用qt做音乐播放器出西现异常退出 退出代码: -1073741819

[weixin_38058190]

#include "qplayer.h"#include <QtGui>#include "ui_qplayer.h"#include <ctime>#include <QVariant>#include<display.h>QPlayer::QPlayer(QWidget *parent) :    QMainWindow(parent),    ui(new Ui::QPlayer){    audioOutput = new Phonon::AudioOutput(Phonon::MusicCategory, this);//初始化系列变量    mediaObject = new Phonon::MediaObject(this);    metaInformationResolver = new Phonon::MediaObject(this);    mediaObject->setTickInterval(1000);    QString wn(QCoreApplication::applicationDirPath() + "/father.lrc");    display = new Display(wn);    ui->verticalLayout->addWidget(display);//源码 QMusic0.rar (3077 K) 下载次数:2 源码 QMusic0.rar (3077 K) 下载次数:2 源码 QMusic0.rar (3077 K) 下载次数:2     connect(mediaObject, SIGNAL(tick(qint64)), this, SLOT(tick(qint64)));    connect(mediaObject, SIGNAL(stateChanged(Phonon::State, Phonon::State)),            this, SLOT(stateChanged(Phonon::State, Phonon::State)));    connect(metaInformationResolver, SIGNAL(stateChanged(Phonon::State,Phonon::State)),            this, SLOT(metaStateChanged(Phonon::State, Phonon::State)));    connect(mediaObject, SIGNAL(currentSourceChanged(const Phonon::MediaSource &)),            this, SLOT(sourceChanged(const Phonon::MediaSource &)));    connect(mediaObject, SIGNAL(aboutToFinish()), this, SLOT(aboutToFinish()));    Phonon::createPath(mediaObject, audioOutput);    setupActions();    ui->setupUi(this);    ui->seekSlider->setMediaObject(mediaObject);    ui->volumeSlider->setAudioOutput(audioOutput);    ui->volumeSlider->setSizePolicy(QSizePolicy::Maximum, QSizePolicy::Maximum);    QPalette palette;    palette.setBrush(QPalette::Light, Qt::darkGray);    ui->lcdNumber->setPalette(palette);    QStringList headers;    headers << tr("标题") << tr("作者") << tr("唱片") << tr("年代");    ui->tableWidget->setHorizontalHeaderLabels(headers);    ui->tableWidget->setSelectionMode(QAbstractItemView::SingleSelection);    ui->tableWidget->setSelectionBehavior(QAbstractItemView::SelectRows);    connect(ui->tableWidget, SIGNAL(cellPressed(int, int)),            this, SLOT(tableClicked(int, int)));    ui->lcdNumber->display("00:00");    ui->PauseButton->hide();}QPlayer::~QPlayer(){    delete ui;}void QPlayer::changeEvent(QEvent *e){    QMainWindow::changeEvent(e);    switch (e->type()) {    case QEvent::LanguageChange:        ui->retranslateUi(this);        break;    default:        break;    }}void QPlayer::setupActions(){    playAction = new QAction(style()->standardIcon(QStyle::SP_MediaPlay), tr("Play"), this);    playAction->setShortcut(tr("Crl+P"));    playAction->setDisabled(true);    pauseAction = new QAction(style()->standardIcon(QStyle::SP_MediaPause), tr("Pause"), this);    pauseAction->setShortcut(tr("Ctrl+A"));    pauseAction->setDisabled(true);    stopAction = new QAction(style()->standardIcon(QStyle::SP_MediaStop), tr("Stop"), this);    stopAction->setShortcut(tr("Ctrl+S"));    stopAction->setDisabled(true);    nextAction = new QAction(style()->standardIcon(QStyle::SP_MediaSkipForward), tr("Next"), this);    nextAction->setShortcut(tr("Ctrl+N"));    previousAction = new QAction(style()->standardIcon(QStyle::SP_MediaSkipBackward), tr("Previous"), this);    previousAction->setShortcut(tr("Ctrl+R"));    addFilesAction = new QAction(tr("Add &Files"), this);    addFilesAction->setShortcut(tr("Ctrl+F"));    connect(playAction, SIGNAL(triggered()), mediaObject, SLOT(play()));    connect(pauseAction, SIGNAL(triggered()), mediaObject, SLOT(pause()) );    connect(stopAction, SIGNAL(triggered()), mediaObject, SLOT(stop()));    connect(addFilesAction, SIGNAL(triggered()), this, SLOT(addFiles()));}void QPlayer::addFiles(){    QStringList files = QFileDialog::getOpenFileNames(this, tr("选择音乐文件"),        QDesktopServices::storageLocation(QDesktopServices::MusicLocation));    if (files.isEmpty())        return;    int index = sources.size();    foreach (QString string, files) {            Phonon::MediaSource source(string);        sources.append(source);    }    if (!sources.isEmpty())        metaInformationResolver->setCurrentSource(sources.at(index));}void