我正在尝试KivyMD来构建应用程序，并且一切工作都很好，直到遇到一个问题，即使昨天花了整整一天时间，该问题我似乎也无法解决。我正在构建一个应用程序，可以在其中存储我的锻炼并添加两个MDTextField时遇到问题。首先，它们无法正确对齐，并且一直移动到框布局之外，然后进行了一些调整（KV文件中的self.minimum_height），现在可以单击它们了（您可以看到提示文本发生了变化），但是它们不允许对于任何输入。有人可以帮我为什么MDTextField无法正常工作吗？我猜这与导致字段移到BoxLayout之外的同一问题有关，但我不知道是什么导致了该问题。
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()
这是经过修改的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()