Develop Reference

How to draw a line between static view's center points to google map marker?

I have a static Linear layout and a google map in my xml file. I want to draw a straight line between center bottom of linear layout to the marker position.I have tried using polylines in the maps but it is also drawing between markers in the maps.
Below is my xml file -
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/rel_m1"
android:layout_above="#+id/bottom_ll"
android:id="#+id/frameLayout">
<fragment
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/map"
tools:context="com.business.introslider.MapsActivity"
android:name="com.google.android.gms.maps.SupportMapFragment" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:minHeight="50dp"
android:layout_marginTop="10dp"
android:layout_marginLeft="15dp"
android:layout_marginRight="15dp"
android:orientation="vertical"
android:id="#+id/pickup_ll"
android:onClick="OpenPickup"
android:elevation="30dp"
android:background="#ffffff">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Pickup from"
android:layout_marginTop="5dp"
android:textSize="14sp"
android:textColor="#555555"
android:padding="5dp"
android:drawableLeft="#drawable/s_green"
android:drawablePadding="5dp"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Pin location"
android:layout_marginTop="5dp"
android:textSize="16sp"
android:textColor="#000000"
android:padding="5dp"
android:id="#+id/text_pickup_location"
android:layout_marginBottom="5dp"/>
</LinearLayout>
</FrameLayout>
and also my java code is as below -
public void setCurrentLocation(){
try {
//to show my current location in the map
mMap.setMyLocationEnabled(true);
mMap.setOnMapClickListener(new GoogleMap.OnMapClickListener() {
#Override
public void onMapClick(LatLng latLng) {
Toast.makeText(getApplicationContext(), latLng.toString(), Toast.LENGTH_LONG).show();
}
});
LocationManager locationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
//to request location updates
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 1, 1, this);
ViewTreeObserver vto = pickup_ll.getViewTreeObserver();
vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
#Override
public void onGlobalLayout() {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) {
pickup_ll.getViewTreeObserver().removeGlobalOnLayoutListener(this);
} else {
pickup_ll.getViewTreeObserver().removeOnGlobalLayoutListener(this);
}
float x = pickup_ll.getX() + pickup_ll.getMeasuredWidth() / 2;
float y = pickup_ll.getY() + pickup_ll.getMeasuredHeight() / 2;
// float x= getWindowManager().getDefaultDisplay().getWidth()/2;
point1 = new Point(Math.round(x),Math.round(y));
Log.e(TAG, "point1===" + point1);
LatLng latLng1 = mMap.getProjection().fromScreenLocation(point1);
Log.e(TAG,"latLng1==="+latLng1);
points.add(latLng1);
}
});
#Override
public void onLocationChanged(Location location) {
Log.e(TAG, "onlocation changed");
//To clear map data
mMap.clear();
//To hold location
if(latLng !=null) {
Log.e(TAG, "latLng onlocation changed==" + latLng);
}
else {
latLng = new LatLng(location.getLatitude(), location.getLongitude());
}
//to create a marker in the app
MarkerOptions markerOptions = new MarkerOptions();
markerOptions.position(latLng);
markerOptions.title("My Location");
PolylineOptions polylineOptions = new PolylineOptions();
polylineOptions.color(Color.BLACK);
polylineOptions.width(2);
points.add(latLng);
polylineOptions.addAll(points);
mMap.addPolyline(polylineOptions);
mMap.addMarker(markerOptions);
//opening position with some zoom level in the app
mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(latLng, 17.0f));
}
I am calling this setCurrentLocation() in onMapReady method of googleApiClient. Any help would be appreciated.

