Kivy: Dismiss One Popup From Another Popup

I use kivy.factory.Factory to open the popups, but it's not working when I want to close them. Code: from kivy.app import App from kivy.lang import Builder x = Builder.load_strin

Solution 1:

The problem is that every time you call F.Foo() you are creating a new object of the Foo class, so in your case F.FirstPopup().open() of the Screen is different from F.FirstPopup().dismiss() SecondPopup, in other words you are closing a popup that you have just created instead of the start. To make it obvious, you can change your code to:

# ...
Button:
    text: 'Press to Close Both Popups'
    on_press:
        print(F.FirstPopup())

Obtaining the following:

<kivy.factory.FirstPopup object at 0x7f8f9a183e18>
<kivy.factory.FirstPopup object at 0x7f8f996fc118>
<kivy.factory.FirstPopup object at 0x7f8f996fc388>
<kivy.factory.FirstPopup object at 0x7f8f996fc5f8>
<kivy.factory.FirstPopup object at 0x7f8f996fc528>
<kivy.factory.FirstPopup object at 0x7f8f996fc2b8>
<kivy.factory.FirstPopup object at 0x7f8f996fc048>

And as you see each time you press it you get a new id indicating that it is a new object.

So a possible solution is to save a reference of the object created by a property:

fromkivy.appimportAppfromkivy.langimportBuilderx=Builder.load_string("""#:import F kivy.factory.Factory#:import Window kivy.core.window.WindowScreen:Button:text:'Press to Open First Popup'on_press:F.FirstPopup().open()<FirstPopup@Popup>:title:'First Popup'size_hint:None,Nonewidth:Window.width/1.4height:Window.width/1.4Button:text:'Press to Open Second Popup'on_press:second_popup=F.SecondPopup()second_popup.first_popup=rootsecond_popup.open()<SecondPopup@Popup>:title:'Second Popup'size_hint:None,Nonewidth:Window.width/1.8height:Window.width/1.8first_popup:NoneButton:text:'Press to Close Both Popups'on_press:root.dismiss()if root.first_popup is not None:root.first_popup.dismiss()""")

class MyApp(App):
    def build(self):
        return x

MyApp().run()