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我试图显示由我创建的通知,而不是FireBase。它用的是旧手机,不是Oreo

android-8.0-oreo firebase-cloud-messaging notifications firebase android

rosu alin · 技术社区 · 6 年前

这是尝试创建通知的代码:

NotificationManager notifManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
notifManager.cancelAll();

PSTrip activeTrip = getActiveTrip();

Intent intent = new Intent(context, PSNewJourneyActivity.class);
intent.putExtra("id", activeTrip.getId());
intent.putExtra("userid", activeTrip.getOwner().getId() + "");
intent.putExtra("mode", "active");
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK);

playCheckoutSound(context, false);

int iUniqueId = (int) (System.currentTimeMillis() & 0xfffffff);
PendingIntent pIntent = PendingIntent.getActivity(context, iUniqueId, intent, PendingIntent.FLAG_UPDATE_CURRENT);

NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context, "general");
mBuilder.setContentTitle(context.getString(R.string.passenger_name)).setContentText(context.getString(R.string.pit, "name")).setSmallIcon(R.drawable.notification_icon);
mBuilder.setContentIntent(pIntent);

Notification notification = mBuilder.build();
notification.flags |= Notification.FLAG_AUTO_CANCEL;

NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(iUniqueId, notification);

如您所见,我选择了通道ID,并为通知选择了唯一的ID,但仍然没有运气。我在这里做错什么了? 我也试过在lopper.getmainlopper中调用这个,不知道它会影响它,但仍然没有运气。

PS:我的应用有一个前台服务,所以它有一个永久的通知,让用户知道我的应用在后台工作。这就是导致问题的原因吗?

编辑:

我以前添加过这个。通知,在答案中找到:

 if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
                    NotificationChannel notificationChannel = notificationManager.getNotificationChannel(channelId);
                    if (notificationChannel == null) {
                        int importance = NotificationManager.IMPORTANCE_HIGH;
                        notificationChannel = new NotificationChannel(channelId, channelDescription, importance);
                        notificationChannel.setLightColor(Color.GREEN);
                        notificationChannel.enableVibration(true);
                        notificationManager.createNotificationChannel(notificationChannel);
                    }
                }

我的手机会振动,但仍不显示通知。

SDK版本:

 compileSdkVersion 27
buildToolsVersion '27.0.3'
defaultConfig {
    minSdkVersion 17
    targetSdkVersion 27
}

电话:华为Mate 10 Pro。安卓8.0

logcat向我提出了这个问题:

05-22 12:34:32.916: E/NotificationService(1184): No Channel found for pkg=nl.hgrams.passenger, channelId=general, id=124397682, tag=null, opPkg=nl.hgrams.passenger, callingUid=10233, userId=0, incomingUserId=0, notificationUid=10233, notification=Notification(channel=general pri=0 contentView=null vibrate=null sound=null defaults=0x0 flags=0x10 color=0x00000000 vis=PRIVATE)

1 回复 | 直到 6 年前

Mike 6 年前

如果你的应用以Android 8.0为目标,那么你必须指定一个通知通道。

NotificationChannel notificationChannel = new NotificationChannel(CHANNEL_ONE_ID,
    CHANNEL_ONE_NAME, 
    notifManager.IMPORTANCE_HIGH);
notificationChannel.enableLights(true);
notificationChannel.setLightColor(Color.RED);
notificationChannel.setShowBadge(true);
notificationChannel.setLockscreenVisibility(Notification.VISIBILITY_PUBLIC);
getManager().createNotificationChannel(notificationChannel);

检查此链接以创建频道。

https://www.androidauthority.com/android-8-0-oreo-app-implementing-notification-channels-801097/