如何在android中创建按键点击开始特定时间间隔的重复通知和点击停止通知

import android.app.AlarmManager;
import android.app.Notification;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.Build;
import android.os.SystemClock;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {

    private Button startButton;
    private Button stopButton;
    private NotificationManager notificationManager;
    private static final int NOTIFICATION_ID = 1;
    private static final String CHANNEL_ID = "channel_id";
    private static final String CHANNEL_NAME = "channel_name";

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

        startButton = findViewById(R.id.startButton);
        stopButton = findViewById(R.id.stopButton);

        // 创建通知渠道
        createNotificationChannel();

        notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

        startButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // 设置通知点击事件的Intent
                Intent notificationIntent = new Intent(MainActivity.this, MainActivity.class);
                PendingIntent pendingIntent = PendingIntent.getActivity(MainActivity.this, 0, notificationIntent, 0);

                // 创建通知
                Notification notification = new Notification.Builder(MainActivity.this, CHANNEL_ID)
                        .setContentTitle("重复通知")
                        .setContentText("点击了开始按钮")
                        .setSmallIcon(R.mipmap.ic_launcher)
                        .setContentIntent(pendingIntent)
                        .build();

                // 设置定时任务
                AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
                long intervalMillis = 1000 * 60 * 60; // 1小时
                long triggerAtMillis = SystemClock.elapsedRealtime() + intervalMillis;
                alarmManager.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP, triggerAtMillis, intervalMillis, pendingIntent);

                // 发送通知
                notificationManager.notify(NOTIFICATION_ID, notification);
            }
        });

        stopButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // 取消定时任务
                Intent notificationIntent = new Intent(MainActivity.this, MainActivity.class);
                PendingIntent pendingIntent = PendingIntent.getActivity(MainActivity.this, 0, notificationIntent, 0);
                AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
                alarmManager.cancel(pendingIntent);

                // 取消通知
                notificationManager.cancel(NOTIFICATION_ID);
            }
        });
    }

    private void createNotificationChannel() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            NotificationChannel channel = new NotificationChannel(CHANNEL_ID, CHANNEL_NAME, NotificationManager.IMPORTANCE_DEFAULT);
            notificationManager.createNotificationChannel(channel);
        }
    }

    public static class NotificationReceiver extends BroadcastReceiver {

        @Override
        public void onReceive(Context context, Intent intent) {
            // 接收到通知的广播消息
        }
    }
}