python - 在BoxLayout中动态添加和删除按钮小部件

需要帮助找出代码，使我可以在textinput中搜索某些内容，并使与搜索匹配的所有项目都出现在boxlayout中。我才刚开始做奇异果（3天前）。

main.py

# import kivy & functions/widgets.
import kivy
from kivy.app import App
from kivy.uix.label import Label
from kivy.uix.widget import Widget
from kivy.uix.button import Button
from kivy.uix.textinput import TextInput

# import kivy layouts.
from kivy.uix.floatlayout import FloatLayout
from kivy.uix.stacklayout import StackLayout
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.gridlayout import GridLayout

# Specify version or kivy needed.
kivy.require("1.10.1")


class Page(FloatLayout):
    pass



class YuGiOhApp(App):
    def build(self):
        return Page()

YuGiOhApp().run()

我不知道我需要多少进口物品，因为我在玩奇异果时就把它们留在那里。

玉吉

#:kivy 1.10.1

<TestButton@Button>:
    width: 177
    height: 254
    size_hint: None, None
    background_normal: "pics/32864.jpg"

<FloatLayout>:

    id: searchpage
    display: entry

    Button:
        id: searchbutton
        size_hint: 0.20, 0.10
        pos_hint: {"x": 0.60, "top": 1}
        text: "search"

    Button:
        id: collectionbutton
        size_hint: 0.20, 0.10
        pos_hint: {"x": 0.80, "top": 1}
        text: "collection"

    TextInput:
        id: entry
        multiline: False
        font_size: 48
        size_hint: 0.60, 0.10
        pos_hint: {"x": 0, "top": 1}

    ScrollView:
        size_hint: 0.60, 0.90
        StackLayout:
            orientation: "lr-tb"
            pos_hint: {"x": 0, "top": 0.88}
            size_hint: 1, None

            height: self.minimum_height

            padding: 5
            spacing: 5

            TestButton:
            TestButton:
            TestButton:
            TestButton:
            TestButton:
            TestButton:
            TestButton:
            TestButton:
            TestButton:
            TestButton:
            TestButton:
            TestButton:

到目前为止，我的猕猴桃代码。

最佳答案

您已经写了评论Even an example of how to add and remove the widgets would help greatly as i can fit it to my own program and needs!，所以它是：

from kivy.app import App
from kivy.clock import Clock
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.label import Label


class MyWidget(BoxLayout):
    def __init__(self, *args):
        Clock.schedule_once(self.add_widgets, 1)
        Clock.schedule_once(self.remove_widgets, 2)

        return super().__init__(*args)

    def add_widgets(self, *args):
        # add two widgets
        self.add_widget(Label(text="Hello"))
        self.add_widget(Label(text="World"))

    def remove_widgets(self, *args):
        # remove a widget using children property
        self.remove_widget(self.children[1])


class MyApp(App):
    def build(self):
        return MyWidget()


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

这很简单。您可以使用add_widget方法添加任何小部件（按钮，标签，布局等）的新创建实例。然后，可以通过将其id传递给remove_widget方法来删除它。您可以从children属性获取它，也可以自己存储它，例如：

my_button = Button(text="Blah blah")
# ...
my_layout.add_widget(my_button)
# ...
my_layout.remove_widget(my_button)

关于python - 在BoxLayout中动态添加和删除按钮小部件，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/54433268/