主窗口前的PyQt5启动画面[重复]

Question

我正在尝试创建一个在显示主屏幕之前显示 5 秒的初始屏幕。但是，我希望启动画面与主窗口是同一个窗口，只是中间有不同的图像。

我查看了How to change UI in same window using PyQt5?，但它仍然无法正常工作...

我也尝试过使用 QSplashScreen 类，但我无法让它正常工作。如果有任何困惑，请随时发表评论，我会澄清。

这是我的代码脚本：

# importing libraries 
from PyQt5.QtWidgets import * 
from PyQt5.QtGui import * 
from PyQt5 import QtCore, QtGui 
from PyQt5.QtCore import * 
import sys   
 
  
class Window(QMainWindow): 
    def __init__(self): 
        super().__init__() 
  
        self.setStyleSheet("background-color: black;")
        self.setWindowTitle("key") 
        self.setGeometry(100, 100, 350, 500) 
        self.UiComponents() 
        self.show() 
  

    def UiComponents(self): 
        lockButton = QPushButton(self) 
        lockButton.setGeometry(60, 200, 100, 70) 
        lockButton.setStyleSheet("border-radius : 10; border : 1px solid white; background-color : #3A3535") 
        lockButton.setIcon(QIcon('lock.png')) 
        size = QSize(40, 40) 
        lockButton.setIconSize(size)
        lockButton.clicked.connect(self.clickme) 
        

    def clickme(self): 
        print("pressed") 
  

App = QApplication(sys.argv) 
window = Window() 
sys.exit(App.exec()) 

Answer 1

试试看：

from PyQt5.QtWidgets import * 
from PyQt5.QtGui import * 
from PyQt5 import QtCore, QtGui 
from PyQt5.QtCore import * 
import sys   
 
  
class Window(QMainWindow): 
    def __init__(self): 
        super().__init__() 
  
        self.setStyleSheet("background-color: black;")
        self.setWindowTitle("key") 
#        self.setGeometry(100, 100, 350, 500) 
        self.resize(350, 500) 
        
        self.UiComponents() 
        self.show() 
  

    def UiComponents(self): 
        lockButton = QPushButton(self) 
        lockButton.setGeometry(60, 200, 100, 70) 
        lockButton.setStyleSheet("border-radius : 10; border : 1px solid white; background-color : #3A3535") 
        lockButton.setIcon(QIcon('im.png'))              # ! 'lock.png'
        size = QSize(40, 40) 
        lockButton.setIconSize(size)
        lockButton.clicked.connect(self.clickme) 
        

    def clickme(self): 
        print("pressed") 
  

App = QApplication(sys.argv) 

# +++ vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
import time
splash = QSplashScreen()
splash.setPixmap(QPixmap('images/splash_.jpg').scaled(366, 568))
splash.show()
splash.showMessage('<h1 style="color:white;">Welcome to use this PyQt5-SplashScreen</h1>', 
                   Qt.AlignTop | Qt.AlignHCenter, Qt.white)    
time.sleep(5)
# +++ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    
window = Window()
splash.finish(window)     # +++

sys.exit(App.exec()) 

---

只加载图像，然后加载窗口。是否可以在同一个窗口（只是纯黑屏幕）上加载图像，然后加载主窗口？

from PyQt5.QtWidgets import * 
from PyQt5.QtGui import * 
from PyQt5 import QtCore, QtGui 
from PyQt5.QtCore import * 
import sys   
 
  
class Window(QMainWindow): 
    def __init__(self): 
        super().__init__() 
  
        self.setStyleSheet("background-color: black;")
        self.setWindowTitle("key") 
#        self.setGeometry(100, 100, 350, 500) 
        self.resize(350, 500) 
# ++ vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv        
        self.label = QLabel(self)
        self.label.resize(350, 500)
        self.label.setPixmap(QPixmap('images/splash_.jpg').scaled(350, 500))
        QTimer.singleShot(5000, self.UiComponents) 
# ++ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        self.show() 

    def UiComponents(self): 
        self.label.hide()                                                      # +++
        
        lockButton = QPushButton(self) 
        lockButton.setGeometry(60, 200, 100, 70) 
        lockButton.setStyleSheet("border-radius : 10; border : 1px solid white; background-color : #3A3535") 
        lockButton.setIcon(QIcon('im.png'))                                    # ! 'lock.png'
        size = QSize(40, 40) 
        lockButton.setIconSize(size)
        lockButton.clicked.connect(self.clickme) 
        lockButton.show()                                                      # +++

    def clickme(self): 
        print("pressed") 
  

App = QApplication(sys.argv) 
window = Window()
sys.exit(App.exec())