Develop Reference

Android google maps fragment issue

I am implementing Google maps in my android app. It works well but sometimes the app crashes and gives me this error: (Caused by: android.view.InflateException: Binary XML file line #2 in Error inflating class fragment).
I tried all solutions suggested but most of them are old and I still has the same issue.
Can you please help me with this issue while it still cause app crash.
this is the code used in Google Maps:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
binding = ActivityTruckLocationBinding.inflate(getLayoutInflater());
setContentView(binding.getRoot());
lat=lang="0";
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map2);
mapFragment.getMapAsync(this);
}
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
LatLng myplace = new LatLng(29.2722744, 47.8585885);
//mMap.addMarker(new MarkerOptions().position(myplace).title("Marker in myplace"));
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(myplace,11));
mMap.setOnMapLongClickListener(new GoogleMap.OnMapLongClickListener() {
#Override
public void onMapLongClick(#NonNull LatLng latLng) {
lat=String.valueOf(latLng.latitude);
lang=String.valueOf(latLng.longitude);
redirect();
}
});
}
public void redirect(){
Intent intent=new Intent(TruckLocation.this,Truck_Profile.class);
intent.putExtra("intenttype","location");
intent.putExtra("lat",lat);
intent.putExtra("lang",lang);
startActivity(intent);
finish();
}
Here is the XML code:
<?xml version="1.0" encoding="utf-8"?>
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:map="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/map2"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".TruckLocation" />

You have an issue in TruckLocationActivity.xml , you can share this xml with us to help you .

MapFragment is displaying but can't add markers, move camera, etc. with Google Map

I'm making an application using Android Studio and even though I've got the map and it's being displayed, I can't add markers or do anything else to it using the GoogleMap object obtained from OnMapReady.
Here's the code from my Main Activity:
public class MainActivity extends AppCompatActivity implements OnFragmentInteractionListener, OnMapReadyCallback {
MapFragment mapFragment;
private GoogleMap mMap;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
switchFragments(GlobalConsts.FRAGMENT.MAP);
}
public void switchFragments(GlobalConsts.FRAGMENT fragment){
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
switch (fragment) {
case MAP:
if (mapFragment == null) {
mapFragment = new MapFragment();
}
mapFragment.getMapAsync(this);
transaction.replace(R.id.fragmentContainer, mapFragment);
transaction.addToBackStack(null);
break;
}
transaction.commit();
}
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
LatLng sydney = new LatLng(-34, 151);
mMap.addMarker(new MarkerOptions()
.position(sydney)
.title("Sydney")
.snippet("Population: 4,627,300")
.icon(BitmapDescriptorFactory.fromResource(R.drawable.marker)));
CameraPosition cameraPosition = new CameraPosition.Builder().target(sydney).zoom(12).build();
mMap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));
}
}
Here's the xml layout for my Main Activity
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/activity_main"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
tools:context="jarett.familymap.MainActivity">
<FrameLayout
android:id="#+id/fragmentContainer"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
</LinearLayout>
My MapFragment class:
public class MapFragment extends SupportMapFragment {
public MapFragment() {}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
super.onCreateView(inflater, container, savedInstanceState);
return inflater.inflate(R.layout.fragment_map, container, false);
}
#Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
}
}
and the xml layout for my MapFragment in fragment_map.xml:
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/mapFragment"
android:orientation="vertical"
android:layout_width="match_parent" android:layout_height="match_parent"
class="com.google.android.gms.maps.SupportMapFragment"
tools:context="jarett.familymap.MapFragment">
</fragment>
Like I said, everything seems to be working fine as far as displaying the map fragment but for the life of me I can't figure out why the code for zooming and adding markers isn't doing anything. I appreciate the help.

I can't figure out why the code for zooming and adding markers isn't doing anything
Well, you have two maps. Your MapFragment extends SupportMapFragment, so that will give you one map. Then, your MapFragment inflates a layout that, in turn, creates a SupportMapFragment. This gives you two maps.
Either:
Delete MapFragment entirely, along with its associated layout file, and just have your activity create a SupportMapFragment, or
Delete your onCreateView() method from MapFragment, and move your map-management code into MapFragment, triggered by a getMapAsync() call in onViewCreated() (as I worry that you are calling it too soon in your existing code)

Android MapView in fragment freeze (not clickable or dragable) after initialisation

I want to show a MapView in a fragment. The map is shown as what I expected, but it seems it is only shown as a picture. I cannot drag to move camera or spread/pinch to zoom. I also tried to use SupportMapFragment in my fragment, but got the same result.
I have a NavigationView in my Activity. I do not think there's conflict on the touch event of NavigationView and MapView.
Anyone met this before?
fragment
public class CustomizedMapFragment extends Fragment implements OnMapReadyCallback{
MapView mapView;
GoogleMap googleMap;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_map, container, false);
mapView = (MapView) rootView.findViewById(R.id.mapView);
mapView.onCreate(savedInstanceState);
mapView.getMapAsync(this);
return rootView;
}
#Override
public void onMapReady(GoogleMap googleMap) {
this.googleMap = googleMap;
this.googleMap.getUiSettings().setZoomControlsEnabled(true);
this.googleMap.getUiSettings().setZoomGesturesEnabled(true);
}
#Override
public void onResume() {
super.onResume();
mapView.onResume();
}
#Override
public void onPause() {
super.onPause();
mapView.onPause();
}
#Override
public void onDestroy() {
super.onDestroy();
mapView.onDestroy();
}
#Override
public void onLowMemory() {
super.onLowMemory();
mapView.onLowMemory();
}
}
layout
<?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" >
<com.google.android.gms.maps.MapView
android:layout_margin="16dp"
android:id="#+id/mapView"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</RelativeLayout>

