我的ListView不起作用，它不在主页上显示listView。有解决方案吗？

它也与我的布局文件有关吗？我也会在下面附加布局文件！

我试图为列表视图制作适配器

这只是一个简单的一页应用程序，我尝试学习如何使用listview。我对代码做错了吗？我主要是在关注youtube教程，但是仍然发生错误

Mainactivity.java

package com.example.myapplication;

import android.content.res.Resources;
import android.os.Bundle;

import com.google.android.material.floatingactionbutton.FloatingactionButton;
import com.google.android.material.snackbar.snackbar;

import androidx.appcompat.app.AppCompatactivity;
import androidx.appcompat.widget.Toolbar;

import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class Mainactivity extends AppCompatactivity {

    Toolbar toolbar;
    FloatingactionButton fab;
    ListView myListView;
    String [] items;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        toolbar = findViewById(R.id.toolbar);
        setSupportactionBar(toolbar);

        Resources res = getResources();
        myListView = (ListView) findViewById(R.id.myListView);
        items = res.getStringArray(R.array.items);

        ItemAdapter itemAdapter = new ItemAdapter(this,items);
        myListView.setadapter(itemAdapter);

      //  myListView.setadapter(new ArrayAdapter<String>(this,R.layout.));

        fab = findViewById(R.id.fab);
        fab.setOnClicklistener(new View.OnClicklistener() {
            @Override
            public void onClick(View view) {
                snackbar.make(view,"Replace with your own action",snackbar.LENGTH_LONG)
                        .setaction("action",null).show();
            }
        });


    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main,menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button,so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

ItemAdapter.java

package com.example.myapplication;

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

//A class that are BaseAdapter but with another name call 'ItemAdapter'

//To pass values/data to ListView

public class ItemAdapter extends BaseAdapter {

    LayoutInflater mInflater;
    String[] items;

    public ItemAdapter(Context c,String[] i){
        items = i;
        mInflater = (LayoutInflater) c.getSystemService(Context.LAYOUT_INflaTER_SERVICE);     //To initialize inflater
    }

    @Override
    public int getcount() {
        return items.length;
    }

    @Override
    public Object getItem(int i) {
        return items[i];
    }

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

    @Override
    public View getView(int i,View convertView,ViewGroup parent) {

        View v = mInflater.inflate(R.layout.my_listview_details,null);
        TextView nameTextView = (TextView) v.findViewById(R.id.nameTextView);

        String name = items[i];

        nameTextView.setText(name);

        return v;
    }
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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">


    <androidx.appcompat.widget.Toolbar

        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        android:background="?attr/colorPrimary"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:popuptheme="@style/Apptheme.PopupOverlay"
        app:title="Your library"
        app:titleTextColor="#fff" />


    <include
        android:id="@+id/include"
        layout="@layout/content_main"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent" />


    <com.google.android.material.floatingactionbutton.FloatingactionButton
        android:id="@+id/fab"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="24dp"
        android:layout_marginBottom="24dp"
        android:clickable="true"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="1.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="1.0"
        app:srcCompat="@drawable/round_add_white_24" />

</androidx.constraintlayout.widget.ConstraintLayout>

content_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    android:layout_marginTop="?attr/actionBarSize"
    tools:context=".Mainactivity"
    tools:showIn="@layout/activity_main">

    <ListView
        android:id="@+id/myListView"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="1.0" />

</androidx.constraintlayout.widget.ConstraintLayout>

my_listview_details.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">

    <TextView
        android:id="@+id/nameTextView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentStart="true"
        android:layout_alignParentTop="true"
        android:layout_marginStart="24dp"
        android:layout_marginTop="24dp"
        android:text="TextView" />
</RelativeLayout>

有解决方案吗？