Duplicate ID tag null or parent id with another fragment for com google android gms maps MapFragment

Question

I have an application with three tabs   Each tab has its own layout  xml file  The main xml has its own map fragment  It s the one that shows up when the application first launches   Everything works fine except for when I change between tabs  If I try to switch back to the map fragment tab  I get this error  Switching to and between other tabs works just fine   What could be wrong here   This is my main class and my main xml  as well as a relevant class that I use   you will also find the error log at the bottom    main class  package com nfc demo   import android app ActionBar  import android app ActionBar Tab  import android app Activity  import android app Fragment  import android app FragmentTransaction  import android os Bundle  import android widget Toast   public class NFCDemoActivity extends Activity        public void onCreate Bundle savedInstanceState            super onCreate savedInstanceState            ActionBar bar   getActionBar            bar setNavigationMode ActionBar NAVIGATION MODE TABS           bar setDisplayOptions 0  ActionBar DISPLAY SHOW TITLE            bar addTab bar                  newTab                    setText  Map                    setTabListener                          new TabListener lt MapFragment gt  this   map                                   MapFragment class             bar addTab bar                  newTab                    setText  Settings                    setTabListener                          new TabListener lt SettingsFragment gt  this   settings                                   SettingsFragment class             bar addTab bar                  newTab                    setText  About                    setTabListener                          new TabListener lt AboutFragment gt  this   about                                   AboutFragment class              if  savedInstanceState    null                bar setSelectedNavigationItem savedInstanceState getInt  tab   0                         setContentView R layout main                Override     protected void onSaveInstanceState Bundle outState            super onSaveInstanceState outState           outState putInt  tab   getActionBar   getSelectedNavigationIndex                public static class TabListener lt T extends Fragment gt  implements             ActionBar TabListener           private final Activity mActivity          private final String mTag          private final Class lt T gt  mClass          private final Bundle mArgs          private Fragment mFragment           public TabListener Activity activity  String tag  Class lt T gt  clz                this activity  tag  clz  null                      public TabListener Activity activity  String tag  Class lt T gt  clz                  Bundle args                mActivity   activity              mTag   tag              mClass   clz              mArgs   args                  Check to see if we already have a fragment for this tab                 probably from a previously saved state  If so  deactivate                it  because our initial state is that a tab isn t shown              mFragment   mActivity getFragmentManager   findFragmentByTag mTag               if  mFragment    null  amp  amp   mFragment isDetached                      FragmentTransaction ft   mActivity getFragmentManager                            beginTransaction                    ft detach mFragment                   ft commit                                     public void onTabSelected Tab tab  FragmentTransaction ft                if  mFragment    null                    mFragment   Fragment instantiate mActivity  mClass getName                            mArgs                   ft add android R id content  mFragment  mTag                 else                   ft attach mFragment                                    public void onTabUnselected Tab tab  FragmentTransaction ft                if  mFragment    null                    ft detach mFragment                                    public void onTabReselected Tab tab  FragmentTransaction ft                Toast makeText mActivity   Reselected    Toast LENGTH SHORT                            show                         main xml   lt  xml version  1 0  encoding  utf-8   gt   lt LinearLayout xmlns android  http   schemas android com apk res android      android layout width  match parent      android layout height  match parent      android orientation  vertical   gt        lt fragment         xmlns android  http   schemas android com apk res android          android id    id mapFragment          android name  com google android gms maps MapFragment          android layout width  match parent          android layout height  match parent    gt   lt  LinearLayout gt    relevant class   MapFragment java    package com nfc demo   import android app Fragment  import android os Bundle  import android view LayoutInflater  import android view View  import android view ViewGroup   public class MapFragment extends Fragment         Override     public View onCreateView LayoutInflater inflater  ViewGroup container              Bundle savedInstanceState            super onCreateView inflater  container  savedInstanceState           return inflater inflate R layout main  container  false              public void onDestroy             super onDestroy              error   android view InflateException  Binary XML file line  7        Error inflating class fragment    at android view LayoutInflater createViewFromTag LayoutInflater java 704     at android view LayoutInflater rInflate LayoutInflater java 746     at android view LayoutInflater inflate LayoutInflater java 489     at android view LayoutInflater inflate LayoutInflater java 396     at com nfc demo MapFragment onCreateView MapFragment java 15     at android app Fragment performCreateView Fragment java 1695     at android app FragmentManagerImpl moveToState FragmentManager java 885     at android app FragmentManagerImpl attachFragment FragmentManager java 1255     at android app BackStackRecord run BackStackRecord java 672     at android app FragmentManagerImpl execPendingActions FragmentManager java 1435     at android app FragmentManagerImpl 1 run FragmentManager java 441     at android os Handler handleCallback Handler java 725     at android os Handler dispatchMessage Handler java 92     at android os Looper loop Looper java 137     at android app ActivityThread main ActivityThread java 5039     at java lang reflect Method invokeNative Native Method     at java lang reflect Method invoke Method java 511     at com android internal os ZygoteInit MethodAndArgsCaller run ZygoteInit java 793     at com android internal os ZygoteInit main ZygoteInit java 560     at dalvik system NativeStart main Native Method   Caused by  java lang IllegalArgumentException        Binary XML file line  7  Duplicate id 0x7f040005  tag null  or       parent id 0xffffffff with another fragment for       com google android gms maps MapFragment    at android app Activity onCreateView Activity java 4722     at android view LayoutInflater createViewFromTag LayoutInflater java 680         19 more

