flet alertDialog

[jk-2022]

Question

bonjour ! j'ai un souci avec le contrôle alertDialog de flet, j'ai ouvert un premier alertdialog qui contient un contenaire avec un bouton qui doit en principe ouvrir un autre alertdialog, ce dernier s'ouvre mais le premier bug!

Code sample

No response

Error message

No response

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• I have searched for answers to my question both in the issues and in previous discussions.

[ndonkoHenri]

Please provide some more context (code, video capture).

[jk-2022]

import flet
from flet import *

def main(page:Page):
page.title="Alert Dialg"
page.window_width=300
page.window_height=500
page.horizontal_alignment="center"

def closeFirstDialog(e):
    first_dlg.open=False
    page.update()
    

def showFirstModal(e):
    page.dialog=first_dlg
    first_dlg.open=True
    page.update()
    

def closeSecondDialog(e):
    second_dlg.open=False
    page.update()
    

def showSecondModal(e):
    page.dialog=second_dlg
    second_dlg.open=True
    page.update()
    
first_btn=ElevatedButton("Open first modal", on_click=showFirstModal)
second_btn=ElevatedButton("Open Second modal", on_click=showSecondModal)
    
first_dlg=AlertDialog(
        title=Text("First Modal"),
        modal=True,
        content=second_btn,
        actions=[
            ElevatedButton('close',on_click=closeFirstDialog)
        ]
    )

second_dlg=AlertDialog(
        title=Text("Second Modal"),
        content=Text("Second Modal open"),
        actions=[
            ElevatedButton('close',on_click=closeSecondDialog)
        ]
    )

    



page.add(first_btn)
page.update()

flet.app(main)

[FeodorFitsner]

Try adding some delay, like 0.1 seconds between closing first dialog and opening the second?

[jk-2022]

[ndonkoHenri]

As suggested by @FeodorFitsner, I added a small time delay/sleep just before opening the new/second dialog as seen in the modified showSecondModal function below:

    def showSecondModal(e):
        # close the first dialog, update the page, sleep... 
        first_dlg.open = False
        page.update()
        time.sleep(0.01)
       
        # ... before opening the second dialog
        page.dialog = second_dlg
        second_dlg.open = True
        page.update()

Little Notes:

• I must mention that extremely small values such as 0.001 seconds failed on my end, hence I used 0.01 (any value above this will equally be OK), which is also quite good, as the delay/sleep is not noticed by the human eye :)
• You might find these utility functions useful: page.close_dialog(), page.show_dialog(dialog)

Let me know if you have any questions.

[jk-2022]

tanks😎😎😎🎉