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Join Stack Overflow to learn, share knowledge, and build your career. Connect and share knowledge within a single location that is structured and easy to search. Is it possible to detect when a Drawer is open so that we can run some routine to update its content?
A typical use case I have would be to display the number of followers, likers I think one simple solution is to override the leading property of your AppBar so you can have access when the menu icon is pressed an run hardware drawer pulls error API calls based on that. Yet I may have misunderstood your question because with the use case you provided, you usually need to manage it in a way that you hardware drawer pulls error listen to any change which will update the value automatically so I am not sure what are you trying to trigger when the drawer hardware drawer pulls error open.
If you are altering state with these functions to rebuild drawer items, you may encounter French Furniture Hardware Drawer Pulls Model the error: Unhandled Exception: setState or markNeedsBuild called during build. This can be handled by using the following two functions in initState source.
Example: Here on the back press, it first checks if the drawer is open, if yes then first Furniture Hardware Drawer Pulls Make it will close before exit. Unfortunately, at the moment there is no readymade solution. For example, I used this approach to synchronise the animation of the icon on the button and the location of the Drawer box.
If you are only interested in the final events of opening or closing the box, it is enough to call the callbacks in initState and dispose functions.
Stack Overflow for Teams — Collaborate and share knowledge with a hardware drawer pulls error group. Create a free Team What is Teams? Learn more. Flutter: possible to detect when a drawer is open? Ask Question. Asked 2 years, 11 months ago. Active 11 days ago. Viewed 11k times. NavigatorObserver is not the solution.
Can you instead show how you use Drawer? There is nothing special hardware drawer pulls error the way I use the Drawer, there is very little to say. I simply initialize the drawer at the Scaffold level.
I am waiting for a solution to detect when the drawer is open to further elaborate. But as you mentioned that the NavigatorObserver was not the solution, have you anything else in mind? Add a comment. Active Oldest Votes. Anyway here is the example. Shady Aziza Shady Aziza So simple and elegant Hardware drawer pulls error a lot. Won't detect drawer open via user slide action.
How to detect drawer with slide gesture? Run dispose when close drawer by any action. This can be handled by using the following two functions in initState source Option 1 WidgetsBinding.
Matthew Rideout 3, 22 22 silver badges 44 44 bronze badges. Hardware drawer pulls error accounts for both button presses and sliding the drawer open — Johnny Boy Dec 22 '18 at This solution worked perfectly for me.
It should've been accepted. Vivek Bansal Vivek Bansal 9 9 silver badges 18 18 bronze badges. You can use the dirty hack for this: to observe the visible position Used Furniture Hardware Drawer Pulls Size of the Drawer.
Yuriy Luchaninov Yuriy Luchaninov 9 9 silver badges 6 6 bronze badges. Exactly what I was looking for, thanks for sharing! Very useful if you need to sync the animation of a button with the drawer movement! Sign up or log in Sign up using Google.
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