Calling DialogFragment from Fragment (not FragmentActivity)?

Check for import statements. If we use

ExampleDialogFragment dialog = new ExampleDialogFragment ();
dialog .show(getFragmentManager(), "example");

Then make sure to import

import android.app.DialogFragment;
import android.app.Fragment;

not from the support library.

import android.support.v4.app.DialogFragment;
import android.support.v4.app.Fragment;

When you create a new Dialog, you can simply call it using this (very) simple method from a Fragment.

DialogFragment dialog = DialogFragment.instantiate(getActivity(), "Hello world");
dialog.show(getFragmentManager(), "dialog");

If you want to use your own dialog, please use that kind of code.

public class MyDialogFragment extends DialogFragment
{
    //private View pic;

    public MyDialogFragment()
    {
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState)
    {
        View view = getActivity().getLayoutInflater().inflate(R.layout.fragment_my_dialog, new LinearLayout(getActivity()), false);

        // Retrieve layout elements
        TextView title = (TextView) view.findViewById(R.id.text_title);

        // Set values
        title.setText("Not perfect yet");

        // Build dialog
        Dialog builder = new Dialog(getActivity());
        builder.requestWindowFeature(Window.FEATURE_NO_TITLE);
        builder.getWindow().setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT));
        builder.setContentView(view);
        return builder;
    }
}

it will help if you need to show a fragment dialog inside a fragment

DialogFragment

public class DialogBoxFragment extends DialogFragment {
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState){
        View rootView = inflater.inflate(R.layout.dialog_fragment, container, false);
        getDialog().setTitle("simple dialog");
        return rootView;
    }
}

Now showing the fragment dialog into a fragment

DialogFragment dialogFragment = new DialogFragment ();
                            dialogFragment.show(getActivity().getFragmentManager(),"simple dialog");