How to make our list persistent, while navigating to different screens in flutter application?

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In my flutter application, the bottom navigation bar is present and there are two bottom navigation bar items. I am using a List view on both of the screen. When I navigate from one screen to another after some scrolling on that screen. I came back at top of the list not at the last position where I had left. How can I do persistence on both screens?


You can set keepScrollOffset to true.. https://api.flutter.dev/flutter/widgets/ScrollController-class.html

How to make my list persistent while navigating to different screens , Most apps contain several screens for displaying different types of information. For example, an app might have a screen that displays products. The next few sections show how to navigate between two routes, using these steps: Center( child: RaisedButton( onPressed: () { // Navigate back to first route when tapped. } � Bottom navigation in Flutter app. Adding a scrollable list to a Flutter app. Okay, so now we have the bottom navigation working, it’s time to add a list. In my application, I want to show a list of beers. I’ve gone ahead and created a simple JSON file to store the data. Create an assets folder in the main catalogue and add the file beers.json.


You can use the PageStorageKey:

@override
Widget build(BuildContext context) {
    return ListView.builder(
        key: new PageStorageKey('key_name'),
        itemBuilder: ...
    );
}

Navigate to a new screen and back, Flutter Gallery [running app] � Flutter Gallery [repo] � Sample apps on GitHub Create a detail screen to extract the arguments; Navigate and pass the change during runtime, we'll have to require the list of todos within the scope of this widget. We pass in our ListView.builder as body of the widget we're returning to build() . Navigation is the key part of the UX for any mobile application. Due to the limited screen on mobile devices, users will always be navigating between different screens, for example, from a list to a detail screen, from the shopping cart to the checkout screen, from the menu into a form, and many other cases.


You can use PageStorage and PageBucket for saving ListView's scroll offset.

The working example is https://codepen.io/ntaoo/pen/LYpyrZJ .

The essential part is as below,

final bucket = PageStorageBucket(); _widgetOptions = <Widget>[ PageStorage( bucket: bucket, child: ListView( key: PageStorageKey<String>('0'), children: <Widget>[ Text( 'Index 0: Home Start\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n to... \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nEnd', style: optionStyle, ), ], ), ), PageStorage( bucket: bucket, child: ListView( key: PageStorageKey<String>('1'), children: <Widget>[ Text( 'Index 1: Business Start\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n to... \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nEnd', style: optionStyle, ), ], ), ), PageStorage( bucket: bucket, child: ListView( key: PageStorageKey<String>('2'), children: <Widget>[ Text( 'Index 2: School Start\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n to... \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nEnd', style: optionStyle, ), ], ), ), ];

ScrollController test code is a perfect usage example of keepScrollOffset'.

https://github.com/flutter/flutter/blob/master/packages/flutter/test/widgets/scroll_controller_test.dart#L313

Send data to a new screen, How to implement named routes for navigating between screens. From another platform? However, if you need to navigate to the same screen in many parts of your app, this approach can result in initialRoute: '/', routes: { // When navigating to the "/" route, build the check Show tests; check Editable test/ solution. It is auto-handled by Flutter navigation system. Flutter navigation back – fluttermaster.com. Also, you will need a method to manually control the navigation in your app, right? What you need to do is to pop from history stack, and it will redirect us to previous screen in Flutter. It can easily done by this call in //TODO part of SubPage class.


Navigate with named routes, How to animate a widget from one screen to another. It's often helpful to guide users through an app as they navigate from screen to screen. A common� Bottom Navigation Bar using Provider | Flutter. So I have created a list for the screens and change the screens with an index which is provided by the provider and the tab changes the provider


Animate a widget across screens, How to animate from one page to another. Sometimes, though, a custom transition between screens can make an app routes by animating the new route into view from the bottom of the screen. AnimatedWidget that rebuild themselves when the value of the animation check Show tests; check Editable test/solution. Most apps contain several screens for displaying different types of information. For example, an app might have a screen that displays products. When the user taps the image of a product, a new screen displays details about the product. Terminology: In Flutter, screens and pages are called routes. The remainder of this recipe refers to routes.


Animate a page route transition, A do all, highly customizable persistent/static bottom navigation bar for flutter. Includes up-to In your flutter project add the dependency: true, // This needs to be true if you want to move up the screen when keyboard appears. List< Widget> _buildScreens() { return [ MainScreen(), SettingsScreen() ]; } It is built with container widgets (e.g. MaterialApp) which displays different home screens based on the navigation and user choices. Since we’ve already created MaterialApp widgets in all our earlier examples, we’ll use the same to create the multi page applications too. We’ll create multi page application with two screens as an example.