如何解决KivyMD-在DialogBox中使用时无法更新TextField的文本
我已经使用 KivyMD 开发了一个屏幕，该屏幕显示特定项目的参数值（在对话框中）（我将其列为 OnelinelistItem ）。我还想为用户提供从对话框更改参数值的条件。但显然我无法从对话框更新参数设置。该对话框包含文本字段。谁能帮助我通过遍历代码来找出问题，并让我知道我在哪里做错了？ TIA ！ ：）
testingsetpointpage.py
'''
from kivy.config import Config
Config.set('kivy','keyboard_mode','systemanddock')
from kivy.uix.boxlayout import BoxLayout
from kivymd.app import MDApp
from kivy.lang.builder import Builder
from kivy.uix.screenmanager import Screen
from kivymd.uix.dialog import MDDialog
from kivy.properties import ObjectProperty
from kivy.core.window import Window
from kivymd.uix.button import MDFlatButton
from kivy.properties import StringProperty
Window.size = (1024,600)
此处显示了生成器：
KV = """
#:kivy 1.11.0
#:import MDDropdownMenu kivymd.uix.menu.MDDropdownMenu
#:import MDRaisedButton kivymd.uix.button.MDRaisedButton
ScreenManager:
MainScreen:
<MainScreen>:
name: 'mainscreen'
NavigationLayout:
ScreenManager:
Screen:
name: 'homemain'
BoxLayout:
orientation:"vertical"
halign:"center"
#DOWN TAB
MDBottomNavigation:
MDBottomNavigationItem:
name: 'setpoint'
text: 'Setpoints'
icon: 'network'
BoxLayout:
orientation: "vertical"
MDToolbar:
title: 'Setpoints'
pos_hint: {'center_x':0.5,'center_y':0.95}
right_action_items: [["wifi",lambda x: app.navigation_draw()]]
left_action_items: [["menu",lambda x: nav_drawer.toggle_nav_drawer()]]
elevation: 10
BoxLayout:
orientation:"vertical"
padding: 5
spacing: 5
MDLabel:
text: " Functions: "
halign:"left"
theme_text_color: "Custom"
text_color: 0,1,1
size_hint_y: 0.15
canvas.before:
Color:
rgba: (211/255.0,211/255.0,1)
Rectangle:
size: self.size
pos: self.pos
SetpointContent:
#MAKE THE PARAMETER LIST
<SetpointContent>:
BoxLayout:
orientation: "vertical"
padding: 5
spacing: 5
ScrollView:
MDList:
OneLineListItem:
text: "51P: Phase Time Overcurrent"
on_press: root.show_51Pdata()
<Content51P>
alarmpick51p: alp51p
alarmdelay51p: ald51p
trippick51p: trp51p
invcurve51p: inp51p
orientation: "vertical"
size_hint_y: None
height: "200dp"
GridLayout:
rows: 4
cols: 2
spacing: 10
MDLabel:
text: "Alarm Pickup: "
halign: "center"
theme_text_color: "Custom"
text_color: 0,1
size_hint_y: 0.15
size_hint_x: 0.4
width:100
MDTextFieldRect:
id: alp51p
text: root.text1
multiline: False
MDLabel:
text: "Alarm Delay: "
halign: "center"
theme_text_color: "Custom"
text_color: 0,1
size_hint_y: 0.15
size_hint_x: 0.4
width:100
MDTextFieldRect:
id: ald51p
text: str(app.Aldelay51P)
multiline: False
MDLabel:
text: "Trip Pickup: "
halign: "center"
theme_text_color: "Custom"
text_color: 0,1
size_hint_y: 0.15
size_hint_x: 0.4
width:100
MDTextFieldRect:
id: trp51p
text: str(app.Trpick51P)
multiline: False
MDLabel:
text: "Inverse Curve: "
halign: "center"
theme_text_color: "Custom"
text_color: 0,1
size_hint_y: 0.15
size_hint_x: 0.4
width:100
MDTextFieldRect:
id: inp51p
text: str(app.InverseCurve)
multiline: False
#####
"""
和类在这里定义：
class Content51P(BoxLayout):
app=MDApp.get_running_app()
text1 = StringProperty("1")
alarmpick51p = ObjectProperty()
alarmdelay51p = ObjectProperty()
trippick51p = ObjectProperty()
invcurve51p = ObjectProperty()
class MainScreen(Screen):
class SetpointContent(Screen):
def show_51Pdata(self):
self.dialog = MDDialog(title="51P Parameters:",type="custom",content_cls=Content51P(),buttons=[MDFlatButton(text='Close',on_release=self.close_dialog),MDFlatButton(text='Update',on_release=self.update51P)]
)
self.dialog.auto_dismiss = False
self.dialog.open()
def update51P(self,obj):
duc = Content51P()
app = MDApp.get_running_app()
duc.text1 = duc.ids.alp51p.text
print(duc.text1)
app.Alpick51P = float(duc.text1)
print(app.Alpick51P)
def close_dialog(self,obj):
self.dialog.auto_dismiss = True
self.dialog.dismiss()
class MainApp(MDApp):
Alpick51P = ObjectProperty("5")
Aldelay51P = ObjectProperty("5")
Trpick51P = ObjectProperty("5")
InverseCurve = ObjectProperty("Very Inverse")
def build(self):
self.theme_cls.primary_palette = "Blue"
screen = Builder.load_string(KV)
return screen
def navigation_draw(self):
print("Navigation")
def on_start(self):
pass
if __name__ == '__main__':
MainApp().run()
解决方法
在kv规则中，<Content51P>的{{1}}文本输入下添加：
MDTextFieldRect on_text: app.Alpick51P = self.text
on_text: app.Aldelay51P = self.text
on_text: app.Trpick51P = self.text
on_text: app.InverseCurve = self.text
方法应转到相应的on_text。
现在更新MDTextFieldRect函数应该如下：
update51P()这现在将打印来自textinput字段的更新的输入。
版权声明：本文内容由互联网用户自发贡献，该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容， 请发送邮件至 dio@foxmail.com 举报，一经查实，本站将立刻删除。