Try to use this UiSettings.setScrollGesturesEnabled(boolean), by using this you can scroll (pan) around the map by dragging the map with their finger.
Another way is configure these options when the map is created via XML attributes.
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:map="http://schemas.android.com/apk/res-auto"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:id="#+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
map:cameraBearing="112.5"
map:cameraTargetLat="-33.796923"
map:cameraTargetLng="150.922433"
map:cameraTilt="30"
map:cameraZoom="13"
map:mapType="normal"
map:uiCompass="false"
map:uiRotateGestures="true"
map:uiScrollGestures="false"
map:uiTiltGestures="true"
map:uiZoomControls="false"
map:uiZoomGestures="true"/>
But in order to use these custom attributes within your XML layout file, you must first add the following namespace declaration.
xmlns:map="http://schemas.android.com/apk/res-auto"
For more information, check this documentation.

Google Maps returns null

I have a Google Maps Activity. suddently it is shutting down because getMap() (java null pointer exeption) doesn't seem to work. I reinstalled some older apks that worked fine and but yet these are shutting down to. So it has to be something on the device or so, what can be the reason?
private GoogleMap googleMap;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
try {
if(googleMap == null) {
googleMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
}
Here is the xml file
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<fragment
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/map"
android:name="com.google.android.gms.maps.MapFragment"/>
Logcat:
java.lang.RuntimeException: Unable to start activity ComponentInfo{de.mareike.cityexplorer/de.mareike.cityexplorer.MainActivity}: java.lang.NullPointerException
Caused by: java.lang.NullPointerException
at com.google.l.a.ce.a(Unknown Source)
at com.google.maps.api.android.lib6.d.eg.<init>(Unknown Source)
at com.google.maps.api.android.lib6.d.ef.a(Unknown Source)
at com.google.maps.api.android.lib6.d.aq.<init>(Unknown Source)
at com.google.maps.api.android.lib6.d.ft.a(Unknown Source)
at com.google.android.gms.maps.internal.l.onTransact(SourceFile:167)
at android.os.Binder.transact(Binder.java:380)
at com.google.android.gms.maps.internal.IGoogleMapDelegate$zza$zza.addMarker(Unknown Source)
at com.google.android.gms.maps.GoogleMap.addMarker(Unknown Source)
at de.mareike.cityexplorer.MainActivity.onCreate(MainActivity.java:88)

According to here, the getMap() method is deprecated and you need to use getMapAsync(OnMapReadyCallback) instead.
Sample code:
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
}
#Override
public void onMapReady(GoogleMap map) {
// Add a marker in Sydney, Australia, and move the camera.
LatLng sydney = new LatLng(-34, 151);
map.addMarker(new MarkerOptions().position(sydney).title("Marker in Sydney"));
map.moveCamera(CameraUpdateFactory.newLatLngZoom(sydney, 10));
}
}
and the activity_main.xml:
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/map"
tools:context=".MapsActivity"
android:name="com.google.android.gms.maps.SupportMapFragment"/>
For more details, please refer official doc here.

Check your layout activity_main should contains fragment having id map
<fragment
android:id="#+id/map"
android:name="com.google.android.gms.maps.MapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent" />

Mapview displays blank but fragment is ok

I am trying to use Google Map V2. When I use map fragment .. Everything works.
However if I use mapview instead, then it displays blank activity.
What could be wrong?
Xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/mapParent"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<com.google.android.gms.maps.MapView
android:id="#+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
Main activity:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}

You need to initialize the map yourself:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Gets the MapView from the XML layout and creates it
MapView mapView = (MapView) findViewById(R.id.map);
mapView.onCreate(savedInstanceState);
// Gets to GoogleMap from the MapView and does initialization stuff
GoogleMap map = mapView.getMap();
// Needs to call MapsInitializer before doing any CameraUpdateFactory calls
MapsInitializer.initialize(this);
mapView.onResume();
}

about MainActivity - If you only wanted to display simple map UI you can do following:
private GoogleMap map; // or private static GoogleMap map;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
[...]
try {
loadingObjectOfMainMap();
} catch (Exception e) {
e.printStackTrace(); // prints error to console/log
}
[...]
}
and then method:
protected void loadingObjectOfMainMap() {
if( map == null) {
map = ((MapFragment) getFragmentManager().findFragmentById(R.id.map))
.getMap();
map.setMyLocationEnabled(true); // will display blue dot at your location
}
}
About XML:
I highly recommed you to use fragments for google maps objects, like this:
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:mapOptions="http://schemas.android.com/apk/res-auto"
android:id="#+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:name="com.google.android.gms.maps.MapFragment"
mapOptions:mapType="hybrid"/>
I recommend you simple tut, you will find all answers there
http://www.androidhive.info/2013/08/android-working-with-google-maps-v2/
(no, it's not my site - it's place where I started working with google maps api)