Flutter Tutorial

custom_navigation_bar

A custom navigation bar with bubble click effect.

This package gives you a cute bubble effect when you click on the navigation bar.

Dribbble:

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Implemented:

screenshot

Gallery

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How to install

Add this to your package's pubspec.yaml file:

dependencies:
  custom_navigation_bar: ^0.3.0

Documentation

You can customize these attributes in the navigation bar.

ATTRIBUTES	TYPE	DESCRIPTION	DEFAULT
`scaleFactor`	`double`	scale factor for the icon scale animation.	0.2
`elevation`	`double`	The z-coordinate of this CustomNavigationBar	8.0
`items`	`List`	item data in CustomNavigationBar	required
`selectedColor`	`Color`	[Color] when [CustomNavigationBarItem] is selected	[blueAccent]
`unSelectedColor`	`Color`	[Color] when [CustomNavigationBarItem] is not selected.	grey[600]
`onTap`	`Function(int)`	callback function when item tapped	null
`currentIndex`	`int`	current index of navigation bar.	0
`iconSize`	`double`	size of icon. also represent the max radius of bubble effect animation.	24.0
`backgroundColor`	`Color`	Background color of [CustomNavigationBar]	Colors.white
`strokeColor`	`Color`	stroke color	blueAccent
`bubbleCurve`	`Curve`	animation curve of bubble effect	linear
`scaleCurve`	`Curve`	animation curve of scale effect	linear
`borderRadius`	`Radius`	border radius of navigation bar	Radius.zero
`isFloating`	`bool`	control if CustomNavigationBar is floating	false

And for customize icon in the navigation bar, just put the icons you want in the CustomNavigationBarItem like this.

CustomNavigationBar(
        ...
        items: [
          CustomNavigationBarItem(
            icon: Icons.home,
          ),
          CustomNavigationBarItem(
            icon: Icons.shopping_cart,
          ),
          CustomNavigationBarItem(
            icon: Icons.lightbulb_outline,
          ),
          CustomNavigationBarItem(
            icon: Icons.search,
          ),
          CustomNavigationBarItem(
            icon: Icons.account_circle,
          ),
        ],
        ...
      )

Attention: If you set isFloating to true, I would recommand you to set extendBody to true in Scaffold for a better performance.

Example

Check example app for more details.

Future Plans

[x] Code format
[x] Make it more like native navigation bar in Flutter.
[x] Better documentation
[ ] More customizations!!

GitHub

What you probably did if you already have a DateField in your Flutter project is to create it from scratch! But did you know that you could use this package to simplify your life a lot?

First, as usual, just add it to your pubspec.yaml file.

dependencies:
   date_field: ^0.1.2
   ...

Now after a little pub get you should be able to access the package content!

Let’s try it

First, let’s just try to display a simple DateField in our view. There are two important parameters:

onDateSelected which is triggered whenever the user picks a date!
selectedDate which will be the date displayed in the field, if it is null, it will display a placeholder.

So a simple implementation would give us the following:

DateTime selectedData;...Widget buid(...) {
...return DateField(
    onDateSelected: (DateTime value) {
      setState(() {
        selectedData = value;
      });
     },
     selectedDate: selectedData,
  );

And the result should look like:

Now that we saw the basis,

let’s go a little bit further…

If you want your user to pick a date within a specified range, you should make use of the firstDate and lastDate parameters.

Example :

DateTime selectedData;...Widget buid(...) {
...return DateField(
    onDateSelected: (DateTime value) {
      setState(() {
        selectedData = value;
      });
     },
     firstDate: DateTime(2020, 3, 8),
     lastDate: DateTime(2020, 3, 20),
     selectedDate: selectedData,
  );

And now when the user picks a date, the dialog will look like that:

and even more further…

Now let’s see how we can customize this DateField, for that we have three interesting parameters:

decoration: which allows us to completely customize the field decoration.
label: which can be used to rename the field.
dateFormat: which can be used to change the way the date is shown.

Long story short, here is an example of how to combine those three parameters:

DateTime selectedData;...Widget buid(...) {
...return DateField(
    onDateSelected: (DateTime value) {
      setState(() {
        selectedData = value;
      });
     },
     decoration: InputDecoration(
       border: OutlineInputBorder()
     ),
     label: 'My date field',
     dateFormat: DateFormat.yMd(),
     selectedDate: selectedData,
  );

And the result is a field in a different style: