我试图弄清楚如何在基于PyQt5桌面的应用程序中有效地管理多个页面。 例如：我有2页1）主页2）订单输入
在MainPage上，单击Order Button->创建Order页面的新实例并显示Order（主窗口）页面+隐藏MainPage
在“订购页面”上，单击“主页”按钮->这应该显示旧的MainPage。 该怎么做？我可以创建新实例并显示，但不能访问以前的实例。
我注意到一个使用QStackWidget的示例，但找不到适合我的示例。
有什么方法可以使用QStackWidget实现示例吗？
main.py
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QApplication, QMainWindow
import sys
from view.mainwindow import Ui_MainWindow
from view.ui_op_MainWindow import Ui_op_MainWindow
class Main(QMainWindow, Ui_MainWindow):
def __init__(self, parent=None):
super(Main, self).__init__(parent)
self.setupUi(self)
self.mp_orderPushButton.clicked.connect(self.openOrderPage)
def openOrderPage(self):
self.orderWindow = QtWidgets.QMainWindow()
self.ui = Ui_op_MainWindow()
self.ui.setupUi(self.orderWindow)
mp_window.hide()
self.orderWindow.show()
if __name__ == '__main__':
app = QApplication(sys.argv)
mp_window = Main()
mp_window.show()
sys.exit(app.exec_())
** mainWindow.py **
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(594, 421)
self.centralWidget = QtWidgets.QWidget(MainWindow)
self.centralWidget.setObjectName("centralWidget")
self.mp_entryFrame = QtWidgets.QFrame(self.centralWidget)
self.mp_entryFrame.setGeometry(QtCore.QRect(40, 40, 174, 181))
self.mp_entryFrame.setFrameShape(QtWidgets.QFrame.StyledPanel)
self.mp_entryFrame.setFrameShadow(QtWidgets.QFrame.Raised)
self.mp_entryFrame.setObjectName("mp_entryFrame")
self.verticalLayoutWidget = QtWidgets.QWidget(self.mp_entryFrame)
self.verticalLayoutWidget.setGeometry(QtCore.QRect(30, 10, 114, 161))
self.verticalLayoutWidget.setObjectName("verticalLayoutWidget")
self.mp_entryVerticalLayout = QtWidgets.QVBoxLayout(self.verticalLayoutWidget)
self.mp_entryVerticalLayout.setContentsMargins(11, 11, 11, 11)
self.mp_entryVerticalLayout.setSpacing(6)
self.mp_entryVerticalLayout.setObjectName("mp_entryVerticalLayout")
self.mp_entryLabel = QtWidgets.QLabel(self.verticalLayoutWidget)
self.mp_entryLabel.setObjectName("mp_entryLabel")
self.mp_entryVerticalLayout.addWidget(self.mp_entryLabel, 0, QtCore.Qt.AlignHCenter)
self.mp_orderPushButton = QtWidgets.QPushButton(self.verticalLayoutWidget)
self.mp_orderPushButton.setObjectName("mp_orderPushButton")
self.mp_entryVerticalLayout.addWidget(self.mp_orderPushButton)
self.mp_dispatchPushButton = QtWidgets.QPushButton(self.verticalLayoutWidget)
self.mp_dispatchPushButton.setObjectName("mp_dispatchPushButton")
self.mp_entryVerticalLayout.addWidget(self.mp_dispatchPushButton)
self.mp_millCashPushButton = QtWidgets.QPushButton(self.verticalLayoutWidget)
self.mp_millCashPushButton.setObjectName("mp_millCashPushButton")
self.mp_entryVerticalLayout.addWidget(self.mp_millCashPushButton)
self.mp_pCashPushButton = QtWidgets.QPushButton(self.verticalLayoutWidget)
self.mp_pCashPushButton.setObjectName("mp_pCashPushButton")
self.mp_entryVerticalLayout.addWidget(self.mp_pCashPushButton)
MainWindow.setCentralWidget(self.centralWidget)
self.menuBar = QtWidgets.QMenuBar(MainWindow)
self.menuBar.setGeometry(QtCore.QRect(0, 0, 594, 22))
self.menuBar.setObjectName("menuBar")
MainWindow.setMenuBar(self.menuBar)
self.mainToolBar = QtWidgets.QToolBar(MainWindow)
self.mainToolBar.setObjectName("mainToolBar")
MainWindow.addToolBar(QtCore.Qt.TopToolBarArea, self.mainToolBar)
self.statusBar = QtWidgets.QStatusBar(MainWindow)
self.statusBar.setObjectName("statusBar")
MainWindow.setStatusBar(self.statusBar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.mp_entryLabel.setText(_translate("MainWindow", "Entry"))
self.mp_orderPushButton.setText(_translate("MainWindow", "Order"))
self.mp_dispatchPushButton.setText(_translate("MainWindow", "Dispatch"))
self.mp_millCashPushButton.setText(_translate("MainWindow", "Mill Cash"))
self.mp_pCashPushButton.setText(_translate("MainWindow", "Party Cash"))
** ui_op_MainWindow **
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_op_MainWindow(object):
def setupUi(self, op_MainWindow):
op_MainWindow.setObjectName("op_MainWindow")
op_MainWindow.resize(696, 444)
self.op_centralwidget = QtWidgets.QWidget(op_MainWindow)
self.op_centralwidget.setObjectName("op_centralwidget")
self.op_homeButton = QtWidgets.QPushButton(self.op_centralwidget)
self.op_homeButton.setGeometry(QtCore.QRect(570, 10, 114, 32))
self.op_homeButton.setObjectName("op_homeButton")
self.formLayoutWidget = QtWidgets.QWidget(self.op_centralwidget)
