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sephiroth74/Material-BottomNavigation: Bottom Navigation widget component inspir ...

原作者: [db:作者] 来自: 网络 收藏 邀请

开源软件名称（OpenSource Name）：

sephiroth74/Material-BottomNavigation

开源软件地址(OpenSource Url)：

https://github.com/sephiroth74/Material-BottomNavigation

开源编程语言(OpenSource Language)：

Kotlin 58.0%

开源软件介绍(OpenSource Introduction)：

Material Bottom Navigation Library

Android Arsenal Build Status
Maven Central

Lightweight Bottom Navigation library component inspired by the Google Material Design Guidelines at https://www.google.com/design/spec/components/bottom-navigation.html

This project is also inspired by https://github.com/roughike/BottomBar


Table of contents

Installation

In your project's build.gradle file add the following line to the dependencies group:

compile 'it.sephiroth.android.library.bottomnavigation:bottom-navigation:3.0.0'

Usage

Usage of the BottomNavigation widget is very easy. Just place it in your layout.xml like this:

<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout android:id="@+id/CoordinatorLayout01"
	xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
	android:layout_height="match_parent"
    android:fitsSystemWindows="true">

	...your content...

    <it.sephiroth.android.library.bottomnavigation.BottomNavigation
	    android:id="@+id/BottomNavigation"
        android:layout_width="match_parent"
	    android:layout_height="wrap_content"
        android:layout_gravity="bottom"
	    app:bbn_entries="@menu/bottombar_menu_4items"
        app:bbn_scrollEnabled="true"
        app:bbn_badgeProvider="@string/bbn_badgeProvider"
	    app:layout_behavior="@string/bbn_phone_view_behavior" />
</androidx.coordinatorlayout.widget.CoordinatorLayout>

All the menu main configurations are defined within the xml menu resource itself. Here's an example of a menu with 4 items:

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
	xmlns:app="http://schemas.android.com/apk/res-auto"
    android:background="@android:color/black"
    app:bbn_badgeColor="#FFFF0000"
	app:bbn_rippleColor="#33ffffff">
    <item
	    android:id="@+id/bbn_item1"
    	android:color="@color/colorPrimary"
        android:icon="@drawable/ic_cloud_off_white_24dp"
	    android:title="Cloud Sync" />
    <item
	    android:id="@+id/bbn_item2"
        android:color="@android:color/holo_green_dark"
	    android:icon="@drawable/ic_cast_connected_white_24dp"
        android:title="Chromecast" />
	<item
        android:id="@+id/bbn_item3"
	    android:color="@android:color/holo_orange_dark"
        android:icon="@drawable/ic_mail_white_24dp"
	    android:title="Mail" />
    <item
	    android:id="@+id/action4"
    	android:color="#FF5252"
        android:icon="@drawable/ic_format_list_numbered_white_24dp"
	    android:title="List" />
</menu>

Examples

4 shifting items menu 3 fixed items menu
Video 1 Video 2
4 items no background Tablet mode
4 items without changing background.
Menu show/hide feature is also disabled		 Menu can be easily setup for (left or right) tablet support.
Video 3 Tablet Mode

Sizing

Dimensions and paddings follow the Google giudelines
Sizing

Tablets

The View supports tablet mode too (Left or Right). In order to enable tablet mode this is the configuration that should be used:

<it.sephiroth.android.library.bottomnavigation.BottomNavigation
    android:id="@+id/BottomNavigation"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="start"
    app:bbn_entries="@menu/bottombar_menu_3items"
    app:bbn_badgeProvider="@string/bbn_badgeProvider"
    app:layout_behavior="@string/bbn_tablet_view_behavior" />

Styling

The xml menu supports the following attributes in the <menu> tag:

<declare-styleable name="BottomNavigationMenu">
    <!-- menu default background color -->
    <attr name="android:background" />
    
    <!-- default badge color -->
    <attr name="bbn_badgeColor" format="color" />

    <!-- animation duration for the menu items -->
    <attr name="bbn_itemAnimationDuration" format="integer" />

    <!-- ripple selector color -->
    <attr name="bbn_rippleColor" format="color" />

    <!-- menu item active color -->
    <attr name="bbn_itemColorActive" format="color" />

    <!-- menu item inactive color -->
    <attr name="bbn_itemColorInactive" format="color" />

    <!-- menu item disabled color -->
    <attr name="bbn_itemColorDisabled" format="color" />

    <!-- force fixed behavior and always display item labels -->
    <!-- default implementation is false and the labels are -->
    <!-- shown only if there are less than 4 items in the menu -->
    <attr name="bbn_alwaysShowLabels" format="boolean" />
</declare-styleable>

Note: By default when there are 4 or 5 elements, only the selected item will display the label. In order to force all the items to always show their label, use bbn_alwaysShowLabels in the menu xml.

Badges

Badges

There's a basic support for badges using the default implementation. In order to display a badge in the current BottomNavigation view, all you have to do is:

    final BadgeProvider provider = bottomNavigationView.getBadgeProvider();
    provider.show(R.id.bbn_item3);

This code will show a little circle badge on the menu item with the id "bbn_item3".
You can define the default badge color inside the menu xml itself:

<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    app:bbn_badgeColor="#FFFF0000">
    
    <item
        android:id="@+id/bbn_item1"
        android:color="@color/colorPrimary"
        android:icon="@drawable/ic_cloud_off_white_24dp"
        android:title="Cloud Sync" />
        
    ...
</menu>

Then you can hide the badge using:

    bottomNavigation.getBadgeProvider().remove(R.id.bbn_item3);

Badges Customization

You can use your own Drawable by extending the BadgeProvider class. Once you've setup your new class you can tell the BottomNavigation view to use your class by specifying it in the "bbn_badgeProvider" attribute of your xml file.
For instance:

<it.sephiroth.android.library.bottomnavigation.BottomNavigation
    android:id="@id/BottomNavigation"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_gravity="bottom"
    app:bbn_badgeProvider="my.custom.BadgeProviderCustom"
    app:bbn_entries="@menu/bottombar_menu_4items"
    app:layout_behavior="@string/bbn_phone_view_behavior" />

This will make your my.custom.BadgeProviderCustom the default BadgeProvider.

License

The MIT License (MIT)

Copyright (c) 2016 Alessandro Crugnola

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.

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