Have you trying to do drawing path in this way?
https://github.com/hiepxuan2008/GoogleMapDirectionSimple/
this will let you to draw a path between tow places. Make sure you change the API key.

maintain custom marker info window on configuration change

Question
Why does my custom infowindow not 'inflate' after a configuration change?
Summary
I have an app that places a marker on a map using MarkerManager, and sets a custom info-window using setInfoWindowAdapter.
After loading the app and clicking on the marker, the info-window correctly displays my custom layout.
However, after rotating the app so that the configuration changes, selecting the marker no longer displays the custom info-window, and instead only displays the generic 'title'.
What have I missed in all the hours of reading and tutorials that means I'm not correctly implementing this?
Code
Here is a stripped-down version of my app to replicate the issue
MapsActivity
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback {
private GoogleMap mMap;
MarkerManager.Collection mMarkerManagerCollection;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
if(savedInstanceState == null){
mapFragment.setRetainInstance(true); // maintains the map fragment on orientation changes
}
}
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
MarkerManager mMarkerManager = new MarkerManager(mMap);
mMap.setInfoWindowAdapter(mMarkerManager);
mMarkerManagerCollection = mMarkerManager.newCollection("myMarker");
mMarkerManagerCollection.setOnInfoWindowAdapter(new GoogleMap.InfoWindowAdapter(){
#Override
public View getInfoWindow(Marker marker) {
return null;
}
#Override
public View getInfoContents(Marker marker) {
View v = getLayoutInflater().inflate(R.layout.info_window, null);
TextView tv = (TextView) v.findViewById(R.id.myTv);
tv.setText("hello world, this is my marker");
return v;
}
});
// Add a marker in Sydney and move the camera
LatLng sydney = new LatLng(-34, 151);
MarkerOptions options = new MarkerOptions()
.position(sydney)
.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED))
.flat(true)
.title("Marker in Sydney");
Marker marker = mMarkerManagerCollection.addMarker(options);
marker.setTag("test marker");
mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney));
}
}
info_window.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ImageView
android:layout_width="93dp"
android:layout_height="96dp"
android:id="#+id/rect_load"
android:padding="2dp"
android:src="#mipmap/ic_launcher"
/>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="#+id/myTv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="myText"/>
</LinearLayout>
</LinearLayout>
</LinearLayout>
Gradle
compile 'com.android.support:appcompat-v7:25.0.0'
compile 'com.google.android.gms:play-services:9.8.0'
compile 'com.google.maps.android:android-maps-utils:0.4'
compile 'com.google.android.gms:play-services:9.8.0'

The problem is that you are creating and populating a new MarkerManager on each onMapReady call. As onMapReady gets called when the orientation changes but you are not removing old markers, the map has two markers on the same position.
When you click the marker after the orientation changes, the old marker is triggered and you see the default behaviour (show title). If you click the marker again you will see your info window.
One possible solution can be calling mMap.clear(); on the onMapReady before adding markers.

Center fixed marker in android v2 mapview

I want to set fixed marker in the center point of mapview while dragging map.It has been done at android Map V1 google mapview. But now it's deprecated.Now my question is, is it possible in android Map V2 google mapview ?(I have tried.but map doesn't show)

So you want something like a cross-hairs on the center of map, right?
I have not used MapView. But I have used Map Fragment, and the way i implement a fix marker on the map is use a ImageView, So you will end up with something like below:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<fragment
android:id="#+id/fragment1"
android:name="com.google.android.gms.maps.MapFragment"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true" />
<ImageView
android:id="#+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:src="#drawable/cross_hairs" />
</RelativeLayout>
You could swap the MapFragment with MapView.
Placing the marker on the map will be inefficient, since you will need to keep updating the marker when the user pans the map.
Hope it helps!

I'm betting you used getMapCenter() which, as per Google Maps for Android v2, no longer available to use. But no worries, just use this:
GoogleMap.getCameraPosition().target
It will return a LatLng object which basically represents the center of the map. You can then use it to reposition the marker to the center every time there's a drag event by assigning an OnCameraChangedListener to your GoogleMap.
yourGMapInstance.setOnCameraChangeListener(new OnCameraChangedListener() {
#Override
public void onCameraChange (CameraPosition position) {
// Get the center of the Map.
LatLng centerOfMap = yourGMapInstance.getCameraPosition().target;
// Update your Marker's position to the center of the Map.
yourMarkerInstance.setPosition(centerOfMap);
}
});
There. I hope this helped!