User · Answer

Try setting an id  android id    id maps dialog   for your mapView parent layout  Works for me

User · Answer

This is my answer   1  Create a layout xml like following    lt FrameLayout xmlns android  http   schemas android com apk res android  xmlns tools  http   schemas android com tools  android id    id map container  android layout width  match parent  android layout height  match parent  gt   lt  FrameLayout gt    2  in the Fragment class  add a google map programmatically   import com google android gms maps GoogleMap  import com google android gms maps SupportMapFragment  import android app Activity  import android os Bundle  import android support v4 app Fragment  import android support v4 app FragmentTransaction  import android util Log  import android view LayoutInflater  import android view View  import android view ViewGroup          A simple   link android support v4 app Fragment  subclass  Activities that    contain this fragment must implement the      link MapFragment OnFragmentInteractionListener  interface to handle    interaction events  Use the   link MapFragment newInstance  factory method to    create an instance of this fragment          public class MapFragment extends Fragment          TODO  Rename parameter arguments  choose names that match     private GoogleMap mMap        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         View view   inflater inflate R layout fragment map  container  false           SupportMapFragment mMapFragment   SupportMapFragment newInstance            mMap   mMapFragment getMap            FragmentTransaction transaction   getChildFragmentManager   beginTransaction            transaction add R id map container  mMapFragment  commit            return view              Override     public void onAttach Activity activity            super onAttach activity           Log d  Attach    on attach                Override     public void onDetach             super onDetach

User · Answer

As mentioned by  Justin Breitfeller   Vidar Wahlberg solution is a hack which might not work in future version of Android   Vidar Wahlberg perfer a hack because other solution might  cause the map to be recreated and redrawn  which isn t always desirable   Map redraw could be prevented by maintaining the old map fragment  rather than creating a new instance every time   Matt solution doesn t work for me  IllegalStateException  As quoted by  Justin Breitfeller   You cannot inflate a layout into a fragment when that layout includes a   Nested fragments are only supported when added to a fragment dynamically     My solution    Override public View onCreateView LayoutInflater inflater  ViewGroup container                               Bundle savedInstanceState        View view   inflater inflate R layout fragment map list  container  false           init       mapFragment    SupportMapFragment getChildFragmentManager   findFragmentById R id map          don t recreate fragment everytime ensure last map location state are maintain     if  mapFragment    null            mapFragment   SupportMapFragment newInstance            mapFragment getMapAsync this             FragmentTransaction transaction   getChildFragmentManager   beginTransaction           R id map is a layout     transaction replace R id map  mapFragment  commit         return view

User · Answer

Anyone coming here now that s getting this type of error when opening a Dialog or other Fragment with the Google Places AutocompleteSupportFragment  try this one-liner  I don t know how safe this is but it works for me    autocompleteFragment getFragmentManager   beginTransaction   remove autocompleteFragment  commit     before you dismiss destroy your fragment

