仿头条界面UI实例（ViewPager + Fragmet）

通过ViewPager和Fragment的组合搭配，可以很好的实现类似于今日头条的UI。并且由于ViewPager的强大属性，Fragment中如果包含ListView，也不会出现滑动冲突。

四个类文件，逐个分析：

MainActivity.java ：主Activity，负责加载主界面，装载Fragment数据，Title数据

ItemFragment.java ：加载单个Fragment界面，并装载ListView的数据

FragmentViewPagerAdapter ：Frgment的适配器

FragmentListAdapter ： ListView的适配器

要点：需要导入一个PagerSlidingTabStrip的库。该库完美的实现了Tab的标签页和标签下的指示标志。

上代码：

activity_main.xml ：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <RelativeLayout
        android:id="@+id/title_bar"
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:background="#FF3030">

        <TextView
            android:id="@+id/title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:text="头条新闻"
            android:textColor="#FFFFFF"
            android:textSize="20sp" />
    </RelativeLayout>

    <com.astuetz.PagerSlidingTabStrip
        android:id="@+id/tab_bar"
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:layout_below="@+id/title_bar"></com.astuetz.PagerSlidingTabStrip>

    <android.support.v4.view.ViewPager
        android:id="@+id/viewPager"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@+id/tab_bar"></android.support.v4.view.ViewPager>
</RelativeLayout>

MainActivity.java ：

package com.example.ubuntu.myapplication;

import android.support.v4.app.Fragment;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

import com.astuetz.PagerSlidingTabStrip;

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


public class MainActivity extends AppCompatActivity {

    ViewPager mViewPager;
    PagerSlidingTabStrip mPagerSlidingTabStrip;
    List<Fragment> mFragmentList;
    List<String> mTitleList;
    String [] titles = null;
    FragmentViewPagerAdapter adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mViewPager = (ViewPager) findViewById(R.id.viewPager);
        mPagerSlidingTabStrip = (PagerSlidingTabStrip) findViewById(R.id.tab_bar);

        mFragmentList = new ArrayList<>();
        mTitleList = new ArrayList<>();
        titles = getResources().getStringArray(R.array.title_bar);
        for (int i = 0; i < titles.length; i ++){
            mTitleList.add(titles[i]);
        }

        for (int i = 1; i <= titles.length; i++){
            Fragment fragment=new ItemFragment();
            Bundle bundle=new Bundle();
            bundle.putInt("arg",i);
            fragment.setArguments(bundle);
            mFragmentList.add(fragment);
        }

        adapter = new FragmentViewPagerAdapter(
                getSupportFragmentManager(),mFragmentList,mTitleList);

        mViewPager.setAdapter(adapter);

        mPagerSlidingTabStrip.setIndicatorColor(getColor(R.color.colorPrimary));
        mPagerSlidingTabStrip.setIndicatorHeight(5);
        mPagerSlidingTabStrip.setAllCaps(true);
        mPagerSlidingTabStrip.setShouldExpand(true);
        mPagerSlidingTabStrip.setTextSize(40);
        mPagerSlidingTabStrip.setTextColor(getColor(R.color.colorPrimaryDark));

        mPagerSlidingTabStrip.setViewPager(mViewPager);
    }
}

ItemFragment.java ：

package com.example.ubuntu.myapplication;

import android.support.v4.app.Fragment;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class ItemFragment extends Fragment {

    String [] newsTitles = null;
    List<Map<String,Object>> list;

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment_content_layout,container,false);
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        ListView listView = (ListView) getView().findViewById(R.id.listView);
        newsTitles = getResources().getStringArray(R.array.news_title);
        list = new ArrayList<>();

        for (int i = 0; i < newsTitles.length; i ++){
            Map<String,Object> map = new HashMap<>();
            map.put("title",newsTitles[i]);
            map.put("image",R.mipmap.ic_launcher);
            list.add(map);
        }

        FragmentListAdapter adapter = new FragmentListAdapter(list,getContext());
        listView.setAdapter(adapter);
    }

}

FragmentListAdapter.java ：

package com.example.ubuntu.myapplication;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import java.util.List;
import java.util.Map;

public class FragmentListAdapter extends BaseAdapter {

    Context context;
    List<Map<String,Object>> data;

    public FragmentListAdapter(List<Map<String,Object>> data,Context context){
        this.data = data;
        this.context = context;
    }

    @Override
    public int getCount() {
        return data.size();
    }

    @Override
    public Object getItem(int position) {
        return data.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder ;
        if (convertView == null){
            convertView = LayoutInflater.from(context).inflate(R.layout.list_item_layout,null);
            holder = new ViewHolder();
            holder.title = (TextView) convertView.findViewById(R.id.title);
            holder.image = (ImageView) convertView.findViewById(R.id.image);
            convertView.setTag(holder);
        }else {
            holder = (ViewHolder) convertView.getTag();
        }

        holder.image.setImageResource((Integer) data.get(position).get("image"));
        holder.title.setText((String) data.get(position).get("title"));
        return convertView;
    }

    class ViewHolder{
        private TextView title;
        private ImageView image;
    }
}

FragmentViewPagerAdapter.java ：

package com.example.ubuntu.myapplication;

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;

import java.util.List;

public class FragmentViewPagerAdapter extends FragmentPagerAdapter {

    private List<Fragment> list;
    private List<String> title;

    public FragmentViewPagerAdapter(FragmentManager fm, List<Fragment> mFragmentList, List<String> mTitleList) {
        super(fm);
        this.list = mFragmentList;
        this.title = mTitleList;
    }


    @Override
    public Fragment getItem(int position) {
        return list.get(position);
    }

    @Override
    public int getCount() {
        return list.size();
    }

    @Override
    public CharSequence getPageTitle(int position) {
        return title.get(position);
    }
}

OK，代码基本贴完，就剩一些res资源文件。可以根据效果图自行完成哦 ！ 好了，收工