如何通过有序，随机和重放来播放歌曲？

-1

我想制作三种可以调节歌曲的模型。
您可以看到on_finish()方法，这是我写的关于播放模式的方法。
这三种模式是ordered,random和replay。
但我得到了一些错误，歌曲不能遵循这些模式的发挥。
如何通过有序，随机和重放来播放歌曲？

例如，
歌曲列表：ABCDEFG，而现在是打
当我点击下令，将在第一播放下一首歌曲（B），然后播放接下来的第三首歌曲（E）。
但它应该首先播放歌曲B，然后播放歌曲C，而不是歌曲E.
而且随机发生的情况也是如此。
然后我试图打印（路径），我发现的代码将立即三次，最后晚上的时间.......

我不知道问题出在哪里执行，然后。

这是我的代码music_1.py。

#!/usr/bin/python 
# -*- coding: utf-8 -*- 

# music_1.py 

import sys 
import random 
from PyQt4 import QtGui, QtCore 
from PyQt4 import phonon 
from music_ui import Ui_Form 

warmpath_list=[r"C:\Users\Jacky\Desktop\music_list\warm\song1.mp3", 
       r"C:\Users\Jacky\Desktop\music_list\warm\song2.mp3", 
       r"C:\Users\Jacky\Desktop\music_list\warm\song3.wma", 
       r"C:\Users\Jacky\Desktop\music_list\warm\song4.mp3", 
       r"C:\Users\Jacky\Desktop\music_list\warm\song5.mp3", 
       r"C:\Users\Jacky\Desktop\music_list\warm\song6.wma", 

funnypath_list=[r"C:\Users\Jacky\Desktop\music_list\funny\songa.wma",     
       r"C:\Users\Jacky\Desktop\music_list\funny\songb.wma", 
       r"C:\Users\Jacky\Desktop\music_list\funny\songc.wma ", 
       r"C:\Users\Jacky\Desktop\music_list\funny\songd.wma"] 

class Music(QtGui.QDialog): 
    def __init__(self, parent=None): 
     QtGui.QDialog.__init__(self, parent) 
     self.setWindowTitle('Player') 
     self.ui = Ui_Form() 
     self.ui.setupUi(self) 


     self.mediaObject = phonon.Phonon.MediaObject(self) 
     self.audioOutput = phonon.Phonon.AudioOutput(phonon.Phonon.MusicCategory, self) 
     phonon.Phonon.createPath(self.mediaObject, self.audioOutput) 
     self.ui.volumeSlider.setAudioOutput(self.audioOutput) 
     self.ui.seekSlider.setMediaObject(self.mediaObject) 
     self.mediaObject.tick.connect(self.tick) 

     self.timeLcd = QtGui.QLCDNumber(self) 
     self.timeLcd.display('00:00') 
     self.timeLcd.setGeometry(480, 330, 100, 50) 


     self.ui.listWidget.insertItem(0,"warm") 
     self.ui.listWidget.insertItem(1,"funny") 

     self.ui.listWidget_3.insertItem(0,"song1") 
     self.ui.listWidget_3.insertItem(1,"song2") 
     self.ui.listWidget_3.insertItem(2,"song3") 
     self.ui.listWidget_3.insertItem(3,"song4") 
     self.ui.listWidget_3.insertItem(4,"song5") 
     self.ui.listWidget_3.insertItem(5,"song6") 


     self.ui.listWidget_2.insertItem(0,"songa")  
     self.ui.listWidget_2.insertItem(1,"songb") 
     self.ui.listWidget_2.insertItem(2,"songc") 
     self.ui.listWidget_2.insertItem(3,"songd") 

     self.connect(self.ui.listWidget,QtCore.SIGNAL("currentRowChanged(int)"),self.ui.stackedWidget,QtCore.SLOT("setCurrentIndex(int)")) 
     self.connect(self.ui.listWidget_2,QtCore.SIGNAL("currentRowChanged(int)"),self.openaudio) 
     self.connect(self.ui.listWidget_3,QtCore.SIGNAL("currentRowChanged(int)"),self.openaudio)  


