Android BottomNavigationBar底部导航控制器的使用

末蓝、 2022-07-27 14:37 187阅读 0赞

转载请标明出处:[http://blog.csdn.net/u010046908/article/details/50962081][http_blog.csdn.net_u010046908_article_details_50962081]本文出自:【李东的博客】

最近Google在自己推出的Material design中增加了Bottom Navigation导航控制。Android一直没有官方的导航控制器，自己实现确实是五花八门，有了这个规定之后，就类似苹果的底部Toolbar，以后我们的APP就会有一致的风格，先看一张效果：

![这里写图片描述][1458286306136380.png]

这是官方在Material design中给出一张图，确实很不错。

# 1.BottomNavigationBar的下载地址 #

[https://github.com/Ashok-Varma/BottomNavigation][https_github.com_Ashok-Varma_BottomNavigation]

# 2.使用的方法 #

## 2.1在Gradle中添加 ##

compile ‘com.ashokvarma.android:bottom-navigation-bar:0.9.5’

## 2.2布局实现 ##

<com.ashokvarma.bottomnavigation.BottomNavigationBar
            android:layout_gravity="bottom"
            android:id="@+id/bottom_navigation_bar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"/>

## 2.3类中Activity中添加BottomNavigationItem ##

BottomNavigationBar bottomNavigationBar = (BottomNavigationBar) findViewById(R.id.bottom_navigation_bar);
    
    bottomNavigationBar
                    .addItem(new BottomNavigationItem(R.drawable.ic_home_white_24dp, "Home"))
                    .addItem(new BottomNavigationItem(R.drawable.ic_book_white_24dp, "Books"))
                    .addItem(new BottomNavigationItem(R.drawable.ic_music_note_white_24dp, "Music"))
                    .addItem(new BottomNavigationItem(R.drawable.ic_tv_white_24dp, "Movies & TV"))
                    .addItem(new BottomNavigationItem(R.drawable.ic_videogame_asset_white_24dp, "Games"))
                    .initialise();

## 2.4设置事件监听器TabChangeListener ##

bottomNavigationBar.setTabSelectedListener(new BottomNavigationBar.OnTabSelectedListener(){
                @Override
                public void onTabSelected(int position) {
                }
                @Override
                public void onTabUnselected(int position) {]
                }
                @Override
                public void onTabReselected(int position) {
                }
            });

# 3.案例的实现 #

布局文件

<?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="match_parent" app:layout_behavior="@string/appbar_scrolling_view_behavior" tools:showIn="@layout/activity_navigation_view_demo" tools:context="com.lidong.demo.navigation_view.BottomNavigationBarDemoActivity">
    
        <LinearLayout android:id="@+id/tb" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" />
        <com.ashokvarma.bottomnavigation.BottomNavigationBar android:id="@+id/bottom_navigation_bar" android:layout_width="match_parent" android:layout_alignParentBottom="true" android:layout_height="wrap_content"/>
    </RelativeLayout>

Activity的代码：

package com.lidong.demo.navigation_view;
    
    import android.app.FragmentManager;
    import android.app.FragmentTransaction;
    import android.os.Bundle;
    import android.support.v7.app.AppCompatActivity;
    import android.support.v7.widget.Toolbar;
    import android.util.Log;
    
    import com.ashokvarma.bottomnavigation.BottomNavigationBar;
    import com.ashokvarma.bottomnavigation.BottomNavigationItem;
    import com.lidong.demo.R;
    
    /** * BottomNavigationBar实现 */
    public class BottomNavigationBarDemoActivity extends AppCompatActivity implements BottomNavigationBar.OnTabSelectedListener { 
    
        private BottomNavigationBar bottomNavigationBar;
        int lastSelectedPosition = 0;
        private String TAG = BottomNavigationBarDemoActivity.class.getSimpleName();
        private LocationFragment mLocationFragment;
        private FindFragment mFindFragment;
        private FavoritesFragment mFavoritesFragment;
        private BookFragment mBookFragment;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_navigation_view_demo);
            Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
            setSupportActionBar(toolbar);
            bottomNavigationBar = (BottomNavigationBar) findViewById(R.id.bottom_navigation_bar);
    
