smart_page_navigation

pub package

In this Flutter package you will have full navigation with bottom navigation bar exactly like the way Instagram works.

Created by Claudio Oliveira (https://twitter.com/cldlvr)

Add dependency

dependencies:
  smart_page_navigation: ^1.1.1 #latest version

Easy to use

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: "Smart Page Navigation Example",
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key? key}) : super(key: key);

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  late SmartPageController controller;
  List<StatefulWidget> pages = [
    PageA(),
    PageB(),
    PageC(),
  ];

  @override
  void initState() {
    super.initState();

    controller = SmartPageController.newInstance(
      initialPages: pages,
      context: context,
    );

    //Recommended if you want to check which page is open to perform some
    //specific action such as showing/hiding widgets.
    controller.addListener(() {
      if (mounted) setState(() {});
    });
  }

  @override
  Widget build(BuildContext context) {
    return WillPopScope(
      onWillPop: () async => controller.back(),
      child: Scaffold(
        appBar: AppBar(
          title: Text("Smart Page Navigation Example"),
        ),
        body: SmartPageNavigation(
          controller: controller,
        ),
        bottomNavigationBar: SmartPageBottomNavigationBar(
          controller: controller,
          options: SmartPageBottomNavigationOptions(),
          children: [
            BottomIcon(icon: Icons.home, title: "Home"),
            BottomIcon(
              icon: Icons.shopping_cart,
              title: "Cart",
              badge: Text(
                "3",
                style: TextStyle(
                  color: Colors.white,
                  fontSize: 10,
                  fontWeight: FontWeight.bold,
                ),
              ),
              badgeColor: Colors.redAccent,
            ),
            BottomIcon(
              icon: Icons.settings,
              title: "Settings",
              //hideBottomNavigationBar: true,
            ),
          ],
          onTap: (int index, BuildContext context) {
            print("Clicked at index $index");
            return true;
          },
        ),
      ),
    );
  }
}

Controller Initialization

//Attention! It is recommended that .newInstance 
//be called only once during your application's lifecycle.
//To get the controller instance on other pages use .getInstance().

controller = SmartPageController.newInstance(
  initialPages: [
    PageA(),
    PageB(),
    PageC(),
  ],
  context: context,
);

context: BuildContext.
initialPages: List of StatefulWidgets (pages of your app).
initialPage: index of first page of initialPages. Default: 0

Properties

List<StatefulWidget> pages: Stack of pages.
List<StatefulWidget> initialPages: Initial page stack.
int currentBottomIndex: Index of selected bottom navigation bar option.

Methods

newInstance(): Create a new instance of the controller.
getInstance(): Get the current instance of the controller.
insertPage(StatefulWidget newPage): Inserts a new page into the stack. By default the page is displayed, but you can prevent this by setting goToNewPage equal to false.
goToPage(int index): Navigate to index page.
selectBottomTab(int index): This method navigates to the screen configured in the index position of the bottom navigation bar.
resetNavigation(): Clears all navigation.
showBottomNavigationBar(): Show bottom navigation.
hideBottomNavigationBar(): Hide bottom navigation.
refreshViews(): Update widget state.
back(): Return to previous page.

Listeners

addListener(Function listener): Method that listens when any changes occur.
addOnBackPageListener(Function listener): Method that listens when the .back() method is called.
addOnBottomNavigationBarChanged(Function(int index) listener): Method that listens for changes in the bottom navigation bar.
addOnBottomOptionSelected(Function(int index) listener): Method that listens when one of the options in the lower navigation bar is selected.
addOnInsertPageListener(Function(StatefulWidget page, int newPageIndex) listener): Method that listens when a new page is added to the stack.
addOnPageChangedListener(Function(int index) listener): Method that listens when the current page index changes.
addOnResetNavigation(Function listener): Method that listens when navigation is reset.

SmartPageBottomNavigationBar

SmartPageController controller: Instance of SmartPageController.
List<BottomIcon> children: List of BottomIcon.
bool onTap(int index)?: Callback method when a bottom bar button is pressed. Return false if you want to block browsing.
SmartPageBottomNavigationOptions? options: SmartPageBottomNavigationOptions instance with styling options.

BottomIcon

String? title: Text displayed below option icon (if any).
TextStyle? textStyle: Title text style.
IconData? icon: Option icon.
bool? hideBottomNavigationBar: Hides the bottom navigation bar when the option is selected.
Widget? badge: Display a widget as a badge.
Color? badgeColor: Badge color.
Widget? selectedWidget: If you want to customize the content of the option, you can add the selectedWidget, then you will have to configure the unselectedWidget as well. Warning: You must obligatorily use selectedWidget/unselectedWidget OR title for the option content to be displayed.
Widget? unselectedWidget: Widget displayed when the option is not selected.

SmartPageBottomNavigationOptions

height: (double) Widget height.
showIndicator: (bool) Show/hide top indicator of selected option.
indicatorColor: (Color) Top indicator color.
backgroundColor: (Color) Widget background color.
showBorder: (bool) Show/hide border.
borderColor: (Color) Border color.
selectedColor: (Color) Icon and text color when option is selected.
unselectedColor: (Color) Icon and text color when the option is not selected.