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我正在尝试在 Accordion 中使用 PageLayout，但是当我尝试单击任何位置时，它给了我这个错误。如何使它工作。

Traceback (most recent call last):
   File "accmain.py", line 19, in <module>
     LiuApp().run()

   File "/usr/lib/python2.7/dist-packages/kivy/app.py", line 828, in run
     runTouchApp()

   File "/usr/lib/python2.7/dist-packages/kivy/base.py", line 487, in runTouchApp
     EventLoop.window.mainloop()

   File "/usr/lib/python2.7/dist-packages/kivy/core/window/window_sdl2.py", line 619, in mainloop
     self._mainloop()

   File "/usr/lib/python2.7/dist-packages/kivy/core/window/window_sdl2.py", line 362, in _mainloop
     EventLoop.idle()

   File "/usr/lib/python2.7/dist-packages/kivy/base.py", line 330, in idle
     self.dispatch_input()

   File "/usr/lib/python2.7/dist-packages/kivy/base.py", line 315, in dispatch_input
     post_dispatch_input(*pop(0))

   File "/usr/lib/python2.7/dist-packages/kivy/base.py", line 221, in post_dispatch_input
     listener.dispatch('on_motion', etype, me)

   File "_event.pyx", line 718, in kivy._event.EventDispatcher.dispatch (kivy/_event.c:7146)

   File "/usr/lib/python2.7/dist-packages/kivy/core/window/__init__.py", line 1034, in on_motion
     self.dispatch('on_touch_up', me)

   File "_event.pyx", line 718, in kivy._event.EventDispatcher.dispatch (kivy/_event.c:7146)

   File "/usr/lib/python2.7/dist-packages/kivy/core/window/__init__.py", line 1070, in on_touch_up
     if w.dispatch('on_touch_up', touch):

   File "_event.pyx", line 718, in kivy._event.EventDispatcher.dispatch (kivy/_event.c:7146)

   File "/usr/lib/python2.7/dist-packages/kivy/uix/widget.py", line 454, in on_touch_up
     if child.dispatch('on_touch_up', touch):

   File "_event.pyx", line 718, in kivy._event.EventDispatcher.dispatch (kivy/_event.c:7146)

   File "/usr/lib/python2.7/dist-packages/kivy/uix/widget.py", line 454, in on_touch_up
     if child.dispatch('on_touch_up', touch):

   File "_event.pyx", line 718, in kivy._event.EventDispatcher.dispatch (kivy/_event.c:7146)

   File "/usr/lib/python2.7/dist-packages/kivy/uix/widget.py", line 454, in on_touch_up
     if child.dispatch('on_touch_up', touch):

   File "_event.pyx", line 718, in kivy._event.EventDispatcher.dispatch (kivy/_event.c:7146)

   File "/usr/lib/python2.7/dist-packages/kivy/uix/widget.py", line 454, in on_touch_up
     if child.dispatch('on_touch_up', touch):

   File "_event.pyx", line 718, in kivy._event.EventDispatcher.dispatch (kivy/_event.c:7146)

   File "/usr/lib/python2.7/dist-packages/kivy/uix/widget.py", line 454, in on_touch_up
     if child.dispatch('on_touch_up', touch):

   File "_event.pyx", line 718, in kivy._event.EventDispatcher.dispatch (kivy/_event.c:7146)

   File "/usr/lib/python2.7/dist-packages/kivy/uix/pagelayout.py", line 201, in on_touch_up

return self.children[-self.page + 1].on_touch_up(touch)

 IndexError: list index out of range

到目前为止，这是我为解决此错误所做的工作。 accmain.py 文件

from kivy.app import App  
from kivy.uix.accordion import Accordion

class RunLiu(Accordion):
    def __init__(self, **kwargs):
        super(RunLiu, self).__init__(**kwargs)

class LiuApp(App):
    def build(self):
        root = RunLiu()
        return root

if __name__ == "__main__":
    LiuApp().run()`

liu.kv 文件

<RunLiu>:
    orientation: "vertical"
    AccordionItem:
        title: "Item 1"
        PageLayout:
            Label:
                text: "yee"

    AccordionItem:
        title: "Item 2"
        Label:
            text: "hey there"

    AccordionItem:
        title: "3rd tab"
        Label:
            text: 'Item 3'

抱歉格式化，我对堆栈溢出和 kivy 都很陌生。我的文件中的所有缩进都是正确的。

4

1 回答 1

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我有点不明白你的问题。在我看来，要么你没有发布你的整个代码，要么打错了字，要么有旧版本的 kivy。在主分支（1.9.2）上，此代码不会引发任何错误，您可以毫无问题地列出页面（当然标签没有背景，所以它会重叠）：

from kivy.app import App  
from kivy.lang import Builder
from kivy.uix.accordion import Accordion
Builder.load_string('''
<RunLiu>:
    orientation: "vertical"
    AccordionItem:
        title: "Item 1"
        PageLayout:
            Label:
                text: "yee"
            Label:
                text: "ya"
            Label:
                text: "yas"

    AccordionItem:
        title: "Item 2"
        Label:
            text: "hey there"

    AccordionItem:
        title: "3rd tab"
        Label:
            text: 'Item 3'
''')

class RunLiu(Accordion):
    def __init__(self, **kwargs):
        super(RunLiu, self).__init__(**kwargs)

class LiuApp(App):
    def build(self):
        root = RunLiu()
        return root

if __name__ == "__main__":
    LiuApp().run()
于 2016-05-11T07:15:34.143 回答