            bottomNavigationBar
                    .addItem(new BottomNavigationItem(R.mipmap.ic_location_on_white_24dp, "位置").setActiveColor(R.color.orange))
                    .addItem(new BottomNavigationItem(R.mipmap.ic_find_replace_white_24dp, "发现").setActiveColor(R.color.blue))
                    .addItem(new BottomNavigationItem(R.mipmap.ic_favorite_white_24dp, "爱好").setActiveColor(R.color.green))
                    .addItem(new BottomNavigationItem(R.mipmap.ic_book_white_24dp, "图书").setActiveColor(R.color.blue))
                    .setFirstSelectedPosition(lastSelectedPosition )
                    .initialise();
    
            bottomNavigationBar.setTabSelectedListener(this);
            setDefaultFragment();
        }
    
        /** * 设置默认的 */
        private void setDefaultFragment() {
            FragmentManager fm = getFragmentManager();
            FragmentTransaction transaction = fm.beginTransaction();
            mLocationFragment = LocationFragment.newInstance("位置");
            transaction.replace(R.id.tabs, mLocationFragment);
            transaction.commit();
        }
    
        @Override
        public void onTabSelected(int position) {
            Log.d(TAG, "onTabSelected() called with: " + "position = [" + position + "]");
            FragmentManager fm = this.getFragmentManager();
            //开启事务
            FragmentTransaction transaction = fm.beginTransaction();
            switch (position) {
                case 0:
                    if (mLocationFragment == null) {
                        mLocationFragment = LocationFragment.newInstance("位置");
                    }
                    transaction.replace(R.id.tb, mLocationFragment);
                    break;
                case 1:
                    if (mFindFragment == null) {
                        mFindFragment = FindFragment.newInstance("发现");
                    }
                    transaction.replace(R.id.tb, mFindFragment);
                    break;
                case 2:
                    if (mFavoritesFragment == null) {
                        mFavoritesFragment = FavoritesFragment.newInstance("爱好");
                    }
                    transaction.replace(R.id.tb, mFavoritesFragment);
                    break;
                case 3:
                    if (mBookFragment == null) {
                        mBookFragment = BookFragment.newInstance("图书");
                    }
                    transaction.replace(R.id.tb, mBookFragment);
                    break;
                default:
                    break;
            }
            // 事务提交
            transaction.commit();
        }
    
        @Override
        public void onTabUnselected(int position) {
            Log.d(TAG, "onTabUnselected() called with: " + "position = [" + position + "]");
        }
    
        @Override
        public void onTabReselected(int position) {
    
        }
    }

fragment的代码

package com.lidong.demo.navigation_view;
    
    import android.app.Fragment;
    import android.os.Bundle;
    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.ViewGroup;
    import android.widget.TextView;
    
    import com.lidong.demo.R;
    
    public class LocationFragment extends Fragment { 
    
    
        public static LocationFragment newInstance(String param1) {
            LocationFragment fragment = new LocationFragment();
            Bundle args = new Bundle();
            args.putString("agrs1", param1);
            fragment.setArguments(args);
            return fragment;
        }
    
        public LocationFragment() {
    
        }
    
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
        }
    
        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                                 Bundle savedInstanceState) {
            View view = inflater.inflate(R.layout.fragment_location, container, false);
            Bundle bundle = getArguments();
            String agrs1 = bundle.getString("agrs1");
            TextView tv = (TextView)view.findViewById(R.id.tv_location);
            tv.setText(agrs1);
            return view;
        }
    
    
    
    }

代码实现起来很简单，就加载布局，添加BottomNavigationItem，设置TabChangeListener就这三步搞定底部导航控制器。

[代码下载地址][Link 1]

效果实现：  
![这里写图片描述][20160323115759760] ![这里写图片描述][20160323115734260]

[http_blog.csdn.net_u010046908_article_details_50962081]: http://blog.csdn.net/u010046908/article/details/50962081
[1458286306136380.png]: /images/20220727/ed37a289224748678a68ee8d1c6d1db1.png
[https_github.com_Ashok-Varma_BottomNavigation]: https://github.com/Ashok-Varma/BottomNavigation
[Link 1]: https://github.com/lidong1665/AndroidRapidLibrary
[20160323115759760]: https://img-blog.csdn.net/20160323115759760
[20160323115734260]: /images/20220727/6599599b1abc4c41a44c8945e1510693.png