按下保存按钮pyqt5后关闭第二个小部件

Question

我正在编写一个应用程序，其中主窗口小部件窗口打开第二个窗口小部件窗口，在第二个窗口小部件窗口中，我从用户那里获取一些输入并点击保存按钮，第二个窗口小部件窗口应该将数据保存到 xml 文件中并且应该关闭但第二个窗口没有关闭。 我尝试了来自谷歌的大部分东西，比如self.close(), self.destroy(),self.hide() self.window().hide(), self.window().destroy()，它们都不起作用。

我不想这样做sys.exit()，因为这是关闭完整的应用程序，但只需在单击保存按钮后关闭 secondWidgetWindow，以便用户可以在第一个小部件窗口中执行另一项工作。

下面是sn-p：

FirstWidgetWindow.py

from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_firstWidgetWindow(QtWidgets.QMainWindow):
    def __init__(self,firstWidgetWindow):
        super().__init__()
        self.setupUi(firstWidgetWindow)

    def setupUi(self, firstWidgetWindow):
        ### code to create Button ###
        self.btnOpenNewWidgetWindow.clicked.connect(self.openNewWindow)

    def openNewWindow(self):
        self.secondWidgetWindow = QtWidgets.QWidget()
        self.ui = Ui_secondWidgetWindow()
        self.ui.setupUi(self.secondWidgetWindow)
        self.secondWidgetWindow.show()
if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    firstWidgetWindow = QtWidgets.QWidget()
    ui = Ui_firstWidgetWindow(firstWidgetWindow)
    firstWidgetWindow.show()
    sys.exit(app.exec_())

secondWidgetWindow.py

class Ui_secondWidgetWindow(QtWidgets.QMainWindow):
    def __init__(self):
        super().__init__()

    def setupUi(self, secondWidgetWindow):
        ### creating line edit to take input from user
        ### creating save button

        self.btnSave.clicked.connect(self.saveUserInput)

    def saveUserInput(self):
        ## saving user inputs in xml file
        self.close()  ## here i needs to close this window.

Answer 1

按下保存按钮后关闭第二个小部件：

self.secondWidgetWindow.hide()

试试看：

from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_secondWidgetWindow(QtWidgets.QMainWindow):
    def __init__(self):
        super().__init__()
        self.secondWidgetWindow = None

    def setupUi(self, secondWidgetWindow):
        self.secondWidgetWindow = secondWidgetWindow
        ### creating line edit to take input from user
        self.line_edit = QtWidgets.QLineEdit(secondWidgetWindow)
        self.line_edit.setGeometry(20, 20, 300, 20)

        ### creating save button
        self.btnSave = QtWidgets.QPushButton('save', secondWidgetWindow)
        self.btnSave.setGeometry(50, 50, 100, 50)
        self.btnSave.clicked.connect(self.saveUserInput)

    def saveUserInput(self):
        ## saving user inputs in xml file
        #self.close()  ## here i needs to close this window.
        self.secondWidgetWindow.hide()
        QtWidgets.QMessageBox.information(self, "SAVE",
                                        "saving user inputs in xml file")


class Ui_firstWidgetWindow(QtWidgets.QMainWindow):
    def __init__(self,firstWidgetWindow):
        super().__init__()

        self.setupUi(firstWidgetWindow)

    def setupUi(self, firstWidgetWindow):
        ### code to create Button ###
        self.btnOpenNewWidgetWindow = QtWidgets.QPushButton('OpenNewWidgetWindow', firstWidgetWindow)
        self.btnOpenNewWidgetWindow.setGeometry(50, 100, 300, 50)
        self.btnOpenNewWidgetWindow.clicked.connect(self.openNewWindow)

    def openNewWindow(self):
        self.secondWidgetWindow = QtWidgets.QWidget()
        self.ui = Ui_secondWidgetWindow()
        self.ui.setupUi(self.secondWidgetWindow)
        self.secondWidgetWindow.show()

if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    firstWidgetWindow = QtWidgets.QWidget()
    ui = Ui_firstWidgetWindow(firstWidgetWindow)
    firstWidgetWindow.setGeometry(700, 250, 400, 200)
    firstWidgetWindow.show()
    sys.exit(app.exec_())