PyQt5 implements interface jumping

There are very few tutorials about PyQt5 on the Internet, especially the interface jump. I have studied it for a long time, and I will share it with you.

First, the main interface

1  # -*- coding: utf-8 -*- 
2  
3  # Form implementation generated from reading ui file 'Form.ui' 
4  #
 5  # Created by: PyQt5 UI code generator 5.10.1 
6  #
 7  # WARNING! All changes made in this file will be lost! 
8 #It should be noted that the second one in the jump interface must use the QDialog class, not QWidget, I don't know why, pay special attention to
 9  from PyQt5 import QtCore, QtGui, QtWidgets
 10  from PyQt5. QtWidgets import QMainWindow, QApplication
 11  import Dialog1
 12  import Dialog2
13  import sys
 14  
15  
16  class Ui_Form(object): #This is the code generated by PyQt Designer, very simple, drag controls, generate ui files, and then convert UIC into py files
 17      def setupUi(self, Form):
 18          Form.setObjectName( " Form " )
 19          Form.resize(440, 310 )
 20          self.form = Form
 21          self.btn_d1 = QtWidgets.QPushButton(Form)
 22          self.btn_d1.setGeometry(QtCore.QRect(60, 140, 75 , 23 ))
 23          self.btn_d1.setObjectName( " btn_d1 " )
 24         self.btn_d2 = QtWidgets.QPushButton(Form)
25         self.btn_d2.setGeometry(QtCore.QRect(180, 140, 75, 23))
26         self.btn_d2.setObjectName("btn_d2")
27         self.btn_exit = QtWidgets.QPushButton(Form)
28         self.btn_exit.setGeometry(QtCore.QRect(310, 140, 75, 23))
29         self.btn_exit.setObjectName("btn_exit")
30 
31         self.retranslateUi(Form)
32         QtCore.QMetaObject.connectSlotsByName(Form)
33 
34     def retranslateUi(self, Form):
35         _translate = QtCore.QCoreApplication.translate
36         Form.setWindowTitle(_translate("Form", "Form"))
37         self.btn_d1.setText(_translate("Form", "Demo1"))
38         self.btn_d1.clicked.connect(self.jump_to_demo1)
39         self.btn_d2.setText(_translate("Form", "Demo2"))
40         self.btn_d2.clicked.connect(self.jump_to_demo2)
 41          self.btn_exit.setText(_translate( " Form " , " Exit " ))
 42          self.btn_exit.clicked.connect(self.exit)
 43  
44      def jump_to_demo1(self) : # This piece of attention is focused on jumping from the main interface to the Demo1 interface. The main interface is hidden. If the Demo interface is closed, the main interface process will trigger self.form.show() and the main interface will be displayed again.
 45          self.form.hide( ) #If there is no self.form.show() sentence, the program will be closed after closing the Demo1 interface
 46          form1 = QtWidgets.QDialog()
 47          ui = Dialog1.Ui_Dialog1()
 48          ui.setupUi(form1)
 49         form1.show()
50         form1.exec_()
51         self.form.show()
52 
53     def jump_to_demo2(self):
54         self.form.hide()
55         form2 = QtWidgets.QDialog()
56         ui = Dialog2.Ui_Dialog2()
57         ui.setupUi(form2)
58         form2.show()
59         form2.exec_()
60         self.form.show()
61 
62     def exit(self):
63         self.form.close()
64 
65 
66 if __name__ == "__main__":
67     app = QApplication(sys.argv)
68     form = QtWidgets.QWidget()
69     window = Ui_Form()
70     window.setupUi(form)
71     form.show()
72     sys.exit(app.exec_())

2. Jump interface Demo1

 1 # -*- coding: utf-8 -*-
 2 
 3 # Form implementation generated from reading ui file 'Dialog1.ui'
 4 #
 5 # Created by: PyQt5 UI code generator 5.10.1
 6 #
 7 # WARNING! All changes made in this file will be lost!
 8 
 9 from PyQt5 import QtCore, QtGui, QtWidgets
10 
11 class Ui_Dialog1(object):
12     def setupUi(self, Dialog1):
13         Dialog1.setObjectName("Dialog1")
14         Dialog1.resize(400, 300)
15         self.dialog=Dialog1
16         self.pushButton = QtWidgets.QPushButton(Dialog1)
17         self.pushButton.setGeometry(QtCore.QRect(140, 140, 75, 23))
18         self.pushButton.setObjectName("pushButton")
19 
20         self.retranslateUi(Dialog1)
21         QtCore.QMetaObject.connectSlotsByName(Dialog1)
22 
23     def retranslateUi(self, Dialog1):
24         _translate = QtCore.QCoreApplication.translate
25         Dialog1.setWindowTitle(_translate("Dialog1", "Dialog"))
26         self.pushButton.setText(_translate("Dialog1", "Jump to main"))
27         self.pushButton.clicked.connect(self.jump_to_main)
28 
29     def jump_to_main(self):
30         self.dialog.close()

3. Jump interface Demo2

 1 # -*- coding: utf-8 -*-
 2 
 3 # Form implementation generated from reading ui file 'Dialog2.ui'
 4 #
 5 # Created by: PyQt5 UI code generator 5.10.1
 6 #
 7 # WARNING! All changes made in this file will be lost!
 8 
 9 from PyQt5 import QtCore, QtGui, QtWidgets
10 from PyQt5.QtWidgets import QMainWindow, QDialog, QApplication
11 import sys
12 
13 
14 class Ui_Dialog2(object):
15     def setupUi(self, Dialog2):
16         Dialog2.setObjectName("Dialog2")
17         Dialog2.resize(400, 300)
18         self.dialog = Dialog2
19         self.pushButton = QtWidgets.QPushButton(Dialog2)
20         self.pushButton.setGeometry(QtCore.QRect(140, 160, 75, 23))
21         self.pushButton.setObjectName("pushButton")
22 
23         self.retranslateUi(Dialog2)
24         QtCore.QMetaObject.connectSlotsByName(Dialog2)
25 
26     def retranslateUi(self, Dialog2):
27         _translate = QtCore.QCoreApplication.translate
28         Dialog2.setWindowTitle(_translate("Dialog2", "Dialog"))
29         self.pushButton.setText(_translate("Dialog2", "Jump to main"))
30         self.pushButton.clicked.connect(self.go_main)
31 
32     def go_main(self):
33         self.dialog.close()
34 
35 if __name__ == "__main__":
36     app = QApplication(sys.argv)
37     form = QtWidgets.QDialog()
38     ui = Ui_Dialog2()
39     ui.setupUi(form)
40     form.show()
41     sys.exit(app.exec_())