Mike Mike - 4 months ago 30
Android Question

Android google maps loads on first open then crashes on 2nd open

I have implemented a google map in my android project in a fragment. When I load the fragment the first time it calls an async tasks and loads the markers and displays correctley.

But if I move to another fragment and then come back to the map it crashes once it tries to load again.

My error is:

android.view.InflateException: Binary XML file line #4: Error inflating class fragment
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java)
at android.view.LayoutInflater.inflate(LayoutInflater.java)
at android.view.LayoutInflater.inflate(LayoutInflater.java)
at com.beerportfolio.beerportfoliopro.BreweryMap.onCreateView(BreweryMap.java:28)
at android.support.v4.app.Fragment.performCreateView(Fragment.java:1500)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:938)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1115)
at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1478)
at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:446)
at android.os.Handler.handleCallback(Handler.java)
at android.os.Handler.dispatchMessage(Handler.java)
at android.os.Looper.loop(Looper.java)
at android.app.ActivityThread.main(ActivityThread.java)
at java.lang.reflect.Method.invokeNative(Method.java)
at java.lang.reflect.Method.invoke(Method.java)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java)
at dalvik.system.NativeStart.main(NativeStart.java)
Caused by: java.lang.IllegalArgumentException: Binary XML file line #4: Duplicate id 0x7f09003f, tag null, or parent id 0x0 with another fragment for com.google.android.gms.maps.SupportMapFragment
at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:296)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java)
at android.view.LayoutInflater.inflate(LayoutInflater.java)
at android.view.LayoutInflater.inflate(LayoutInflater.java)
at com.beerportfolio.beerportfoliopro.BreweryMap.onCreateView(BreweryMap.java:28)
at android.support.v4.app.Fragment.performCreateView(Fragment.java:1500)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:938)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1115)
at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1478)
at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:446)
at android.os.Handler.handleCallback(Handler.java)
at android.os.Handler.dispatchMessage(Handler.java)
at android.os.Looper.loop(Looper.java)
at android.app.ActivityThread.main(ActivityThread.java)
at java.lang.reflect.Method.invokeNative(Method.java)
at java.lang.reflect.Method.invoke(Method.java)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java)
at dalvik.system.NativeStart.main(NativeStart.java)


In the error it says something about a duplicate so I assumed it was having trouble re-loading the map markers, so I tried to place a clear markers at the start but that doesn't fix it.

My code for my map is:

public class BreweryMap extends Fragment {

public BreweryMap(){}

String beerId = "";

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {

View rootView = inflater.inflate(R.layout.activity_brewmap, container, false);
setHasOptionsMenu(true);

//get user information
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getActivity());
String userName = prefs.getString("userName", null);
String userID = prefs.getString("userID", null);


GoogleMap mMap;
mMap = ((SupportMapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();

mMap.clear();

//add url
String url = "myURL";

//call async to get breweries to add to
new GetVisitedBreweries(getActivity(), mMap).execute(url);


return rootView;
}


The async tasks gets JSON parses the information and loads the map markers onto the map.

Lal Lal
Answer

From this link..Check it..

you declare the fragment programatically, not in XML. This probably means nesting layouts.

<?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"
   android:layout_width="match_parent"
   android:layout_height="match_parent" >

<!-- Lots of fancy layout -->   

<RelativeLayout
        android:id="@+id/map"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
    </RelativeLayout>
</RelativeLayout>

Then you need to create your fragment programatically, but it needs to be done carefully with consideration for the Fragments lifecycle (http://developer.android.com/reference/android/app/Fragment.html#getChildFragmentManager()). To ensure everything is created at the right time, your code should look like this.

public class MyFragment extends Fragment {

private SupportMapFragment fragment;
private GoogleMap map;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    return inflater.inflate(R.layout.layout_with_map, container, false);
}

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    FragmentManager fm = getChildFragmentManager();
    fragment = (SupportMapFragment) fm.findFragmentById(R.id.map);
    if (fragment == null) {
        fragment = SupportMapFragment.newInstance();
        fm.beginTransaction().replace(R.id.map, fragment).commit();
    }
}

@Override
public void onResume() {
    super.onResume();
    if (map == null) {
        map = fragment.getMap();
        map.addMarker(new MarkerOptions().position(new LatLng(0, 0)));
    }
}
}
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