Android SupportMapFragment inside Fragment

Question

I'm trying to use SupportMapFragment inside a fragment. On the first launch, the map is display without any error.

But when I perform a transaction to another fragment, and after that return to the map, I have an error inflating fragment. But I don't have any error when I make en new instance of the fragment that contains the map.

Here is my layout :

<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"
    android:animateLayoutChanges="true"
    tools:context=".ui.HomeMapFragment">

    <fragment
        android:id="@+id/map"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/footer"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true"
        android:name="com.google.android.gms.maps.SupportMapFragment" />

    <FrameLayout
        android:id="@+id/footer"
        android:layout_height="110dp"
        android:layout_width="match_parent"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:background="@color/colorPrimary"/>

</RelativeLayout>

And I instanciate my SupportMapFragment in onCreateView like this :

 //Instantiate the map fragment
 mHolder.supportMapFragment = (SupportMapFragment) getChildFragmentManager().findFragmentById(R.id.map);

And I call onMapReady in onActivityCreated :

if (mHolder.supportMapFragment != null)
     mHolder.supportMapFragment.getMapAsync(this);

Error log :

    FATAL EXCEPTION: 
    main  Process: xxx.xxxx.xxxx, PID: 4441
android.view.InflateException: Binary XML file line #8: Error inflating class fragment 
    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:763) 
    at android.view.LayoutInflater.rInflate(LayoutInflater.java:806) 
    at android.view.LayoutInflater.inflate(LayoutInflater.java:504) 
    at uk.co.chrisjenx.calligraphy.CalligraphyLayoutInflater.inflate(CalligraphyLayoutInflater.java:60) 
    at android.view.LayoutInflater.inflate(LayoutInflater.java:414) 
    at xxx.xxxx.xxxx.ui.HomeMapFragment.onCreateView(HomeMapFragment.java:234) 
    at android.support.v4.app.Fragment.performCreateView(Fragment.java:1974) 
    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1067) 
    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1252) 
    at android.support.v4.app.BackStackRecord.popFromBackStack(BackStackRecord.java:971) 
    at android.support.v4.app.FragmentManagerImpl.popBackStackState(FragmentManager.java:1670) 
    at android.support.v4.app.FragmentManagerImpl.popBackStackImmediate(FragmentManager.java:586) 
    at android.support.v4.app.FragmentActivity.onBackPressed(FragmentActivity.java:189) 
    at com.xxx.xxx.ui.HomeActivity.onBackPressed(HomeActivity.java:71)

I know that it's not a good thing to hard code a fragment inside the layout of a fragment but I've already tried to perform this using a frameLayout but I get many more error

Competition

Answer 1

If you want to have map in fragment, you need to use MapView instead of SupportMapFragment How to use MapView in android using google map V2?

Illboding

It is not compulsory to have MapView. See working answer at https://mcmap.net/q/567648/-how-to-use-supportmapfragment-inside-a-fragment – Nyala

unsatisfied answer. See @Nepster comment. – Utoaztecan

@Nepster answer does not work ideally. For example, it recreates SupportMapFragment each time when fragment is hidden and shown again. This drawback isn't the case with MapView – Jarvey

Answer 2

Works in 2017 (Kotlin):

override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)

        val mapFragment = childFragmentManager.findFragmentById((R.id.map)) as SupportMapFragment
        mapFragment.getMapAsync(this)
    }

Sundew

I was importing the reference to the map fragment directly before calling getMapAsync(), but that caused a run-time crash (casting it to FrameLayout?). Only thing that worked for me was above solution, using childFragmentManager to find the fragment. – Franciskus