getFragmentManager() returns null, with android.support.v4.app.DialogFragment support libraray

Question

here is the fragment dialog:

import android.support.v4.app.DialogFragment;  
public static class SensorMeasurmentsDialogFragment extends DialogFragment {

    public static SensorMeasurmentsDialogFragment newInstance(int title) {

        SensorMeasurmentsDialogFragment frag = new SensorMeasurmentsDialogFragment();
        Bundle args = new Bundle();
        args.putInt("title", title);
        frag.setArguments(args);
        return frag;

        @Override public Dialog onCreateDialog(Bundle savedInstanceState) {
            .....
        }
    }
}

the call to it is done from a regular activity not from a fragmentActivity because my activity already extends mapActivity.

m_measurmentDlg=SensorMeasurmentsDialogFragment.newInstance(R.string.app_name);
m_measurmentDlg.show(m_measurmentDlg.getFragmentManager(),"measurments");

any idea why is it Null?

score 1 · Answer 1 · answered Apr 21 '13 at 11:04

1

In one of my fragments, I was using replace so when I used add it worked good! might help you

answered Apr 21 '13 at 11:04

Rohit Mandiwal

10,258
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score 0 · Accepted Answer · answered Nov 06 '12 at 06:40

The activity must extend from FragmentActivity for you to be able to use Fragments. You might have to use a workaround at the moment until Google updates their map library.

You might have to use a modified compatibility lib such as this one:

https://github.com/petedoyle/android-support-v4-googlemaps

score 0 · Answer 3 · answered Dec 12 '12 at 05:47

0

I ran into this problem also. The problem happens with setRetainInstance(true) only. My workaround is to use the parent activity's FragmentManager object instead of the DialogFragment's FragmentManager.

answered Dec 12 '12 at 05:47

Tom anMoney

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getFragmentManager() returns null, with android.support.v4.app.DialogFragment support libraray

3 Answers3

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