User · Answer

In this solution you do not need to take static variable   Button nextBtn   private SupportMapFragment mMapFragment    Nullable  Override public View onCreateView LayoutInflater inflater   Nullable ViewGroup container   Nullable Bundle savedInstanceState        super onCreateView inflater  container  savedInstanceState        if  mRootView    null            ViewGroup parent    ViewGroup  mRootView getParent            Utility log 0  removeView   mRootView not NULL            if  parent    null                Utility log 0   removeView    view removeViewed                parent removeAllViews                        else           try               mRootView   inflater inflate R layout dummy fragment layout one  container  false               catch  InflateException e           map is already there  just return view as it is                 e printStackTrace                         return  mRootView      Override public void onViewCreated View view   Nullable Bundle savedInstanceState        super onViewCreated view  savedInstanceState       FragmentManager fm   getChildFragmentManager        SupportMapFragment mapFragment    SupportMapFragment  fm findFragmentById R id mapView       if  mapFragment    null            mapFragment   new SupportMapFragment            FragmentTransaction ft   fm beginTransaction            ft add R id mapView  mapFragment   mapFragment            ft commit            fm executePendingTransactions                mapFragment getMapAsync this       nextBtn    Button  view findViewById R id nextBtn       nextBtn setOnClickListener new View OnClickListener              Override         public void onClick View v                Utility replaceSupportFragment getActivity   R id dummyFragment dummyFragment 2 class getSimpleName   null new dummyFragment 2

User · Answer

I had this in viewPager and the crash was because any fragment had to have its own tag  duplicate tags or ids for same fragment are not allowed

User · Answer

I had the same issue and was able to resolve it by manually removing the MapFragment in the onDestroy   method of the Fragment class   Here is code that works and references the MapFragment by ID in the XML    Override public void onDestroyView         super onDestroyView        MapFragment f    MapFragment  getFragmentManager                                             findFragmentById R id map       if  f    null           getFragmentManager   beginTransaction   remove f  commit        If you don t remove the MapFragment manually  it will hang around so that it doesn t cost a lot of resources to recreate show the map view again  It seems that keeping the underlying MapView is great for switching back and forth between tabs  but when used in fragments this behavior causes a duplicate MapView to be created upon each new MapFragment with the same ID   The solution is to manually remove the MapFragment and thus recreate the underlying map each time the fragment is inflated   I also noted this in another answer  1

User · Answer

The answer Matt suggests works  but it cause the map to be recreated and redrawn  which isn t always desirable  After lots of trial and error  I found a solution that works for me   private static View view    Override public View onCreateView LayoutInflater inflater  ViewGroup container  Bundle savedInstanceState        if  view    null            ViewGroup parent    ViewGroup  view getParent            if  parent    null              parent removeView view             try           view   inflater inflate R layout map  container  false         catch  InflateException e               map is already there  just return view as it is              return view      For good measure  here s  map xml   R layout map  with R id mapFragment  android id    id mapFragment      lt  xml version  1 0  encoding  utf-8   gt   lt LinearLayout xmlns android  http   schemas android com apk res android      android id    id mapLayout      android layout width  match parent      android layout height  match parent   gt        lt fragment xmlns android  http   schemas android com apk res android          android id    id mapFragment          android layout width  match parent          android layout height  match parent          class  com google android gms maps SupportMapFragment    gt   lt  LinearLayout gt    I hope this helps  but I can t guarantee that it doesn t have any adverse effects   Edit  There were some adverse effects  such as when exiting the application and starting it again  Since the application isn t necessarily completely shut down  but just put to sleep in the background   the previous code i submitted would fail upon restarting the application  I ve updated the code to something that works for me  both going in  amp  out of the map and exiting and restarting the application  I m not too happy with the try-catch bit  but it seem to work well enough  When looking at the stack trace it occurred to me that I could just check if the map fragment is in the FragmentManager  no need for the try-catch block  code updated   More edits  Turns out you need that try-catch after all  Just checking for the map fragment turned out not to work so well after all  Blergh

User · Answer

Have you been trying to reference your custom MapFragment class in the layout file    lt  xml version  1 0  encoding  utf-8   gt   lt LinearLayout xmlns android  http   schemas android com apk res android      android layout width  match parent      android layout height  match parent      android orientation  vertical   gt        lt fragment         xmlns android  http   schemas android com apk res android          android id    id mapFragment          android name  com nfc demo MapFragment          android layout width  match parent          android layout height  match parent    gt   lt  LinearLayout gt

