kivy 滑动

from kivy.uix.gridlayout import GridLayout
from kivy.app import App
from kivy.lang.builder import Builder
from kivy.uix.scrollview import ScrollView
from kivy.uix.button import Button


Builder.load_string('''
<G>
    spacing: '10dp'
    cols: 1
    size_hint_y: None
    B:

<B>
    text: ''
    size_hint_y: None
    height: '40dp'
    on_release: self.parent.click(self)

<S>
    size_hint: 1, None
    size: ('400dp', '600dp')
    G:
''')

class G(GridLayout):
    def click(self, instance):
        self.bind(minimum_height = self.setter('height'))
        for i in range(100):
            a = B()
            a.text = str(i)
            self.add_widget(a)

class B(Button):
    pass

class S(ScrollView):
    pass

class MyApp(App):
    def build(self):
        return S()

if __name__ == '__main__':
    MyApp().run()

　　

from kivy.uix.gridlayout import GridLayout
from kivy.uix.button import Button
from kivy.uix.scrollview import ScrollView
from kivy.core.window import Window
from kivy.app import runTouchApp

layout = GridLayout(cols=1, spacing=10, size_hint_y=None)
# Make sure the height is such that there is something to scroll.
layout.bind(minimum_height=layout.setter('height'))    #******必须指定..................
print(layout.setter('height'))
for i in range(100):
    btn = Button(text=str(i), size_hint_y=None, height=40)
    layout.add_widget(btn)
root = ScrollView(size_hint=(1, None), size=(Window.width, Window.height))
root.add_widget(layout)

runTouchApp(root)