     self.connect(self.ui.pushButton, QtCore.SIGNAL('clicked()'),self.mediaObject.pause) 
     self.connect(self.ui.pushButton_4, QtCore.SIGNAL('clicked()'),self.mediaObject.play) 
     self.connect(self.ui.pushButton_5, QtCore.SIGNAL('clicked()'),self.mediaObject.stop) 
     self.connect(self.ui.pushButton_2, QtCore.SIGNAL('clicked()'),self.m_previous) 
     self.connect(self.ui.pushButton_3, QtCore.SIGNAL('clicked()'),self.m_next) 


     popmenu = QtGui.QMenu(self.ui.pushButton_6) 
     group = QtGui.QActionGroup(self.ui.pushButton_6) 
     group.setExclusive(True) 

     for i in range(1, 4): 
      if i==1: 
       action = group.addAction('oordered') 
       action.setCheckable(True) 
       #action.setChecked(True) 

      if i==2: 
       action = group.addAction('replay') 
       action.setCheckable(True) 

      if i==3: 
       action = group.addAction('random') 
       action.setCheckable(True) 

      popmenu.addAction(action) 
     self.ui.pushButton_6.setMenu(popmenu) 

     group.triggered.connect(self.sortedEvent) # sortedEvent() 



    def tick(self, time): 
     displayTime = QtCore.QTime(0, (time/60000) % 60, (time/1000) % 60) 
     self.timeLcd.display(displayTime.toString('mm:ss')) 

    def openaudio(self,path):  
     self.connect(self.ui.listWidget_2,QtCore.SIGNAL('currentTextChanged(QString)'),self.ui.label_4,QtCore.SLOT('setText(QString)')) 
     self.connect(self.ui.listWidget_3,QtCore.SIGNAL('currentTextChanged(QString)'),self.ui.label_4,QtCore.SLOT('setText(QString)')) 

     if self.ui.stackedWidget.currentIndex()==0: 
      index1=self.ui.listWidget_3.currentRow() 
      path=warmpath_list[index1]        

     if self.ui.stackedWidget.currentIndex()==1: 
      index2=self.ui.listWidget_2.currentRow() 
      path=funnypath_list[index2] 

     self.mediaObject.setCurrentSource(phonon.Phonon.MediaSource(path)) 
     self.mediaObject.play() 
     self.mediaObject.finished.connect(self.on_finish) 


    def m_next(self): # to play the next song 
     if self.ui.stackedWidget.currentIndex()==0: 
      index1=self.ui.listWidget_3.currentRow() 
      if index1==len(warmpath_list)-1: 
       path=warmpath_list[0] 
       self.ui.listWidget_3.setCurrentRow(0) 
      else: 
       path=warmpath_list[index1+1] 
       self.ui.listWidget_3.setCurrentRow(index1+1)               
      print(path) 
      self.openaudio(path)  

     if self.ui.stackedWidget.currentIndex()==1: 
      index2=self.ui.listWidget_2.currentRow() 
      if index2==len(funnypath_list)-1: 
       path=funnypath_list[0] 
       self.ui.listWidget_2.setCurrentRow(0)      
      else: 
       path=funnypath_list[index2+1]     
       self.ui.listWidget_2.setCurrentRow(index2+1) 
      self.openaudio(path) 


    def m_previous(self): # to play the previous song 
     if self.ui.stackedWidget.currentIndex()==0: 
      index1=self.ui.listWidget_3.currentRow() 
      if index1==len(warmpath_list)-len(warmpath_list): 
       path=warmpath_list[len(warmpath_list)-1] 
       self.ui.listWidget_3.setCurrentRow(len(warmpath_list)-1) 
      else: 
       path=warmpath_list[index1-1]  
       self.ui.listWidget_3.setCurrentRow(index1-1) 
      print(path)  
      self.openaudio(path) 

     if self.ui.stackedWidget.currentIndex()==1: 
      index2=self.ui.listWidget_2.currentRow() 
      if index2==len(funnypath_list)-len(funnypath_list): 
       path=funnypath_list[len(funnypath_list)-1] 
       self.ui.listWidget_2.setCurrentRow(len(funnypath_list)-1) 
      else: 
       path=funnypath_list[index2-1]  
       self.ui.listWidget_2.setCurrentRow(index2-1) 
      print(path)  
      self.openaudio(path) 

