Android 通知声音未播放

Question

我有一个简单的通知应用程序，我试图在其中添加 mp3 声音作为通知声音。每次触发通知时，都会播放默认通知，而不是原始文件夹中的 mp3 文件。我尝试了很多并使用了很多解决方案，但仍然无法正常工作。

这是我在按钮单击表单 MainActivity 上的代码；

 binding.btnShowNotifications.setOnClickListener(v -> {

            Toast.makeText(this, "Set reminder", Toast.LENGTH_SHORT).show();

            Intent intent = new Intent(MainActivity.this, NotificationReceiver.class);
            PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, 0);

            AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
            long system = System.currentTimeMillis();
            long ten = 10 * 1000;

            alarmManager.set(AlarmManager.RTC_WAKEUP, system + ten, pendingIntent);

        });

这是我的广播接收器类；

import android.app.Notification;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.content.BroadcastReceiver;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.graphics.Color;
import android.media.AudioAttributes;
import android.net.Uri;
import android.os.Build;
import androidx.core.app.NotificationCompat;

public class NotificationReceiver extends BroadcastReceiver {

    public static final String CHANNEL_ONE_ID = "channel_one";

    @Override
    public void onReceive(Context context, Intent intent) {
        Uri mediaPath = Uri.parse(ContentResolver.SCHEME_ANDROID_RESOURCE + "://" + context.getPackageName() + "/" + R.raw.sound_one);
        createNotifications(context, mediaPath);
    }

    private void createNotifications(Context context, Uri mediaPath) {
        try {

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

            NotificationChannel channel;
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {

                channel = new NotificationChannel(
                        CHANNEL_ONE_ID,
                        "Test Channel",
                        NotificationManager.IMPORTANCE_DEFAULT);
                channel.setLightColor(Color.GRAY);
                channel.enableLights(true);
                channel.enableVibration(true);
                channel.setDescription(context.getResources().getString(R.string.app_name));
                AudioAttributes audioAttributes = new AudioAttributes.Builder()
                        .setUsage(AudioAttributes.USAGE_NOTIFICATION)
                        .build();
                channel.setSound(mediaPath, audioAttributes);

                if (notificationManager != null) {
                    notificationManager.createNotificationChannel(channel);
                }
            }

            NotificationCompat.Builder mNotification = new NotificationCompat.Builder(context, CHANNEL_ONE_ID);
            mNotification
                    .setWhen(System.currentTimeMillis())
                    .setSmallIcon(R.drawable.ic_launcher_background)
                    .setContentTitle(context.getResources().getString(R.string.app_name))
                    .setAutoCancel(true)
                    .setPriority(Notification.PRIORITY_DEFAULT)
                    .setVibrate(new long[]{0, 500, 1000})
                    .setDefaults(Notification.DEFAULT_LIGHTS)
                    .setSound(Uri.parse(ContentResolver.SCHEME_ANDROID_RESOURCE + "://" + context.getPackageName() + "/" + R.raw.sound_one))
                    .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
                    .setContentText(context.getResources().getString(R.string.app_name));


            assert notificationManager != null;
            notificationManager.notify(1, mNotification.build());

        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }
}