User · Answer

Things to Note here is your app will crash badly in either of two cases -     1  In order to reuse fragment with Maps again MapView Fragment must be removed when   your fragment showing Maps got replaced with other fragment in onDestroyView callback       else when you try to inflate same fragment twice Duplicate ID  tag null  or parent id with another fragment for com google android gms maps MapFragment error will happen        2  Secondly you must not mix app Fragment operations with   android support v4 app Fragment API operations eg do not use   android app FragmentTransaction to remove v4 app Fragment type    MapView  Fragment  Mixing this will again result into crash from fragment side     Here is sample code snippet for correct usage of MapView  import android content Context  import android location Location  import android location LocationListener  import android location LocationManager  import android os Bundle  import android support v4 app Fragment  import android util Log  import android view LayoutInflater  import android view View  import android view ViewGroup  import android widget Toast   import com google android gms maps CameraUpdateFactory  import com google android gms maps GoogleMap  import com google android gms maps GoogleMap OnMapClickListener  import com google android gms maps MapFragment  import com google android gms maps model BitmapDescriptorFactory  import com google android gms maps model CameraPosition  import com google android gms maps model LatLng  import com google android gms maps model MarkerOptions  import com serveroverload yago R           author 663918        public class HomeFragment extends Fragment implements LocationListener          Class to do operations on the Map     GoogleMap googleMap      private LocationManager locationManager       public static Fragment newInstance             return new HomeFragment                Override     public View onCreateView LayoutInflater inflater  ViewGroup container              Bundle savedInstanceState            View v   inflater inflate R layout home fragment  container  false           Bundle bdl   getArguments                setuping locatiomanager to perfrom location related operations         locationManager    LocationManager  getActivity   getSystemService                  Context LOCATION SERVICE               Requesting locationmanager for location updates         locationManager requestLocationUpdates                  LocationManager NETWORK PROVIDER  1  1  this               To get map from MapFragment from layout         googleMap     MapFragment  getActivity   getFragmentManager                    findFragmentById R id map   getMap                To change the map type to Satellite            googleMap setMapType GoogleMap MAP TYPE SATELLITE               To show our current location in the map with dot            googleMap setMyLocationEnabled true               To listen action whenever we click on the map         googleMap setOnMapClickListener new OnMapClickListener                   Override             public void onMapClick LatLng latLng                                          LatLng Class will give us selected position lattigude and                    longitude values                                     Toast makeText getActivity    latLng toString                            Toast LENGTH LONG  show                                       changeMapMode 2               googleMap setSatellite true           googleMap setTrafficEnabled true           googleMap setBuildingsEnabled true           googleMap setMyLocationEnabled true            return v             private void doZoom             if  googleMap    null                googleMap animateCamera CameraUpdateFactory newLatLngZoom                      new LatLng 18 520430  73 856744   17                         private void changeMapMode int mapMode             if  googleMap    null                switch  mapMode                case 0                  googleMap setMapType GoogleMap MAP TYPE NONE                   break               case 1                  googleMap setMapType GoogleMap MAP TYPE NORMAL                   break               case 2                  googleMap setMapType GoogleMap MAP TYPE SATELLITE                   break               case 3                  googleMap setMapType GoogleMap MAP TYPE TERRAIN                   break               case 4                  googleMap setMapType GoogleMap MAP TYPE HYBRID                   break               default                  break                                     private void createMarker double latitude  double longitude               double latitude   17 385044             double longitude   78 486671              lets place some 10 random markers         for  int i   0  i  lt  10  i                     random latitude and logitude             double   randomLocation   createRandLocation latitude  longitude                   Adding a marker             MarkerOptions marker   new MarkerOptions   position                      new LatLng randomLocation 0   randomLocation 1    title                       Hello Maps     i                Log e  Random     gt      randomLocation 0           randomLocation 1                    changing marker color             if  i    0                  marker icon BitmapDescriptorFactory                          defaultMarker BitmapDescriptorFactory HUE AZURE                if  i    1                  marker icon BitmapDescriptorFactory                          defaultMarker BitmapDescriptorFactory HUE BLUE                if  i    2                  marker icon BitmapDescriptorFactory                          defaultMarker BitmapDescriptorFactory HUE CYAN                if  i    3                  marker icon BitmapDescriptorFactory                          defaultMarker BitmapDescriptorFactory HUE GREEN                if  i    4                  marker icon BitmapDescriptorFactory                          defaultMarker BitmapDescriptorFactory HUE MAGENTA                if  i    5                  marker icon BitmapDescriptorFactory                          defaultMarker BitmapDescriptorFactory HUE ORANGE                if  i    6                  marker icon BitmapDescriptorFactory                          defaultMarker BitmapDescriptorFactory HUE RED                if  i    7                  marker icon BitmapDescriptorFactory                          defaultMarker BitmapDescriptorFactory HUE ROSE                if  i    8                  marker icon BitmapDescriptorFactory                          defaultMarker BitmapDescriptorFactory HUE VIOLET                if  i    9                  marker icon BitmapDescriptorFactory                          defaultMarker BitmapDescriptorFactory HUE YELLOW                 googleMap addMarker marker                   Move the camera to last position with a zoom level             if  i    9                    CameraPosition cameraPosition   new CameraPosition Builder                            target new LatLng randomLocation 0   randomLocation 1                             zoom 15  build                     googleMap animateCamera CameraUpdateFactory                          newCameraPosition cameraPosition                                                  creating random postion around a location for testing purpose only             private double   createRandLocation double latitude  double longitude             return new double     latitude     Math random   - 0 5    500                   longitude     Math random   - 0 5    500                   150     Math random   - 0 5    10                 Override     public void onLocationChanged Location location             if  null    googleMap                   To get lattitude value from location object             double latti   location getLatitude                   To get longitude value from location object             double longi   location getLongitude                    To hold lattitude and longitude values             LatLng position   new LatLng latti  longi                createMarker latti  longi                   Creating object to pass our current location to the map             MarkerOptions markerOptions   new MarkerOptions                   To store current location in the markeroptions object             markerOptions position position                   Zooming to our current location with zoom level 17 0f             googleMap animateCamera CameraUpdateFactory newLatLngZoom position                      17f                    adding markeroptions class object to the map to show our current                location in the map with help of default marker             googleMap addMarker markerOptions                          Override     public void onStatusChanged String provider  int status  Bundle extras               TODO Auto-generated method stub              Override     public void onProviderEnabled String provider               TODO Auto-generated method stub              Override     public void onProviderDisabled String provider               TODO Auto-generated method stub              Override     public void onDestroyView                TODO Auto-generated method stub         super onDestroyView             locationManager removeUpdates this            android app Fragment fragment   getActivity   getFragmentManager                    findFragmentById R id map           if  null    fragment                android app FragmentTransaction ft   getActivity                        getFragmentManager   beginTransaction                ft remove fragment               ft commit                         XML    lt fragment         android id    id map          android name  com google android gms maps MapFragment          android layout width  match parent          android layout height  match parent           gt    Result looks like this  -  Hope it will help Somebody

