我已使用闹钟管理器为事件设置通知。如果我在不同时间设置了多个通知，则最后所有通知也会在最后一次通知时出现。
如果开关关闭，我还想取消特定通知。我已经给出了取消通知的相同意图。但我认为所有通知都被取消了。
我也创建了时间表，并使用时间表的id创建事件。现在，如果我删除一个时间表，我想删除设置为属于已删除时间表的事件的所有通知。
设置闹钟：
public void setNotificationTime(Calendar c)
{
Date dateFrom = new Date();
df = new SimpleDateFormat("E MMM dd HH:mm:ss zzzz yyyy");
try {
dateFrom = df.parse(startTime);
}
catch (ParseException ex) {
}
dateFrom.getTime();
c.setTime(dateFrom);
hour = c.get(Calendar.HOUR_OF_DAY);
minute = c.get(Calendar.MINUTE);
if(notificationTime !=null && !notificationTime.isEmpty()) {
if (notificationTime.equals("10 Minutes Before")) {
FLAG = 1;
c.set(Calendar.HOUR_OF_DAY, hour);
c.set(Calendar.MINUTE, minute - 10);
c.set(Calendar.SECOND, 0);
c.set(Calendar.MILLISECOND, 0);
c.set(Calendar.DATE, day);
// c.set(Calendar.DAY_OF_WEEK,);
SetDay(c);
notification = c.getTime();
notificationTime = df.format(notification);
// setAlarm(c, FLAG);
Intent intent = new Intent(getBaseContext(), NotificationReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(getBaseContext(), RQS_1, intent, 0);
AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
alarmManager.setInexactRepeating(AlarmManager.RTC_WAKEUP, c.getTimeInMillis(), AlarmManager.INTERVAL_DAY * 7, pendingIntent);
Toast.makeText(getApplicationContext(), notificationTime, Toast.LENGTH_SHORT).show();
} else if (notificationTime.equals("30 Minutes Before")) {
FLAG = 2;
c.set(Calendar.HOUR_OF_DAY, hour);
c.set(Calendar.MINUTE, minute - 30);
c.set(Calendar.SECOND, 0);
c.set(Calendar.MILLISECOND, 0);
c.set(Calendar.DATE, day);
// c.set(Calendar.DAY_OF_WEEK,);
SetDay(c);
notification = c.getTime();
notificationTime = df.format(notification);
Intent intent = new Intent(getBaseContext(), NotificationReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(getBaseContext(), RQS_1, intent, 0);
AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
alarmManager.setInexactRepeating(AlarmManager.RTC_WAKEUP, c.getTimeInMillis(), AlarmManager.INTERVAL_DAY * 7, pendingIntent);
Toast.makeText(getApplicationContext(), notificationTime, Toast.LENGTH_SHORT).show();
// setAlarm(c,FLAG);
}
通知接收者
public class NotificationReceiver extends BroadcastReceiver {
public static int MY_NOTIFICATION_ID = 0;
NotificationManager notificationManager;
Notification myNotification;
EventTableHelper db;
@Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, "Time is set", Toast.LENGTH_LONG).show();
db = new EventTableHelper(context);
List<EventData> testSavings = db.getAllEvents();
for (EventData ts : testSavings) {
String log = "from date:" + ts.getFromDate()
+ " ,to date: " + ts.getToDate()
+ " ,location: " + ts.getLocation()
+ " ,title " + ts.getTitle();
Calendar c = Calendar.getInstance();
Date date = new Date();
Date date1 = new Date();
Log.d("Result: ", log);
SimpleDateFormat df = new SimpleDateFormat("E MMM dd hh:mm:ss zzzz yyyy");
SimpleDateFormat df2 = new SimpleDateFormat("hh:mm a");
try {
date = df.parse(ts.getFromDate());
date1 = df.parse(ts.getToDate());
} catch (ParseException ex) {
}
String timeFrom = df2.format(date);
// String startTime = String.valueOf(timeFrom);
String timeTo = df2.format(date1);
// String endTime = String.valueOf(timeTo);
String location = ts.getLocation();
String title = ts.getTitle();
Intent myIntent = new Intent(context, MainActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(
context,
0,
myIntent,
PendingIntent.FLAG_UPDATE_CURRENT);
if(location.equals(""))
{
String msg = "From : " + timeFrom + "\nTo : " + timeTo;
myNotification = new NotificationCompat.Builder(context)
.setContentTitle("Event : " + title)
.setContentText(msg)
.setWhen(System.currentTimeMillis())
.setContentIntent(pendingIntent)
.setAutoCancel(true)
.setSmallIcon(R.drawable.eventicon)
.setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION))
.setStyle(new NotificationCompat.BigTextStyle().bigText(msg))
.setDefaults(Notification.DEFAULT_SOUND)
.build();
}
else
{
String msg = "From : " + timeFrom + "\nTo : " + timeTo + "\nAt : " + location;
myNotification = new NotificationCompat.Builder(context)
.setContentTitle("Event : " + title)
.setContentText(msg)
.setWhen(System.currentTimeMillis())
.setContentIntent(pendingIntent)
.setAutoCancel(true)
.setSmallIcon(R.drawable.eventicon)
.setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION))
.setStyle(new NotificationCompat.BigTextStyle().bigText(msg))
.setDefaults(Notification.DEFAULT_SOUND)
.build();
}
Log.i("Notify", "Notification");
notificationManager =
(NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(MY_NOTIFICATION_ID, myNotification);
myNotification.flags=Notification.FLAG_AUTO_CANCEL;
Intent i = new Intent();
i.putExtra("notificationId",MY_NOTIFICATION_ID);
MY_NOTIFICATION_ID ++;
}
}
}
答案 0 :(得分：1)
每次调用broadcastReceiver时都会重置MY_NOTIFICATION_ID，因此所有通知都具有相同的ID，即0。 我做的是避免它使用：
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT)
{
Intent imageScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
File newestFile = new File("file://"+ Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES)); //you can replace with particular folder here
Uri contentUri = Uri.fromFile(newestFile );
imageScanIntent.setData(contentUri);
mycontext.sendBroadcast(imageScanIntent);
}
else
{
mycontext.sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED, Uri.parse("file://" + Environment.getExternalStorageDirectory()))); //you can replace or add/concat particular folder which you download image into
}
这样每个通知肯定会得到一个不同的身份证号码（百万分之一的可能性会重演）。