Daily Notification even after cancel does not cancel it for next day

I have created a repeating daily notification. Everything works fine but when my checkbox is unchecked it cancel the alarm for that day and fire the notification next day for the same time.What i want is to cancel alarm if my checkbox is unchecked until i will checked it again.

This is my Setting Activity class.Here,I have set the time on clicking the checkbox.And i have called cancelAlarm method when the checkbox is unchecked.

public class SettingActivity extends AppCompatActivity {
public static int hour;
public static int minute;
private boolean check = false;
private int hour_1,minute_1;
static final int TIME_DIALOG_ID = 1111;
final Calendar c = Calendar.getInstance();
DatabaseAdapter MyHelper;
SharedPreferenceManager sharedPreferenceManager;
TextView textView_clearAllData;
Context context;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_setting);
    textView_clearAllData = (TextView) 
    findViewById(R.id.textView_clearAllData);
    MyHelper=new DatabaseAdapter(getApplicationContext());

    context=this;


    sharedPreferenceManager  = new SharedPreferenceManager();

    if( 
      Boolean.valueOf(sharedPreferenceManager.getPreferences
        (SettingActivity.this,"check")))
      {
        CheckBox box = (CheckBox) 
       findViewById(R.id.checkBox_settingClassNotification);
        box.setChecked(true);
    }
    hour_1 = c.get(Calendar.HOUR_OF_DAY);
    minute_1 = c.get(Calendar.MINUTE);




  }

 public void onClick_dailyClassNotification(View view) {
    boolean checked = ((CheckBox) view).isChecked();
    switch (view.getId()) {
        case R.id.checkBox_settingClassNotification:
            if (checked) {
               // ((CheckBox) view).setChecked(false);    //initially 
    checkbox wont be checked
                showDialog(TIME_DIALOG_ID);
            }
            else
            {
                check = false;
                sharedPreferenceManager.setPreferences
           (SettingActivity.this,"check",String.valueOf(check));
                Notification_service.cancelAlarm(context);
                 Toast.makeText(SettingActivity.this, "Notification 
      Cancelled" ,Toast.LENGTH_SHORT).show();

            }
    }
 }

@Override
protected Dialog onCreateDialog(int id) {
    switch (id) {
        case TIME_DIALOG_ID:
            // set time picker as current time
            TimePickerDialog myTime = new TimePickerDialog(this, 
 timePickerListener,
                    hour_1, minute_1, false);
            myTime.setOnCancelListener(new 
 DialogInterface.OnCancelListener(){
                CheckBox checkBox = (CheckBox) 
findViewById(R.id.checkBox_settingClassNotification);
                public void onCancel(DialogInterface dialog) {
                    //Log.d("IN HERE","HERE2");
                    checkBox.setChecked(false);
                    sharedPreferenceManager.setPreferences
        (SettingActivity.this,"check",String.valueOf(check));
                    //checkBox.setText("Use reminders");
                }
            });
            return myTime;
    }
    return null;
}

 private TimePickerDialog.OnTimeSetListener timePickerListener =
        new TimePickerDialog.OnTimeSetListener() {

            @Override
            public void onTimeSet(TimePicker view, int hourOfDay, int 
        minutes) {
                hour = hourOfDay;
                minute = minutes;

                sharedPreferenceManager.setPreferences
        (SettingActivity.this,"hour",Integer.toString(hour));
                sharedPreferenceManager.setPreferences
      (SettingActivity.this,"minute",Integer.toString(minute));

                //Making checkbox checked and svaing in sharedPreference
                CheckBox ch = 
 (CheckBox)findViewById(R.id.checkBox_settingClassNotification);
                ch.setChecked(true);
                check = true;

      sharedPreferenceManager.setPreferences
 (SettingActivity.this,"check",String.valueOf(check));

                createNotify();
                Toast.makeText(SettingActivity.this, "Notification Enabled 
    at " + hour + ":" + minute, Toast.LENGTH_SHORT).show();
            }

        };

public void createNotify() {
    Intent in = new Intent(this,Notification_service.class);
    startService(in);
}