User · Answer

I am a bit late to the party but Non of these answer helped me in my case  I was using Google map as SupportMapFragment and PlaceAutocompleteFragment both in my fragment  As all the answers pointed to the fact that the problem is with SupportMapFragment being the map to be recreated and redrawn But after digging found out my problem was actually with PlaceAutocompleteFragment  So here is the working solution for those who are facing this problem because of SupportMapFragment and SupportMapFragment     Global SupportMapFragment mapFragment   mapFragment    SupportMapFragment  getChildFragmentManager   findFragmentById R id mapFragment       FragmentManager fm   getChildFragmentManager         if  mapFragment    null            mapFragment   SupportMapFragment newInstance            fm beginTransaction   replace R id mapFragment  mapFragment  commit            fm executePendingTransactions               mapFragment getMapAsync this          Global PlaceAutocompleteFragment autocompleteFragment        if  autocompleteFragment    null            autocompleteFragment    PlaceAutocompleteFragment  getActivity   getFragmentManager   findFragmentById R id place autoCompleteFragment            And in onDestroyView clear the SupportMapFragment and SupportMapFragment   Override public void onDestroyView         super onDestroyView          if  getActivity      null            Log e  res   place dlted            android app FragmentManager fragmentManager   getActivity   getFragmentManager            android app FragmentTransaction fragmentTransaction   fragmentManager beginTransaction            fragmentTransaction remove autocompleteFragment           fragmentTransaction commit              Use commitAllowingStateLoss   if getting exception           autocompleteFragment   null

