Python-pyqt5之RadioButton：单选按钮
RadioButton是单选按钮控件，它为用户提供两个或多个互斥选项组成的选项集，当用户选中某单选按钮时，同一组中的其他单选按钮不能同时选定。
任务目标：
输入用户名密码，选择登录角色，按回车键或点击登录可显示登录信息，点击退出，可退出程序
设计：
完整代码：
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QMessageBox
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(459, 308)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.lineEdit = QtWidgets.QLineEdit(self.centralwidget)
self.lineEdit.setGeometry(QtCore.QRect(200, 50, 113, 21))
self.lineEdit.setObjectName("lineEdit")
self.label = QtWidgets.QLabel(self.centralwidget)
self.label.setGeometry(QtCore.QRect(130, 50, 61, 21))
self.label.setObjectName("label")
self.label_2 = QtWidgets.QLabel(self.centralwidget)
self.label_2.setGeometry(QtCore.QRect(130, 90, 81, 21))
self.label_2.setObjectName("label_2")
self.lineEdit_2 = QtWidgets.QLineEdit(self.centralwidget)
self.lineEdit_2.setGeometry(QtCore.QRect(200, 90, 113, 21))
self.lineEdit_2.setObjectName("lineEdit_2")
self.lineEdit_2.setEchoMode(QtWidgets.QLineEdit.Password)
self.lineEdit_2.setValidator(QtGui.QIntValidator(10000000,99999999))
self.pushButton = QtWidgets.QPushButton(self.centralwidget)
self.pushButton.setGeometry(QtCore.QRect(130, 150, 81, 28))
self.pushButton.setObjectName("pushButton")
self.pushButton_2 = QtWidgets.QPushButton(self.centralwidget)
self.pushButton_2.setGeometry(QtCore.QRect(230, 150, 81, 28))
self.pushButton_2.setObjectName("pushButton_2")
self.radioButton = QtWidgets.QRadioButton(self.centralwidget)
self.radioButton.setGeometry(QtCore.QRect(140, 120, 81, 21))
self.radioButton.setObjectName("radioButton")
self.radioButton.setChecked(True) #设置管理员单选按钮默认选中
self.radioButton_2 = QtWidgets.QRadioButton(self.centralwidget)
self.radioButton_2.setGeometry(QtCore.QRect(220, 120, 91, 21))
self.radioButton_2.setObjectName("radioButton_2")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 459, 29))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
self.pushButton.clicked.connect(self.login)
self.pushButton_2.clicked.connect(MainWindow.close)
self.radioButton.toggled.connect(self.select)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
self.set_shortcut(MainWindow)
# 设置快捷键
def set_shortcut(self, MainWindow):
login_shortcut = QtWidgets.QShortcut(QtGui.QKeySequence(QtCore.Qt.Key_Return), MainWindow)
login_shortcut.activated.connect(self.login)
def login(self):
# 使用information()方法弹出信息提示框
QMessageBox.information(MainWindow, "登录信息", "用户名："+self.lineEdit.text()+" 密码："+self.lineEdit_2.text(), QMessageBox.Ok)
# 自定义槽函数，用来判断用户登录身份
def select(self):
if self.radioButton.isChecked(): # 判断是否为管理员登录
QMessageBox.information(MainWindow, "提示","您选择的是 管理员 登录", QMessageBox.Ok)
elif self.radioButton_2.isChecked(): # 判断是否为普通用户登录
QMessageBox.information(MainWindow, "提示", "您选择的是 普通用户 登录", QMessageBox.Ok)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.label.setText(_translate("MainWindow", "用户名："))
self.label_2.setText(_translate("MainWindow", "密 码："))
self.pushButton.setText(_translate("MainWindow", "登录"))
self.pushButton_2.setText(_translate("MainWindow", "退出"))
self.radioButton.setText(_translate("MainWindow", "管理员"))
self.radioButton_2.setText(_translate("MainWindow", "普通用户"))
import sys
if __name__ == '__main__':
app=QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())效果：
