Unable to add window -- token null is not valid; is your activity running?
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);
This error happens when you are trying to show pop-up window too early, to fix it, give Id to the main layout as main_layout
and use the 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