KivyMD MDTextField 不接受任何输入

Question

我正在尝试 KivyMD 构建一个应用程序，一切都运行良好，直到我遇到了一个问题，即使昨天花了一整天的时间，我似乎也无法解决。 我正在构建一个应用程序，我可以在其中存储我的锻炼并在添加两个 MDTextField 时遇到问题。 首先，它们无法正确对齐，并且一直移动到 boxlayout 之外，然后经过一些调整大小（KV 文件中的 self.minimum_height），它们现在可以点击（您可以看到提示文本发生变化），但它们不允许对于任何输入。 谁能帮助我为什么 MDTextField 不起作用？ 我猜这与导致字段移到boxlayout之外的相同问题有关，但我不明白是什么导致了这个问题。

这是修改后的KV：

NavigationLayout:
    id:nav_layout
    MainAppScreenManager:
        id: screen_manager

        AddWorkoutMenu:  

<MainAppScreenManager>

<AddWorkoutMenu>
    name: "addworkoutmenu"
    id: "addworkoutmenu"
    workoutname:workoutname
    setlist:setlist
    BoxLayout:
        orientation: 'vertical'

        MDToolbar:
            title: "Add Workout"
            elevation: 10

        MDTextField:
            id: workoutname
            hint_text: "Workout name"

        ScrollView:
            MDList:
                id: setlist
                Sets:
                    id: workoutboxlist

        MDRoundFlatIconButton:
            id:addset
            icon: "plus"
            text: "Add set"
            on_release:
                root.add_set()

<Sets>
    id:workoutbox
    workoutexerciselist:workoutexerciselist
    addbutton:addbutton
    reps:reps
    rest:rest
    orientation: "vertical"
    md_bg_color: app.theme_cls.primary_color
    radius: 15, 15, 15, 15
    padding: "16dp"
    spacing: "4dp"
    size_hint_y: None
    height: self.minimum_height

    BoxLayout:
        pos_hint: {"center_x": .5, "center_y": 0}
        orientation: "horizontal"
        MDLabel:
            pos_hint: {"center_x": .5, "center_y": .2}
            theme_text_color: "Custom"
            text_color: [1,1,1,1]
            text: root.id


        MDIconButton:
            pos_hint: {"center_x": .5, "center_y": 0}
            icon: "trash-can"
            theme_text_color: "Custom"
            text_color: [1,1,1,1]
            on_release:
                self.parent.parent.remove_set()

    MDBoxLayout:
        size_hint_y: None
        height: self.minimum_height / 4
        pos_hint: {"center_x": .5, "y": 0}
        orientation: "horizontal"
        MDLabel:
            size_hint: (0.15,None)
            pos_hint: {"center_x": .5, "center_y": 0}
            theme_text_color: "Custom"
            text_color: [1,1,1,1]
            text: "Reps:"

        MDTextField:
            id: reps
            size_hint: (0.4,None)
            pos_hint: {"center_x": .5, "center_y": 0.1}
            spacing: "4dp"
            current_hint_text_color: [1,1,1,1]
            line_color_normal: [1,1,1,1]
            hint_text: "# reps"

        MDLabel:
            size_hint: (0.1,None)
            pos_hint: {"center_x": .5, "center_y": 0}
            spacing: "4dp"
            theme_text_color: "Custom"
            text_color: [1,1,1,1]
            text: "Rest:"

        MDTextField:
            id: rest
            size_hint: (0.4,None)
            pos_hint: {"center_x": .5, "center_y": 0.1}
            spacing: "4dp"
            current_hint_text_color: [1,1,1,1]
            line_color_normal: [1,1,1,1]
            hint_text: "in seconds"

    MDList:
        id:workoutexerciselist

    MDRoundFlatIconButton:
        id:addbutton
        icon: "plus"
        theme_text_color: "Custom"
        text_color: [1,1,1,1]
        text: "Add exercise"
        on_release:
            root.open_the_menu()


<WorkoutExerciseListItem>
    id: listitem
    theme_text_color: "Custom"
    text_color: [1,1,1,1]
    DeleteItem:

<DeleteItem>
    name: "deleteicon"
    icon: "close"
    theme_text_color: "Custom"
    text_color: [1,1,1,1]
    on_release:
        root.remove()

