PyQt5 designer 页面点击按钮跳转页面实现

目录

• 使用 designer 进行开发
• PyQt5 实现两个页面跳转
• PyQt5 实现多个页面跳转
• 补充：使用 designer 开发，页面跳转函数
• 不使用 designer 的页面跳转

from a_ui import Ui_MainWindow as A_Ui # a界面的库
from b_ui import Ui_MainWindow as B_Ui # b界面的库
from PyQt5 import QtCore, QtWidgets
import sys
class AUi(QtWidgets.QMainWindow, A_Ui):
    def __init__(self):
        super(AUi, self).__init__()
        self.setupUi(self)
class BUi(QtWidgets.QMainWindow, B_Ui):
    def __init__(self):
        super(BUi, self).__init__()
        self.setupUi(self)
if __name__ == '__main__':
    app = QtWidgets.QApplication(sys.argv)
    a = AUi()
    a.show()
    b = BUi()
    # button是你定义的按钮
    a.goButton.clicked.connect(
        lambda:{a.close(), b.show()}
       )
    sys.exit(app.exec_())

# 利用一个控制器来控制页面的跳转
class Controller:
    def __init__(self):
        pass
    def show_A(self):
        # 创建 A 窗口对象并显示
        # 关闭其余窗口对象
    def show_B(self):
        # 创建 B 窗口对象并显示
        # 关闭其余窗口对象
    def show_C(self):
        # 创建 C 窗口对象并显示
        # 关闭其余窗口对象

import sys
from PyQt5 import QtCore, QtWidgets, QtCore
# 导入 Qt designer 设计的页面
from hello import Ui_MainWindow as Hello_Ui 
from login import Ui_MainWindow as Login_Ui
from operate import Ui_MainWindow as Operate_Ui

# 主窗口
class HelloWindow(QtWidgets.QMainWindow, Hello_Ui):
    switch_window1 = QtCore.pyqtSignal() # 跳转信号
    switch_window2 = QtCore.pyqtSignal() # 跳转信号
    def __init__(self):
        super(HelloWindow, self).__init__()
        self.setupUi(self)
        self.queryButton.clicked.connect(self.goOperate)
        self.manageButton.clicked.connect(self.goLogin)
    def goLogin(self):
        self.switch_window1.emit()
    def goOperate(self):
        self.switch_window2.emit()
# 登录窗口
class LoginWindow(QtWidgets.QMainWindow, Login_Ui):
    def __init__(self):
        super(LoginWindow, self).__init__()
        self.setupUi(self)
# 操作窗口
class OperateWindow(QtWidgets.QMainWindow, Operate_Ui):
    def __init__(self):
        super(OperateWindow, self).__init__()
        self.setupUi(self)

# 利用一个控制器来控制页面的跳转
class Controller:
    def __init__(self):
        pass
    # 跳转到 hello 窗口
    def show_hello(self):
        self.hello = HelloWindow()
        self.hello.switch_window1.connect(self.show_login)
        self.hello.switch_window2.connect(self.show_operate)
        self.hello.show()
    # 跳转到 login 窗口, 注意关闭原页面
    def show_login(self):
        self.login = LoginWindow()
        self.hello.close()
        self.login.show()
    # 跳转到 operate 窗口, 注意关闭原页面
    def show_operate(self):
        self.operate = OperateWindow()
        self.hello.close()
        self.operate.show()

def main():
    app = QtWidgets.QApplication(sys.argv)
    controller = Controller() # 控制器实例
    controller.show_hello() # 默认展示的是 hello 页面
    sys.exit(app.exec_())
if __name__ == '__main__':
    main()

class MainWindow(QMainWindow, Ui_MainWindow):  # 多重继承QMainWindow和Ui_MainWindow
    def __init__(self):
        super(MainWindow, self).__init__()  # 先调用父类QMainWindow的初始化方法
        self.setupUi(self)  # 再调用setupUi方法

from main import MainWindow

# 关闭当前界面, 打开主界面
def toMainWindow(self):
    self.ui1 = MainWindow()
    self.ui1.show()
    self.close()

import sys
from PyQt5.QtWidgets import QMainWindow, QPushButton, QApplication
class First(QMainWindow):
    def __init__(self):
        super().__init__()
        self.initUI()
    def initUI(self):
        self.btn = QPushButton("Button", self)
        self.btn.move(30, 50)
        self.setGeometry(300, 300, 500, 500)
        self.setWindowTitle('Event sender')
        self.show()
class Second(QMainWindow):
    def __init__(self):
        super().__init__()
        self.initUI()
    def initUI(self):
        self.setGeometry(300, 300, 290, 150)
        self.setWindowTitle('Get sender')
if __name__ == '__main__':
    app = QApplication(sys.argv)
    a = First()
    b = Second()
    a.show()
    a.btn.clicked.connect(b.show)  # 重点在这
    sys.exit(app.exec_())

class First(QMainWindow):
    def __init__(self):
        super().__init__()
        self.initUI()
    def initUI(self):
        self.btn = QPushButton("Button", self)
        self.btn.move(30, 50)
        self.setGeometry(300, 300, 500, 500)
        self.setWindowTitle('Event sender')
        self.show()
        self.btn.clicked.connect(self.close)  # 加上这句话即可