Java 通过setSound（）设置自定义通知声音（和振动）无效

尝试在我的应用程序中创建通知时，设置自定义通知声音无效，将使用系统默认声音。另外，我正在尝试在我的通知上启用振动，这也不起作用

我试图将声音设置如下（相关片段，请参阅下面的完整代码）：

我的自定义声音是一个1秒长的声音片段，以44.1 kHz的频率采样，存储为

res/raw/bell.wav

。我还尝试将代码片段转换为其他不同的格式，我尝试了

mp3

和

ogg

，但没有成功。 关于振动：

android.permission.vibration

包含在清单中

我不知道我做错了什么。下面是创建和发布通知的

sendNotification（）

函数的完整代码

private void sendNotification(String messageBody) {
    Intent intent = new Intent(this, MainActivity.class);
    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent,
            PendingIntent.FLAG_ONE_SHOT);

    String channelId = getString(R.string.default_notification_channel_id);
    Uri sound = Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.bell);
    NotificationCompat.Builder notificationBuilder =
            new NotificationCompat.Builder(this, channelId)
                    .setSmallIcon(R.drawable.ic_launcher_web)
                    .setContentTitle("New order")
                    .setContentText(messageBody)
                    .setAutoCancel(true)
                    .setContentIntent(pendingIntent);

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

    // Since android Oreo notification channel is needed.
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        NotificationChannel channel = new NotificationChannel(channelId,
                "Order notifications",
                NotificationManager.IMPORTANCE_MAX);
        notificationManager.createNotificationChannel(channel);

        AudioAttributes att = new AudioAttributes.Builder()
                .setUsage(AudioAttributes.USAGE_NOTIFICATION)
                .setContentType(AudioAttributes.CONTENT_TYPE_SPEECH)
                .build();

        channel.setSound(sound, att);
        channel.setVibrationPattern(new long[]{0, 500});
    } else {
        notificationBuilder
                .setVibrate(new long[]{0, 500})
                .setSound(sound);
    }

    notificationManager.notify(0, notificationBuilder.build());
}

---

创建通知频道后，您无法更改灯光、声音和振动等内容。也许这就是问题所在。要查看更改，您需要先删除应用程序，然后重新安装。

感谢您的回答，不幸的是，即使在卸载应用程序，甚至更改频道名称之后，这也无法解决我的问题

private void sendNotification(String messageBody) {
    Intent intent = new Intent(this, MainActivity.class);
    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent,
            PendingIntent.FLAG_ONE_SHOT);

    String channelId = getString(R.string.default_notification_channel_id);
    Uri sound = Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.bell);
    NotificationCompat.Builder notificationBuilder =
            new NotificationCompat.Builder(this, channelId)
                    .setSmallIcon(R.drawable.ic_launcher_web)
                    .setContentTitle("New order")
                    .setContentText(messageBody)
                    .setAutoCancel(true)
                    .setContentIntent(pendingIntent);

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

    // Since android Oreo notification channel is needed.
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        NotificationChannel channel = new NotificationChannel(channelId,
                "Order notifications",
                NotificationManager.IMPORTANCE_MAX);
        notificationManager.createNotificationChannel(channel);

        AudioAttributes att = new AudioAttributes.Builder()
                .setUsage(AudioAttributes.USAGE_NOTIFICATION)
                .setContentType(AudioAttributes.CONTENT_TYPE_SPEECH)
                .build();

        channel.setSound(sound, att);
        channel.setVibrationPattern(new long[]{0, 500});
    } else {
        notificationBuilder
                .setVibrate(new long[]{0, 500})
                .setSound(sound);
    }

    notificationManager.notify(0, notificationBuilder.build());
}