如何限制显示的猕猴桃微调器项目的数量 [英] How to limit the number of displayed kivy spinner items

问题描述

我当前使用的是kivy的Spinner小部件，我想知道是否有一种方法可以限制Spinner显示并滚动查看其余项目的数量. 例如，我使用微调器显示所有月份，因此当我单击微调器时，列表到达窗口的底部.我希望看到5-6个选项，然后滚动查看其余选项.

I am am currently using the spinner widget of kivy and i would like to know if there is a way to limit the number of items the spinner shows and scroll to see the rest. For example, i am using a spinner to display all the months, so when i click the spinner, the list reaches the bottom of the window. I would like to see maybe like 5-6 options and scroll to see the rest of them.

推荐答案

您可以使用

You can use the dropdown_cls.max_size property to specify the maximum height of the drop-down list:

from kivy.base import runTouchApp
from kivy.uix.spinner import Spinner


max = 10
spinner = Spinner(
    text='Values',
    values=(str(n) for n in range(1, 20)),
    size_hint=(None, None),
    size=(100, 44),
    pos_hint={'center_x': .5, 'center_y': 0.9})

spinner.dropdown_cls.max_height = spinner.height* max + max * 4

runTouchApp(spinner)

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