    def sortedEvent(self,action):  
     self.whatToDoNext=action.text() 

    def on_finish(self): 
     if self.whatToDoNext=="ordered":  # Order of play 
      if self.ui.stackedWidget.currentIndex()==0: 
       index1=self.ui.listWidget_3.currentRow() 
       if index1==len(warmpath_list)-1: 
        path=warmpath_list[0] 
        self.ui.listWidget_3.setCurrentRow(0) 
       else: 
        path=warmpath_list[index1+1] 
        self.ui.listWidget_3.setCurrentRow(index1+1)               
       print(path) 
       self.openaudio(path) 
      if self.ui.stackedWidget.currentIndex()==1: 
       index2=self.ui.listWidget_2.currentRow() 
       if index2==len(funnypath_list)-1: 
        path=funnypath_list[0] 
        self.ui.listWidget_2.setCurrentRow(0)      
       else: 
        path=funnypath_list[index2+1]     
        self.ui.listWidget_2.setCurrentRow(index2+1) 
       self.openaudio(path) 


     elif self.whatToDoNext=="random": # random of play 
      if self.ui.stackedWidget.currentIndex()==0: 
       path = random.choice(warmpath_list) 
       self.ui.listWidget_3.setCurrentRow(warmpath_list.index(path)) 
       print(path) 
       self.openaudio(path) 

      if self.ui.stackedWidget.currentIndex()==1: 
       path = random.choice(funnypath_list) 
       self.ui.listWidget_2.setCurrentRow(funnypath_list.index(path)) 
       self.openaudio(path) 

     else: # replay 
      self.mediaObject.stop() 
      self.mediaObject.play() 

if __name__ == "__main__": 
    app = QtGui.QApplication(sys.argv) 
    myapp = Music() 
    myapp.show() 
    sys.exit(app.exec_())

这里是我的music_ui .py

from PyQt4 import QtCore, QtGui 

try: 
    _fromUtf8 = QtCore.QString.fromUtf8 
except AttributeError: 
    def _fromUtf8(s): 
     return s 

try: 
    _encoding = QtGui.QApplication.UnicodeUTF8 
    def _translate(context, text, disambig): 
     return QtGui.QApplication.translate(context, text, disambig, _encoding) 
except AttributeError: 
    def _translate(context, text, disambig): 
     return QtGui.QApplication.translate(context, text, disambig) 