   //clear All Data
 public void clearAllData() {
    long id = MyHelper.clearAllData();
    if(id<0)
        Message.message(getApplicationContext(),"Error");
    else
        Message.message(getApplicationContext(),"All Data Cleared !");
 }
  public void createDeleteDialog(View view){
    final AlertDialog.Builder dialogBuilder = new 
      AlertDialog.Builder(context);
    dialogBuilder.setTitle("Delete All Data ?");


    dialogBuilder.setPositiveButton("Yes", new 
       DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int whichButton) {
            clearAllData();
        }
    });
    dialogBuilder.setNegativeButton("Cancel", new 
     DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int whichButton) {
            dialog.dismiss();
        }
    });
    AlertDialog b = dialogBuilder.create();
    b.show();
  }


   }

This is my Notification service class where i have set daily alarm and cancel it with the same request Id.

   public class Notification_service extends Service {

SharedPreferenceManager sharedPreferenceManager;
private static final String TAG = "MyService";
int hour,minute;
/**
 * The started service starts the AlarmManager.
 */
public static AlarmManager alarmManager;
public static PendingIntent pendingIntent;
@Override
public void onStart(Intent intent, int startid) {
    sharedPreferenceManager = new SharedPreferenceManager();

    hour = Integer.parseInt(sharedPreferenceManager.getPreferences(Notification_service.this,"hour"));
    minute = Integer.parseInt(sharedPreferenceManager.getPreferences(Notification_service.this,"minute"));

    //the hour and minute variables came from setting activity. Use wherever required.
    long _alarm ;
    Calendar now = Calendar.getInstance();
    Calendar c = Calendar.getInstance();
    c.set(Calendar.HOUR_OF_DAY,hour);
    c.set(Calendar.MINUTE,minute);
    c.set(Calendar.SECOND,0);

    if(c.getTimeInMillis() <= now.getTimeInMillis())
       _alarm = c.getTimeInMillis() + (24*60*60*1000);
     else
        _alarm = c.getTimeInMillis();

    Intent i = new Intent(this, Notification_Receiver.class);
    i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

    /*PendingIntent*/ pendingIntent=PendingIntent.getBroadcast(getApplicationContext(),100,i,PendingIntent.FLAG_UPDATE_CURRENT);
    /*AlarmManager*/ alarmManager=(AlarmManager) getSystemService(ALARM_SERVICE);
    alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,_alarm,AlarmManager.INTERVAL_DAY,pendingIntent);

    // Toast.makeText(this, "Service started", Toast.LENGTH_LONG).show();
    // Log.d(TAG, "onStart");
}

//cancel alarm
public static void cancelAlarm(Context context) {

    /*if(alarmManager != null)
        alarmManager.cancel(pendingIntent);*/
    Intent i = new Intent(context, Notification_Receiver.class);

     pendingIntent=PendingIntent.getBroadcast(context,100,i,PendingIntent.FLAG_UPDATE_CURRENT);
     alarmManager=(AlarmManager) context.getSystemService(ALARM_SERVICE);
    alarmManager.cancel(pendingIntent);
}

@Override
public IBinder onBind(Intent intent) {
    return null;
}

@Override
public void onDestroy() {
    //Toast.makeText(this, "My Service stopped", Toast.LENGTH_LONG).show();
    // Log.d(TAG, "onDestroy");
}

}

This is my Notification Receiver class where i have set the Notification.

 public class Notification_Receiver extends BroadcastReceiver {
private Uri soundURI =
        Uri.parse("android.resource://com.example.homedemo/"
                + R.raw.gets_in_the_way);
private long[] mVibratePattern = { 0, 200, 200, 300 };
/*String[] day = {
        "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};*/
@Override
public void onReceive(Context context, Intent intent) {

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

    /*Calendar calendar = Calendar.getInstance();
    int d = calendar.get(Calendar.DAY_OF_WEEK);
    Log.d("day = ",Integer.toString(d));
    */
    Intent repeating_intent=new Intent(context,HomeActivity.class);
    /*Intent repeating_intent = new Intent(context,RoutineOfTheDayActivity.class);
    String day_str = day[d];
    repeating_intent.putExtra("day",day_str);
    */
    repeating_intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    PendingIntent pendingIntent=PendingIntent.
            getActivity(context,100,repeating_intent,PendingIntent.FLAG_UPDATE_CURRENT);
    NotificationCompat.Builder builder= (NotificationCompat.Builder) new NotificationCompat.Builder(context)
            .setContentIntent(pendingIntent)
            .setContentTitle("Your today's classes").setContentText("Touch here to see schedule")
            .setAutoCancel(true).setSmallIcon(android.R.drawable.arrow_up_float)
            .setSound(soundURI)
            .setVibrate(mVibratePattern);
    notificationManager.notify(100,builder.build());

}

}