我想在圆形图像的右侧添加文本。有人告诉我使用标签来执行此操作，但是我不知道如何实际执行此操作。它必须是动态的，所以如果您必须使用KV语言来执行此操作，是否可以向我展示即使在KV文件中制作按钮时也如何保持按钮动态。如果可能的话，我想将其保留在Python文件中，但是如果KV方式更好，那就这样吧。
from kivy.app import App
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.properties import ObjectProperty
from kivy.uix.boxlayout import BoxLayout
from kivy.lang import Builder
from kivy.clock import mainthread
from kivy.uix.button import Button
from kivy.uix.popup import Popup
from kivy.uix.label import Label
from kivy.uix.button import Button
from kivy.properties import BooleanProperty, StringProperty
from kivy.uix.image import AsyncImage
from kivy.uix.behaviors import ButtonBehavior
from kivy.uix.image import Image
Builder.load_file('main.kv')
login_plz = Popup(title='Please login',
content=Label(text='You need to login first'),
size_hint=(None, None), size=(400, 400),
auto_dismiss=True)
class Menu(BoxLayout):
access_denied = BooleanProperty(True)
class ScreenLogIn(Screen):
@mainthread
def verify_credentials(self):
popup = Popup(title='Try again',
content=Label(text='Wrong Email/Password'),
size_hint=(None, None), size=(400, 400),
auto_dismiss=True)
try:
if len(self.ids.login.text) > 20 or len(self.ids.passw.text) > 32:
popup.open()
elif self.ids.login.text == "a" and self.ids.passw.text == "a":
App.get_running_app().root.access_denied = False
self.manager.current = "match"
else:
App.get_running_app().root.access_denied = True
popup.open()
except Exception as e:
pass
class ScreenNearUsers(Screen):
@mainthread
def on_enter(self):
if App.get_running_app().root.access_denied is True:
self.manager.current = 'login'
login_plz.open()
else:
for i in xrange(31):
button = Button(text="B_" + str(i))
self.ids.grid.add_widget(button)
class ScreenMatch(Screen):
def on_enter(self, *args):
if App.get_running_app().root.access_denied is True:
self.manager.current = 'login'
login_plz.open()
else:
for i in range(10):
src = "http://placehold.it/480x270.png&text=slide-%d&.png" % i
image = AsyncImage(source=src, allow_stretch=True, keep_ratio=False, opacity=1, size_hint=(1, 1.3),
pos_hint={'center_x': 0.5, 'center_y': 0.75}, border=True)
self.ids.carousel.add_widget(image)
class ImageButton(ButtonBehavior, Image):
def __init__(self, **kwargs):
super(ImageButton, self).__init__(**kwargs)
class ScreenChats(Screen):
def on_enter(self, *args):
if App.get_running_app().root.access_denied is True:
self.manager.current = 'login'
login_plz.open()
else:
# This is the button with the image below
for i in range(4):
button = ImageButton(source=('Trifecta.png'), size=(200,200), size_hint=(None,None), text='some text')
self.ids.chat_layout.add_widget(button)
class ScreenUserProfile(Screen):
def on_enter(self, *args):
if App.get_running_app().root.access_denied is True:
self.manager.current = 'login'
login_plz.open()
else:
pass
class Manager(ScreenManager):
screen_log_in = ObjectProperty(None)
screen_near_user = ObjectProperty(None)
screen_match = ObjectProperty(None)
screen_chats = ObjectProperty(None)
screen_user_profile = ObjectProperty(None)
class MenuApp(App):
def build(self):
return Menu()
def on_start(self):
self.current_screen = 'login'
if __name__ == '__main__':
MenuApp().run()
主要Kv：
<Menu>:
manager: screen_manager
orientation: "vertical"
id: action
ActionBar:
size_hint_y: 0.1
background_color: 0, 0, 1000, 10
background_normal: ""
ActionView:
ActionPrevious:
app_icon:""
with_previous: False
markup:True
font_size:"16dp"
ActionButton:
id: near_users
size_hint: 1, 1
height: self.texture_size[ 1 ]
width: self.texture_size[ 0 ] + 40
minimum_width: self.texture_size[ 0 ] + 60
halign: "center"
icon: 'icons/internet.png'
disabled: True if root.access_denied else False
on_press: root.manager.current = 'near_users'
ActionButton:
id: matching_bar
size_hint: 1, 1
height: self.texture_size[ 1 ]
width: self.texture_size[ 0 ] + 40