class Ui_Form(object): 
    def setupUi(self, Form): 
     Form.setObjectName(_fromUtf8("Form")) 
     Form.resize(600, 400) 
     self.seekSlider = phonon.Phonon.SeekSlider(Form) 
     self.seekSlider.setGeometry(QtCore.QRect(230, 250, 361, 20)) 
     self.seekSlider.setObjectName(_fromUtf8("seekSlider")) 
     self.volumeSlider = phonon.Phonon.VolumeSlider(Form) 
     self.volumeSlider.setGeometry(QtCore.QRect(20, 360, 151, 22)) 
     self.volumeSlider.setObjectName(_fromUtf8("volumeSlider")) 
     self.pushButton = QtGui.QPushButton(Form) 
     self.pushButton.setGeometry(QtCore.QRect(420, 280, 40, 40)) 
     font = QtGui.QFont() 
     font.setFamily(_fromUtf8("Agency FB")) 
     font.setBold(True) 
     font.setWeight(75) 
     self.pushButton.setFont(font) 
     self.pushButton.setObjectName(_fromUtf8("pushButton")) 
     self.pushButton_2 = QtGui.QPushButton(Form) 
     self.pushButton_2.setGeometry(QtCore.QRect(300, 280, 40, 40)) 
     font = QtGui.QFont() 
     font.setFamily(_fromUtf8("Agency FB")) 
     font.setPointSize(18) 
     font.setBold(True) 
     font.setWeight(75) 
     self.pushButton_2.setFont(font) 
     self.pushButton_2.setObjectName(_fromUtf8("pushButton_2")) 
     self.pushButton_3 = QtGui.QPushButton(Form) 
     self.pushButton_3.setGeometry(QtCore.QRect(540, 280, 40, 40)) 
     font = QtGui.QFont() 
     font.setFamily(_fromUtf8("Agency FB")) 
     font.setPointSize(18) 
     font.setBold(True) 
     font.setWeight(75) 
     self.pushButton_3.setFont(font) 
     self.pushButton_3.setObjectName(_fromUtf8("pushButton_3")) 
     self.pushButton_4 = QtGui.QPushButton(Form) 
     self.pushButton_4.setGeometry(QtCore.QRect(480, 280, 40, 40)) 
     font = QtGui.QFont() 
     font.setFamily(_fromUtf8("Agency FB")) 
     font.setPointSize(10) 
     font.setBold(True) 
     font.setWeight(75) 
     self.pushButton_4.setFont(font) 
     self.pushButton_4.setObjectName(_fromUtf8("pushButton_4")) 
     self.pushButton_5 = QtGui.QPushButton(Form) 
     self.pushButton_5.setGeometry(QtCore.QRect(360, 280, 40, 40)) 
     font = QtGui.QFont() 
     font.setFamily(_fromUtf8("Agency FB")) 
     font.setPointSize(9) 
     font.setBold(True) 
     font.setWeight(75) 
     self.pushButton_5.setFont(font) 
     self.pushButton_5.setObjectName(_fromUtf8("pushButton_5")) 
     self.label_3 = QtGui.QLabel(Form) 
     self.label_3.setGeometry(QtCore.QRect(490, 30, 81, 71)) 
     font = QtGui.QFont() 
     font.setFamily(_fromUtf8("Agency FB")) 
     font.setPointSize(16) 
     self.label_3.setFont(font) 
     self.label_3.setFrameShape(QtGui.QFrame.StyledPanel) 
     self.label_3.setTextFormat(QtCore.Qt.AutoText) 
     self.label_3.setAlignment(QtCore.Qt.AlignCenter) 
     self.label_3.setObjectName(_fromUtf8("label_3")) 
     self.label_2 = QtGui.QLabel(Form) 
     self.label_2.setGeometry(QtCore.QRect(230, 60, 161, 61)) 
     font = QtGui.QFont() 
     font.setPointSize(12) 
     font.setBold(True) 
     font.setWeight(75) 
     self.label_2.setFont(font) 
     self.label_2.setObjectName(_fromUtf8("label_2")) 
     self.label_4 = QtGui.QLabel(Form) 
     self.label_4.setGeometry(QtCore.QRect(230, 130, 341, 31)) 
     font = QtGui.QFont() 
     font.setPointSize(18) 
     font.setBold(True) 
     font.setWeight(75) 
     self.label_4.setFont(font) 
     self.label_4.setObjectName(_fromUtf8("label_4")) 
     self.groupBox = QtGui.QGroupBox(Form) 
     self.groupBox.setGeometry(QtCore.QRect(10, 30, 201, 321)) 
     font = QtGui.QFont() 
     font.setPointSize(12) 
     font.setBold(True) 
     font.setWeight(75) 
     self.groupBox.setFont(font) 
     self.groupBox.setAlignment(QtCore.Qt.AlignLeading|QtCore.Qt.AlignLeft|QtCore.Qt.AlignVCenter) 
     self.groupBox.setFlat(False) 
     self.groupBox.setCheckable(False) 
     self.groupBox.setObjectName(_fromUtf8("groupBox")) 
     self.listWidget = QtGui.QListWidget(self.groupBox) 
     self.listWidget.setGeometry(QtCore.QRect(10, 30, 171, 51)) 
     self.listWidget.setFrameShape(QtGui.QFrame.NoFrame) 
     self.listWidget.setFrameShadow(QtGui.QFrame.Plain) 
     self.listWidget.setViewMode(QtGui.QListView.ListMode) 
     self.listWidget.setObjectName(_fromUtf8("listWidget")) 
     self.stackedWidget = QtGui.QStackedWidget(self.groupBox) 
     self.stackedWidget.setGeometry(QtCore.QRect(10, 90, 181, 221)) 
     self.stackedWidget.setFrameShape(QtGui.QFrame.StyledPanel) 
     self.stackedWidget.setObjectName(_fromUtf8("stackedWidget")) 
     self.page = QtGui.QWidget() 
     self.page.setObjectName(_fromUtf8("page")) 
     self.listWidget_3 = QtGui.QListWidget(self.page) 
     self.listWidget_3.setGeometry(QtCore.QRect(0, 0, 181, 221)) 
     self.listWidget_3.setFrameShape(QtGui.QFrame.NoFrame) 
     self.listWidget_3.setObjectName(_fromUtf8("listWidget_3")) 
     self.stackedWidget.addWidget(self.page) 
     self.page_2 = QtGui.QWidget() 
     self.page_2.setObjectName(_fromUtf8("page_2")) 
     self.listWidget_2 = QtGui.QListWidget(self.page_2) 
     self.listWidget_2.setGeometry(QtCore.QRect(0, 0, 181, 221)) 
     self.listWidget_2.setFrameShape(QtGui.QFrame.NoFrame) 
     self.listWidget_2.setObjectName(_fromUtf8("listWidget_2")) 
     self.stackedWidget.addWidget(self.page_2) 
     self.pushButton_6 = QtGui.QPushButton(Form) 
     self.pushButton_6.setGeometry(QtCore.QRect(240, 280, 40, 40)) 
     font = QtGui.QFont() 
     font.setFamily(_fromUtf8("Agency FB")) 
     font.setPointSize(10) 
     font.setBold(True) 
     font.setWeight(75) 
     self.pushButton_6.setFont(font) 
     self.pushButton_6.setObjectName(_fromUtf8("pushButton_6")) 

