Android(安卓)BottomNavigationBar 底部导航栏

ViewPager实现

compile 'com.ashokvarma.android:bottom-navigation-bar:2.0.4'//底部导航栏

<?xml version="1.0" encoding="utf-8"?>

package jiyun_zhoukao_demo1.com.myapplication.activity;import android.os.Bundle;import android.support.v4.app.Fragment;import android.support.v4.content.ContextCompat;import android.support.v4.view.ViewPager;import android.support.v7.app.AppCompatActivity;import com.ashokvarma.bottomnavigation.BottomNavigationBar;import com.ashokvarma.bottomnavigation.BottomNavigationItem;import java.util.ArrayList;import java.util.List;import butterknife.BindView;import butterknife.ButterKnife;import jiyun_zhoukao_demo1.com.myapplication.R;import jiyun_zhoukao_demo1.com.myapplication.adapter.SectionsPagerAdapter;import jiyun_zhoukao_demo1.com.myapplication.fragment.BlankFragment;import jiyun_zhoukao_demo1.com.myapplication.fragment.BlankFragment2;import jiyun_zhoukao_demo1.com.myapplication.fragment.BlankFragment3;import jiyun_zhoukao_demo1.com.myapplication.fragment.BlankFragment4;import jiyun_zhoukao_demo1.com.myapplication.fragment.BlankFragment5;public class MainActivity extends AppCompatActivity implements BottomNavigationBar.OnTabSelectedListener, ViewPager.OnPageChangeListener {    @BindView(R.id.view_pager)    ViewPager viewPager;    @BindView(R.id.bottom_navigation_bar)    BottomNavigationBar bottomNavigationBar;    private List fragments;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        ButterKnife.bind(this);        initData();        initView();    }    private void initView() {        initViewPager();    }    private void initViewPager() {        fragments = new ArrayList();        fragments.add(new BlankFragment());        fragments.add(new BlankFragment2());        fragments.add(new BlankFragment3());        fragments.add(new BlankFragment4());        fragments.add(new BlankFragment5());        viewPager.setAdapter(new SectionsPagerAdapter(getSupportFragmentManager(), fragments));        viewPager.addOnPageChangeListener(this);        viewPager.setCurrentItem(0);    }    private void initData() {        bottomNavigationBar.setTabSelectedListener(this);        bottomNavigationBar.setMode(BottomNavigationBar.MODE_FIXED);        bottomNavigationBar.setBackgroundStyle(BottomNavigationBar.BACKGROUND_STYLE_STATIC);        bottomNavigationBar                .addItem(new BottomNavigationItem(R.drawable.shouye1, null).setInactiveIcon(ContextCompat.getDrawable(this, R.drawable.shouye2)))//非选中的图片)                .addItem(new BottomNavigationItem(R.drawable.fenglei1, null).setInactiveIcon(ContextCompat.getDrawable(this, R.drawable.fenglei2)))                .addItem(new BottomNavigationItem(R.drawable.vip_sy, null).setInactiveIcon(ContextCompat.getDrawable(this, R.drawable.vip_sy)))                .addItem(new BottomNavigationItem(R.drawable.kebiao1, null).setInactiveIcon(ContextCompat.getDrawable(this, R.drawable.kebiao2)))                .addItem(new BottomNavigationItem(R.drawable.mine_ch, null).setInactiveIcon(ContextCompat.getDrawable(this, R.drawable.mine_no)))                .setFirstSelectedPosition(0)           /*     .setActiveColor("#EA5FFE")//#F6F0F0白色                .setInActiveColor("#F6F0F0")//则色*/                .setBarBackgroundColor("#F6F0F0")//#FD8822//黄色                .initialise();    }    @Override    public void onTabSelected(int position) {        //  点击Item时调用此方法        viewPager.setCurrentItem(position);    }    @Override    public void onTabUnselected(int position) {        //  对没有选中的Item进行处理的方法,    }    @Override    public void onTabReselected(int position) {        // 当被选中的Item 再一次被点击时调用此方法    }    @Override    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {    }    @Override    public void onPageSelected(int position) {        bottomNavigationBar.selectTab(position);    }    @Override    public void onPageScrollStateChanged(int state) {    }}

package jiyun_zhoukao_demo1.com.myapplication.adapter;import android.support.v4.app.Fragment;import android.support.v4.app.FragmentManager;import android.support.v4.app.FragmentPagerAdapter;import java.util.List;/** * Created by Lenovo on 2018/7/10. * * @ClassName:SectionsPagerAdapter */public class SectionsPagerAdapter extends FragmentPagerAdapter{    List fragments;    public SectionsPagerAdapter(FragmentManager fm, List fragments) {        super(fm);        this.fragments = fragments;    }    @Override    public Fragment getItem(int position) {        return fragments.get(position);    }    @Override    public int getCount() {        return fragments.size();    }}

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