Notice that setOnCameraChangeListener() has been deprecated, so you can use the new camera listeners (OnCameraIdleListener, OnCameraMoveListener, OnCameraMoveStartedListener, OnCameraMoveCanceledListener), for example:
map.setOnCameraMoveListener(new GoogleMap.OnCameraMoveListener() {
#Override
public void onCameraMove() {
// Get the center of the map
LatLng center = map.getCameraPosition().target;
......
}
});
for more information, read this: https://developers.google.com/maps/documentation/android-api/events

Simply goto the XML File: Add Image View in map fragment and set the gravity to center. Then goto the Java File and add the following java code into your onMayReady Function:
<fragment
android:id="#+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_constraintBottom_toTopOf="#+id/bottom_navigation"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="#+id/linearLayout2" />
<ImageView
android:id="#+id/imageView_map_marker"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="5dp"
android:layout_marginTop="5dp"
android:layout_marginEnd="5dp"
android:layout_marginBottom="17dp"
android:background="?attr/selectableItemBackgroundBorderless"
android:clickable="true"
android:layout_gravity="center"
android:tooltipText="Select Location"
app:srcCompat="#drawable/ic_baseline_location_red" />
mMap.setOnCameraMoveListener(new GoogleMap.OnCameraMoveListener() {
#Override
public void onCameraMove() {
mMap.clear();
binding.imageViewMapMarker.setVisibility(View.VISIBLE);
}
});
mMap.setOnCameraIdleListener(new GoogleMap.OnCameraIdleListener() {
#Override
public void onCameraIdle() {
binding.imageViewMapMarker.setVisibility(View.GONE);
selectedLatitude=mMap.getCameraPosition().target.latitude;
selectedLongitude=mMap.getCameraPosition().target.longitude;
MarkerOptions marker = new MarkerOptions().position(mMap.getCameraPosition().target).title("")
.icon(bitmapDescriptorFromVector(getApplicationContext(), R.drawable.ic_baseline_location_red));
mMap.addMarker(marker);
}
});

Google map for android my location custom button

How can I change google map my location default button?
I set my location enable and map draw standard image to find location, is it possible to change default image?

See below xml file to custom button:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<fragment
android:id="#+id/maps"
android:name="pl.mg6.android.maps.extensions.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="5dp" >
<ImageView
android:id="#+id/imgMyLocation"
android:layout_width="40dp"
android:layout_height="40dp"
android:scaleType="fitXY"
android:src="#drawable/track_my_location" />
</LinearLayout>
</RelativeLayout>
Then in java class, declare your location button:
private ImageView imgMyLocation;
imgMyLocation = (ImageView) findViewById(R.id.imgMyLocation);
Click Event:
imgMyLocation.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
getMyLocation();
}
Get Location Method, in that just pass your current latitude and longitude.
private void getMyLocation() {
LatLng latLng = new LatLng(Double.parseDouble(getLatitude()), Double.parseDouble(getLongitude()));
CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngZoom(latLng, 18);
googleMap.animateCamera(cameraUpdate);
}
});

With a simple trick, you can replace the my location button with a custom one.
Customize the Layout of your new button.
Set my location enabled in maps api.
Hide default button of my location.
call click method of my location on your custom button click.
1. Customize the layout of your new button
add a new button to your desired location in layout file of map activity.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:map="http://schemas.android.com/apk/res-auto"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_height="match_parent"
android:layout_width="match_parent">
<fragment
android:id="#+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".activities.MapsActivity" />
<ImageView
android:id="#+id/ic_location"
android:layout_width="18dp"
android:layout_height="18dp"
android:src="#drawable/ic_location"
android:layout_marginRight="8dp"
android:layout_marginBottom="18dp"
android:layout_alignParentRight="true"
android:layout_alignParentBottom="true"/>
</RelativeLayout>
2. Set my location enabled in maps api
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
// Enable My Location
mMap.setMyLocationEnabled(true);
/* and DON'T disable the default location button*/
}
3. Hide default button of my location.
//Create field for map button.
private View locationButton;
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
mMap.setMyLocationEnabled(true);
// get your maps fragment
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
// Extract My Location View from maps fragment
locationButton = mapFragment.getView().findViewById(0x2);
// Change the visibility of my location button
if(locationButton != null)
locationButton.setVisibility(View.GONE);
}
4. call click method of my location on your custom button click.
findViewById(R.id.ic_location).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if(mMap != null)
{
if(locationButton != null)
locationButton.callOnClick();
}
}
});

