不存在的线

Question

我正在学习Kivy，并且正在MDExpansionpanel小部件上。 来自JSON的数据源我使用键组装我的面板和值来构成我的内容。

碰巧我能够做到这一点，但是我的内容中总是会出现一条额外的行。

我希望您的帮助删除这一行。

我将在下面发布我的代码：

from kivy.lang import Builder
from kivymd.app import MDApp
from kivymd.uix.boxlayout import MDBoxLayout
from kivymd.uix.expansionpanel import MDExpansionPanel, MDExpansionPanelOneLine
from kivy.properties import StringProperty, ObjectProperty


json_data = {'01001BA476': {'price': '74.73',
                            'product_code': '000003',
                            'quantity': '100'},
             '0100251633': {'price': '92.07',
                            'product_code': '000156',
                            'quantity': '1000'}}


KV = '''
<ClassDetails>
    orientation: 'vertical'
    adaptive_height: True
    OneLineIconListItem:
        id: info_line
        text: root.text
        on_press: root.action()

        IconLeftWidget:
            icon: 'star'
            on_press: print(f'star pressed on line: {info_line.text}')

ScrollView:
    MDGridLayout:
        id: box
        cols: 1
        adaptive_height: True
'''


class ClassDetails(MDBoxLayout):
    text = StringProperty()
    action = ObjectProperty()

class InvoicePanel(MDExpansionPanel):
    pass

class Test(MDApp):
    def build(self):
        return Builder.load_string(KV)

    def fechar_pedido(self):
        print('You clicked on the information line')

    def on_start(self):
        for class_title, class_details in json_data.items():
            cd = ClassDetails()
            expansion_panel = InvoicePanel(panel_cls=MDExpansionPanelOneLine(text=f'Invoice #: {class_title}'), content=cd)
            self.root.ids.box.add_widget(expansion_panel)

            for item in class_details.items():
                cd.add_widget(ClassDetails(
                    text=str(class_details.values()), action=self.fechar_pedido))

Test().run()

Answer 1

我认为，将您的初始content设置为classDetails实例，该额外的线条来自其定义中具有onelineiconListItem。尝试用简单的mdboxlayout而替换content：

def on_start(self):
    for class_title, class_details in json_data.items():
        print(class_title, class_details)
        # cd = ClassDetails()
        cd = MDBoxLayout(orientation='vertical', adaptive_height=True)
        expansion_panel = InvoicePanel(panel_cls=MDExpansionPanelOneLine(text=f'Invoice #: {class_title}'), content=cd)
        self.root.ids.box.add_widget(expansion_panel)

        for item in class_details.items():
            print('\titem:', item)
            cd.add_widget(ClassDetails(
                text=str(class_details.values()), action=self.fechar_pedido))