ListView能將數據內容透過adapter按照順序顯示出來的列表
若數據量太多倒是無法在螢幕全部顯示時，ListView會變成可滑動式

拉一個ListView元件

<?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">

    <ListView
        android:id="@+id/ListView"
        android:layout_width="match_parent"
        android:layout_height="200dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.0" />

</androidx.constraintlayout.widget.ConstraintLayout>

一開始先宣告與綁定我們ListView元件

ListView listView;
listView = findViewById(R.id.ListView);

接著創建一陣列來存放要顯示的內容

String[] str = {"水星", "金星", "地球", "火星", "木星", "土星", "天王星", "海王星"};

最後就是建立一個Adapter讓內容顯示出來
創建Adapter需要給予3個參數
1. context(ListView所在的Activity)
2. ListView列表欄的樣式，也可以自己設計(這裡我選擇系統提供的)
3. 要顯示的內容、數據

ArrayAdapter<String> adapter = new ArrayAdapter<String>
                                (MainActivity.this
                                ,android.R.layout.simple_list_item_1
                                ,str);

這些都放入後就成功創建完一個Adapter
然後把Adapter放入ListView就大功告成

listView.setAdapter(adapter);

點擊事件監聽 OnItemClickListener

裡面的position表示ListView列表得位置，大小會依照內容從0開始算

listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int position, long l) {
                Toast.makeText(MainActivity.this, str[position], Toast.LENGTH_SHORT);
            }
        });

完整程式碼

package com.example.listview_demo;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ListView listView;
        listView = findViewById(R.id.ListView);
        String[] str = {"水星", "金星", "地球", "火星", "木星", "土星", "天王星", "海王星"};
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(MainActivity.this,android.R.layout.simple_list_item_1,str);
        listView.setAdapter(adapter);

        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int position, long l) {
                Toast.makeText(MainActivity.this, str[i], Toast.LENGTH_SHORT).show();
            }
        });
    }
}