BottomNavigation


Source link: https://github.com/gwoodhouse/BottomNavigation

Bottom Navigation

An implementation of the "Bottom Navigation" component from Google Material Design spec.

Please look here to view the full component specification.

This library does not implement the "Left Navigation" as per the Tablet specification.

This library does not implement text/icon tinting as of yet.

Default usage

To be placed as the final View in a CoordinatorLayout:

<ca.gcastle.bottomnavigation.view.BottomNavigationView
  android:id="@+id/bottomBar"
  android:layout_width="match_parent"
  android:layout_height="56dp"
  android:layout_gravity="bottom"
  app:layout_behavior="ca.gcastle.bottomnavigation.behaviour.BottomNavigationBehavior">

<ca.gcastle.bottomnavigation.view.BottomNavigationTabView

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:id="@+id/tab1"

app:tabImage="@drawable/ic_home_white_24dp"

app:tabText="tab1"

app:tabColor="@color/colorPrimary"/>

<ca.gcastle.bottomnavigation.view.BottomNavigationTabView

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:id="@+id/tab2"

app:tabImage="@drawable/ic_search_white_24dp"

app:tabText="tab2"

app:tabColor="@color/colorAccent"/>

<ca.gcastle.bottomnavigation.view.BottomNavigationTabView

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:id="@+id/tab3"

app:tabImage="@drawable/ic_help_white_24dp"

app:tabText="tab3"

app:tabColor="#00BCD4"/>  </ca.gcastle.bottomnavigation.view.BottomNavigationView> 

The above implementation gives the following behaviour:

Optional parameters

BottomNavigationView

[Optional]

app:navGrowTabs="false"

If you don't want the tabs to grow when selected use "false". Either "true" or "false, defaults to true.

app:navGrowthModifier="32dp"

The amount a tab grows when selected. Default value is 64dp. Is ignored if navGrowTabs is set to false.

app:navShowCircleReveal="false"

Decide if you want a circular reveal effect on the background colour, or whether to simply switch colours.

BottomNavigationTabView

Required

app:tabImage="@drawable/icon1"

The drawable to display for this tab

app:tabText="@string/tab1"

The text to display for this tab.

app:tabColor="#0000FF

The colour background for this tab - used by BottonNavigationView in it's circular reveal

[Optional]

app:alwaysShowText="true"

Ensure text is always visible. Defaults to false.

app:unselectedAlpha="0.2"

Customise the opacity of unselected items. Between 0 and 1. Defaults to 0.8

How to use

Maven

<dependency>
<groupId>ca.gcastle</groupId>
<artifactId>BottomNavigation</artifactId>
<version>1.0.0</version>
<type>pom</type> </dependency> 

Gradle

compile 'ca.gcastle:BottomNavigation:1.0.0' 

Ivy

<dependency org='ca.gcastle' name='BottomNavigation' rev='1.0.0'>
<artifact name='$AID' ext='pom'></artifact> </dependency> 

Thanks

Thanks go to:

  • Adam McNeilly for his sample application - View his other contributions to the open source community here: http://adammcneilly.com/100days/
  • Eric Cugota for his documentation on how to publish a library to jcenter which is available here
  • The members of Android/room-15 on StackOverflow for their support critiquing code and offering support.

License

My work is distributed under the Apache License.

Bottom Navigation library for Android Copyright (c) 2016 Graeme Castle (https://github.com/gwoodhouse/BottomNavigation).  Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License. You may obtain a copy of the License at  http://www.apache.org/licenses/LICENSE-2.0  Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. 

This library uses modified source for the Coordinator Layout Behaviour from Nikola Despotoski

BottomNavigationLayout library for Android Copyright (c) 2016. Nikola Despotoski (http://github.com/NikolaDespotoski). Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License. You may obtain a copy of the License at  http://www.apache.org/licenses/LICENSE-2.0  Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. 

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