QMediaPlaylist类提供了save()和load()函数供我们保存和加载播放列表。

这是在网上找到的示例片段：

地址：

bool QMediaPlaylist::save(const QUrl &location, const char *format){    Q_D(QMediaPlaylist);     d->error = NoError;    d->errorString.clear();     if (d->playlist()->save(location,format))        return true;     QFile file(location.toLocalFile());     if (!file.open(QIODevice::WriteOnly | QIODevice::Truncate)) {        d->error = AccessDeniedError;        d->errorString = tr("The file could not be accessed.");        return false;    }     return save(&file, format);} /*!  Save playlist to QIODevice \a device using format \a format.   Returns true if playlist was saved successfully, otherwise returns false.*/bool QMediaPlaylist::save(QIODevice * device, const char *format){    Q_D(QMediaPlaylist);     d->error = NoError;    d->errorString.clear();     if (d->playlist()->save(device,format))        return true;     foreach (QString const& key, playlistIOLoader()->keys()) {        QMediaPlaylistIOInterface* plugin = qobject_cast
     
      (playlistIOLoader()->instance(key));        if (plugin && plugin->canWrite(device,format)) {            QMediaPlaylistWriter *writer = plugin->createWriter(device,QByteArray(format));            if (writer && d->writeItems(writer)) {                delete writer;                return true;            }            delete writer;        }    }     d->error = FormatNotSupportedError;    d->errorString = tr("Playlist format is not supported.");     return false;}
     

　　

自己测试了一下（使用m3u格式测试成功）：

QFile file("plist.m3u");file.open(QIODevice::WriteOnly);playList->save(&file,"m3u");

加载方式类似