Python PyQt5:在Qmovie中重新加载gif

如何在PyQt5中重新加载新的动画gif文件

我想做的是：

加载测试.gif

play test.gif

用另一个任意动画gif覆盖原始test.gif文件

单击按钮时，让Qmovie重新加载gif

显示新的gif

以下是我为尝试此操作而设置的基本代码，但是单击按钮刷新不起作用：

import sys
from PyQt5.QtCore import Qt, QByteArray, QSettings, QTimer, pyqtSlot
from PyQt5.QtWidgets import QWidget, QApplication, QLabel, QSizePolicy, QVBoxLayout, QAction, QPushButton
from PyQt5.QtGui import QMovie

class GifPlayer(QWidget):
    def __init__(self, title, parent=None):
        QWidget.__init__(self, parent)

        self.movie = QMovie("test.gif", QByteArray(), self)
        size = self.movie.scaledSize()
        self.setGeometry(200, 200, size.width(), size.height())
        self.setWindowTitle(title)
        self.movie_screen = QLabel()
        self.movie_screen.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
        self.movie_screen.setAlignment(Qt.AlignCenter)        
        main_layout = QVBoxLayout()
        main_layout.addWidget(self.movie_screen)
        self.setLayout(main_layout)
        self.movie.setCacheMode(QMovie.CacheAll)
        self.movie_screen.setMovie(self.movie)
        self.movie.start()
        self.movie.loopCount()

        button = QPushButton('refresh gif', self)
        button.setToolTip('This is an example button')
        button.move(10,10)
        button.clicked.connect(self.on_click)

    @pyqtSlot()
    def on_click(self):
        self.movie_screen.setMovie(self.movie)
        print("done")     

if __name__ == "__main__":  
    app = QApplication(sys.argv)
    player = GifPlayer("update this gif")
    player.show()
    sys.exit(app.exec_())

---

事实证明，这是一个基本上很容易解决的问题。错误是试图刷新电影屏幕，而不是电影本身。只需重新设置QMovie文件，让电影屏幕重新显示它，然后启动电影。以下是更正后的代码：

gifFile = "test.gif"
class GifPlayer(QWidget):
    def __init__(self, title, gifFile, parent=None):
        QWidget.__init__(self, parent)

        self.movie = QMovie(gifFile, QByteArray(), self)
        size = self.movie.scaledSize()
        self.setGeometry(200, 200, size.width(), size.height())
        self.setWindowTitle(title)
        self.movie_screen = QLabel()
        self.movie_screen.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
        self.movie_screen.setAlignment(Qt.AlignCenter)
        main_layout = QVBoxLayout()
        main_layout.addWidget(self.movie_screen)
        self.setLayout(main_layout)
        self.movie.setCacheMode(QMovie.CacheAll)
        self.movie_screen.setMovie(self.movie)
        self.movie.start()
        self.movie.loopCount()

        button = QPushButton('refresh gif', self)
        button.setToolTip('This is an example button')
        button.move(10,10)
        button.clicked.connect(self.on_click)

    @pyqtSlot()
    def on_click(self):
        self.movie = QMovie(gifFile,QByteArray(), self)
        self.movie_screen.setMovie(self.movie)
        self.movie.start()
        print("done")

if __name__ == "__main__":
    app = QApplication(sys.argv)
    player = GifPlayer("update this gif", gifFile)
    player.show()
sys.exit(app.exec_())

---

点击方式主要是需要改变的

你必须创作另一部电影，然后调用start（）我将每5分钟更新一次，我是否必须每5分钟再创作一部电影？是的，你为什么要寻找另一种神奇的方式？