这是修改后的 Python：

from kivymd.app import MDApp
from kivymd.theming import ThemableBehavior
from kivymd.toast import toast
from kivymd.uix.list import OneLineIconListItem, MDList, IRightBodyTouch, OneLineRightIconListItem
from kivymd.uix.menu import MDDropdownMenu, RightContent
from kivymd.uix.button import MDIconButton
from kivymd.uix.boxlayout import MDBoxLayout
from kivy.lang import Builder
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.behaviors import ButtonBehavior
from kivy.uix.widget import Widget
from kivy.properties import StringProperty, ObjectProperty, NumericProperty
from kivy.uix.screenmanager import ScreenManager, Screen
from database import DataBaseExercises, DataBaseWorkouts


class AddWorkoutMenu(Screen):
    def __init__(self, **kwargs):
        super(AddWorkoutMenu, self).__init__(**kwargs)


    def add_set(self):
        self.ids.setlist.add_widget(Sets(id = ""))
        for i in self.ids.setlist.children:
            if not hasattr(i, 'menu_1'):
                i.create_self()

    def save(self):
        workout = self.workoutname.text
        sets = self.ids.workoutboxlist._sets
        if workout != "":
            db_workouts.add(workout, sets)
            self.parent.current = "workouts"
            self.clear_all()
            toast("Exercise saved")
        else:
            toast("Please fill in all information")

    def clear_all(self):
        self.workoutname.text = ""
        for i in list(self.setlist.children):
            self.setlist.remove_widget(i)
        Sets._ids = 0
        self.add_set()

    def update_ids(self, removed, total):
        if removed != total:
            for i in self.ids.setlist.children:
                current_number = int(i.id[-1])
                if current_number > removed:
                    current_number -= 1
                    i.id = "Set " + str(current_number)


class Sets(MDBoxLayout):
    _ids = 0
    _sets = {}

    def __init__(self, **kwargs):
        super(Sets, self).__init__(**kwargs)
        Sets._ids += 1
        self.id = "Set " + str(Sets._ids)
        self._sets[self.id] = {}
        self._sets[self.id]["Exercise"] = []
        self._sets[self.id]["Reps"] = []
        self._sets[self.id]["Rest"] = []

    def add_selection(self, name):
        self.workoutexerciselist.add_widget(WorkoutExerciseListItem(text=name))
        self._sets[self.id]["Exercise"].append(name)
        print(self._sets[self.id]["Exercise"])
        self.update_height()

    def update_height(self):
        if self.workoutexerciselist.height == 16.0:
            self.workoutexerciselist.height = 0.0
        self.height = self.minimum_height + self.workoutexerciselist.height

    def create_menu(self, text, instance):
        menu_items = [{"text": i} for i in text]
        return MDDropdownMenu(position = "auto", caller=instance, items=menu_items, width_mult=5, callback=self.set_item)

    def create_self(self):
        exerciselist = db_exercise.get_all()
        self.menu_1 = self.create_menu(exerciselist, self.addbutton)

    def update_self(self, value):
        new_list = []
        new_list.append(value)
        for i in self.menu_1.items:
            for u in i.values():
                new_list.append(u)
        self.menu_1 = self.create_menu(new_list, self.addbutton)

    def set_item(self, instance):
        self.menu_1.on_dismiss()
        self.add_selection(instance.text)
        self.remove_item(instance.text)

    def remove_item(self, item):
        new_list = []
        for i in self.menu_1.items:
            for u in i.values():
                if u != item:
                    new_list.append(u)
        self.menu_1 = self.create_menu(new_list, self.addbutton)

    def open_the_menu(self):
        self.menu_1.open()

    def remove_set(self):
        number = int(self.id[-1])
        self._sets.pop("Set "+str(number))
        self.update_set(number)
        self.id = "Set 0"
        self.parent.parent.parent.parent.parent.update_ids(number, Sets._ids)
        Sets._ids -= 1
        self.parent.remove_widget(self)

    def update_set(self, number):
        for i in range(number, Sets._ids):
            self._sets["Set " + str(i)] = self._sets["Set " + str(i+1)]
            self._sets.pop("Set " + str(i + 1))

    def save_reps_and_rest(self):
        self._sets[self.id]["Reps"] = self.reps
        self._sets[self.id]["Rest"] = self.rest



class WorkoutExerciseListItem(OneLineRightIconListItem):
    pass


class DeleteItem(IRightBodyTouch, MDIconButton):
    pass

class MainAppScreenManager(ScreenManager):
    pass

class MainApp(MDApp):
    pass


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

Answer 1

不知道发生了什么，但添加：

        color_mode: 'custom'
        line_color_focus: 1, 1, 1, 1

每个MDTextField似乎都可以。