的Python Kivy在一個TreeView

Question

我嘗試添加一個滑塊，這樣的樹狀添加滑塊：

myTreeView = TreeView() 
myTreeView.add_node(Slider(min=0, max = 20, value = 0)) 

但這生成和錯誤「的節點必須TreeViewNode的子類」 我如何添加滑塊到基維的treeview？

Answer 1

您需要通過擴展Slider和TreeViewNode來創建TreeViewSlider。

from kivy.app import App 
from kivy.uix.slider import Slider 
from kivy.uix.treeview import TreeView, TreeViewNode 
from kivy.uix.button import Button 
from kivy.uix.slider import Slider 
from kivy.uix.label import Label 
from kivy.lang import Builder 

class TreeViewButton(Button, TreeViewNode): 
    pass 
class TreeViewLabel(Label, TreeViewNode): 
    pass 
class TreeViewSlider(Slider, TreeViewNode): 
    pass 

class TestApp(App): 
    def build(self): 
     tv = TreeView() 
     tv.add_node(TreeViewLabel(text='My first item')) 
     tv.add_node(TreeViewLabel(text='My second item')) 
     tv.add_node(TreeViewButton(text='My third item')) 
     tv.add_node(TreeViewSlider()) 
     return tv 

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