User · Answer

I would recommend replace   rather than attach   detach   in your tab handling   Or  switch to ViewPager  Here is a sample project showing a ViewPager  with tabs  hosting 10 maps

User · Answer

You are returning or inflating layout twice  just check to see if you only inflate once

User · Answer

I think there was some bugs in previous App-Compat lib for child Fragment  I tried  Vidar Wahlberg and  Matt s ans they did not work for me  After updating the appcompat library my code run perfectly without any extra effort

User · Answer

For those who are still running into this issue  the best way to make sure you don t get this error with a Map in a Tab is to make the Fragment extend SupportMapFragment instead of nesting a SupportMapFragment inside the Fragment used for the Tab   I just got this working using a ViewPager with a FragmentPagerAdapter  with the SupportMapFragment in the third Tab   Here is the general structure  note there is no need to override the onCreateView   method  and there is no need to inflate any layout xml   public class MapTabFragment extends SupportMapFragment                                      implements OnMapReadyCallback        private GoogleMap mMap      private Marker marker        public MapTabFragment                 Override     public void onResume             super onResume             setUpMapIfNeeded               private void setUpMapIfNeeded              if  mMap    null                 getMapAsync this                         Override     public void onMapReady GoogleMap googleMap             mMap   googleMap          setUpMap               private void setUpMap              mMap setMyLocationEnabled true           mMap setMapType GoogleMap MAP TYPE HYBRID           mMap getUiSettings   setMapToolbarEnabled false             mMap setOnMapClickListener new GoogleMap OnMapClickListener                   Override             public void onMapClick LatLng point                       remove previously placed Marker                 if  marker    null                        marker remove                                         place marker where user just clicked                 marker   mMap addMarker new MarkerOptions   position point  title  Marker                            icon BitmapDescriptorFactory defaultMarker BitmapDescriptorFactory HUE MAGENTA                                             Result     Here is the full class code that I used to test with  which includes the placeholder Fragment used for the first two Tabs  and the Map Fragment used for the third Tab   public class MainActivity extends AppCompatActivity implements ActionBar TabListener        SectionsPagerAdapter mSectionsPagerAdapter       ViewPager mViewPager        Override     protected void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout activity main            mSectionsPagerAdapter   new SectionsPagerAdapter getSupportFragmentManager                 Set up the ViewPager with the sections adapter          mViewPager    ViewPager  findViewById R id pager           mViewPager setAdapter mSectionsPagerAdapter            final ActionBar actionBar   getSupportActionBar            actionBar setNavigationMode ActionBar NAVIGATION MODE TABS            mViewPager setOnPageChangeListener new ViewPager SimpleOnPageChangeListener                  Override             public void onPageSelected int position                    actionBar setSelectedNavigationItem position                                      for  int i   0  i  lt  mSectionsPagerAdapter getCount    i                  actionBar addTab actionBar newTab   setText mSectionsPagerAdapter getPageTitle i   setTabListener this                            Override     public boolean onCreateOptionsMenu Menu menu               Inflate the menu  this adds items to the action bar if it is present          getMenuInflater   inflate R menu menu main  menu           return true              Override     public boolean onOptionsItemSelected MenuItem item             int id   item getItemId             if  id    R id action settings                return true                     return super onOptionsItemSelected item               Override     public void onTabSelected ActionBar Tab tab  FragmentTransaction ft            mViewPager setCurrentItem tab getPosition                 Override     public void onTabUnselected ActionBar Tab tab  FragmentTransaction ft                 Override     public void onTabReselected ActionBar Tab tab  FragmentTransaction ft                 public class SectionsPagerAdapter extends FragmentPagerAdapter            public SectionsPagerAdapter FragmentManager fm                super fm                       Override         public Fragment getItem int position                 switch  position                    case 0                      return PlaceholderFragment newInstance position   1                   case 1                      return PlaceholderFragment newInstance position   1                   case 2                      return MapTabFragment newInstance position   1                              return null                      Override         public int getCount                    Show 3 total pages              return 3                      Override         public CharSequence getPageTitle int position                Locale l   Locale getDefault                 switch  position                    case 0                      return getString R string title section1  toUpperCase l                   case 1                      return getString R string title section2  toUpperCase l                   case 2                      return getString R string title section3  toUpperCase l                             return null                        public static class PlaceholderFragment extends Fragment            private static final String ARG SECTION NUMBER    section number            TextView text           public static PlaceholderFragment newInstance int sectionNumber                PlaceholderFragment fragment   new PlaceholderFragment                Bundle args   new Bundle                args putInt ARG SECTION NUMBER  sectionNumber               fragment setArguments args               return fragment                     public PlaceholderFragment                         Override         public View onCreateView LayoutInflater inflater  ViewGroup container                                   Bundle savedInstanceState                View rootView   inflater inflate R layout fragment main  container  false                text    TextView  rootView findViewById R id section label               text setText  placeholder                 return rootView                       public static class MapTabFragment extends SupportMapFragment implements             OnMapReadyCallback            private static final String ARG SECTION NUMBER    section number            private GoogleMap mMap          private Marker marker            public static MapTabFragment newInstance int sectionNumber                MapTabFragment fragment   new MapTabFragment                Bundle args   new Bundle                args putInt ARG SECTION NUMBER  sectionNumber               fragment setArguments args               return fragment                     public MapTabFragment                         Override         public void onResume                 super onResume                 Log d  MyMap    onResume                setUpMapIfNeeded                       private void setUpMapIfNeeded                  if  mMap    null                     Log d  MyMap    setUpMapIfNeeded                     getMapAsync this                                     Override         public void onMapReady GoogleMap googleMap                Log d  MyMap    onMapReady                mMap   googleMap              setUpMap                       private void setUpMap                  mMap setMyLocationEnabled true               mMap setMapType GoogleMap MAP TYPE HYBRID               mMap getUiSettings   setMapToolbarEnabled false                 mMap setOnMapClickListener new GoogleMap OnMapClickListener                       Override                 public void onMapClick LatLng point                         Log d  MyMap    MapClick                           remove previously placed Marker                     if  marker    null                            marker remove                                                 place marker where user just clicked                     marker   mMap addMarker new MarkerOptions   position point  title  Marker                                icon BitmapDescriptorFactory defaultMarker BitmapDescriptorFactory HUE MAGENTA                          Log d  MyMap    MapClick After Add Marker

