我正在创建的应用程序具有最后一个功能。我制作的应用程序是一个日历，它可以保存事件并在时间到达时通知用户。我遇到的问题是，当我创建多个通知（或多个事件）时，它只通知创建的最新消息。我尝试为通知制作不同的 ID，但没有成功。这里是我修改的代码。这是我看过的一个教程。
报警任务.java
public class AlarmTask implements Runnable{
// The date selected for the alarm
private final Calendar date;
// The android system alarm manager
private final AlarmManager am;
// Your context to retrieve the alarm manager from
private final Context context;
private final long alarmID;
public AlarmTask(Context context, Calendar date, long id) {
this.context = context;
this.am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
this.date = date;
this.alarmID = id;
}
@Override
public void run() {
// Request to start are service when the alarm date is upon us
// We don't start an activity as we just want to pop up a notification into the system bar not a full activity
Intent intent = new Intent(context, NotifyService.class);
intent.putExtra(NotifyService.INTENT_NOTIFY, true);
intent.putExtra("alarmID", alarmID);
PendingIntent pendingIntent = PendingIntent.getService(context, 0, intent, 0);
// Sets an alarm - note this alarm will be lost if the phone is turned off and on again
am.set(AlarmManager.RTC, date.getTimeInMillis(), pendingIntent);
}
}
通知服务.java
public class NotifyService extends Service {
/**
* Class for clients to access
*/
public class ServiceBinder extends Binder {
NotifyService getService() {
return NotifyService.this;
}
}
// Unique id to identify the notification.
private static final int NOTIFICATION = 143;
// Name of an intent extra we can use to identify if this service was started to create a notification
public static final String INTENT_NOTIFY = "com.gpplsmje.mac.calendar.utils.INTENT_NOTIFY";
// The system notification manager
private NotificationManager mNM;
@Override
public void onCreate() {
Log.i("NotifyService", "onCreate()");
mNM = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.i("LocalService", "Received start id " + startId + ": " + intent);
// If this service was started by out AlarmTask intent then we want to show our notification
if(intent.getBooleanExtra(INTENT_NOTIFY, false)){
showNotification(intent.getLongExtra("alarmID", 0));
}
// We don't care if this service is stopped as we have already delivered our notification
return START_NOT_STICKY;
}
@Override
public IBinder onBind(Intent intent) {
return mBinder;
}
// This is the object that receives interactions from clients
private final IBinder mBinder = new ServiceBinder();
/**
* Creates a notification and shows it in the OS drag-down status bar
*/
@SuppressWarnings("deprecation")
private void showNotification(long alarmID) {
SaveEvent event = new SaveEvent(this);
event.open();
Log.d("Notification: ID", alarmID + "");
// This is the 'title' of the notification
CharSequence title = event.getEventName(alarmID);
// This is the icon to use on the notification
int icon = R.drawable.icon_reminder;
// This is the scrolling text of the notification
CharSequence text = event.getEventDesc(alarmID);
// What time to show on the notification
long time = System.currentTimeMillis();
event.close();
Intent backToEventDetail = new Intent(this, CalendarEventDetail.class);
PendingIntent contentIntent = PendingIntent.getActivity(this, 0, backToEventDetail, 0);
Notification notify = new Notification.Builder(this)
.setContentTitle(title)
.setContentText(text)
.setSmallIcon(icon)
.setContentIntent(contentIntent).getNotification();
notify.defaults = Notification.DEFAULT_SOUND;
notify.flags = Notification.FLAG_AUTO_CANCEL;
// Send the notification to the system.
mNM.notify(Integer.parseInt(String.valueOf(alarmID)), notify);
// Stop the service when we are finished
stopSelf();
}
}
根据我对代码的理解，AlarmTask.java 接收警报日期并将其设置为在该日期通知。我传递的 ID 是我保存在手机数据库中的事件 ID。但我无法让它添加多个通知。它只接收我保存的最新信息。我希望它获取所有事件并为每个事件设置通知。有人可以帮我吗？