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python - 打印哪个 Radio-ToggleButton 处于关闭状态

问题描述

我对 Python 和 Kivy 都是新手。我们正在为一项任务开发此应用程序，我正在使用首选项页面。我的标签、文本输入、切换按钮和按钮都在正确的位置并且可以正常工作，但我正在为如何获得这些按钮的输出而苦苦挣扎。

基本上，当有人按下确认按钮时，我想像这样打印输出：

Name: Blabla
Mood reminders: 2 per day
Diary reminders: 1 per day

我认为 on_press 不起作用，因为每次按下按钮时都会打印一个值，而不是仅在按下确认时打印一个值。

现在我的 .py 代码看起来像这样

from kivy.app import App
from kivy.lang import Builder
from kivy.uix.floatlayout import FloatLayout
from kivy.properties import ObjectProperty

# Builder.load_file('preferences.kv')

class MyFloatLayout(FloatLayout):
    name = ObjectProperty(None)
    def mood_buttons(self):
        pass
    def diary_buttons(self):
        pass

    def print_specs(self):
        print("Name: " + self.name.text


class PreferencesApp(App):
    def build(self):
        return MyFloatLayout()

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

我的 .kv 语言文件看起来像这样

<Label>
    font_size: 20
<TextInput>
    font_size: 20
<Checkbox>
    size_hint_x: .20
<MyFloatLayout>:
    name: name
    FloatLayout:
        Label:
            text: "Name: "
            size_hint: 0.4, 0.08
            pos_hint:{"x": 0.1, "center_y": 0.85}
        TextInput:
            id: name
            multiline: False
            size_hint: 0.4, 0.07
            pos_hint:{"x":0.5,"center_y":0.85}

        Label:
            text: "How many mood reminders would you like?"
            size_hint: 0.5, 0.1
            pos_hint: {"center_x": 0.5, "top": 0.75}
        BoxLayout:
            pos_hint: {'center_x': 0.5, 'y': 0.55}
            size_hint: 0.8, 0.1
            ToggleButton:
                text:"Zero"
                id: m0
                group: "mood_popups"
                on_press: self.mood_buttons()
            ToggleButton:
                text:"1 per day"
                id: m1
                group: "mood_popups"
            ToggleButton:
                text:"2 per day"
                id: m2
                group: "mood_popups"
            ToggleButton:
                text:"3 per day"
                id: m3
                group: "mood_popups"

        Label:
            text: "How many diary reminders would you like?"
            size_hint: 0.5, 0.1
            pos_hint: {"center_x": 0.5, "top": 0.55}
        BoxLayout:
            pos_hint: {'center_x': 0.5, 'y': 0.35}
            size_hint: 0.8, 0.1
            ToggleButton:
                text:"Zero"
                id: d0
                group: "diary_popups"
            ToggleButton:
                text:"1 per day"
                id: d1
                group: "diary_popups"
            ToggleButton:
                text:"1 per two days"
                id: d2
                group: "diary_popups"
            ToggleButton:
                text:"1 per week"
                id: d3
                group: "diary_popups"

        Button:
            text: 'Confirm'
            size_hint: 0.5, 0.1
            pos_hint: {"x": 0.25, "top": 0.2}
            on_press: root.print_specs()

标签： pythonradio-buttonkivy

解决方案

您可以Buttons使用该get_widgets()方法访问组中的所有内容。所以你的print_specs()方法可以是：

def print_specs(self):
    print("Name: " + self.name.text)
    
    # get mood reminder
    mood_reminder = ''
    for toggle in ToggleButton.get_widgets('mood_popups'):
        if toggle.state == 'down':
            mood_reminder = toggle.text
            break
    print('Mood reminders:', mood_reminder)

    # get diary reminder
    diary_reminder = ''
    for toggle in ToggleButton.get_widgets('diary_popups'):
        if toggle.state == 'down':
            diary_reminder = toggle.text
            break
    print('Diary reminders:', diary_reminder)

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