User · Answer

I respect all the answers but i found this one liner solution  If n Is the Number of tabs then    mViewPager setOffscreenPageLimit n     Example  In case mentioned     mViewPager setOffscreenPageLimit 2     View pager implements a queue so  you don t have to let it remove that fragment  onCreateView is called only once

User · Answer

Declare SupportMapFragment object globally      private SupportMapFragment mapFragment    In onCreateView   method put below code  mapFragment    SupportMapFragment  getChildFragmentManager                findFragmentById R id map    mapFragment getMapAsync this     In onDestroyView   put below code   Override public void onDestroyView        super onDestroyView         if  mapFragment    null          getFragmentManager   beginTransaction   remove mapFragment  commit        In your xml file put below code    lt fragment     android id    id map      android name  com abc Driver fragment FragmentHome      class  com google android gms maps SupportMapFragment      android layout width  match parent      android layout height  match parent        gt    Above code solved my problem and it s working fine

User · Answer

Another solution   if  view    null        view   inflater inflate R layout nearbyplaces  container  false       That s it  if not null you don t need to reinitialize it removing from parent is unnecessary step

User · Answer

I have lost hours today to find the reason  fortunately this issue is not because of MapFragment implementation  fnfortunately  this does not work because nested fragments are only supported through support library from rev 11   My implementation has an activity with actionbar  in tabbed mode  with two tabs  no viewpager   one having the map and the other having a list of entries  Of course I ve been quite naive to use MapFragment inside my tab-fragments  et voila the app crashed everytime I switched back to map-tab     The same issue I also would have in case my tab-fragment would inflate any layout containing any other fragment     One option is to use the MapView  instead of MapFragment   with some overhead though   see MapView Docs as drop-in replacement in the layout xml  another option is to use support-library up from rev  11 but then take programmatic approach since nested fragments are neither supported via layout  Or just working around programmatically by explicitely destroying the fragment  like in the answer from Matt   Vidar   btw  same effect is achieved using the MapView  option 1    But actually  I did not want to loose the map everytime I tab away  that is  I wanted to keep it in memory and cleanup only upon activity close  so I decided to simply hide show the map while tabbing  see FragmentTransaction   hide

User · Answer

The problem is that what you are trying to do shouldn t be done  You shouldn t be inflating fragments inside other fragments  From Android s documentation      Note  You cannot inflate a layout into a fragment when that layout   includes a  lt fragment gt   Nested fragments are only supported when added   to a fragment dynamically    While you may be able to accomplish the task with the hacks presented here  I highly suggest you don t do it  Its impossible to be sure that these hacks will handle what each new Android OS does when you try to inflate a layout for a fragment containing another fragment    The only Android-supported way to add a fragment to another fragment is via a transaction from the child fragment manager   Simply change your XML layout into an empty container  add an ID if needed      lt  xml version  1 0  encoding  utf-8   gt   lt LinearLayout xmlns android  http   schemas android com apk res android      android id    id mapFragmentContainer      android layout width  match parent      android layout height  match parent      android orientation  vertical   gt   lt  LinearLayout gt    Then in the Fragment onViewCreated View view   Nullable Bundle savedInstanceState  method    Override public void onViewCreated View view   Nullable Bundle savedInstanceState        super onViewCreated view  savedInstanceState       FragmentManager fm   getChildFragmentManager        SupportMapFragment mapFragment    SupportMapFragment  fm findFragmentByTag  mapFragment        if  mapFragment    null            mapFragment   new SupportMapFragment            FragmentTransaction ft   fm beginTransaction            ft add R id mapFragmentContainer  mapFragment   mapFragment            ft commit            fm executePendingTransactions              mapFragment getMapAsync callback

User · Answer

Nested fragments are not currently supported  Try Support Package  revision 11

User · Answer

lt  xml version  1 0  encoding  utf-8   gt      lt RelativeLayout xmlns android  http   schemas android com apk res android    android layout width  match parent     android layout height  match parent   gt     lt com google android gms maps MapView     android id    id mapview      android layout width  100dip      android layout height  100dip      android layout alignParentTop  true      android layout alignRight    id textView1      android layout marginRight  15dp   gt   lt  com google android gms maps MapView gt    Why don t you insert a map using the MapView object instead of MapFragment   I am not sure if there is any limitation in MapView though i found it helpful

User · Answer

If you will use only Vidar Wahlberg answer  you get error when you open other activity  for example  and back to map  Or in my case open other activity and then from new activity open map again  without use back button   But when you combine Vidar Wahlberg solution and Matt solution you will have not exceptions   layout   lt com example ui layout MapWrapperLayout xmlns android  http   schemas android com apk res android  android layout width  fill parent  android layout height  fill parent  android id    id map relative layout  gt        lt RelativeLayout         android layout width  fill parent          android layout height  fill parent          android id    id root  gt            lt fragment xmlns android  http   schemas android com apk res android              android id    id map              android layout width  match parent              android layout height  match parent              class  com google android gms maps SupportMapFragment    gt       lt  RelativeLayout gt   lt   lt com example ui layout MapWrapperLayout gt    Fragment   Override public View onCreateView LayoutInflater inflater  ViewGroup container  Bundle savedInstanceState        setHasOptionsMenu true       if  view    null            ViewGroup parent    ViewGroup  view getParent            if  parent    null               parent removeView view                       try           view   inflater inflate R layout map view  null           if view  null               ViewGroup root    ViewGroup  view findViewById R id root         Override public void onDestroyView         super onDestroyView        Fragment fragment   this getSherlockActivity   getSupportFragmentManager   findFragmentById R id map       if  fragment    null          getFragmentManager   beginTransaction   remove fragment  commit

[android] Duplicate ID, tag null, or parent id with another fragment for com.google.android.gms.maps.MapFragment

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