在Fragment里面写TabLayout横向滑动

最新推荐文章于 2021-03-12 09:52:33 发布

原创最新推荐文章于 2021-03-12 09:52:33 发布 · 248 阅读

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本文介绍了一个基于Android的应用组件——新闻频道Fragment的实现方法。该Fragment使用ViewPager和TabLayout展示多个新闻频道，每个频道对应一个单独的Fragment，通过动态加载不同频道的数据实现内容更新。文章详细展示了如何设置ViewPager和TabLayout，以及如何为每个频道配置对应的URL。



import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.design.widget.TabLayout;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import java.util.ArrayList;
import java.util.List;




public class ChannelFragment extends Fragment {

    private TabLayout tb_news;
    private List<String> titles;
    private List<Fragment> fragmentList;
    private List<String> urls;
    private ViewPager vp;

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View v =  inflater.inflate(R.layout.item_channel,container,false);
        vp = v.findViewById(R.id.vp);
        tb_news = v.findViewById(R.id.tl_title);
        return v;
    }

    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);

        titles = new ArrayList<>();
        titles.add("全部");
        titles.add("国内");
        titles.add("国际");
        titles.add("科技");
        titles.add("股市");
        titles.add("美股");
        titles.add("财经");
        titles.add("社会");
        titles.add("体育");
        titles.add("娱乐");
        titles.add("军事");
        fragmentList = new ArrayList<>();
        urls = new ArrayList<>();
        urls.add("https://feed.mix.sina.com.cn/api/roll/get?pageid=153&lid=2509&k=&num=20&page=");
        urls.add("https://feed.mix.sina.com.cn/api/roll/get?pageid=153&lid=2510&k=&num=20&page=");
        urls.add("https://feed.mix.sina.com.cn/api/roll/get?pageid=153&lid=2511&k=&num=20&page=");
        urls.add("https://feed.mix.sina.com.cn/api/roll/get?pageid=153&lid=2515&k=&num=20&page=");
        urls.add("https://feed.mix.sina.com.cn/api/roll/get?pageid=153&lid=2517&k=&num=20&page=");
        urls.add("https://feed.mix.sina.com.cn/api/roll/get?pageid=153&lid=2518&k=&num=20&page=");
        urls.add("https://feed.mix.sina.com.cn/api/roll/get?pageid=153&lid=2516&k=&num=20&page=");
        urls.add("https://feed.mix.sina.com.cn/api/roll/get?pageid=153&lid=2669&k=&num=20&page=");
        urls.add("https://feed.mix.sina.com.cn/api/roll/get?pageid=153&lid=2512&k=&num=20&page=");
        urls.add("https://feed.mix.sina.com.cn/api/roll/get?pageid=153&lid=2513&k=&num=20&page=");
        urls.add("https://feed.mix.sina.com.cn/api/roll/get?pageid=153&lid=2514&k=&num=20&page=");

        for (int i = 0; i <urls.size() ; i++) {
            NewsFragment newsFragment = new NewsFragment();
            Bundle bundle = new Bundle();
            bundle.putString("urls",urls.get(i));
            newsFragment.setArguments(bundle);
            fragmentList.add(newsFragment);
        }
        tb_news.setTabMode(TabLayout.MODE_SCROLLABLE);
        FragmentPagerAdapter adapter = new FragmentPagerAdapter(getChildFragmentManager()) {
            @Override
            public Fragment getItem(int position) {
                return fragmentList.get(position);
            }

            @Override
            public int getCount() {
                return fragmentList.size();
            }
            @Nullable
            @Override
            public CharSequence getPageTitle(int position) {
                return titles.get(position);
            }
        };
        vp.setAdapter(adapter);
        tb_news.setupWithViewPager(vp);

    }
}