Fragment2

package com.example.week;

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;

/**
 * Created by 生哥 on 2017/12/2.
 */

public class Fragment4 extends Fragment {
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment4,container,false);
        return view;
    }
}

Fragment2

原文：http://www.cnblogs.com/wangwensheng/p/7966972.html