Set a border at the top in a navbarStyle predefined

[bilalshahid13]

Set a border at the top in a navbarStyle predefined

[BilalShahid13]

onItemSelected: (int) {
          setState(
              () {}); // This is required to update the nav bar if Android back button is pressed
        },

This is not required in your case BTW as you are not using a custom style.

[StefanSpeterDev]

Awesome! I'm running the latest version anyway, I will try that tmr and if it works I will close the issue! Thx for the reply

[BilalShahid13]

It is possible but only in version 2.0.0 and above. I would do it like this using the property decoration:

decoration: NavBarDecoration(
          border: Border(
            top: BorderSide(width: 5.0, color: Colors.black),
          ),
),

[StefanSpeterDev]

I'm facing an issue caused by borderRadius, here is what it says:
The following assertion was thrown during paint(): A borderRadius can only be given for uniform borders. 'package:flutter/src/painting/box_border.dart': Failed assertion: line 523 pos 12: 'borderRadius == null'
And below it's the code I'm using:

@override
  Widget build(BuildContext context) {
    return PersistentTabView(
        controller: _controller,
        screens: _buildScreens(),
        items: _navBarsItems(),
        // Redundant here but defined to demonstrate for other than custom style
        confineInSafeArea: true,
        backgroundColor: Colors.white,
        popAllScreensOnTapOfSelectedTab: true,
        handleAndroidBackButtonPress: true,
        decoration: NavBarDecoration(
          border: Border(
            top: BorderSide(width: 5.0, color: Colors.black),
          ),
        ),
        onItemSelected: (int) {
          setState(
              () {}); // This is required to update the nav bar if Android back button is pressed
        },
        itemCount: 5,
        navBarStyle:
            NavBarStyle.style5 // Choose the nav bar style with this property
        );
  }

I've noticed that if I add a bottom/left/right to the border with the exact same properties (same width and same color), the error doesn't show anymore.
The problem is that it makes my navbar looks super weird.

[BilalShahid13]

Upgrade to version 2.0.5 :) Thanks for reporting!

[StefanSpeterDev]

It works! Good job :)