带有选择弹出窗口的列表视图

Question

我正在尝试创建一个列表视图，在该列表视图中，所选按钮会根据所选的列表按钮生成包含不同信息的弹出窗口。有什么建议么？谢谢

Answer 1

自 Kivy 版本 1.10.0 起，ListView 已被弃用。在下面的示例中，我们使用的是 Recycleview。

示例

main.py

from kivy.app import App
from kivy.uix.recycleview import RecycleView
from kivy.uix.recycleview.views import RecycleDataViewBehavior
from kivy.uix.button import Button
from kivy.uix.recycleboxlayout import RecycleBoxLayout
from kivy.uix.behaviors import FocusBehavior
from kivy.uix.recycleview.layout import LayoutSelectionBehavior
from kivy.uix.popup import Popup
from kivy.properties import ListProperty, StringProperty, ObjectProperty


class MessageBox(Popup):

    def popup_dismiss(self):
        self.dismiss()


class SelectableRecycleBoxLayout(FocusBehavior, LayoutSelectionBehavior, RecycleBoxLayout):
    """ Adds selection and focus behaviour to the view. """
    selected_value = StringProperty('')
    btn_info = ListProperty(['Button 0 Text', 'Button 1 Text', 'Button 2 Text'])


class SelectableButton(RecycleDataViewBehavior, Button):
    """ Add selection support to the Label """
    index = None

    def refresh_view_attrs(self, rv, index, data):
        """ Catch and handle the view changes """
        self.index = index
        return super(SelectableButton, self).refresh_view_attrs(rv, index, data)

    def on_press(self):
        self.parent.selected_value = 'Selected: {}'.format(self.parent.btn_info[int(self.id)])

    def on_release(self):
        MessageBox().open()


class RV(RecycleView):
    rv_layout = ObjectProperty(None)

    def __init__(self, **kwargs):
        super(RV, self).__init__(**kwargs)
        self.data = [{'text': "Button " + str(x), 'id': str(x)} for x in range(3)]


class TestApp(App):
    title = "RecycleView Button Popup Demo"

    def build(self):
        return RV()


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

test.kv

#:kivy 1.10.0

<MessageBox>:
    title: 'Popup Message Box'
    size_hint: None, None
    size: 400, 400

    BoxLayout:
        orientation: 'vertical'
        Label:
            text: app.root.rv_layout.selected_value
        Button:
            size_hint: 1, 0.2
            text: 'OK'
            on_press:
                root.dismiss()

<SelectableButton>:
    # Draw a background to indicate selection
    canvas.before:
        Color:
            rgba: (0.0, 0.9, 0.1, 0.3)
        Rectangle:
            pos: self.pos
            size: self.size

<RV>:
    rv_layout: layout
    viewclass: 'SelectableButton'
    SelectableRecycleBoxLayout:
        id: layout
        default_size: None, dp(56)
        default_size_hint: 0.1, None
        size_hint_y: None
        height: self.minimum_height
        orientation: "vertical"

带有选择弹出窗口的列表视图

Listview with popup on selection

python-3.x

kivy

kivy-language

示例

main.py

test.kv

输出