Fragment嵌套Fragment

main xml界面

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity"
    android:orientation="vertical">
    <android.support.v4.view.ViewPager
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/viewpager"
        android:layout_weight="9"
        />
    <android.support.design.widget.TabLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/tablayout"
        android:layout_weight="1"
        android:layout_gravity="center_horizontal"
        />
</LinearLayout>

main java界面

package com.example.lenovo.myprojecttwo;

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

import com.example.lenovo.myprojecttwo.Adapter.MypagerAdapter;
import com.example.lenovo.myprojecttwo.fragment.fragment_01;
import com.example.lenovo.myprojecttwo.fragment.fragment_02;
import com.example.lenovo.myprojecttwo.fragment.fragment_03;
import com.example.lenovo.myprojecttwo.fragment.fragment_04;
import com.example.lenovo.myprojecttwo.fragment.fragment_05;

import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {
    private ViewPager viewPager;
    private TabLayout tabLayout;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        viewPager=findViewById(R.id.viewpager);
        tabLayout=findViewById(R.id.tablayout);
        ArrayList<Fragment> list=new ArrayList<>();
        list.add(new fragment_01());
        list.add(new fragment_02());
        list.add(new fragment_03());
        list.add(new fragment_04());
        list.add(new fragment_05());
        MypagerAdapter mypagerAdapter=new MypagerAdapter(getSupportFragmentManager(),list);
        viewPager.setAdapter(mypagerAdapter);
        tabLayout.addTab(tabLayout.newTab());
        tabLayout.addTab(tabLayout.newTab());
        tabLayout.addTab(tabLayout.newTab());
        tabLayout.addTab(tabLayout.newTab());
        tabLayout.addTab(tabLayout.newTab());

        tabLayout.setupWithViewPager(viewPager);

        tabLayout.getTabAt(0).setText("首页");
        tabLayout.getTabAt(1).setText("电影");
        tabLayout.getTabAt(2).setText("影院");
        tabLayout.getTabAt(3).setText("演出");
        tabLayout.getTabAt(4).setText("我的");
    }
}

fragment中的两个fragment xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">
    <SearchView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/searchview"
        android:layout_weight="1">
    </SearchView>
    <android.support.design.widget.TabLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/tab"
        />
    <android.support.v4.view.ViewPager
        android:layout_weight="14"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/viewpager2"
        />
</LinearLayout>

里面两个fragment的代码

package com.example.lenovo.myprojecttwo.fragment;

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.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.example.lenovo.myprojecttwo.Adapter.MymovieAdapter;
import com.example.lenovo.myprojecttwo.R;

import java.util.ArrayList;

public class fragment_02 extends Fragment{
    private ViewPager viewPager2;
    private TabLayout tab;
    public fragment_02() {
        // Required empty public constructor
    }
    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view=inflater.inflate(R.layout.item_02,container,false);
        viewPager2=view.findViewById(R.id.viewpager2);
        tab=view.findViewById(R.id.tab);
        ArrayList<Fragment> list=new ArrayList<>();
        list.add(new fragment_one());
        list.add(new fragment_two());
        MymovieAdapter mymovieAdapter=new MymovieAdapter(getFragmentManager(),list);
        viewPager2.setAdapter(mymovieAdapter);

        tab.addTab(tab.newTab());
        tab.addTab(tab.newTab());
        tab.setupWithViewPager(viewPager2);
        tab.getTabAt(0).setText("正在热播");
        tab.getTabAt(1).setText("激情预告");
        return view;
    }
}