QT音乐播放器实战项目资源

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资源介绍:

在本QT音乐播放器实战项目中，实现了音乐播放器的基本功能，例如开始播放、停止播放、下一首播放、上一首播放、调节音量、调节倍速、设置音乐播放模式等。同时还具备搜索功能，通过搜索歌曲名字或歌手名字来获取歌曲，实现播放网上音乐。该QT实战项目代码量在600~700之间，适合QT学者拿来练习，增加项目经验。该资源包含了该项目的全部源代码和项目中用到的资源文件。项目的效果演示在我的文章和视频中有展现，感兴趣的可以去看一下效果。

#include "mainwindow.h" #include "ui_mainwindow.h" #include #include #define DEFINE_WIDTH 1020 //窗体宽度 #define DEFINE_HEIGHT 600 //窗体高度 #define REQUEST_PATH "https://music.cyrilstudio.top/search?keywords=" //搜索歌手/歌曲路径 #define NETWORK_MUSIC_PATH "https://music.163.com/song/media/outer/url?id=" //歌曲播放路径 MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent) , ui(new Ui::MainWindow) { ui->setupUi(this); setWindowTitle("我的音乐播放器"); setFixedSize(DEFINE_WIDTH,DEFINE_HEIGHT); setWindowIcon(QIcon(":/Resources/images/musicIcon.ico")); m_curVolumeVal = 50; //初始化当前音量为50 m_curRate = 1.0; //初始化当前倍速为1.0x m_curMusicName = new QLabel(this); m_curMusicVolume = new QLabel(this); m_musicStatus = new QLabel(this); m_networkPlayList = new QMediaPlaylist(this); m_networkPlayList->setPlaybackMode(QMediaPlaylist::Loop); m_localPlayList = new QMediaPlaylist(this); m_localPlayList->setPlaybackMode(QMediaPlaylist::Loop); addLocalSongs(); //将本地音乐添加到播放列表 m_player = new QMediaPlayer(this); m_player->setPlaylist(m_localPlayList); //设置播放器播放列表 m_player->setVolume(m_curVolumeVal); //设置播放器音量 m_player->setMedia(m_localPlayList); //设置播放器音乐 connect(m_player,&QMediaPlayer::durationChanged,this,&MainWindow::onMusicTotalTimeChanged); connect(m_player,&QMediaPlayer::positionChanged,this,&MainWindow::onMusicCurrentTimeChanged); connect(m_player,&QMediaPlayer::mediaStatusChanged,this,&MainWindow::onMediaStatusChanged); m_NetAccessManger = new QNetworkAccessManager(this); connect(m_NetAccessManger,&QNetworkAccessManager::finished,this,&MainWindow::onReplied); init(); //初始化 } MainWindow::~MainWindow() { delete ui; } //初始化 void MainWindow::init() { initSub(); //初始化组件 initStatusBar(); //初始化状态栏 initBtnPlayMode(); //初始化播放模式按钮 } //初始化组件 void MainWindow::initSub() { //初始化下拉框 QStringList speedList; speedList<<"0.5x"<<"1.0x"<<"1.25x"<<"1.75x"<<"2.0x"; ui->comboBoxSpeed->addItems(speedList); ui->comboBoxSpeed->setCurrentIndex(1); //初始化音量 ui->horizontalSliderVolume->setMinimum(0); ui->horizontalSliderVolume->setMaximum(100); ui->horizontalSliderVolume->setValue(m_curVolumeVal); //初始化音乐当前时间和总时间标签 ui->labelCurrentTime->setText("00:00"); ui->labelTotalTime->setText("未知"); //初始化listwidgetLocalList QStringList localList; localList<<"纯音乐1"<<"像风一样自由"<<"Areyouok"; ui->listWidgetLocalList->clear(); for(int i=0;ilistWidgetLocalList->addItem(item); if(i == 0) { ui->listWidgetLocalList->setCurrentItem(item); } } //初始化歌词行 QPalette pal; pal.setColor(QPalette::Text,QColor(Qt::blue)); ui->lineEditLyrics->setPalette(pal); } //初始化状态栏 void MainWindow::initStatusBar() { ui->statusbar->setStyleSheet("margin-right: 20px;"); //状态栏中的所有小部件设置右边距为20px //初始化标签 m_curMusicName->setText("当前歌曲：未知"); m_curMusicVolume->setText(QString("当前音量：%1").arg(m_curVolumeVal)); m_musicStatus->setText("音乐状态：正常"); //向状态栏中添加标签 ui->statusbar->addWidget(m_curMusicName); ui->statusbar->addWidget(m_curMusicVolume); ui->statusbar->addWidget(m_musicStatus); } //初始化播放模式按钮 void MainWindow::initBtnPlayMode() { QMediaPlaylist* tempList = m_player->playlist(); if(tempList->playbackMode() == QMediaPlaylist::Loop) { ui->pushButtonPlayMode->setText("顺序播放"); } else if(tempList->playbackMode() == QMediaPlaylist::Random) { ui->pushButtonPlayMode->setText("随机播放"); } else if(tempList->playbackMode() == QMediaPlaylist::CurrentItemInLoop) { ui->pushButtonPlayMode->setText("单曲循环"); } } //更新播放倍速 void MainWindow::updateRate() { int count = ui->comboBoxSpeed->count(); //获取倍速下拉框的item数目 for(int i = 0;icomboBoxSpeed->itemText(i); //获取item文本 int strSize = str.size(); qreal rate = str.left(strSize - 1).toFloat(); //例如：倍速1.25x，把x去掉，然后转为float类型 if(rate == m_curRate) { ui->comboBoxSpeed->setCurrentIndex(i); //恢复倍速下拉框 m_player->setPlaybackRate(m_curRate); //恢复本地音乐播放倍速 return; } } } //将本地音乐添加到本地播放列表 void MainWindow::addLocalSongs() { m_localPlayList->clear(); m_localPlayList->addMedia(QUrl("qrc:/Resources/sound/background.mp3")); m_localPlayList->addMedia(QUrl("qrc:/Resources/sound/freelikewind.mp3")); m_localPlayList->addMedia(QUrl("qrc:/Resources/sound/Areyouok.mp3")); m_localPlayList->setCurrentIndex(0); } //歌曲总时间改变槽函数 void MainWindow::onMusicTotalTimeChanged(qint64 totalTime) { //更新歌曲总时间 int totalSec = totalTime / 1000; //毫秒换算成秒 int m = totalSec / 60; //获取分钟 int s = totalSec % 60; //获取秒 //设置labelTotalTime文本 ui->labelTotalTime->setText(QString("%1:%2").arg(m,2,10,QChar('0')).arg(s,2,10,QChar('0'))); ui->horizontalSliderTime->setMaximum(totalTime); //设置音乐时间条的最大值为总时间的值 //更新listwidget和状态栏中的标签内容 QListWidgetItem* item = nullptr; QMediaPlaylist* tempList = m_player->playlist(); if(tempList == m_localPlayList) { //更新listWidgetLocalList当前选中的子项 int curIndex = tempList->currentIndex(); item = ui->listWidgetLocalList->item(curIndex); ui->listWidgetLocalList->setCurrentItem(item); //更新歌曲名显示标签 QString musicName = item->text(); m_curMusicName->setText("当前歌曲："+musicName); } else if(tempList == m_networkPlayList) { //更新listWidgetNetList当前选中的子项 int curIndex = tempList->currentIndex(); item = ui->listWidgetNetList->item(curIndex); ui->listWidgetNetList->setCurrentItem(item); //更新歌曲名显示标签 QString musicName = m_VecMusicInfos[curIndex].getMusicName() + " " + m_VecMusicInfos[curIndex].getMusicSinger(); m_curMusicName->setText("当前歌曲："+musicName); } } //更新音乐播放的当前时间进度槽函数 void MainWindow::onMusicCurrentTimeChanged(qint64 curTime) { int totalSec = curTime / 1000; int m = totalSec / 60; int s = totalSec % 60; ui->labelCurrentTime->setText(QString("%1:%2").arg(m,2,10,QChar('0')).arg(s,2,10,QChar('0'))); ui->horizontalSliderTime->setValue(curTime); } //媒体状态发生改变槽函数 void MainWindow::onMediaStatusChanged(QMediaPlayer::MediaStatus status) { if(status == QMediaPlayer::InvalidMedia) { ui->statusbar->showMessage("音乐状态：无法播放",1000); } else if(status == QMediaPlayer::LoadingMedia) { m_musicStatus->setText("音乐状态：�

资源文件列表:

QTMusicPlayer.zip 大约有14个文件

E:/QTMusicPlayer/Resources/
E:/QTMusicPlayer/Resources/sound/
E:/QTMusicPlayer/Resources/images/
E:/QTMusicPlayer/mainwindow.h 3.33KB
E:/QTMusicPlayer/mainwindow.ui 14.21KB
E:/QTMusicPlayer/musicinfo.cpp 797B
E:/QTMusicPlayer/musicinfo.h 869B
E:/QTMusicPlayer/MyMusicPlayer.pro 1.08KB
E:/QTMusicPlayer/main.cpp 183B
E:/QTMusicPlayer/mainwindow.cpp 19.3KB
E:/QTMusicPlayer/Resources/sound/background.mp3 514.42KB
E:/QTMusicPlayer/Resources/sound/freelikewind.mp3 1.77MB
E:/QTMusicPlayer/Resources/sound/Areyouok.mp3 2.03MB
E:/QTMusicPlayer/Resources/images/musicIcon.ico 3.89KB