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Androidで通知をスケジュールする方法

将来的に通知を設定しようとしています。通知を作成するコードはありますが、スケジュールを設定するオプションが見つかりません。

通知をスケジュールするにはどうすればよいですか？

javaandroidnotificationsandroid-notifications
30
OmerN

これにはPendingIntentとBroadCastReceiverを使用する必要があります-

_public void scheduleNotification(Context context, long delay, int notificationId) {//delay is after how much time(in millis) from current time you want to schedule the notification
        NotificationCompat.Builder builder = new NotificationCompat.Builder(context)
                .setContentTitle(context.getString(R.string.title))
                .setContentText(context.getString(R.string.content))
                .setAutoCancel(true)
                .setSmallIcon(R.drawable.app_icon)
                .setLargeIcon(((BitmapDrawable) context.getResources().getDrawable(R.drawable.app_icon)).getBitmap())
                .setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION));

        Intent intent = new Intent(context, YourActivity.class);
        PendingIntent activity = PendingIntent.getActivity(context, notificationId, intent, PendingIntent.FLAG_CANCEL_CURRENT);
        builder.setContentIntent(activity);

        Notification notification = builder.build();

        Intent notificationIntent = new Intent(context, MyNotificationPublisher.class);
        notificationIntent.putExtra(MyNotificationPublisher.NOTIFICATION_ID, notificationId);
        notificationIntent.putExtra(MyNotificationPublisher.NOTIFICATION, notification);
        PendingIntent pendingIntent = PendingIntent.getBroadcast(context, notificationId, notificationIntent, PendingIntent.FLAG_CANCEL_CURRENT);

        long futureInMillis = SystemClock.elapsedRealtime() + delay;
        AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
        alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, futureInMillis, pendingIntent);
    }
_

また、受信者クラスで通知を表示する必要があります-

_public class MyNotificationPublisher extends BroadcastReceiver {

    public static String NOTIFICATION_ID = "notification_id";
    public static String NOTIFICATION = "notification";

    @Override
    public void onReceive(final Context context, Intent intent) {

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

        Notification notification = intent.getParcelableExtra(NOTIFICATION);
        int notificationId = intent.getIntExtra(NOTIFICATION_ID, 0);
        notificationManager.notify(notificationId, notification);
    }
}
_

最後に、適切な引数を使用してscheduleNotification()を呼び出してください。

32
Shadab Ansari

OREO +では使用できません（編集）

上記の答えは良好です-ただし、ユーザーがデバイスを再起動する可能性を考慮しないでください（AlarmManagerによってスケジュールされたPendingIntentをクリアします）。

WakefulBroadcastReceiverを作成する必要があります。これには、PendingIntentの配信をスケジュールするAlarmManagerが含まれます。 WakefulBroadcastReceiverがインテントを処理するとき-通知を投稿し、WakefulBroadcastReceiverに完了を通知します。

WakefulBroadcastReceiver

    /**
     * When the alarm fires, this WakefulBroadcastReceiver receives the broadcast Intent
     * and then posts the notification.
     */
    public class WakefulReceiver extends WakefulBroadcastReceiver {
        // provides access to the system alarm services.
        private AlarmManager mAlarmManager;

        public void onReceive(Context context, Intent intent) {
            //// TODO: post notification
            WakefulReceiver.completeWakefulIntent(intent);
        }

        /**
         * Sets the next alarm to run. When the alarm fires,
         * the app broadcasts an Intent to this WakefulBroadcastReceiver.
         * @param context the context of the app's Activity.
         */
        public void setAlarm(Context context) {
            mAlarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
            Intent intent = new Intent(context, WakefulReceiver.class);
            PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0, intent, 0);

            Calendar calendar = Calendar.getInstance();
            calendar.setTimeInMillis(System.currentTimeMillis());
            //// TODO: use calendar.add(Calendar.SECOND,MINUTE,HOUR, int);
            //calendar.add(Calendar.SECOND, 10);

            //ALWAYS recompute the calendar after using add, set, roll
            Date date = calendar.getTime();

            mAlarmManager.setExact(AlarmManager.RTC_WAKEUP, date.getTime(), alarmIntent);

            // Enable {@code BootReceiver} to automatically restart when the
            // device is rebooted.
            //// TODO: you may need to reference the context by ApplicationActivity.class
            ComponentName receiver = new ComponentName(context, BootReceiver.class);
            PackageManager pm = context.getPackageManager();
            pm.setComponentEnabledSetting(receiver, PackageManager.COMPONENT_ENABLED_STATE_ENABLED,
                    PackageManager.DONT_KILL_APP);
        }

        /**
         * Cancels the next alarm from running. Removes any intents set by this
         * WakefulBroadcastReceiver.
         * @param context the context of the app's Activity
         */
        public void cancelAlarm(Context context) {
            Log.d("WakefulAlarmReceiver", "{cancelAlarm}");

            mAlarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
            Intent intent = new Intent(context, WakefulReceiver.class);
            PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0, intent, 0);

            mAlarmManager.cancel(alarmIntent);

            // Disable {@code BootReceiver} so that it doesn't automatically restart when the device is rebooted.
            //// TODO: you may need to reference the context by ApplicationActivity.class
            ComponentName receiver = new ComponentName(context, BootReceiver.class);
            PackageManager pm = context.getPackageManager();
            pm.setComponentEnabledSetting(receiver, PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
                    PackageManager.DONT_KILL_APP);
        }

BootReceiver

    public class BootReceiver extends BroadcastReceiver {

        @Override
        public void onReceive(Context context, Intent intent) {
            if (intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED)) {
            context = ApplicationActivity.class;
            AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
            Intent intent = new Intent(context, WakefulReceiver.class);
            PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0, intent, 0);

            Calendar calendar = Calendar.getInstance();
            calendar.setTimeInMillis(System.currentTimeMillis());
            //// TODO: use calendar.add(Calendar.SECOND,MINUTE,HOUR, int);
            //calendar.add(Calendar.SECOND, 10);

            //ALWAYS recompute the calendar after using add, set, roll
            Date date = calendar.getTime();

            alarmManager.setExact(AlarmManager.RTC_WAKEUP, date.getTime(), alarmIntent);
            }
        }
    }

AndroidManifest.xml

<receiver Android:name=".WakefulReceiver"/>

<receiver Android:name=".BootReceiver"
    Android:enabled="false">
    <intent-filter>
        <action Android:name="Android.intent.action.BOOT_COMPLETED"/>
    </intent-filter>
</receiver>
37
apelsoczi