应用程序图标徽章未显示Android

Question

对于一项作业，我必须编写一个应用程序，该程序可以显示所有联系人及其生日（并创建/修改）。到目前为止，一切都很好。然后，我必须向所有今天出生的人发出通知。

启动通知没有问题，但是我没有获得应用程序图标徽章。

搜索后，我发现必须使用频道->完成。

我已在设置中验证是否启用了通知点：

我已经验证了android文档，说“您无须理会是自动的”

我的模拟器正在使用比android oreo更大的Android 9.0。

那怎么了？

public class BirthdayListener implements View.OnClickListener {
    private static final String CHANNEL_ID = "ch.hefr.tic.birthday_channel";
    private static final int SUMMARY_ID = -1;
    private static final String GROUP_KEY = "ch.hefr.tic.group_channel";

    private Context context;
    private NotificationManager notificationManager;

    public BirthdayListener(Context context) {
        this.context = context;

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            CharSequence name = context.getResources().getString(R.string.channel_name);
            String description = context.getResources().getString(R.string.channel_description);
            int importance = NotificationManager.IMPORTANCE_DEFAULT;
            NotificationChannel channel = new NotificationChannel(CHANNEL_ID, name, importance);
            channel.setDescription(description);
            channel.setShowBadge(true);
            notificationManager = context.getSystemService(NotificationManager.class);
            notificationManager.createNotificationChannel(channel);
        }
    }

    @Override
    public void onClick(View v) {
        List<Contact> hasBirthday = searchBirthdays();

        NotificationManagerCompat notificationManagerCompat = NotificationManagerCompat.from(context);

        NotificationCompat.InboxStyle summaryStyle = new NotificationCompat.InboxStyle();
        summaryStyle.setBigContentTitle(hasBirthday.size() + " new messages");

        for(int i = 0; i < hasBirthday.size(); ++i) {
            Contact contact = hasBirthday.get(i);

            NotificationCompat.Builder builder = new NotificationCompat.Builder(context, CHANNEL_ID)
                    .setSmallIcon(R.mipmap.ic_notification)
                    .setContentTitle("Birthday")
                    .setContentText(contact.getName() + " has his birthday today !")
                    .setPriority(NotificationCompat.PRIORITY_DEFAULT)
                    .setGroup(GROUP_KEY)
                    .setNumber(5);

            String phoneNumber = contact.getPhoneNumber();
            if(phoneNumber != null && !phoneNumber.equals("")) {
                Intent smsIntent = new Intent(Intent.ACTION_VIEW);
                smsIntent.setData(Uri.parse("sms:" + phoneNumber));

                PendingIntent pending = PendingIntent.getActivity(context, 0, smsIntent, 0);
                builder.addAction(R.drawable.ic_arrow_back, "SMS", pending);
            }

            if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O)
                notificationManagerCompat.notify(i, builder.build());
            else
                notificationManager.notify(i, builder.build());
        }

        NotificationCompat.Builder summaryBuilder = new NotificationCompat.Builder(context, CHANNEL_ID)
                .setSmallIcon(R.mipmap.ic_notification)
                .setContentTitle("Today Birthdays")
                .setContentText(hasBirthday.size() + " new messages")
                .setStyle(summaryStyle)
                .setGroup(GROUP_KEY)
                .setGroupSummary(true)
                .setNumber(5);

        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O)
            notificationManagerCompat.notify(SUMMARY_ID, summaryBuilder.build());
        else
            notificationManager.notify(SUMMARY_ID, summaryBuilder.build());
    }
}

编辑：尝试在NotificationCompat.Builder构建器上使用 setColor ，但它更改了the color of the icon。仍然没有任何徽章。

Answer 1

感谢Bob和他的链接：https://support.google.com/pixelphone/thread/1575301?hl=en， 我发现我必须去设置<应用程序和通知<特殊应用程序访问<通知<通知访问<为“像素启动器”打开。然后通知点将按预期出现！

我想是时候写报告了。