QPlayer::tableClicked(int row, int){    bool wasPlaying = mediaObject->state() == Phonon::PlayingState;    mediaObject->stop();    mediaObject->clearQueue();    if (row >= sources.size())        return;    mediaObject->setCurrentSource(sources[row]);    if (wasPlaying)        mediaObject->play();    else        mediaObject->stop();}void QPlayer::tick(qint64 time){    QTime displayTime(0, (time / 60000) % 60, (time / 1000) % 60);    ui->lcdNumber->display(displayTime.toString("mm:ss"));}void QPlayer::sourceChanged(const Phonon::MediaSource &source){    ui->tableWidget->selectRow(sources.indexOf(source));    ui->lcdNumber->display("00:00");}void QPlayer::metaStateChanged(Phonon::State newState, Phonon::State){    if (newState == Phonon::ErrorState) {        QMessageBox::warning(this, tr("文件格式错误"),            metaInformationResolver->errorString());        while (!sources.isEmpty() &&               !(sources.takeLast() == metaInformationResolver->currentSource())) {};        return;    }    if (newState != Phonon::StoppedState && newState != Phonon::PausedState)        return;    if (metaInformationResolver->currentSource().type() == Phonon::MediaSource::Invalid)            return;    QMap<QString, QString> metaData = metaInformationResolver->metaData();    QString title = metaData.value("TITLE");    if (title == "")        title = metaInformationResolver->currentSource().fileName();    QTableWidgetItem *titleItem = new QTableWidgetItem(title);    titleItem->setFlags(titleItem->flags() ^ Qt::ItemIsEditable);    QTableWidgetItem *artistItem = new QTableWidgetItem(metaData.value("ARTIST"));    artistItem->setFlags(artistItem->flags() ^ Qt::ItemIsEditable);    QTableWidgetItem *albumItem = new QTableWidgetItem(metaData.value("ALBUM"));    albumItem->setFlags(albumItem->flags() ^ Qt::ItemIsEditable);    QTableWidgetItem *yearItem = new QTableWidgetItem(metaData.value("DATE"));    yearItem->setFlags(yearItem->flags() ^ Qt::ItemIsEditable);    int currentRow = ui->tableWidget->rowCount();    ui->tableWidget->insertRow(currentRow);    ui->tableWidget->setItem(currentRow, 0, titleItem);    ui->tableWidget->setItem(currentRow, 1, artistItem);    ui->tableWidget->setItem(currentRow, 2, albumItem);    ui->tableWidget->setItem(currentRow, 3, yearItem);    if (ui->tableWidget->selectedItems().isEmpty()) {        ui->tableWidget->selectRow(0);        mediaObject->setCurrentSource(metaInformationResolver->currentSource());    }    Phonon::MediaSource source = metaInformationResolver->currentSource();    int index = sources.indexOf(metaInformationResolver->currentSource()) + 1;    if (sources.size() > index) {        metaInformationResolver->setCurrentSource(sources.at(index));    }    else {        ui->tableWidget->resizeColumnsToContents();        if (ui->tableWidget->columnWidth(0) > 300)            ui->tableWidget->setColumnWidth(0, 300);    }}void QPlayer::stateChanged(Phonon::State newState, Phonon::State){    switch (newState) {        case Phonon::ErrorState:            if (mediaObject->errorType() == Phonon::FatalError) {                QMessageBox::warning(this, tr("致命错误"),                mediaObject->errorString());            } else {                QMessageBox::warning(this, tr("错误"),                mediaObject->errorString());            }            break;        case Phonon::PlayingState:                playAction->setEnabled(false);                pauseAction->setEnabled(true);                stopAction->setEnabled(true);                ui->PauseButton->show();                ui->PlayButton->hide();                break;        case Phonon::StoppedState:                stopAction->setEnabled(false);                playAction->setEnabled(true);                pauseAction->setEnabled(false);                ui->lcdNumber->display("00:00");                ui->PlayButton->show();                ui->PauseButton->hide();                break;        case Phonon::PausedState:                pauseAction->setEnabled(false);                stopAction->setEnabled(true);                