If you want to retain the smoothness of the default My Location button but not the look, call the following lines:
//Make sure you have explicit permission/catch SecurityException
mMap.setMyLocationEnabled(true);
mMap.getUiSettings().setMyLocationButtonEnabled(false);
Now you can start & stop location updates while keeping the default behavior

This might be useful to someone who is looking for changing the location icon directly, instead of using any trick or workaround:
locationButton = (mapView.findViewById<View>(Integer.parseInt("1")).parent as View)
.findViewById<ImageView>(Integer.parseInt("2"))
locationButton.setImageResource(R.drawable.ic_location_current)`
Here findViewById<ImageView> is the right thing to be done.

I get the default ImageView of my location using tag instead of idfor preventingExpected resource of type id` lint warning -
ImageView imageView = ((ImageView)mapFragment.getView().findViewWithTag("GoogleMapMyLocationButton"));
Then you can manipulate the imageView then.
imageView.setImageResource(R.drawable.icon_custom_location);

MapView not working properly inside fragment android

Hi in my application i m displaying one fragment. Inside that fragment I am displaying map. So my code looks like :
<RelativeLayout
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:id="#+id/innerrelativelay"
android:padding="10dp">
<TextView
android:id="#+id/storename"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="Store Name:"
android:textSize="15sp"
/>
<TextView
android:id="#+id/storeaddress"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_below="#+id/storename"
android:text="Store Address:"
android:textSize="15sp"
/>
</RelativeLayout>
<com.google.android.gms.maps.MapView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/mapView"
android:layout_below="#+id/innerrelativelay"
/>
</RelativeLayout>
and fragment looks like :
public class MyAccount extends SherlockFragment {
MapView map;
GoogleMap mMap;
TextView storeName,storeAddress;
SharedPreferences storeInfo,authenticationInfo;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.maplayout, container, false);
map = (MapView) v.findViewById(R.id.mapView);
map.onCreate(savedInstanceState);
mMap = map.getMap();
map.onCreate(savedInstanceState);
mMap.getUiSettings().setMyLocationButtonEnabled(false);
mMap.setMyLocationEnabled(true);
try {
MapsInitializer.initialize(this.getActivity());
} catch (GooglePlayServicesNotAvailableException e) {
e.printStackTrace();
}
// Updates the location and zoom of the MapView
CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngZoom(new LatLng(43.1, -87.9), 10);
mMap.animateCamera(cameraUpdate);
mMap.setMyLocationEnabled(true);
storeName = (TextView)v.findViewById(R.id.storename);
storeAddress = (TextView)v.findViewById(R.id.storeaddress);
storeInfo = getActivity().getSharedPreferences(CommonSharedPref.QCMERCHANT_STOREID, 0);
authenticationInfo = getActivity().getSharedPreferences(CommonSharedPref.QCMERCHANT_AUTHENTICATION_INFO, 0);
storeName.setText(storeName.getText().toString()+storeInfo.getString(CommonSharedPref.QCMERCHANT_STORENAME, ""));
storeAddress.setText(storeAddress.getText().toString()+storeInfo.getString(CommonSharedPref.QCMERCHANT_ADDRESS1, "")
+"\n"+storeInfo.getString(CommonSharedPref.QCMERCHANT_ADDRESS1, ""));
return v;
}
}
It shows me map properly but creating marker, showing current location or move camera at given location not working properly.
How to do this. Need help. Thank you.

UPDATE
Try changing the layout of fragment as
<fragment
android:id="#+id/mapView"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.MapFragment" />
Also it seems you havent initialised the markers yet. Thats why markers arent visible..
If you need pointers of how to do it.. There is a very good tutrial page...
http://www.vogella.com/articles/AndroidGoogleMaps/article.html
From here https://developers.google.com/maps/documentation/android/v1/hello-mapview, you can see that
Version 1 of the Google Maps Android API as been officially
deprecated as of December 3rd, 2012
So you shouldn't use MapView anymore. I suggest you use a MapFragment instead. See the excellent documentation for it here: https://developers.google.com/maps/documentation/android/reference/com/google/android/gms/maps/MapFragment