Drop-Down Spinner inside of Pop-Up Window

Question

How can I have a drop down spinner inside of a popup window? I've tried looking, but the only answers I have found say to create a dialog spinner instead (which is not what I want). I tried doing it with a custom adapter and seem to be getting an error do to context (basically, once the popup window initiates, the context for my activity is gone) so how can I get context from the pop-up window or how can I implement a drop down spinner?

edit:

Adapter:

public class SpinAdapter extends ArrayAdapter<contact>{

    // Your sent context
    private Context context;
    // Your custom values for the spinner (User)
    private ArrayList<contact> values;

    public SpinAdapter(Context context, int textViewResourceId,
                       ArrayList<contact> values) {
        super(context, textViewResourceId, values);
        this.context = context;
        this.values = values;
    }

    public int getCount(){
        return values.size();
    }

    public contact getItem(int position){
        return values.get(position);
    }

    public long getItemId(int position){
        return position;
    }


    // And the "magic" goes here
    // This is for the "passive" state of the spinner
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        // I created a dynamic TextView here, but you can reference your own  custom layout for each spinner item
        TextView label = new TextView(context);
        label.setTextColor(Color.BLACK);
        // Then you can get the current item using the values array (Users array) and the current position
        // You can NOW reference each method you has created in your bean object (User class)
        label.setText(values.get(position).toString());

        // And finally return your dynamic (or custom) view for each spinner item
        return label;
    }

    // And here is when the "chooser" is popped up
    // Normally is the same view, but you can customize it if you want
    @Override
    public View getDropDownView(int position, View convertView,
                                ViewGroup parent) {
        TextView label = new TextView(context);
        label.setTextColor(Color.BLACK);
        label.setText(values.get(position).toString());

        return label;
    }
}

Starting Spinner in Pop-Up Window:

private void initiatePopupWindow(){
    try{
        ArrayList<contact> Con = tinydb.getListAdd("address", contact.class);
        contact a = new contact("a","b");
        Con.add(a);
        SpinAdapter adapt;
        adapt = new SpinAdapter(todoroom.this ,
                android.R.layout.simple_spinner_item,
                Con);
        LayoutInflater inflater = (LayoutInflater) todoroom.this
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        View layout = inflater.inflate(R.layout.addpop,
                (ViewGroup) findViewById(android.R.id.background));
        pw = new PopupWindow(layout,300,300,true);
        //pw.isTouchable();
       // pw.isFocusable();
        pw.showAtLocation(layout, Gravity.CENTER, 0,0);

        //final EditText address = (EditText)layout.findViewById(R.id.editAddress) ;
        final Spinner address = (Spinner) layout.findViewById(R.id.spinner);
        final EditText name = (EditText)layout.findViewById(R.id.editName);

        address.setAdapter(adapt);


        ImageButton back = (ImageButton)layout.findViewById(R.id.cancelBut);
        back.setOnClickListener(
                new View.OnClickListener(){
                   public void onClick(View view){
                        pw.dismiss();
                    }


        }
        );

        Button add = (Button)layout.findViewById(R.id.addBut);
        add.setOnClickListener(
                new View.OnClickListener(){
                  public void onClick(View view){
                      task a = new task(name.getText().toString(), address.getSelectedItem().toString() );
                      todos.add(a);
                      tinydb.putListTask("tasks",(ArrayList)todos);
                      pw.dismiss();
                      list.setAdapter(adapter);

                  }
                }
        );



    } catch (Exception e){
        e.printStackTrace();


    }
}

Error Message:

Process: com.example.vlad.gpslocate, PID: 27527
                                                                        android.view.WindowManager$BadTokenException: Unable to add window -- token android.view.ViewRootImpl$W@5c0ba7c is not valid; is your activity running?
                                                                            at android.view.ViewRootImpl.setView(ViewRootImpl.java:679)
                                                                            at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:342)
                                                                            at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:93)
                                                                            at android.widget.PopupWindow.invokePopup(PopupWindow.java:1378)
                                                                            at android.widget.PopupWindow.showAsDropDown(PopupWindow.java:1234)
                                                                            at android.widget.ListPopupWindow.show(ListPopupWindow.java:671)
                                                                            at android.widget.Spinner$DropdownPopup.show(Spinner.java:1235)
                                                                            at android.widget.Spinner.performClick(Spinner.java:770)
                                                                            at android.support.v7.widget.AppCompatSpinner.performClick(AppCompatSpinner.java:438)
                                                                            at android.view.View$PerformClick.run(View.java:22429)
                                                                            at android.os.Handler.handleCallback(Handler.java:751)
                                                                            at android.os.Handler.dispatchMessage(Handler.java:95)
                                                                            at android.os.Looper.loop(Looper.java:154)
                                                                            at android.app.ActivityThread.main(ActivityThread.java:6119)
                                                                            at java.lang.reflect.Method.invoke(Native Method)
                                                                            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
                                                                            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)