如何在 kivymd 和 kivy 中通过 MDDialog 使用用户的输入

Question

我正在制作一个简单的待办事项应用程序，它通过 MDDialog 从用户那里获取输入并临时添加到 MDDataTable 我想知道如何使用 MDDialog 中的用户输入来插入 MDDataTable 。 ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫ ‫

from kivy.core import window
from kivy.metrics import dp
from kivy.uix.boxlayout import BoxLayout
from kivymd.uix.screen import Screen
from kivymd.app import MDApp
from kivymd.uix.datatables import MDDataTable

from kivy.lang import Builder
from kivymd.uix.toolbar import MDToolbar
from kivymd.uix.button import MDIconButton, MDFlatButton
from kivymd.uix.dialog import MDDialog



window.Window.clearcolor = (0, 0, 0, 1)
window.Window.size = (360, 600)


KV = '''
<Content>
    orientation: "vertical"
    spacing: "12dp"
    size_hint_y: None
    height: "120dp"

    MDTextField:
        hint_text: "Enter a Todo"

    MDTextField:
        hint_text: "Enter Time"


MDFloatLayout:

'''


class Content(BoxLayout):
    pass

class Example(MDApp):
    
    dialog = None
    def build(self):
        
        tool_bar = MDToolbar(
            title= "Todo",
            pos_hint ={'center_y':.95}
        )
        
        
    
        data_tables = MDDataTable(
            size_hint=(1,.9),
            check = True,
            column_data=[
                ("", dp(10)),
                ("Content", dp(35)),
                ("Time", dp(15)),
            ]
        )

        add_button = MDIconButton(
            md_bg_color = self.theme_cls.primary_color,
            icon = 'plus',
            pos_hint = {'center_x':.5},
            on_press = self.show_confirmation_dialog
        )
        
        
        screen = Screen()
        screen.add_widget(tool_bar)
        screen.add_widget(data_tables)
        screen.add_widget(add_button)
        screen.add_widget(Builder.load_string(KV))
        return screen


    def show_confirmation_dialog(self, obj):

        def close_dilog(obj):
            self.dialog.dismiss()
        
        def use_input(obj):
            print('heare i wan to print the Todo and time')

        if not self.dialog:
            self.dialog = MDDialog(
                title="Address:",
                type="custom",
                content_cls=Content(),
                buttons=[
                    MDFlatButton(
                        text="CANCEL",
                        theme_text_color="Custom",
                        text_color=self.theme_cls.primary_color,
                        on_press = close_dilog
                    ),
                    MDFlatButton(
                        text="OK",
                        theme_text_color="Custom",
                        text_color=self.theme_cls.primary_color,
                        on_press = use_input
                    ),
                ],
            )
        self.dialog.open()


Example().run()

Answer 1

帮助从 GUI 访问数据的便捷工具是使用 ids。这是 kv 的修改版本，将 ids 添加到 Content class:

<Content>
    orientation: "vertical"
    spacing: "12dp"
    size_hint_y: None
    height: "120dp"

    MDTextField:
        id: todo
        hint_text: "Enter a Todo"

    MDTextField:
        id: time
        hint_text: "Enter Time"

MDFloatLayout:

然后您可以在 use_input() 方法中使用这些 ids：

    def use_input(obj):
        print('heare i wan to print the Todo and time')
        print('todo:', self.dialog.content_cls.ids.todo.text)
        print('time:', self.dialog.content_cls.ids.time.text)

如何在 kivymd 和 kivy 中通过 MDDialog 使用用户的输入

How to use input from user through MDDialog in kivymd and kivy

python

kivy

kivymd