TabLayout的滑动

（布局）

//先要把依赖写入

implementation 'com.android.support:design:27.1.1'

//布局可用线性布局就行

<android.support.design.widget.TabLayout
    android:id="@+id/tab_layout"
    android:background="@color/colorPrimary"
    android:layout_width="match_parent"
    app:tabMode="scrollable"
    android:layout_height="0dp"
    android:layout_weight="1">
</android.support.design.widget.TabLayout>
<android.support.v4.view.ViewPager
    android:id="@+id/vp"
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight="9">
</android.support.v4.view.ViewPager>

（Activity中）

// 创建标题集合
    channelBeanList = new ArrayList<>();
    //以键值对形式写入数据
    channelBeanList.add(new ChannelBean("Android", "https://gank.io/api/data/Android"));
    channelBeanList.add(new ChannelBean("iOS", "https://gank.io/api/data/iOS"));
    channelBeanList.add(new ChannelBean("all", "https://gank.io/api/data/all"));
    //设置适配器
    vp.setAdapter(new ChannelAdapter(getSupportFragmentManager()));
    tab_layout.setupWithViewPager(vp);
}
//设置内部类
private class ChannelAdapter extends FragmentPagerAdapter {
    public ChannelAdapter(FragmentManager fm) {
        super(fm);
    }
    @Override
    public Fragment getItem(int position) {
        return ChannelFragment.newInstance(channelBeanList.get(position).url);
    }
    @Override
    public int getCount() {
        return channelBeanList.size();
    }
    @Nullable
    @Override
    public CharSequence getPageTitle(int position) {
        return channelBeanList.get(position).title;
    }
}

（需要将viewpager实例到tablayout上）

//创建一个fragment包

//创建实例
public static Fragment newInstance(String url){
    ChannelFragment fragment = new ChannelFragment();
    Bundle ar = new Bundle();
    ar.putString("url",url);
    fragment.setArguments(ar);
    return fragment;
}