Question

我有以下代码，但每次我只是听到默认的Android声音。

        // create  channel
        NotificationChannel channel = new NotificationChannel(ANDROID_CHANNEL_ID,
                ANDROID_CHANNEL_NAME, NotificationManager.IMPORTANCE_DEFAULT);
        // Sets whether notifications posted to this channel should display notification lights
        channel.enableLights(true);
        // Sets whether notification posted to this channel should vibrate.
        channel.enableVibration(true);
        // Sets the notification light color for notifications posted to this channel
        channel.setLightColor(Color.GREEN);
        // Sets whether notifications posted to this channel appear on the lockscreen or not
        //channel.setLockscreenVisibility(Notification.VISIBILITY_PRIVATE);
        channel.setLockscreenVisibility(Notification.VISIBILITY_PUBLIC);

        Uri uri = Uri.parse("android.resource://"+this.getPackageName()+"/" + R.raw.aperturaabductores);

        AudioAttributes att = new AudioAttributes.Builder()
                .setUsage(AudioAttributes.USAGE_NOTIFICATION)
                .setContentType(AudioAttributes.CONTENT_TYPE_SPEECH)
                .build();
        channel.setSound(uri,att);

这是我的声音pablomonteserin.es/aperturaabductores.wav

Answer 1

我试着看看你的声音文件和我的声音文件之间的区别。我使用Audacity软件。您的声音文件的采样率为22050Hz，而我使用的声音文件采样率为44100Hz。所以我将你的声音文件采样率转换为44100Hz并将其用作通知声音。现在它有效。

问题在于声音文件。可能是Android O的新变化，因为它在较旧的Android版本上运行良好。

这是重新取样的方式 -

Answer 2

if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
            Notification.Builder notificationBuilder =
                    new Notification.Builder(MyApplication.getInstance().getApplicationContext(), NOTIFICATION_CHANNEL_ID)
                            .setSmallIcon(R.mipmap.ic_launcher)
                            .setContentTitle(pTitle)
                            .setContentText(messageBody)
                            .setAutoCancel(true)
                            //.setPriority(Notification.PRIORITY_MAX) // this is deprecated in API 26 but you can still use for below 26. check below update for 26 API
                            //.setSound(defaultSoundUri)
                            .setContentIntent(pendingIntent);

            NotificationChannel notificationChannel = new NotificationChannel(NOTIFICATION_CHANNEL_ID, "My Notifications", NotificationManager.IMPORTANCE_HIGH);
            // Configure the notification channel.
            AudioAttributes att = new AudioAttributes.Builder()
                    .setUsage(AudioAttributes.USAGE_NOTIFICATION)
                    .setContentType(AudioAttributes.CONTENT_TYPE_SPEECH)
                    .build();
            notificationChannel.setSound(defaultSoundUri,att);
            notificationChannel.setDescription(messageBody);
            notificationChannel.enableLights(true);
            notificationChannel.setLightColor(Color.RED);
            notificationChannel.setVibrationPattern(new long[]{0, 1000, 500, 1000});
            notificationChannel.enableVibration(true);
            notificationManager.createNotificationChannel(notificationChannel);
            if (imageThumbnail != null) {
                notificationBuilder.setStyle(new Notification.BigPictureStyle()
                        .bigPicture(imageThumbnail).setSummaryText(messageBody));
            }
            notificationManager.notify(0 /* ID of notification */, notificationBuilder.build());

        } else {
            NotificationCompat.Builder notificationBuilder =
                    new NotificationCompat.Builder(MyApplication.getInstance().getApplicationContext())
                            .setSmallIcon(R.mipmap.ic_launcher)
                            .setContentTitle(pTitle)
                            .setContentText(messageBody)
                            .setAutoCancel(true)
                            .setPriority(Notification.PRIORITY_MAX) // this is deprecated in API 26 but you can still use for below 26. check below update for 26 API
                            .setSound(defaultSoundUri)
                            .setContentIntent(pendingIntent);
            if (imageThumbnail != null) {
                notificationBuilder.setStyle(new NotificationCompat.BigPictureStyle()
                        .bigPicture(imageThumbnail).setSummaryText(messageBody));
            }
            notificationManager.notify(0 /* ID of notification */, notificationBuilder.build());

        }

Android 8通知setSound无效

2 个答案: