串行动画组QSequentialAnimationGroup

QSequentialAnimationGroup继承于QAbstractAnimation

按顺序执行动画

该类就是用来按照动画添加顺序来执行动画的。我们只用实例化该类，然后通过调用addAnimation()或者insertAnimation()方法把各个动画添加进去就可以了

 import sys
 from PyQt5.QtGui import QPixmap
 from PyQt5.QtCore import QPropertyAnimation, QSequentialAnimationGroup, QRect
 from PyQt5.QtWidgets import QApplication, QWidget, QLabel
 
 class Demo(QWidget):
     def __init__(self):
         super(Demo, self).__init__()
         self.resize(600, 600)
 
         self.plane = QLabel(self)
         self.plane.resize(50, 50)
         self.plane.setPixmap(QPixmap(r'D:\ss\ssss\images\plane.png').scaled(self.plane.size()))
 
         self.animation1 = QPropertyAnimation(self.plane, b'geometry')  #创建一个属性动画对象
         #动画目标标签  位置和大小
         self.animation1.setDuration(2000)
         self.animation1.setStartValue(QRect(300, 500, 50, 50))
         self.animation1.setEndValue(QRect(200, 400, 50, 50))
         self.animation1.setLoopCount(1)
 
         self.animation2 = QPropertyAnimation(self.plane, b'geometry')
         self.animation2.setDuration(2000)
         self.animation2.setStartValue(QRect(200, 400, 50, 50))
         self.animation2.setEndValue(QRect(400, 300, 50, 50))
         self.animation2.setLoopCount(1)
 
         self.animation3 = QPropertyAnimation(self.plane, b'geometry')
         self.animation3.setDuration(2000)
         self.animation3.setStartValue(QRect(400, 300, 50, 50))
         self.animation3.setEndValue(QRect(200, 200, 50, 50))
         self.animation3.setLoopCount(1)
 
         self.animation_group = QSequentialAnimationGroup(self) #实例化一个串行动画
         self.animation_group.addAnimation(self.animation1)  #添加属性动画
         self.animation_group.addPause(1000)           #设置动画暂停时间
         self.animation_group.addAnimation(self.animation2)
         self.animation_group.addAnimation(self.animation3)
         self.animation_group.start()   #启动串行动画
 
 if __name__ == '__main__':
     app = QApplication(sys.argv)
     demo = Demo()
     demo.show()
     sys.exit(app.exec_())