MainFragment

package com.bawei.wss.jinritotiao;import android.os.Bundle;import android.support.annotation.Nullable;import android.support.design.widget.TabLayout;import android.support.v4.app.Fragment;import android.support.v4.app.FragmentManager;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;/** * author:Created by WangZhiQiang on 2017/10/24. */public class MainFragment extends Fragment {        private TabLayout tabLayout;        private ViewPager viewpager;        ArrayList fragmentList = new ArrayList<Fragment>();        String[] temp = {"关注","推荐","十九大","热点","科技","视频","数码"};        @Nullable        @Override        public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {            View view = inflater.inflate(R.layout.fragment_a, null);            tabLayout = (TabLayout) view.findViewById(R.id.tl_titles);            viewpager = (ViewPager) view.findViewById(R.id.viewpager);            return view;        }        @Override        public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {            super.onViewCreated(view, savedInstanceState);            // fragment中嵌套fragment, Manager需要用(getChildFragmentManager())            MPagerAdapter mPagerAdapter = new MPagerAdapter(getChildFragmentManager());            initFragment();            tabLayout.setTabMode(TabLayout.MODE_FIXED);            tabLayout.setupWithViewPager(viewpager);            viewpager.setAdapter(mPagerAdapter);        }        private void initFragment() {        for (int i = 0; i < 7; i++) {            fragmentList.add(new ChildFragment());        }    }    class MPagerAdapter extends FragmentPagerAdapter {        public MPagerAdapter(FragmentManager fm) {            super(fm);        }        @Override        public Fragment getItem(int position) {            return (Fragment) fragmentList.get(position);        }        @Override        public int getCount() {            return fragmentList.size();        }        @Override        public Object instantiateItem(ViewGroup container, int position) {            return super.instantiateItem(container, position);        }        //返回tablayout的标题文字;        @Override        public CharSequence getPageTitle(int position) {            return temp[position];        }    }}