Push notification issue in Oreo 8.0

问题

After updating the app to 8.1 the notification was not shown and I fixed it. Now, pending intent is not working as expected.

After receiving the notification, I am not able to navigate to the app if it is in background and if it is closed it is not launching.

private void sendNotify(String messageBody) {
    Intent intent = new Intent();
    intent.setAction(Constants.NOTIFY);
    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

    int uniqueId = (int) System.currentTimeMillis();

    Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);

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

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        // Creates the PendingIntent
        PendingIntent notifyPendingIntent =
                PendingIntent.getActivity(
                        this,
                        0,
                        intent,
                        PendingIntent.FLAG_UPDATE_CURRENT
                );

        String channelID = "com.myapp.ind.push.ServiceListener";// The id of the channel.
        int importance = NotificationManager.IMPORTANCE_HIGH;
        NotificationChannel mChannel = new NotificationChannel(channelID, "MyApp", importance);
        // Create a notification and set the notification channel.
        Notification notification = getNotificationBuilder(messageBody, notifyPendingIntent, defaultSoundUri)
                .setChannelId(channelID)
                .build();

        if (notificationManager != null) {
            notificationManager.createNotificationChannel(mChannel);
            notificationManager.notify(uniqueId, notification);
        }
    } else if (notificationManager != null) {
        PendingIntent pendingIntent = PendingIntent.getBroadcast(this,
            uniqueId /* Request code */,
            intent,
            PendingIntent.FLAG_ONE_SHOT);
        NotificationCompat.Builder notificationBuilder = getNotificationBuilder(messageBody, pendingIntent, defaultSoundUri);
        notificationManager.notify(uniqueId /* ID of notification */,
                notificationBuilder.build());
    }
}

private NotificationCompat.Builder getNotificationBuilder(String messageBody, PendingIntent pendingIntent, Uri defaultSoundUri) {
    return new NotificationCompat.Builder(this)
            .setSmallIcon(android.R.drawable.ic_dialog_info)
            .setContentTitle(getString(R.string.notification_title))
            .setContentText(messageBody)
            .setStyle(new NotificationCompat.BigTextStyle().bigText(messageBody))
            .setAutoCancel(true)
            .setSound(defaultSoundUri)
            .setContentIntent(pendingIntent);
}

Edit:

On click of notification it was working fine till 6.0. After updating to 8.0 it is not working in Google Pixel devices. It is not opening the app or bringing the app to foreground.

回答1:

Create a Receiver class like below. And register that is manifest file.

public class Receiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.getAction() != null
            && intent.getAction().equals("My Call")) {
            Intent startIntent = context.getPackageManager().getLaunchIntentForPackage(context.getPackageName());
            context.startActivity(startIntent);
        }
    }
}

The below code from the Notification class after receiving the notification.

private void sendNotification() {
    Intent intent = new Intent(this, Receiver.class);
    intent.setAction("My Call");
    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

    int uniqueId = (int) System.currentTimeMillis();
    PendingIntent pendingIntent = PendingIntent.getBroadcast(this,
            uniqueId /* Request code */,
            intent,
            PendingIntent.FLAG_ONE_SHOT);

    Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
    NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O && notificationManager != null) {
        String channelID = "Your Channel ID";// The id of the channel.
        int importance = NotificationManager.IMPORTANCE_HIGH;
        NotificationChannel mChannel = new NotificationChannel(channelID, "My_Name", importance);
        // Create a notification and set the notification channel.
        Notification notification = getNotificationBuilder(messageBody, pendingIntent, defaultSoundUri)
                .setChannelId(channelID)
                .build();

        notificationManager.createNotificationChannel(mChannel);
        notificationManager.notify(uniqueId, notification);
    } else if (notificationManager != null) {
        NotificationCompat.Builder notificationBuilder = getNotificationBuilder();
        notificationManager.notify(uniqueId /* ID of notification */,
                notificationBuilder.build());
    }
}

private NotificationCompat.Builder getNotificationBuilder() {
    return new NotificationCompat.Builder(this)
            .setSmallIcon(image)
            .setContentTitle(title)
            .setContentText(message)
            .setStyle(new NotificationCompat.BigTextStyle().bigText(messageBody))
            .setAutoCancel(true)
            .setSound(defaultSoundUri)
            .setContentIntent(pendingIntent);
}

Now I am receiving the notification in all the device. Previously also I received but not displayed in status bar because of Channel implementation in Oreo devices. Now working perfectly.

来源：https://stackoverflow.com/questions/48645550/push-notification-issue-in-oreo-8-0