Recently I migrated a project from Eclipse to Android Studio. Everything is setup and working fine except for my one fragment which uses a SupportMapFragment. The below findFragmentById (which worked when building in Eclipse) is now returning null :(
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
SupportMapFragment m = ((SupportMapFragment) getActivity().getSupportFragmentManager().findFragmentById(R.id.safety_map));
snippet of xml...
<FrameLayout 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"
android:orientation="vertical" >
<fragment
android:id="@+id/safety_map"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginBottom="40dp"
map:cameraTargetLat="@string/livesafe_latitude"
map:cameraTargetLng="@string/livesafe_longitude"
map:uiZoomControls="false"
class="com.google.android.gms.maps.SupportMapFragment"/>
Here are my dependencies in my build.gradle:
dependencies {
//google analytics
compile 'com.google.apis:google-api-services-analytics:v3-rev103-1.19.0'
//support library for api 10
compile 'com.android.support:support-v4:21.0.0'
//google play services
compile 'com.google.android.gms:play-services:6.1.11'
compile project(':facebook')
compile files('libs/android-support-multidex.jar')
compile files('libs/aws-android-sdk-1.6.0-debug.jar')
compile files('libs/FlurryAnalytics_3.3.2.jar')
}
I haven't changed any code in the xml file or the Fragment class that previously worked in Eclipse.
Judging by the fact that you're overriding Fragment.onActivityCreated()
, I take it that your layout containing the map fragment is the layout for your Fragment
. In that case, the SupportMapFragment
is a child fragment of your hosting Fragment
. When you attempt to retrieve it, you're using the Activity
FragmentManager
. You should instead use your Fragment
's FragmentManager
:
For example, this:
SupportMapFragment m = ((SupportMapFragment) getActivity()
.getSupportFragmentManager().findFragmentById(R.id.safety_map));
becomes:
SupportMapFragment m = ((SupportMapFragment) getChildFragmentManager()
.findFragmentById(R.id.safety_map));
Yes. It's not work for targetSdkVersion 21, if your Map fragment is inner part of Fragment (due to some issues, that mentioned this and this).
As temporary resolving can advice such trick:
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_container);
if (fragment == null) {
fragment = SupportMapFragment.newInstance();
fm.beginTransaction().replace(R.id.map_container, fragment).commit();
}
}
}
The following code worked for me. I was using Google Map in a Fragment
:
SupportMapFragment m = ((SupportMapFragment) getChildFragmentManager() .findFragmentById(R.id.safety_map));
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With