android - 在通知 channel 中启用声音按钮

Question

在MI Note 5 Pro中，它有最新的MI UI 10.0 with Oreo，所以当我尝试默认发送推送通知时声音被禁用，所以当我为此创建 channel 时，我无法以编程方式启用声音。

在其他 Oreo 设备中会发出通知声音，但在 MI 自定义 Oreo OS 声音默认情况下禁用

让我展示我的通知代码:

    var intent = Intent(mContext, HomeActivity::class.java)
    intent.putExtra(Constants.EXTRA_FROM_NOTIFICATION, true)
    var pendingIntent = PendingIntent.getActivity(mContext, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)

    var uri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION)

    var mBuilder = NotificationCompat.Builder(mContext, NOTIFICATION_CHANNEL_ID)
            .setContentTitle(mContext.getString(R.string.app_name))
            .setContentText(mFirstContactName + " : " + mListChatWindow[0].message)
            .setPriority(if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) NotificationManager.IMPORTANCE_HIGH else Notification.PRIORITY_HIGH)
            .setContentIntent(pendingIntent)
            .setSound(uri)
            .setSmallIcon(R.drawable.ic_app_icon)
            .setColor(ContextCompat.getColor(mContext, R.color.colorPrimary))
            .setVibrate(longArrayOf(0, 100, 1000, 300))
            .setAutoCancel(true)

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        var channel = NotificationChannel(NOTIFICATION_CHANNEL_ID, "NOTIFICATION_CHANNEL_NAME", NotificationManager.IMPORTANCE_HIGH)
        channel.description = "NOTIFICATION_DESCRIPTION"
        channel.lightColor = Color.LTGRAY
        channel.enableVibration(true)
        channel.lockscreenVisibility = Notification.VISIBILITY_PUBLIC

        val attributes = AudioAttributes.Builder().setUsage(AudioAttributes.USAGE_NOTIFICATION).build()
        channel.setSound(uri, attributes)
        var notificationManager = mContext.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
        notificationManager.createNotificationChannel(channel)
    }

    var notificationManager = NotificationManagerCompat.from(mContext)
    notificationManager.notify(NOTIFICATION_CHAT_ID, mBuilder.build())

我也在 cannel 中设置了 channel.setSound(uri, attributes) 但是没有声音

这是通知 channel 的截图，看到声音图标被禁用了，如何启用？

请帮忙

Answer 1

我在使用 oreo 的 MIUI Global 10.1 中遇到了类似的问题，但它只是在使用自定义声音时出现，而不像你的默认声音。不管怎样，让我解释一下我是如何解决它的，希望它能解决你的问题。

首先要考虑的是在何处执行通知 channel 的注册。它必须在 Application.onCreate 中执行，以便在通知到达之前创建 channel 。我是在 onMessageReceived 中做的。

其次，正如我所说，它适用于默认通知声音而不适用于自定义声音，我在创建通知 channel 时插入了下面的代码并且它起作用了。

NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this,CHANNEL_ID);

    if (Build.VERSION.SDK_INT>= Build.VERSION_CODES.O) {
        notificationBuilder.setDefaults(Notification.DEFAULT_SOUND); // This line did the magic for me.

        Uri sound = Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.sound_notification_plucky);
        AudioAttributes audioAttributes = new AudioAttributes.Builder()
                .setUsage(AudioAttributes.USAGE_NOTIFICATION)
                .build();

        CharSequence name = "MyChild";
        String description = "All MyChild messages";
        int importance = NotificationManager.IMPORTANCE_HIGH;

        NotificationChannel notificationChannel = new NotificationChannel(CHANNEL_ID, name, importance);
        notificationChannel.setDescription(description);
        notificationChannel.enableVibration(true);
        notificationChannel.setSound(sound, audioAttributes);

        NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
        notificationManager.createNotificationChannel(notificationChannel);
    }