progressbar.py 文件源码

def build(self):
            return Builder.load_string("""#:import MDSlider kivymd.slider.MDSlider
BoxLayout:
    orientation:'vertical'
    padding: '8dp'
    MDSlider:
        id:slider
        min:0
        max:100
        value: 40

    MDProgressBar:
        value: slider.value
    MDProgressBar:
        reversed: True
        value: slider.value
    BoxLayout:
        MDProgressBar:
            orientation:"vertical"
            reversed: True
            value: slider.value

        MDProgressBar:
            orientation:"vertical"
            value: slider.value

""")