DialogFragment setCancelable property not working

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

    View view = inflater.inflate(R.layout.dialog_test, container, true);
    getDialog().requestWindowFeature(STYLE_NO_TITLE);
    getDialog().setCancelable(false);

    return view;
}

instead of getDialog().setCancelable(false); you have to use directly setCancelable(false);

so the updated answer will be like this

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

    View view = inflater.inflate(R.layout.dialog_test, container, true);
    getDialog().requestWindowFeature(STYLE_NO_TITLE);
    setCancelable(false);

    return view;
}

Simple Solution in DialogFragment

Used

dialog.setCanceledOnTouchOutside(false)

Use the following Snippet

void showDialog() {
    DialogFragment newFragment = MyAlertDialogFragment.newInstance(
            R.string..alert_dialog_two_buttons_title);
    newFragment.setCancelable(false);
    newFragment.show(getFragmentManager(), "dialog");
}

and if you want to disable the out side touch around dialog use the following line of code

DialogFragment.getDialog().setCanceledOnTouchOutside(true);

In case you use alert builder (and probably in every case you wrap dialog inside a DialogFragment) to help build your dialog, please don't use getDialog().setCancelable(false) or Dialog.setCancelable(false) because it's not going to work. Use setCancelable(false) as shown in code below as it's mentioned in oficial android documentation:

public void setCancelable (boolean cancelable)

Added in API level 11 Control whether the shown Dialog is cancelable. Use this instead of directly calling Dialog.setCancelable(boolean), because DialogFragment needs to change its behavior based on this."

ref:http://developer.android.com/reference/android/app/DialogFragment.html#setCancelable(boolean)

public class MyDialogFragment extends DialogFragment {

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {

        LayoutInflater inflater = getActivity().getLayoutInflater();
        View view = inflater.inflate(R.layout.dialog_layout, null, false);
        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity())
                .setTitle("in case you want use a title").setView(view);

        AlertDialog alert = builder.create();
        // alert.setCancelable(false); <-- dont' use that instead use bellow approach
        setCancelable(false); <-  press back button not cancel dialog, this one works fine
        alert.setCanceledOnTouchOutside(false); <- to cancel outside touch

        return alert;
}