Kivy：当文字太长时，标签会变黑

Question

我有这个可滚动的标签，但是当文字太长时，它会显示为黑色矩形（参见顶部的打印屏幕）。如果我删除了标签中大约一半的文本，那么它会按预期显示（参见底部的打印屏幕） 知道如何解决这个问题吗？

import kivy
from kivy.app import App
from kivy.uix.gridlayout import GridLayout
from kivy.uix.button import Button
from kivy.uix.popup import Popup
from kivy.uix.label import Label
from kivy.uix.scrollview import ScrollView
from kivy.core.window import Window

class Test(App):
    def build(self):
        Window.clearcolor = (0.863, 0.863, 0.863, 0.9)
        layout_pop  = GridLayout (cols=3)
        for i in range(1):
            l = Label(text="1abcdefghijklmnopqrstuvwxyz_2abcdefghijklmnopqrstuvwxyz_3abcdefghijklmnopqrstuvwxyz_4abcdefghijklmnopqrstuvwxyz_5abcdefghijklmnopqrstuvwxyz_6abcdefghijklmnopqrstuvwxyz_7abcdefghijklmnopqrstuvwxyz_8abcdefghijklmnopqrstuvwxyz 1abcdefghijklmnopqrstuvwxyz_2abcdefghijklmnopqrstuvwxyz_3abcdefghijklmnopqrstuvwxyz_4abcdefghijklmnopqrstuvwxyz_5abcdefghijklmnopqrstuvwxyz_6abcdefghijklmnopqrstuvwxyz_7abcdefghijklmnopqrstuvwxyz_8abcdefghijklmnopqrstuvwxyz1abcdefghijklmnopqrstuvwxyz_2abcdefghijklmnopqrstuvwxyz_3abcdefghijklmnopqrstuvwxyz_4abcdefghijklmnopqrstuvwxyz_5abcdefghijklmnopqrstuvwxyz_6abcdefghijklmnopqrstuvwxyz_7abcdefghijklmnopqrstuvwxyz_8abcdefghijklmnopqrstuvwxyz 1abcdefghijklmnopqrstuvwxyz_2abcdefghijklmnopqrstuvwxyz_3abcdefghijklmnopqrstuvwxyz_4abcdefghijklmnopqrstuvwxyz_5abcdefghijklmnopqrstuvwxyz_6abcdefghijklmnopqrstuvwxyz_7abcdefghijklmnopqrstuvwxyz_8abcdefghijklmnopqrstuvwxyz1abcdefghijklmnopqrstuvwxyz_2abcdefghijklmnopqrstuvwxyz_3abcdefghijklmnopqrstuvwxyz_4abcdefghijklmnopqrstuvwxyz_5abcdefghijklmnopqrstuvwxyz_6abcdefghijklmnopqrstuvwxyz_7abcdefghijklmnopqrstuvwxyz_8abcdefghijklmnopqrstuvwxyz 1abcdefghijklmnopqrstuvwxyz_2abcdefghijklmnopqrstuvwxyz_3abcdefghijklmnopqrstuvwxyz_4abcdefghijklmnopqrstuvwxyz_5abcdefghijklmnopqrstuvwxyz_6abcdefghijklmnopqrstuvwxyz_7abcdefghijklmnopqrstuvwxyz_8abcdefghijklmnopqrstuvwxyz",
                      font_size=15, 
                      color=(1,1,3,1), 
                      size_hint_x= None)  
            l.bind(texture_size=l.setter('size'))
            l.bind(size_hint_min_x=l.setter('width'))
            scroll = ScrollView(size_hint=(None, None), size=(800, 30))
            scroll.add_widget(l)
            layout_pop.add_widget(scroll)
        return layout_pop

Test().run()

Answer 1

没有实际的解决方案，但我最终使用了两种解决方法：

●仅显示100个第一个字符

if len(text)>100:
    text= text[0:100]+" (...)"

●在100的每个位置插入一个\n