self.formLayoutWidget.setGeometry(QtCore.QRect(30, 50, 571, 321))
self.formLayoutWidget.setObjectName("formLayoutWidget")
self.op_formLayout = QtWidgets.QFormLayout(self.formLayoutWidget)
self.op_formLayout.setContentsMargins(0, 0, 0, 0)
self.op_formLayout.setObjectName("op_formLayout")
self.op_dateLabel = QtWidgets.QLabel(self.formLayoutWidget)
self.op_dateLabel.setObjectName("op_dateLabel")
self.op_formLayout.setWidget(0, QtWidgets.QFormLayout.LabelRole, self.op_dateLabel)
self.op_dateLineEdit = QtWidgets.QLineEdit(self.formLayoutWidget)
self.op_dateLineEdit.setObjectName("op_dateLineEdit")
self.op_formLayout.setWidget(0, QtWidgets.QFormLayout.FieldRole, self.op_dateLineEdit)
self.op_millNameLabel = QtWidgets.QLabel(self.formLayoutWidget)
self.op_millNameLabel.setObjectName("op_millNameLabel")
self.op_formLayout.setWidget(1, QtWidgets.QFormLayout.LabelRole, self.op_millNameLabel)
self.op_millNameComboBox = QtWidgets.QComboBox(self.formLayoutWidget)
self.op_millNameComboBox.setObjectName("op_millNameComboBox")
self.op_millNameComboBox.addItem("")
self.op_millNameComboBox.addItem("")
self.op_millNameComboBox.addItem("")
self.op_formLayout.setWidget(1, QtWidgets.QFormLayout.FieldRole, self.op_millNameComboBox)
self.op_partyNameLabel = QtWidgets.QLabel(self.formLayoutWidget)
self.op_partyNameLabel.setObjectName("op_partyNameLabel")
self.op_formLayout.setWidget(2, QtWidgets.QFormLayout.LabelRole, self.op_partyNameLabel)
self.op_partyNameComboBox = QtWidgets.QComboBox(self.formLayoutWidget)
self.op_partyNameComboBox.setObjectName("op_partyNameComboBox")
self.op_partyNameComboBox.addItem("")
self.op_partyNameComboBox.addItem("")
self.op_formLayout.setWidget(2, QtWidgets.QFormLayout.FieldRole, self.op_partyNameComboBox)
self.op_quantityLabel = QtWidgets.QLabel(self.formLayoutWidget)
self.op_quantityLabel.setObjectName("op_quantityLabel")
self.op_formLayout.setWidget(3, QtWidgets.QFormLayout.LabelRole, self.op_quantityLabel)
self.op_quantityLineEdit = QtWidgets.QLineEdit(self.formLayoutWidget)
self.op_quantityLineEdit.setObjectName("op_quantityLineEdit")
self.op_formLayout.setWidget(3, QtWidgets.QFormLayout.FieldRole, self.op_quantityLineEdit)
self.op_rateLabel = QtWidgets.QLabel(self.formLayoutWidget)
self.op_rateLabel.setObjectName("op_rateLabel")
self.op_formLayout.setWidget(4, QtWidgets.QFormLayout.LabelRole, self.op_rateLabel)
self.op_rateLineEdit = QtWidgets.QLineEdit(self.formLayoutWidget)
self.op_rateLineEdit.setObjectName("op_rateLineEdit")
self.op_formLayout.setWidget(4, QtWidgets.QFormLayout.FieldRole, self.op_rateLineEdit)
self.op_etcLabel = QtWidgets.QLabel(self.formLayoutWidget)
self.op_etcLabel.setObjectName("op_etcLabel")
self.op_formLayout.setWidget(5, QtWidgets.QFormLayout.LabelRole, self.op_etcLabel)
self.op_etcLineEdit = QtWidgets.QLineEdit(self.formLayoutWidget)
self.op_etcLineEdit.setObjectName("op_etcLineEdit")
self.op_formLayout.setWidget(5, QtWidgets.QFormLayout.FieldRole, self.op_etcLineEdit)
op_MainWindow.setCentralWidget(self.op_centralwidget)
self.statusbar = QtWidgets.QStatusBar(op_MainWindow)
self.statusbar.setObjectName("statusbar")
op_MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(op_MainWindow)
QtCore.QMetaObject.connectSlotsByName(op_MainWindow)
self.op_homeButton.clicked.connect(self.op_homeBtnClicked())
def retranslateUi(self, op_MainWindow):
_translate = QtCore.QCoreApplication.translate
op_MainWindow.setWindowTitle(_translate("op_MainWindow", "MainWindow"))
self.op_homeButton.setText(_translate("op_MainWindow", "Home"))
self.op_dateLabel.setText(_translate("op_MainWindow", "Date"))
self.op_millNameLabel.setText(_translate("op_MainWindow", "Mill Name"))
self.op_millNameComboBox.setItemText(0, _translate("op_MainWindow", "Select Mill"))
self.op_millNameComboBox.setItemText(1, _translate("op_MainWindow", "Abc"))
self.op_millNameComboBox.setItemText(2, _translate("op_MainWindow", "Def"))
self.op_partyNameLabel.setText(_translate("op_MainWindow", "Party Name"))
self.op_partyNameComboBox.setItemText(0, _translate("op_MainWindow", "Select Party"))
self.op_partyNameComboBox.setItemText(1, _translate("op_MainWindow", "ppppppp"))
self.op_quantityLabel.setText(_translate("op_MainWindow", "Quantity"))
self.op_rateLabel.setText(_translate("op_MainWindow", "Rate"))
self.op_etcLabel.setText(_translate("op_MainWindow", "Etc"))