为什么我的通知无法在Android 7以上版本上使用？

Question

我需要有关通知的帮助。这不适用于Android> 7。我每天早上10点使用广播接收器重复我的通知我希望我的通知可以在Android最低19到最高29的水平上运行。可能吗 ？有什么帮助吗？

接收者：

public class AlarmReceiverNewUser extends BroadcastReceiver {

    public void onReceive(Context context, Intent intent) {
        String userName = App.SP().getString(App.SHARED_PREFERENCES_USER_NAME, "");
        final String textes[] = {context.getResources().getString(R.string.textNotification1), context.getResources().getString(R.string.textNotification2),
                context.getResources().getString(R.string.textNotification3), context.getResources().getString(R.string.textNotification4),
                context.getResources().getString(R.string.textNotification5), context.getResources().getString(R.string.textNotification6),
                context.getResources().getString(R.string.textNotification7)};
        int idx = new Random().nextInt(textes.length);

        NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
        Intent intent1 = new Intent(context, FreeCalmBreathActivity.class);
        intent1.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

        Uri alarmSound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        PendingIntent pendingIntentSecond = PendingIntent.getActivity(context, 42, intent1, PendingIntent.FLAG_UPDATE_CURRENT);

        NotificationCompat.Builder builder = new NotificationCompat.Builder(context). //Enlever issou si ça bug
                setSmallIcon(R.drawable.ic_logo).
                setContentIntent(pendingIntentSecond).
                setContentText(userName + (textes[idx])).setStyle(new NotificationCompat.BigTextStyle()
                .bigText(userName + (textes[idx]))).
                addAction(R.drawable.ic_check_black_24dp, App.getContext().getResources().getString(R.string.Access), pendingIntentSecond).
                setContentTitle(App.getContext().getResources().getString(R.string.app_name)).
                setSound(alarmSound).
                setNumber(7).
                setChannelId(String.valueOf(42)).
                setAutoCancel(true);
        notificationManager.notify(42, builder.build());
        setNotification(context, 42);
    }

    private void setNotification(Context context, int id) {
        Calendar calender = Calendar.getInstance();
        calender.set(Calendar.HOUR_OF_DAY, 10);
        calender.set(Calendar.MINUTE, 0);
        calender.set(Calendar.SECOND, 0);

        Intent intent = new Intent(context, AlarmReceiverNewUser.class);
        intent.putExtra("NotificationId", id);
        PendingIntent pendingIntent = PendingIntent.getBroadcast(context, id, intent, PendingIntent.FLAG_UPDATE_CURRENT);
        AlarmManager alarmManager = (AlarmManager) context.getSystemService(ALARM_SERVICE);
        alarmManager.setExact(AlarmManager.RTC_WAKEUP, calender.getTimeInMillis() +
                AlarmManager.INTERVAL_DAY, pendingIntent);
    }
}

Answer 1

您需要使用Notification Builder创建频道以在Android O中发送通知

NotificationManager mNotificationManager =(NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
 mNotificationManager.createNotificationChannel(mChannel);

或者您可以通过检查android版本发送通知

NotificationManager mNotificationManager =
            (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
       mNotificationManager.createNotificationChannel(mChannel);
    }

或者您也可以设置频道ID

NotificationChannel mChannel = new NotificationChannel(CHANNEL_ID, Name, Importance);
// Create a notification and set the notification channel.
Notification notification = new Notification.Builder(MainActivity.this)
            .setContentTitle("")
            .setContentText("")
            .setChannelId(CHANNEL_ID)
            .build();

有关更多详细信息，您可以检查Official Android Doc

Answer 2

您需要创建通知频道才能在N +中查看通知