DatePicker crashes when showing a Fragment

Question

I'm trying to use date picker widget out of the docs example here: docs

However when i call newFragment.show(getSupportFragmentManager(), "datePicker");

application crashes and stack trace shows the following:

FATAL EXCEPTION: main Process: com.wgu.andrey.clp1, PID: 8125
                                                               java.lang.IllegalStateException: Activity has been destroyed
                                                                   at android.support.v4.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1864)
                                                                   at android.support.v4.app.BackStackRecord.commitInternal(BackStackRecord.java:650)
                                                                   at android.support.v4.app.BackStackRecord.commit(BackStackRecord.java:609)
                                                                   at android.support.v4.app.DialogFragment.show(DialogFragment.java:143)
                                                                   at com.wgu.andrey.clp1.Terms.showDatePickerDialog(Terms.java:67)

DatePickerFragment.java

public class DatePickerFragment extends DialogFragment
    implements DatePickerDialog.OnDateSetListener {

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    // Use the current date as the default date in the picker
    final Calendar c = Calendar.getInstance();
    int year = c.get(Calendar.YEAR);
    int month = c.get(Calendar.MONTH);
    int day = c.get(Calendar.DAY_OF_MONTH);

    // Create a new instance of DatePickerDialog and return it
    return new DatePickerDialog(getActivity(), this, year, month, day);
}

public void onDateSet(DatePicker view, int year, int month, int day) {
    // Do something with the date chosen by the user
}

}

Terms.java

public void showDatePickerDialog(View v) {
    DialogFragment newFragment = new DatePickerFragment();
    newFragment.show(getSupportFragmentManager(), "datePicker");
}

Answer 1

On the same lines what @Mike said, terms class can't be a sub class of the activity. Move the method to its own utility class and then call that method by Either passing the context or passing the fragment manager.

Something like this:

public void showDatePickerDialog(View v, AppCompatActivity context) {
        DialogFragment newFragment = new DialogFragment();
        newFragment.show(context.getSupportFragmentManager(), "TAG");
}

Alternatively, using FragmentManager

public void showDatePickerDialog(View v, FragmentManager fm) {
        DialogFragment newFragment = new DialogFragment();
        newFragment.show(fm, "datePicker");
}