pyqt5 登錄界面的實現模板（加強版2）

說明

本例，在登錄界面第二版的基礎上，增加了登錄界面的記住密碼功能和自動登錄功能。

在實現這兩個功能的時候，需要用到QSettings這個知識點。QSettings用起來還是很方便，很簡單的，不細說了，直接看代碼吧。

保存登錄信息

    # 保存登錄信息
    def save_login_info(self):
        settings = QSettings("config.ini", QSettings.IniFormat)
        settings.setValue("account",self.lineEdit_account.text())
        settings.setValue("password", self.lineEdit_password.text())
        settings.setValue("remeberpassword", self.checkBox_remeberpassword.isChecked())
        settings.setValue("autologin", self.checkBox_autologin.isChecked())

初始化登錄信息

    # 初始化登錄信息
    def init_login_info(self):
        settings = QSettings("config.ini", QSettings.IniFormat)
        the_account =settings.value("account")
        the_password = settings.value("password")
        the_remeberpassword = settings.value("remeberpassword")
        the_autologin = settings.value("autologin")
        ########
        self.lineEdit_account.setText(the_account)
        if the_remeberpassword=="true" or  the_remeberpassword==True:
            self.checkBox_remeberpassword.setChecked(True)
            self.lineEdit_password.setText(the_password)

        if the_autologin=="true" or  the_autologin==True:
            self.checkBox_autologin.setChecked(True)

        if the_autologin == "true":   #防止註銷時，自動登錄
            threading.Timer(1, self.on_pushButton_enter_clicked).start()
            #self.on_pushButton_enter_clicked()

完整代碼

【如下代碼，完全複製，直接運行，即可使用】

import sys
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
from PyQt5.QtGui import *
import threading
################################################
#######創建主窗口
################################################
class MainWindow(QMainWindow):
    windowList = []
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.setWindowTitle('主界面')
        self.showMaximized()

        # 創建菜單欄
        self.createMenus()

    def createMenus(self):
        # 創建動作 註銷
        self.printAction1 = QAction(self.tr("註銷"), self)
        self.printAction1.triggered.connect(self.on_printAction1_triggered)

        # 創建動作 退出
        self.printAction2 = QAction(self.tr("退出"), self)
        self.printAction2.triggered.connect(self.on_printAction2_triggered)

        # 創建菜單，添加動作
        self.printMenu = self.menuBar().addMenu(self.tr("註銷和退出"))
        self.printMenu.addAction(self.printAction1)
        self.printMenu.addAction(self.printAction2)




    # 動作一：註銷
    def on_printAction1_triggered(self):
        self.close()
        dialog = logindialog()
        if  dialog.exec_()==QDialog.Accepted:
            the_window = MainWindow()
            self.windowList.append(the_window)    #這句一定要寫，不然無法重新登錄
            the_window.show()



    # 動作二：退出
    def on_printAction2_triggered(self):
        self.close()



    # 關閉界面觸發事件
    def closeEvent(self, event):
        print(999999999)
        pass

################################################
#######對話框
################################################
class logindialog(QDialog):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.setWindowTitle('登錄界面')
        self.resize(200, 200)
        self.setFixedSize(self.width(), self.height())
        self.setWindowFlags(Qt.WindowCloseButtonHint)

        ###### 設置界面控件
        self.frame = QFrame(self)
        self.verticalLayout = QVBoxLayout(self.frame)

        self.lineEdit_account = QLineEdit()
        self.lineEdit_account.setPlaceholderText("請輸入賬號")
        self.verticalLayout.addWidget(self.lineEdit_account)

        self.lineEdit_password = QLineEdit()
        self.lineEdit_password.setPlaceholderText("請輸入密碼")
        self.verticalLayout.addWidget(self.lineEdit_password)

        self.checkBox_remeberpassword = QCheckBox()
        self.checkBox_remeberpassword.setText("記住密碼")
        self.verticalLayout.addWidget(self.checkBox_remeberpassword)

        self.checkBox_autologin = QCheckBox()
        self.checkBox_autologin.setText("自動登錄")
        self.verticalLayout.addWidget(self.checkBox_autologin)


        self.pushButton_enter = QPushButton()
        self.pushButton_enter.setText("確定")
        self.verticalLayout.addWidget(self.pushButton_enter)

        self.pushButton_quit = QPushButton()
        self.pushButton_quit.setText("取消")
        self.verticalLayout.addWidget(self.pushButton_quit)

        ###### 綁定按鈕事件
        self.pushButton_enter.clicked.connect(self.on_pushButton_enter_clicked)
        self.pushButton_quit.clicked.connect(QCoreApplication.instance().quit)


        ####初始化登錄信息
        self.init_login_info()



    def on_pushButton_enter_clicked(self):
        # 賬號判斷
        if self.lineEdit_account.text() == "":
            return

        # 密碼判斷
        if self.lineEdit_password.text() == "":
            return


        ####### 保存登錄信息
        self.save_login_info()

        # 通過驗證，關閉對話框並返回1
        self.accept()



    # 保存登錄信息
    def save_login_info(self):
        settings = QSettings("config.ini", QSettings.IniFormat)
        settings.setValue("account",self.lineEdit_account.text())
        settings.setValue("password", self.lineEdit_password.text())
        settings.setValue("remeberpassword", self.checkBox_remeberpassword.isChecked())
        settings.setValue("autologin", self.checkBox_autologin.isChecked())



    # 初始化登錄信息
    def init_login_info(self):
        settings = QSettings("config.ini", QSettings.IniFormat)
        the_account =settings.value("account")
        the_password = settings.value("password")
        the_remeberpassword = settings.value("remeberpassword")
        the_autologin = settings.value("autologin")
        ########
        self.lineEdit_account.setText(the_account)
        if the_remeberpassword=="true" or  the_remeberpassword==True:
            self.checkBox_remeberpassword.setChecked(True)
            self.lineEdit_password.setText(the_password)

        if the_autologin=="true" or  the_autologin==True:
            self.checkBox_autologin.setChecked(True)

        if the_autologin == "true":   #防止註銷時，自動登錄
            threading.Timer(1, self.on_pushButton_enter_clicked).start()
            #self.on_pushButton_enter_clicked()

################################################
#######程序入門
################################################
if __name__ == "__main__":
    app = QApplication(sys.argv)
    dialog = logindialog()
    if  dialog.exec_()==QDialog.Accepted:
        the_window = MainWindow()
        the_window.show()
        sys.exit(app.exec_())

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