Python制作一款簡易音樂播放器
安裝Python并添加到環(huán)境變量，pip安裝相關(guān)模塊：
pip install pyqt5先睹為快
在cmd窗口運(yùn)行"MusicPlayer.py"文件即可。
原理簡介
一、設(shè)計(jì)界面
界面設(shè)計(jì)的比較簡約，大概長這個樣子：
# 界面元素# --播放時間self.label1 = QLabel('00:00')self.label1.setStyle(QStyleFactory.create('Fusion'))self.label2 = QLabel('00:00')self.label2.setStyle(QStyleFactory.create('Fusion'))# --滑動條self.slider = QSlider(Qt.Horizontal, self)self.slider.sliderMoved[int].connect(lambda: self.player.setPosition(self.slider.value()))self.slider.setStyle(QStyleFactory.create('Fusion'))# --播放按鈕self.play_button = QPushButton('播放', self)self.play_button.clicked.connect(self.playMusic)self.play_button.setStyle(QStyleFactory.create('Fusion'))# --上一首按鈕self.preview_button = QPushButton('上一首', self)self.preview_button.clicked.connect(self.previewMusic)self.preview_button.setStyle(QStyleFactory.create('Fusion'))# --下一首按鈕self.next_button = QPushButton('下一首', self)self.next_button.clicked.connect(self.nextMusic)self.next_button.setStyle(QStyleFactory.create('Fusion'))# --打開文件夾按鈕self.open_button = QPushButton('打開文件夾', self)self.open_button.setStyle(QStyleFactory.create('Fusion'))self.open_button.clicked.connect(self.openDir)# --顯示音樂列表self.qlist = QListWidget()self.qlist.itemDoubleClicked.connect(self.doubleClicked)self.qlist.setStyle(QStyleFactory.create('windows'))# --如果有初始化setting, 導(dǎo)入settingself.loadSetting()# --播放模式self.cmb = QComboBox()self.cmb.setStyle(QStyleFactory.create('Fusion'))self.cmb.addItem('順序播放')self.cmb.addItem('單曲循環(huán)')self.cmb.addItem('隨機(jī)播放')# --計(jì)時器self.timer = QTimer(self)self.timer.start(1000)self.timer.timeout.connect(self.playByMode)# 界面布局self.grid = QGridLayout()self.setLayout(self.grid)self.grid.addWidget(self.qlist, 0, 0, 5, 10)self.grid.addWidget(self.label1, 0, 11, 1, 1)self.grid.addWidget(self.slider, 0, 12, 1, 1)self.grid.addWidget(self.label2, 0, 13, 1, 1)self.grid.addWidget(self.play_button, 0, 14, 1, 1)self.grid.addWidget(self.next_button, 1, 11, 1, 2)self.grid.addWidget(self.preview_button, 2, 11, 1, 2)self.grid.addWidget(self.cmb, 3, 11, 1, 2)self.grid.addWidget(self.open_button, 4, 11, 1, 2)
（1）存放音樂的文件夾選取
直接調(diào)pyqt5相應(yīng)的函數(shù)就行：
'''打開文件夾'''def openDir(self):self.cur_path = QFileDialog.getExistingDirectory(self, "選取文件夾", self.cur_path)if self.cur_path:self.showMusicList()self.cur_playing_song = ''self.setCurPlaying()self.label1.setText('00:00')self.label2.setText('00:00')self.slider.setSliderPosition(0)self.is_pause = Trueself.play_button.setText('播放')
打開文件夾后把所有的音樂文件顯示在界面左側(cè)，并保存一些必要的信息：
'''顯示文件夾中所有音樂'''def showMusicList(self):self.qlist.clear()self.updateSetting()for song in os.listdir(self.cur_path):if song.split('.')[-1] in self.song_formats:self.songs_list.append([song, os.path.join(self.cur_path, song).replace('\\', '/')])self.qlist.addItem(song)self.qlist.setCurrentRow(0)if self.songs_list:self.cur_playing_song = self.songs_list[self.qlist.currentRow()][-1]
（2）音樂播放
音樂播放功能直接調(diào)用QMediaPlayer實(shí)現(xiàn)：
'''播放音樂'''def playMusic(self):if self.qlist.count() == 0:self.Tips('當(dāng)前路徑內(nèi)無可播放的音樂文件')returnif not self.player.isAudioAvailable():self.setCurPlaying()if self.is_pause or self.is_switching:self.player.play()self.is_pause = Falseself.play_button.setText('暫停')elif (not self.is_pause) and (not self.is_switching):self.player.pause()self.is_pause = Trueself.play_button.setText('播放')
點(diǎn)擊上一首/下一首按鈕切換：
'''上一首'''def previewMusic(self):self.slider.setValue(0)if self.qlist.count() == 0:self.Tips('當(dāng)前路徑內(nèi)無可播放的音樂文件')returnpre_row = self.qlist.currentRow()-1 if self.qlist.currentRow() != 0 else self.qlist.count() - 1self.qlist.setCurrentRow(pre_row)self.is_switching = Trueself.setCurPlaying()self.playMusic()self.is_switching = False'''下一首'''def nextMusic(self):self.slider.setValue(0)if self.qlist.count() == 0:self.Tips('當(dāng)前路徑內(nèi)無可播放的音樂文件')returnnext_row = self.qlist.currentRow()+1 if self.qlist.currentRow() != self.qlist.count()-1 else 0self.qlist.setCurrentRow(next_row)self.is_switching = Trueself.setCurPlaying()self.playMusic()self.is_switching = False
雙擊某首歌切換：
'''雙擊播放音樂'''def doubleClicked(self):self.slider.setValue(0)self.is_switching = Trueself.setCurPlaying()self.playMusic()self.is_switching = False
根據(jù)播放模式切換：
'''根據(jù)播放模式播放音樂'''def playByMode(self):if (not self.is_pause) and (not self.is_switching):self.slider.setMinimum(0)self.slider.setMaximum(self.player.duration())self.slider.setValue(self.slider.value() + 1000)self.label1.setText(time.strftime('%M:%S', time.localtime(self.player.position()/1000)))self.label2.setText(time.strftime('%M:%S', time.localtime(self.player.duration()/1000)))# 順序播放if (self.cmb.currentIndex() == 0) and (not self.is_pause) and (not self.is_switching):if self.qlist.count() == 0:returnif self.player.position() == self.player.duration():self.nextMusic()# 單曲循環(huán)elif (self.cmb.currentIndex() == 1) and (not self.is_pause) and (not self.is_switching):if self.qlist.count() == 0:returnif self.player.position() == self.player.duration():self.is_switching = Trueself.setCurPlaying()self.slider.setValue(0)self.playMusic()self.is_switching = False# 隨機(jī)播放elif (self.cmb.currentIndex() == 2) and (not self.is_pause) and (not self.is_switching):if self.qlist.count() == 0:returnif self.player.position() == self.player.duration():self.is_switching = Trueself.qlist.setCurrentRow(random.randint(0, self.qlist.count()-1))self.setCurPlaying()self.slider.setValue(0)self.playMusic()self.is_switching = False
代碼文件
公眾號內(nèi)回復(fù)關(guān)鍵字：音樂播放器
作者：Charles未晞
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