ExpandableBottomBar

Additional

Language
Kotlin
Version
1.4.0 (Apr 3, 2021)
Created
Mar 2, 2019
Updated
Jun 6, 2021
Owner
Alexander Dadukin (st235)
Contributors
Lucas Teixeira (lucastsantos)
Alexander Dadukin (st235)
Arif Rahman Hakim (newarifrh)
Cruz (BoredOutOfMyGit)
4
Activity
Badge
Generate
Download
Source code
APK file

Blurb

ExpandableBottomBar

A new way to improve navigation in your app

Its really easy integrate to your project

take it, faster, faster

Important: library was migrated from JCenter to MavenCentral

It means that it may be necessary to add mavenCentral repository to your repositories list

allprojects {
    repositories {
        // your repositories

        mavenCentral()
    }
}
  • Maven
<dependency>
  <groupId>com.github.st235</groupId>
  <artifactId>expandablebottombar</artifactId>
  <version>X.X</version>
  <type>pom</type>
</dependency>
  • Gradle
implementation 'com.github.st235:expandablebottombar:X.X'
  • Ivy
<dependency org='com.github.st235' name='expandablebottombar' rev='X.X'>
  <artifact name='expandablebottombar' ext='pom' ></artifact>
</dependency>

P.S.: Check out latest version code in badge at the top of this page.

Usage

Really simple as I wrote earlier

Firstly, you should declare your view in xml file

    <github.com.st235.lib_expandablebottombar.ExpandableBottomBar
        android:id="@+id/expandable_bottom_bar"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_margin="20dp"
        app:exb_backgroundCornerRadius="25dp"
        app:exb_backgroundColor="#2e2e2e"
        app:exb_itemInactiveColor="#fff"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent" />

Then you should add menu items to your navigation menu To access menu call bottomBar.menu on your navigation view

        val bottomBar: ExpandableBottomBar = findViewById(R.id.expandable_bottom_bar)
        val menu = bottomBar.menu

        menu.add(
            MenuItemDescriptor.Builder(
                this,
                R.id.icon_home,
                R.drawable.ic_home,
                R.string.text, 
                Color.GRAY
            )
                .build()
        )

        bottomBar.onItemSelectedListener = { view, menuItem ->
            /**
             * handle menu item clicks here,
             * but clicks on already selected item will not affect this callback
             */
        }
        
        bottomBar.onItemReselectedListener = { view, menuItem ->
            /**
             * handle here all the click in already selected items
             */
        }

Xml menu declaration

If your menu is constantly, you may specify it from xml

Firstly, you should declare menu items in xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:id="@+id/home"
        android:title="@string/text"
        android:icon="@drawable/ic_home"
        app:exb_color="#FF8888" />

    <item
        android:id="@+id/settings"
        android:title="@string/text4"
        android:icon="@drawable/ic_settings"
        app:exb_color="@color/colorSettings" />

    <item
        android:id="@+id/bookmarks"
        android:title="@string/text3"
        android:icon="@drawable/ic_bookmarks"
        app:exb_color="#fa2" />
</menu>

each item tag has following attributes:

property type description
id reference an id of menu item
exb_color reference/color color of element, it may be color reference or color
icon reference icon reference (vector drawables supported)
title reference/text item title
exb_badgeColor color notification badge background color. It will override the color from layout attribute
exb_badgeTextColor color notification badge text color. It will override the color from layout attribute

Just like any Android menu 😉

Then you should reference this xml file at the view attributes

    <github.com.st235.lib_expandablebottombar.ExpandableBottomBar
        android:id="@+id/expandable_bottom_bar"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_margin="20dp"
        app:exb_backgroundCornerRadius="25dp"
        app:exb_itemInactiveColor="#fff"
        app:exb_items="@menu/bottom_bar"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent" />

Xml attributes

property type description
exb_elevation dimen component elevation (important: api 21+)
exb_backgroundColor color bottom bar background color
exb_transitionDuration integer time between one item collapsed and another item expanded
exb_backgroundCornerRadius dimen bottom bar background corners radius
exb_itemInactiveColor color item menu color, when its inactive
exb_itemBackgroundCornerRadius dimen item background corner radius
exb_itemStyle enum: normal, outline, stroke controls the style of items. normal = items are filled with solid color; outline = no fill, only border; stroke = fill + border
exb_itemBackgroundOpacity float item background opacity (important: final color alpha calculates by next formulae alpha = opacity * 255)
exb_item_vertical_margin dimen top & bottom item margins
exb_item_horizontal_margin dimen left & right item margins
exb_item_vertical_padding dimen top & bottom item padding
exb_item_horizontal_padding dimen left & right item padding
exb_items reference xml supported menu format
exb_notificationBadgeBackgroundColor color notification badge background color. Will be applied to all menu items
exb_notificationBadgeTextColor color notification badge text color. Will be applied to all menu items

Notification badges

    /**
     * Returns notification object
     */
    val menu = bottomBar.menu
    val notification = menu.findItemById(i.itemId).notification() // itemId is R.id.action_id

   notification.show() // shows simple dot-notification
   notification.show("string literal") // shows notification with counter. Counter could not exceed the 4 symbols length

  notification.clear() // removes notification badge from menu item

Navigation Components support

Usually Drawer or BottomNavigationView attached to navigation controller with NavigationUI.setupWithNavController(view, navController), but this system is not applicable to customview components. That's why ExpandableBottomBar offers it's own ExpandableBottomBarNavigationUI

To attach ExpandableBottomBar to your navigation components you should use the same approach

    ExpandableBottomBarNavigationUI.setupWithNavController(bottomNavigation, navigationController)

Coordinator Layout support

Do you waiting for Coordinator Layout support - and it is already here! Fabs and Snackbars aligned by bottom bar! Hooray 🎉

Available without registration and SMS, starting from 0.8 version. Seriously, everything is already working out of the box - nothing needs to be done.

But... if you need to support hiding the menu by list/grid scroll - then you are really lucky!

This functionality is very simple to implement. You need to redeclare custom Coordinator Layout Behavoir to ExpandableBottomBarScrollableBehavior.

    <github.com.st235.lib_expandablebottombar.ExpandableBottomBar
            android:id="@+id/expandable_bottom_bar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="bottom"
            app:layout_behavior="github.com.st235.lib_expandablebottombar.behavior.ExpandableBottomBarScrollableBehavior"
            app:items="@menu/bottom_bar" />

Really easy ;D

After integration this behavior should looks like:

Migration guide

You may found all necessary info about migration from old versions here

Screens

License

MIT License

Copyright (c) 2019 - present, Alexander Dadukin

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.