如何解决我无法在MDList
我想使用python模块kivymd中的OneLineListItem添加文本。当我运行我的代码时，我只得到滚动视图，而屏幕内没有文本。我不确定自己在做什么错。我想从任何人那里得到任何想法。我将代码发布在下面，随时查看代码。大家好，我需要解决我的问题的方法。谢谢！
from kivymd.app import MDApp
from kivy.core.window import Window
from kivymd.uix.list import ThreeLineAvatarListItem,ImageLeftWidget
Window.size = (360,500)
class DemoApp(MDApp):
def build(self):
self.theme_cls.primary_palette = "Yellow"
self.theme_cls.primary_hue = 'A400'
self.theme_cls.theme_style = 'Dark'
pass
def on_start(self):
for i in range(10):
image = ImageLeftWidget(source="soldier.jpg")
items = ThreeLineAvatarListItem(text="Item " + str(i),secondary_text="Hello World",tertiary_text="Third text")
items.add_widget(image)
self.root.ids.container.add_widget(items)
#:include firebaseloginscreen.kv
#:import FirebaseLoginScreen firebaseloginscreen.FirebaseLoginScreen
#:import utils kivy.utils
#: import FadeTransition kivy.uix.screenmanager.FadeTransition
#: import SlideTransition kivy.uix.screenmanager.SlideTransition
#FloatLayout:
ScreenManager:
id: screen_manager
canvas.before:
Color:
rgb: 1,1,1
Rectangle:
size: self.size
pos: self.pos
FirebaseLoginScreen:
canvas.before:
Rectangle:
size: self.size
pos: self.pos
source: "heart.png"
id: firebase_login_screen
name: "firebase_login_screen"
size_hint: 1,1
pos_hint: {"top": 1,"right": 1}
web_api_key: "AIaSyCqafRzds38uZDLlKuI"
primary_color: utils.get_color_from_hex("#e6e600")#("#EE682A")
secondary_color: utils.get_color_from_hex("#060809")
tertiary_color: utils.get_color_from_hex("#434343")
on_login_success:
app.user_localId = self.localId
app.user_idToken = self.idToken
screen_manager.transition = FadeTransition(duration=0.01)
screen_manager.current = "main_app_screen"
#screen_manager.transition.direction = 'right'
print(firebase_login_screen.refresh_token_file)
Screen:
name: "main_app_screen"
NavigationLayout:
ScreenManager:
Screen:
name: "main_app_screen"
canvas.before:
Rectangle:
size: self.size
pos: self.pos
source: "3cr_2.png"
BoxLayout:
orientation: 'vertical'
spacing: '0.5dp'
MDToolbar:
title: "Tools"
left_action_items: [["menu",lambda x: nav_drawer.toggle_nav_drawer()]]
MDIconButton:
icon: 'message'
on_press: screen_manager.current = "messages"
theme_text_color: 'Custom'
md_bg_color: app.theme_cls.primary_color
MDBottomAppBar:
MDToolbar:
title: 'Calendar'
left_action_items: [['calendar',lambda x: app.calendar()]]
mode: 'free-end'
icon: 'sword'
on_action_button: app.navigation_draw()
Widget:
MDNavigationDrawer:
id: nav_drawer
BoxLayout:
orientation: 'vertical'
spacing: '8dp'
padding: '8dp'
MDCard:
size_hint: None,None
size: 170,200
pos_hint: {'center_x':0.5,'center_y':0.8}
Image:
source: 'happydude.jpg'
MDLabel:
text: 'John Doe'
font_style: 'Subtitle1'
size_hint_y: None
height: self.texture_size[1]
theme_text_color: 'Custom'
text_color: (241/255,196/255,15/255,0.8)
MDLabel:
text: 'jonh83e@outlook.com'
font_style: 'Caption'
size_hint_y: None
height: self.texture_size[1]
theme_text_color: 'Custom'
text_color: (241/255,0.8)
ScrollView:
MDList:
OneLineIconListItem:
text: 'Profile'
theme_text_color: 'Custom'
text_color: (241/255,0.8)
on_press: screen_manager.current = "profile"
IconLeftWidget:
icon: 'face-profile-woman'
OneLineIconListItem:
text: 'Upload'
theme_text_color: 'Custom'
text_color: (241/255,0.8)
on_press: screen_manager.current = "upload"
IconLeftWidget:
icon: 'file-upload'
OneLineIconListItem:
text: 'Logout'
theme_text_color: 'Custom'
text_color: (241/255,0.8)
IconLeftWidget:
icon: 'logout'
Screen:
id: upload
name: 'upload'
MDLabel:
text: 'Lets upload some files'
halign: 'center'
MDRectangleFlatButton:
text: 'Back'
pos_hint: {'center_x': 0.5,'center_y': 0.2}
on_press: screen_manager.current = 'main_app_screen'
Screen:
id: messages
name: 'messages'
BoxLayout:
orientation: 'vertical'
MDToolbar:
title: "Messages Center"
MDIconButton:
icon: 'keyboard-return'
on_press: screen_manager.current = "main_app_screen"
theme_text_color: 'Custom'
md_bg_color: app.theme_cls.primary_color
# Im trying to add it here below:
ScrollView:
MDList:
id: container
#Widget:
解决方法
在不放弃之后，我终于找到了问题。默认情况下，文本颜色为白色，与屏幕颜色相同。我必须更改文本的颜色，为此，我使用了参数---> OneLineListItem（theme_text_color =“ Custom”， text_color =（241/255，196/255，15/255，0.8））
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