or a bigger window, what ever is easier to work with. As I am a real novice at making apps, If anyone who has successfully got a working example please could you put up a link or some code.
Thanks in advance!
Edit:
From the tutorial that was suggested I have changed some of the MainActivity.java.
I've added in OnMarkerClickListener and have chosen to add unimplemented methods to the Public Class
public class MainActivity extends Activity implements LocationListener, OnMarkerClickListener {
Underneath private void setUpMap() I have added to my code: private Marker myMarker, the setonMarkerclick listener and myMarker =, :
private Marker myMarker;
{
googlemap.setOnMarkerClickListener(this);
myMarker = googlemap.addMarker(new MarkerOptions()
.position(new LatLng(LatLng))
.title("Hello World")
.snippet("My First App")
.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_ORANGE)));
}
In the unimplemented method at the bottom I have:
#Override
public boolean onMarkerClick(Marker arg0) {
// TODO Auto-generated method stub
return false;
What do I need to change in the public Boolean OnMarkerClick part?
I'm not getting any errors but its just not working. What else do I have to add in or change?
Any help is appreciated!

Marker click events
Don't snap to marker after click in android map v2
Quoting from the above post
You can use an OnMarkerClickListener to listen for click events on the marker. To set this listener on the map, call GoogleMap.setOnMarkerClickListener(OnMarkerClickListener). When a user clicks on a marker, onMarkerClick(Marker) will be called and the marker will be passed through as an argument. This method returns a boolean that indicates whether you have consumed the event (i.e., you want to suppress the default behavior). If it returns false, then the default behavior will occur in addition to your custom behavior. The default behavior for a marker click event is to show its info window (if available) and move the camera such that the marker is centered on the map.
https://developers.google.com/maps/documentation/android/reference/com/google/android/gms/maps/GoogleMap.OnMarkerClickListener.
Use OnMarkerClickListener on your marker.
Check the link for code snippets
Google Maps API v2: How to make markers clickable?
Example: Works on my phone
Marker source, destination;
GoogleMap mMap;
mMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
source = mMap.addMarker(new MarkerOptions()
.position(sc)
.title("MyHome")
.snippet("Bangalore")
.icon(BitmapDescriptorFactory.fromResource(R.drawable.pin)));
destination = mMap.addMarker(new MarkerOptions()
.position(lng)
.title("MapleBear Head Office")
.snippet("Jayanager")
.icon(BitmapDescriptorFactory.fromResource(R.drawable.pin)));
mMap.setOnMarkerClickListener(marker -> {
if (marker.getTitle().equals("MyHome")) // if marker source is clicked
Toast.makeText(MainActivity.this, marker.getTitle(), Toast.LENGTH_SHORT).show();// display toast
return true;
});

This code handles the maker click event and loads a new layout (XML) with some information:
/**
* adding individual markers, displaying text on on marker click on a
* bubble, action of on marker bubble click
*/
private final void addLocationsToMap() {
int i = 0;
for (Stores store : storeList) {
LatLng l = new LatLng(store.getLatitude(), store.getLongtitude());
MarkerOptions marker = new MarkerOptions()
.position(l)
.title(store.getStoreName())
.snippet("" + i)
.icon(BitmapDescriptorFactory
.defaultMarker(BitmapDescriptorFactory.HUE_GREEN));
googleMap.addMarker(marker);
++i;
}
googleMap.setOnInfoWindowClickListener(new OnInfoWindowClickListener() {
#Override
public void onInfoWindowClick(Marker marker) {
try {
popUpWindow.setVisibility(View.VISIBLE);
Stores store = storeList.get(Integer.parseInt(marker
.getSnippet()));
// set details
email.setText(store.getEmail());
phoneNo.setText(store.getPhone());
address.setText(store.getAddress());
// setting test value to phone number
tempString = store.getPhone();
SpannableString spanString = new SpannableString(tempString);
spanString.setSpan(new UnderlineSpan(), 0,
spanString.length(), 0);
phoneNo.setText(spanString);
// setting test value to email
tempStringemail = store.getEmail();
SpannableString spanString1 = new SpannableString(tempStringemail);
spanString1.setSpan(new UnderlineSpan(), 0, spanString1.length(), 0);
email.setText(spanString1);
storeLat = store.getLatitude();
storelng = store.getLongtitude();
} catch (ArrayIndexOutOfBoundsException e) {
Log.e("ArrayIndexOutOfBoundsException", " Occured");
}
}
});
}

If you need the event Click in a market,this code it's the solution.
private GoogleMap mGoogleMap;
mGoogleMap.setOnMarkerClickListener(new GoogleMap.OnMarkerClickListener()
{
#Override
public boolean onMarkerClick(Marker arg0) {
if(arg0 != null && arg0.getTitle().equals(markerOptions2.getTitle().toString())); // if marker source is clicked
Toast.makeText(menu.this, arg0.getTitle(), Toast.LENGTH_SHORT).show();// display toast
return true;
}
});
Good Luck

I suggest use of OnInfoWindowClickListener, it will trigger when you click on marker and then the snippet.
Use setTag to attach any object with the marker.
Marker marker = mMap.addMarker(markerOptions);
marker.setTag(myObject);
and the listener
mMap.setOnInfoWindowClickListener(new OnInfoWindowClickListener() {
#Override
public void onInfoWindowClick(Marker arg0) {
MyObject mo = (MyObject )arg0.getTag();
}
});

Below code to used for Kotlin when user click on marker to perform any action
googleMap!!.setOnMarkerClickListener { marker ->
if (marker.title == "Marker1")
Log.d(TAG, "Clicked on Marker1")
true
}