如果应用程序未运行，奥利奥中的通知将不起作用

Question

我正在尝试在我的应用中显示通知。一切似乎都很好，但在 Android 8.0 Oreo 中，如果我终止应用程序，则不会显示通知。在以前的 Android 版本中，这不是问题。

我的源代码是下一个。

public class NotificationHelper extends ContextWrapper {

private static final int NOTIFICATION_ID = 600;
private static final String NOTIFICATION_CHANNEL_ID = "bmedio_v6";         // This is the Notification Channel ID. More about this in the next section
private static final String NOTIFICATION_CHANNEL_NAME = "medio";             //User visible Channel Name
private static final String NOTIFICATION_CHANNEL_DESC = "Medio Channel";             //User visible Channel Name

public NotificationHelper(Context base) {
    super(base);
}

public void showNotification(String title, String message) {

    NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    NotificationCompat.Builder notificationBuilder;

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        NotificationChannel notificationChannel = new NotificationChannel(NOTIFICATION_CHANNEL_ID, NOTIFICATION_CHANNEL_NAME, NotificationManager.IMPORTANCE_HIGH);

        // Configure the notification channel.
        notificationChannel.setDescription(NOTIFICATION_CHANNEL_DESC);
        notificationChannel.enableLights(true);
        notificationChannel.setLightColor(Color.BLUE);
        notificationChannel.setVibrationPattern(new long[]{0, 1000, 500, 1000});
        notificationChannel.enableVibration(true);
        notificationManager.createNotificationChannel(notificationChannel);

        notificationBuilder = new NotificationCompat.Builder(this, NOTIFICATION_CHANNEL_ID);
    }else{
        notificationBuilder = new NotificationCompat.Builder(this);
    }

    notificationBuilder.setAutoCancel(true)
            .setDefaults(Notification.DEFAULT_ALL)
            .setWhen(System.currentTimeMillis())
            .setSmallIcon(R.drawable.ic_icon_notify)
            //     .setPriority(Notification.PRIORITY_MAX)
            .setContentTitle(title)
            .setContentText(message);

    notificationManager.notify(NOTIFICATION_ID, notificationBuilder.build());

}

}

Answer 1

使用 'com.google.android.gms:play-services-gcm' 9.6.0 或更高版本的库可以解决问题。我使用的是 GCM，而不是 FCM。

Answer 2

我也遇到了同样的问题，然后我找到了解决方案，您需要从电池优化列表中删除您的应用程序标记您的应用程序未优化，我在onePlus5，在杀死一个应用程序后，通知也起作用了。

步骤：

1. 转到设置
2. 点击电池选项
3. 点击电池优化，会显示正在优化的应用列表。
4. 找到您的应用选择不优化并完成！

现在我发现了，所以现在我需要看看如何使用代码来做到这一点。 同时让我知道您是否遇到同样的问题，否则它将解决您的问题。 ：

Answer 3

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

        PendingIntent resultPendingIntent = PendingIntent.getActivity(this, 0, resultIntent, PendingIntent.FLAG_CANCEL_CURRENT);

        NotificationCompat.InboxStyle inboxStyle = new NotificationCompat.InboxStyle();

        inboxStyle.addLine(message);

        NotificationManager mNotificationManager = (NotificationManager) getApplicationContext().getSystemService(Context.NOTIFICATION_SERVICE);

        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
            NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(getApplicationContext(),"channel_01")
                    .setSmallIcon(R.mipmap.ic_launcher)
                    .setContentText(message)
                    .setContentIntent(resultPendingIntent)
                    .setAutoCancel(true)
                    .setPriority(Notification.PRIORITY_HIGH)
                    .setChannelId("channel_01")
                    .setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION))
                    .setStyle(inboxStyle)
                    .setContentTitle(Title);

            mNotificationManager.notify(Notification_ID, mBuilder.build());

            NotificationChannel channel = new NotificationChannel(Notification_ID, "Playback Notification", NotificationManager.IMPORTANCE_HIGH);
            channel.enableLights(true);
            channel.enableVibration(true);
            channel.setVibrationPattern(new long[]{100, 200, 300, 400, 500, 400, 300, 200, 400});
            assert mNotificationManager != null;
            mBuilder.setChannelId("channel_01");
            mNotificationManager.createNotificationChannel(channel);

        }else {
            NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(getApplicationContext(),Notification_ID)
                    .setSmallIcon(R.mipmap.ic_launcher)
                    .setContentTitle(Title)
                    .setContentIntent(resultPendingIntent)
                    .setContentText(message)
                    .setStyle(inboxStyle)
                    .setSound(soundUri)
                    .setAutoCancel(true);
            mNotificationManager.notify(Notification_ID, mBuilder.build());
        }

Answer 4

需要在您的手机中启用自动启动

我们无法直接启用 AutoStart。我们应该导航到那个屏幕

try {
    Intent intent = new Intent();
    String manufacturer = android.os.Build.MANUFACTURER;
    if ("xiaomi".equalsIgnoreCase(manufacturer)) {
        intent.setComponent(new ComponentName("com.miui.securitycenter", "com.miui.permcenter.autostart.AutoStartManagementActivity"));
    } else if ("oppo".equalsIgnoreCase(manufacturer)) {
        intent.setComponent(new ComponentName("com.coloros.safecenter", "com.coloros.safecenter.permission.startup.StartupAppListActivity"));
    } else if ("vivo".equalsIgnoreCase(manufacturer)) {
        intent.setComponent(new ComponentName("com.vivo.permissionmanager", "com.vivo.permissionmanager.activity.BgStartUpManagerActivity"));
    }

    List<ResolveInfo> list = context.getPackageManager().queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
    if  (list.size() > 0) {
        context.startActivity(intent);
    } 
} catch (Exception e) {
    Crashlytics.logException(e);
}