PyQt5之音乐播放器

　　

　　按照自己思路简单写了个桌面播放器，只有自己喜欢的歌。使用QtDesigner设计的ui界面，功能简单，还有很多bug@~@，代码奉上：

　　

　　music_button.ui使用扩展工具pyuic5生成了music_button.py文件，内容如下：

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'music_button.ui'
#
# Created by: PyQt5 UI code generator 5.11.3
#
# WARNING! All changes made in this file will be lost!

from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(265, 65)
        MainWindow.setMinimumSize(QtCore.QSize(265, 65))
        MainWindow.setMaximumSize(QtCore.QSize(265, 169))
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(60, 10, 24, 24))
        self.pushButton.setAutoFillBackground(False)
        self.pushButton.setStyleSheet("border-image: url(:/qrc_files/up.png);")
        self.pushButton.setText("")
        self.pushButton.setAutoDefault(False)
        self.pushButton.setObjectName("pushButton")
        self.pushButton_2 = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton_2.setGeometry(QtCore.QRect(110, 10, 24, 24))
        self.pushButton_2.setStyleSheet("border-image: url(:/qrc_files/play.png);")
        self.pushButton_2.setText("")
        self.pushButton_2.status = 0
        self.pushButton_2.setObjectName("pushButton_2")
        self.pushButton_3 = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton_3.setGeometry(QtCore.QRect(160, 10, 24, 24))
        self.pushButton_3.setStyleSheet("border-image: url(:/qrc_files/down.png);")
        self.pushButton_3.setText("")
        self.pushButton_3.setObjectName("pushButton_3")
        MainWindow.setCentralWidget(self.centralwidget)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 265, 23))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)

        self.retranslateUi(MainWindow)
        self.pushButton.clicked.connect(self.pushButton_1_click)
        self.pushButton_2.clicked.connect(self.pushButton_2_click)
        self.pushButton_3.clicked.connect(self.pushButton_3_click)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))

    def pushButton_1_click(self):
        pass

    def pushButton_2_click(self):
        pass

    def pushButton_3_click(self):
        pass

from qrc_files import down
from qrc_files import play
from qrc_files import up

　　上面引入qrc文件，需要自己使用扩展工具pyrcc将图片资源转为python文件再引入，qrc文件内容如下：

<RCC>
  <qresource prefix="qrc_files/">
    <file>down.png</file>
  </qresource>
</RCC>

　　以下是down.png生成的down.py文件：

# -*- coding: utf-8 -*-

# Resource object code
#
# Created by: The Resource Compiler for PyQt5 (Qt v5.11.2)
#
# WARNING! All changes made in this file will be lost!

from PyQt5 import QtCore

qt_resource_data = b"\
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qt_resource_name = b"\
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qt_resource_struct_v1 = b"\
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qt_resource_struct_v2 = b"\
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qt_version = [int(v) for v in QtCore.qVersion().split('.')]
if qt_version < [5, 8, 0]:
    rcc_version = 1
    qt_resource_struct = qt_resource_struct_v1
else:
    rcc_version = 2
    qt_resource_struct = qt_resource_struct_v2

def qInitResources():
    QtCore.qRegisterResourceData(rcc_version, qt_resource_struct, qt_resource_name, qt_resource_data)

def qCleanupResources():
    QtCore.qUnregisterResourceData(rcc_version, qt_resource_struct, qt_resource_name, qt_resource_data)

qInitResources()

　　入口文件iuMusic.py内容如下：

# -*- coding: utf-8 -*-
# Nola

import sys
import os
from PyQt5 import QtWidgets, QtMultimedia, QtCore
from PyQt5.QtGui import QIcon
from music_button import Ui_MainWindow
from qrc_files import pause, play
import random

current_dir = os.path.dirname(os.path.abspath(__file__))
music_dir = current_dir + r'\music_datas'
music_files = os.listdir(music_dir)

class MyPlayer(QtWidgets.QMainWindow, Ui_MainWindow):
    def __init__(self):
        super(MyPlayer, self).__init__()
        self.setupUi(self)
        self.setWindowTitle("Umusic")
        self.setWindowIcon(QIcon("MusicCloud.ico"))
        self.playlist = QtMultimedia.QMediaPlaylist()  # 播放列表
        self.playlist.setPlaybackMode(QtMultimedia.QMediaPlaylist.Loop)  # 列表循环
        self.played = QtMultimedia.QMediaPlayer()
        self.played.setPlaylist(self.playlist)
        self.played.setVolume(50.0)
        self.current_index = random.randint(0, len(music_files) - 1)
        self.music_path = [(music_dir + '\\' + music_file) for music_file in music_files]

    def pushButton_1_click(self):
        """上一曲"""
        self.current_index = self.playlist.currentIndex()
        self.current_index -= 1 if self.current_index != 0 else (len(music_files) - 1)
        self.music_file = music_files[self.current_index]
        self.music_path = music_dir + '\\' + self.music_file
        self.playlist.setCurrentIndex(self.current_index)
        # self.played.setMedia(QtMultimedia.QMediaContent(QtCore.QUrl.fromLocalFile(music_files[self.current_index])))
        self.statusBar().showMessage('播放 --> %s' % self.music_file)
        self.played.play()

    def pushButton_2_click(self):
        """播放/暂停"""
        for m in self.music_path:
            self.playlist.addMedia(QtMultimedia.QMediaContent(QtCore.QUrl.fromLocalFile(m)))
        # self.playlist.setPlaybackMode(QtMultimedia.QMediaPlaylist.Loop)
        self.playlist.setCurrentIndex(self.current_index)
        if self.pushButton_2.status == 0:
            self.pushButton_2.setStyleSheet("border-image: url(:/qrc_files/pause.png);")
            self.pushButton_2.status = 1
            self.statusBar().showMessage('播放 --> %s' % music_files[self.playlist.currentIndex()]) # TODO 循环时不显示歌名
            self.played.play()

        elif self.pushButton_2.status == 1:
            self.pushButton_2.setStyleSheet("border-image: url(:/qrc_files/play.png);")
            self.pushButton_2.status = 0
            self.statusBar().showMessage('暂停')   # TODO 暂停再播放重新开始播放这首歌，不是从暂停播放进度那刻接着播放
            self.played.pause()
        else:
            self.statusBar().showMessage('未知')

    def pushButton_3_click(self):
        """下一曲"""
        # self.current_index += 1 if self.current_index != (len(music_files) - 1) else 0
        self.current_index = self.playlist.currentIndex()
        self.current_index += 1 if self.current_index != (len(music_files) - 1) else 0

        self.music_file = music_files[self.current_index]
        self.music_path = music_dir + '\\' + self.music_file
        self.playlist.setCurrentIndex(self.current_index)
        # self.played.setMedia(QtMultimedia.QMediaContent(QtCore.QUrl.fromLocalFile(music_files[self.current_index])))
        self.statusBar().showMessage('播放 --> %s' % self.music_file)
        self.played.play()

    def keyPressEvent(self, e):  # 替换事件处理器函数
        if e.key() == QtCore.Qt.Key_Q:  # 按下q退出程序
            self.close()

if __name__ == '__main__':
    app = QtWidgets.QApplication(sys.argv)
    player = MyPlayer()
    player.move(1000, 600)
    player.show()
    sys.exit(app.exec_())

　　music_datas目录放了一些自己喜欢的歌：

　　

　　PyCharm配置QtDesigner扩展工具，可参考这篇博文~