设置AlarmManager时会发送通知

Question

所以我遇到了这个问题，每当我设置一个警报时它就会发送通知，即使时间不匹配。我正在使用这个类来设置闹钟并取消闹钟。

package com.example.home.quoteapp.notification;

import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;

import com.example.home.quoteapp.readers.NotificationsReader;

import java.util.Calendar;

public class AlarmActivater {
private final Context context;

public AlarmActivater(Context context) {
    this.context = context;
}

public void setAlarm() {
    cancelAlarm();
    if (!NotificationsReader.getNotifications().isEmpty()) {
        SharedPreferences prefs = context.getSharedPreferences("time", Context.MODE_PRIVATE);
        Calendar calendar = Calendar.getInstance();
        calendar.set(Calendar.HOUR_OF_DAY, prefs.getInt("hour", 1));
        calendar.set(Calendar.MINUTE, prefs.getInt("minute", 01));
        calendar.set(Calendar.SECOND, 0);
        PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, new Intent(context, AlarmReceiver.class), PendingIntent.FLAG_UPDATE_CURRENT);
        AlarmManager am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
        am.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), AlarmManager.INTERVAL_DAY, pendingIntent);
    }
}

private boolean isActive() {
    return (PendingIntent.getBroadcast(context, 0,
            new Intent(context, AlarmReceiver.class),
            PendingIntent.FLAG_NO_CREATE) != null);
}

private void cancelAlarm() {
    if (!NotificationsReader.getNotifications().isEmpty() && isActive()) {
        AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
        Intent myIntent = new Intent(context, AlarmReceiver.class);
        PendingIntent pendingIntent = PendingIntent.getBroadcast(
                context, 0, myIntent,
                PendingIntent.FLAG_UPDATE_CURRENT);
        alarmManager.cancel(pendingIntent);
    }
}
}

我在启动应用程序时调用setAlarm方法，并在时间选择器中更改时间。 prefs.getInt ...东西是正确的我已经测试过了。