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 code  public class copy actions service extends Service       ImageView copy ImageView      WindowManager windowManager      WindowManager LayoutParams layoutParams        Override     public IBinder onBind Intent arg0                   TODO Auto-generated method stub         return null              Override      public void onCreate                 windowManager  WindowManager getSystemService WINDOW SERVICE            copy ImageView new ImageView this           copy ImageView setImageResource R drawable ic launcher           copy ImageView setAlpha 245           copy ImageView setOnClickListener new OnClickListener                           Override             public void onClick View arg0                                showCustomPopupMenu                                       layoutParams new WindowManager LayoutParams                  WindowManager LayoutParams WRAP CONTENT                  WindowManager LayoutParams WRAP CONTENT                  WindowManager LayoutParams TYPE PHONE                  WindowManager LayoutParams FLAG NOT FOCUSABLE                  PixelFormat TRANSLUCENT            layoutParams gravity Gravity TOP Gravity CENTER          layoutParams x 0          layoutParams y 100           windowManager addView copy ImageView  layoutParams               private void showCustomPopupMenu                 LayoutInflater layoutInflater  LayoutInflater getSystemService Context LAYOUT INFLATER SERVICE           View view layoutInflater inflate R layout xxact copy popupmenu  null            PopupWindow popupWindow new PopupWindow            popupWindow setContentView view           popupWindow setWidth LinearLayout LayoutParams WRAP CONTENT           popupWindow setHeight LinearLayout LayoutParams WRAP CONTENT           popupWindow setFocusable true            popupWindow showAtLocation view  Gravity NO GRAVITY  0  0                          every thing fine but when i click on float button app stop and this error is shown on logcat     11-23 02 18 58 217  E AndroidRuntime 3231   android view WindowManager BadTokenException  Unable to add window -- token null is not valid  is your activity running    but i have no activity     i want to popup menu show after user click on float icon  but popup menu only can show text    how to i can show a popup menu with icons

User · Accepted Answer

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   lt uses-permission android name  android permission SYSTEM ALERT WINDOW   gt

User · Answer

If you re using getApplicationContext   as Context in Activity for the dialog like this  Dialog dialog   new Dialog getApplicationContext       then use YourActivityName this  Dialog dialog   new Dialog YourActivityName this

User · Answer

If you use another view make sure to use view getContext   instead of this or getApplicationContext

User · Answer

You need to pass your activity in the constructor     PopupWindow popupWindow   new PopupWindow YourActivity this

User · Answer

This error happens when you are trying to show popUpWindow too early  to fix it  give Id to main layout as main layout and use below code  Java    findViewById R id main layout  post new Runnable        public void run            popupWindow showAtLocation findViewById R id main layout   Gravity CENTER  0  0              Kotlin    main layout post         popupWindow  showAtLocation main layout  Gravity CENTER  0  0          Credit to  kordzik

User · Answer

You should not put the windowManager addView in onCreate  Try to call the windowManager addView after onWindowFocusChanged and the status of hasFoucus is true    Override public void onWindowFocusChanged boolean hasFocus        super onWindowFocusChanged hasFocus         code here       that you can add a flag that you can call windowManager addView now

User · Answer

PopupWindow can only be attached to an Activity  In your case you are trying to add PopupWindow to service which is not right   To solve this problem you can use a blank and transparent Activity  On click of floating icon  launch the Activity and on onCreate of Activity show the PopupWindow    On dismiss of PopupWindow  you can finish the transparent Activity  Hope this helps you

User · Answer

I was getting this error while trying to show DatePicker from Fragment  I changed val datePickerDialog   DatePickerDialog activity   applicationContext        to val datePickerDialog   DatePickerDialog requireContext          and it worked just fine

User · Answer

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

[android] Unable to add window -- token null is not valid; is your activity running?

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