     self.retranslateUi(Form) 
     self.stackedWidget.setCurrentIndex(0) 
     QtCore.QMetaObject.connectSlotsByName(Form) 

    def retranslateUi(self, Form): 
     Form.setWindowTitle(_translate("Form", "Form", None)) 
     self.pushButton.setText(_translate("Form", "| |", None)) 
     self.pushButton_2.setText(_translate("Form", "<", None)) 
     self.pushButton_3.setText(_translate("Form", ">", None)) 
     self.pushButton_4.setText(_translate("Form", "►", None)) 
     self.pushButton_5.setText(_translate("Form", "■", None)) 
     self.label_2.setText(_translate("Form", "Now is playing........", None)) 
     self.label_4.setText(_translate("Form", "m u s i c", None)) 
     self.groupBox.setTitle(_translate("Form", " music list ", None)) 
     self.pushButton_6.setText(_translate("Form", "▦", None)) 

from PyQt4 import phonon

来源

2015-07-22 Jacky Wu

有没有在你的代码中的至少两个问题代码：

在m_next()，你打电话self.ui.listWidget_3.setCurrentRow(0) 然后播放下一首歌与self.openaudio(path)

的问题是，你以前的 listWidget行改变的信号连接到播放歌曲的功能：

self.connect（self.ui.listWidget_3，QtCore.SIGNAL（ “currentRowChanged（INT）”），self.openaudio）

您打电话self.openaudio(path)两次，所以你得到一些意外的行为。
您连接到相同的插槽和信号的多个时间
在功能openaudio(self,path)，你连接到mediaObject.finishedself.on_finish。每次调用函数时，都会添加一个连接。
如果您尝试下面的例子中，你会看到，槽与按钮点击叫了两声：
```
button=QtGui.QPushButton("my button") 
button.clicked.connect(on_click) 
button.clicked.connect(on_click) 

def on_click(): 
    print("slot called") 
```

通常情况下，你只连接信号和槽在__init__功能，因为这个函数只被调用一次。

来源

2015-07-22 08:00:45 Mel

非常感谢:)））当我将“self.connect（self.mediaObject，QtCore.SIGNAL（'aboutToFinish（）'），self.on_finish）”移动到__init__函数时，它可以正常播放。但我不明白第一个问题。 –

顺便说一句，你知道如何在标签上显示歌名吗？我使用“self.ui（self.ui.listWidget_2，QtCore.SIGNAL（'currentTextChanged（QString）'），self.ui.label_4，QtCore.SLOT（'setText（QString）'））”来显示它。但是，当我第一次点击列表时，它不能显示在标签上。 –

如何通过有序，随机和重放来播放歌曲？

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