playAction->setEnabled(true);                ui->PlayButton->show();                ui->PauseButton->hide();                break;        case Phonon::BufferingState:                break;        default:            ;    }}void QPlayer::nextFile(){    int index = sources.indexOf(mediaObject->currentSource()) + 1;    if (sources.size() > index) {         mediaObject->stop();         mediaObject->setCurrentSource(sources.at(index));         mediaObject->play();     }}void QPlayer::prevFile(){    int index = sources.indexOf(mediaObject->currentSource()) - 1;    if (sources.size() > index && index >= 0) {         mediaObject->stop();         mediaObject->setCurrentSource(sources.at(index));         mediaObject->play();     }}void QPlayer::rndFile(){    int index=sources.indexOf(mediaObject->currentSource());    int max = sources.size();    int rnIdx = index;    srand((unsigned)time(0));    while(rnIdx == index)    {        rnIdx=rand()%max;    }    mediaObject->stop();    mediaObject->setCurrentSource(sources.at(rnIdx));    mediaObject->play();}void QPlayer::aboutToFinish(){    nextFile();}void QPlayer::finished(){         ui->PlayButton->setChecked(false);}void QPlayer::removeFiles(){    int index=sources.indexOf(mediaObject->currentSource());    int p=ui->tableWidget->currentRow();    if (p==index){        nextFile();    }        sources.removeAt(p);       ui->tableWidget->removeRow(p);}void QPlayer::on_AddButton_clicked(){    addFilesAction->trigger();}void QPlayer::on_PlayButton_clicked(){    playAction->trigger();}void QPlayer::on_StopButton_clicked(){    stopAction->trigger();}void QPlayer::on_PauseButton_clicked(){    pauseAction->trigger();}void QPlayer::on_NextButton_clicked(){    nextFile();}void QPlayer::on_PrevButton_clicked(){    prevFile();}void QPlayer::on_StyleButton_clicked(){    rndFile();}void QPlayer::on_pushButton_clicked(){    QMessageBox::about(this,tr("版本信息"),tr("版本:QT音乐_V 1.0.10版.\n\n作者:_HeyKite(EN)独男(CN)  "));}void QPlayer::on_RemoveButton_clicked(){    removeFiles();}void QPlayer::on_MuButton_clicked(){    addFilesAction->trigger();}#include "Display.h"#include <QDebug>#include <QFile>#include <QTextStream>Display::Display(const QString& fileName, QWidget *parent)    :QLabel(parent), map(new QMap<int, QString>()){    setText("正在查找歌词...");    init(fileName);}Display::~Display(){    delete map;}void Display::showWord(int time){    if(map->contains(time))    {        this->setText(map->value(time));    }}void Display::getHeader(const char *str, QString &des){    des = des.remove(str);    des = des.remove("]");}void Display::getTime(QString line){    if(line.startsWith("["))    {        int index = line.indexOf("]");        QString t = line.mid(1, index - 1);        QString mm = t.mid(0,2);        QString ss = t.mid(3, 2);        int m = mm.toInt();        int s = ss.toInt();        int time = m*60*1000 + s*1000;        t = line.mid(index + 1);        index = t.lastIndexOf("]");        if(index < 0)        {            map->insert(time, t);        }        else        {            t = t.mid(index + 1);            map->insert(time, t);            getTime(t);        }    }}void Display::init(const QString& fileName){    QFile file(fileName);    if(!file.open(QFile::ReadOnly))        return;    QTextStream stream(&file);    while(!stream.atEnd())    {        QString s = stream.readLine();        if(s.length()<4)            continue;        if(s.startsWith("[ti:"))        {            getHeader("[ti:", s);            map->insert(0, s);            continue;        }        else if(s.startsWith("[ar:"))        {            getHeader("[ar:", s);            map->insert(1000, s);            continue;        }        else if(s.startsWith("[al:"))        {            getHeader("[al:", s);            map->insert(2000, s);            continue;        }        else if(s.startsWith("[by:"))        {            getHeader("[by:", s);            map->insert(3000, s);            continue;        }        else        {            getTime(s);        }    }    file.close();}