Is there a way to check if android WindowManager already contains a view?

You can check to see if the view's window token is null:

if(view.getWindowToken() != null){
    WindowManager.removeView(view);
}

You could also just catch the exception:

try{
    WindowManager.removeView(view);
}catch(IllegalArgumentException e){
    Log.e(debug_tag, "view not found");
}

Its also a better way to check its already added on window or not.

if (view.getParent() != null)) {
    windowsManager.removeView(view);
}

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