Unable to add window — token null is not valid; is your activity running?

Question

i want to show a custom popup menu when user click on a floating icon

the float icon create with an service and i have no activity

this is my floating icon c

Answer 1

In my case, I was inflating a PopupMenu at the very beginning of the activity i.e on onCreate()... I fixed it by putting it in a Handler

  new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
                PopupMenu popuMenu=new PopupMenu(SplashScreen.this,binding.progressBar);
                popuMenu.inflate(R.menu.bottom_nav_menu);
                popuMenu.show();
            }
        },100);

Answer 2

I had the same problem as you, it looks like you used the tutorial from http://www.piwai.info/chatheads-basics like I did. The problem is that you cannot reliably pass the current activity to the popup window, because you have no control over the current activity. It looks like there might be a unreliable way to get the current activity, but I don't recommend that.

The way I fixed it for my app was to not use the popup window, but instead make my own through the window manager.

private void showCustomPopupMenu()
    {
                windowManager2 = (WindowManager)getSystemService(WINDOW_SERVICE);
                LayoutInflater layoutInflater=(LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                View view=layoutInflater.inflate(R.layout.xxact_copy_popupmenu, null);
                params=new WindowManager.LayoutParams(
                        WindowManager.LayoutParams.WRAP_CONTENT,
                        WindowManager.LayoutParams.WRAP_CONTENT,
                        WindowManager.LayoutParams.TYPE_PHONE,
                        WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
                        PixelFormat.TRANSLUCENT);

                params.gravity=Gravity.CENTER|Gravity.CENTER;
                params.x=0;
                params.y=0;
                windowManager2.addView(view, params);  
    }

If you want this to look like a popup window, just add a transparent gray view as the background and add a onClickListener to it to remove the view from the windowManager object.

I know this isn't as convenient as a popup, but from my experience, it is the most reliable way.

and don't forget to add permission in your manifest file

<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>