android - 为通知设置自定义声音

Question

I'm trying to set custom sound for notification.

详情:

我正在尝试根据用户的选择(从他们的手机存储中)设置通知声音。
为此，我将路径保存到 db 并在通知出现时显示通知并设置声音；我从现有通知 ID 中获取声音。

从那我决定哪个声音应该播放用户选择的声音或默认声音......但这根本不起作用......它不播放任何声音，甚至不是默认声音。

如何设置/播放自定义声音通知!？

经过谷歌研究:许多建议从原始文件夹播放声音，但我没有得到答案，我将用户选择的声音保存到原始文件夹(当然是编程盟友)，所以我可以从原始文件夹播放声音..

PS 有很多与此相关的答案，但它们不符合我的要求

这是我的代码:

 private void showNotification(Context context, Things things) {

    try {
        NotificationManager mNotifyMgr =
                (NotificationManager) context.getSystemService(NOTIFICATION_SERVICE);

        NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context)
                .setSmallIcon(R.drawable.icon)
                //example for large icon
                .setLargeIcon(BitmapFactory.decodeResource(context.getResources(), R.drawable.icon))
                .setContentTitle(things.getTitle())
                .setContentText(things.getThing()).setSubText(things.getNotification())
                .setOngoing(false)
                .setPriority(NotificationCompat.PRIORITY_DEFAULT)
                .setAutoCancel(true);
        Intent i = new Intent(context, HomeActivity.class);
        PendingIntent pendingIntent =
                PendingIntent.getActivity(
                        context,
                        0,
                        i,
                        PendingIntent.FLAG_ONE_SHOT
                );
        // example for blinking LED
        mBuilder.setLights(0xFFb71c1c, 1000, 2000);
        if (things.getRingtone() == null || things.getRingtone().equals("")) {
            mBuilder.setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION));

        } else {
           Ringtone r = RingtoneManager.getRingtone(context, Uri.parse(things.getRingtone()));
            r.play();
            Toast.makeText(context, things.getRingtone(), Toast.LENGTH_SHORT).show();
        }
        //mBuilder.setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION));
        mBuilder.setContentIntent(pendingIntent);
        mNotifyMgr.notify(12345, mBuilder.build());
    } catch (Exception e) {
        Log.d(getClass().getName(), "catch  " + e.toString());
    }
}

Answer 1

从 API 26 (Oreo) 开始，您需要在通知 channel 上设置声音。 channel 一旦创建，其设置(包括声音)将无法更改，除非重新安装应用程序或清除本地数据。

因此，最好的方法是拥有两个(或更多) channel - 一个用于您想要播放的每种声音/振动。

在代码中，您可以根据要播放的声音来决定使用哪个 channel 。

这是我的代码，我根据客户端的设置播放默认通知声音或自定义声音。该代码还负责在 API 26 之前运行 Android 的设备:

String sound = PreferenceManager.getDefaultSharedPreferences(getApplicationContext()).getString("NotificationsSound", getString(R.string.settingsNotificationSiren));
Uri soundUri = Uri.parse(ContentResolver.SCHEME_ANDROID_RESOURCE + "://"+ getApplicationContext().getPackageName() + "/" + R.raw.siren);
NotificationManager mNotificationManager = (NotificationManager) getApplicationContext().getSystemService(Context.NOTIFICATION_SERVICE);
NotificationChannel mChannel;
String channel_id = Utils.CHANNEL_DEFAULT_ID;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
    if (sound.toLowerCase().equals(getString(R.string.settingsNotificationSiren).toLowerCase())) {
        channel_id = Utils.CHANNEL_SIREN_ID;
        mChannel = new NotificationChannel(Utils.CHANNEL_SIREN_ID, Utils.CHANNEL_SIREN_NAME, NotificationManager.IMPORTANCE_HIGH);
        mChannel.setLightColor(Color.GRAY);
        mChannel.enableLights(true);
        mChannel.setDescription(Utils.CHANNEL_SIREN_DESCRIPTION);
        AudioAttributes audioAttributes = new AudioAttributes.Builder()
                .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
                .setUsage(AudioAttributes.USAGE_NOTIFICATION)
                .build();
        mChannel.setSound(soundUri, audioAttributes);
    } else {
        mChannel = new NotificationChannel(Utils.CHANNEL_DEFAULT_ID, Utils.CHANNEL_DEFAULT_NAME, NotificationManager.IMPORTANCE_HIGH);
        mChannel.setLightColor(Color.GRAY);
        mChannel.enableLights(true);
        mChannel.setDescription(Utils.CHANNEL_DEFAULT_DESCRIPTION);
    }
    if (mNotificationManager != null) {
        mNotificationManager.createNotificationChannel( mChannel );
    }
}

NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this, channel_id)
        .setSmallIcon(R.drawable.ic_stat_maps_local_library)
        .setLargeIcon(BitmapFactory.decodeResource(getApplicationContext().getResources(), R.mipmap.ic_launcher))
        .setTicker(title)
        .setContentTitle(contentTitle)
        .setContentText(contentText)
        .setAutoCancel(true)
        .setLights(0xff0000ff, 300, 1000) // blue color
        .setWhen(System.currentTimeMillis())
        .setPriority(NotificationCompat.PRIORITY_DEFAULT);

if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) {
    if (sound.toLowerCase().equals(getString(R.string.settingsNotificationSiren).toLowerCase())) {
        mBuilder.setSound(soundUri);
    } else {
        mBuilder.setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION));
    }
}

int NOTIFICATION_ID = 1; // Causes to update the same notification over and over again.
if (mNotificationManager != null) {
    mNotificationManager.notify(NOTIFICATION_ID, mBuilder.build());
}