minimum_width: -self.texture_size[ 0 ] + 60
halign: "center"
text: "Matching"
disabled: True if root.access_denied else False
on_press: root.manager.current= 'match'
ActionButton:
id: chat
size_hint: 1, 1
height: self.texture_size[ 1 ]
width: self.texture_size[ 0 ] + 40
minimum_width: self.texture_size[ 0 ] + 60
halign: "center"
text: "chat"
disabled: True if root.access_denied else False
on_press: root.manager.current = 'chats'
ActionButton:
id: profile
size_hint: 1, 1
height: self.texture_size[ 1 ]
width: self.texture_size[ 0 ] + 40
minimum_width: self.texture_size[ 0 ] + 60
halign: "center"
text: "Profile"
disabled: True if root.access_denied else False
on_press: root.manager.current = 'profile'
Manager:
id: screen_manager
<ScreenLogIn>:
id: login_screen
BoxLayout:
orientation: "vertical"
padding: 20, 20
spacing: 50
TextInput:
id: login
size_hint_y: None
multiline: False
TextInput:
id: passw
size_hint_y: None
multiline: False
password: True # hide password
Button:
text: "Log In"
on_release: root.verify_credentials()
<ScreenNearUsers>:
ScrollView:
GridLayout:
id: grid
size_hint_y: None
height: self.minimum_height
cols: 2
row_default_height: '20dp'
row_force_default: True
spacing: 0, 0
padding: 0, 0
<ScreenMatch>:
name: 'Carousel'
fullscreen: True
BoxLayout:
size_hint_y: None
height: '48dp'
Button:
text: 'last user'
id: last_user
Button:
text: 'like'
Button:
text: 'super like'
on_release: carousel.load_previous()
Button:
text: 'Dislike'
on_release: carousel.load_next()
AnchorLayout:
anchor_x: 'center'
anchor_y: 'center'
Carousel:
id: carousel
loop: last_user.state == 'down'
<ScreenChats>:
ScrollView:
GridLayout:
id: chat_layout
size_hint_y: None
height: self.minimum_height
cols: 1
row_default_height: '125dp'
row_force_default: True
spacing: 0, 0
padding: 0, 0
<ScreenUserProfile>:
Button:
text: "stuff4"
<Manager>:
id: screen_manager
screen_log_in: screen_log_in
screen_near_users: screen_near_users
screen_match: screen_match
screen_chats: screen_chats
screen_user_profile: screen_user_profile
ScreenLogIn:
id: screen_log_in
name: 'login'
manager: screen_manager
ScreenNearUsers:
id: screen_near_users
name: 'near_users'
manager: screen_manager
ScreenMatch:
id: screen_match
name: 'match'
manager: screen_manager
ScreenChats:
id: screen_chats
name: 'chats'
manager: screen_manager
ScreenUserProfile:
id: screen_user_profile
name: 'profile'
manger: screen_manager
答案 0 :(得分：0)
ButtonBehaviour不支持文本。试试这个：
button = Button()
button.size_hint=(None,None)
button.size=(200,200)
button.text = "some text"
button.background_normal = 'Trifecta.png';
答案 1 :(得分：0)
我自己找到了答案，使用ButtonBehavior时，您只能以KV语言在按钮内放置标签。然后，您可以使用Factory从python文件访问按钮。需要ImageButton类中的“ text = StringProperty（）”，因为存在某种类型的错误，该错误导致生成的firs按钮没有文本。
from kivy.app import App
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.properties import ObjectProperty
from kivy.uix.boxlayout import BoxLayout
from kivy.lang import Builder
from kivy.clock import mainthread
from kivy.uix.button import Button
from kivy.uix.popup import Popup
from kivy.uix.label import Label
from kivy.uix.button import Button
from kivy.properties import BooleanProperty, StringProperty
from kivy.uix.image import AsyncImage
from kivy.uix.behaviors import ButtonBehavior
from kivy.uix.image import Image
from kivy.factory import Factory
Builder.load_file('main.kv')
login_plz = Popup(title='Please login',
content=Label(text='You need to login first'),
size_hint=(None, None), size=(400, 400),
auto_dismiss=True)
class Menu(BoxLayout):
access_denied = BooleanProperty(True)
class ScreenLogIn(Screen):
def verify_credentials(self):
popup = Popup(title='Try again',
content=Label(text='Wrong Email/Password'),
size_hint=(None, None), size=(400, 400),
auto_dismiss=True)
try:
if len(self.ids.login.text) > 20 or len(self.ids.passw.text) > 32:
popup.open()
elif self.ids.login.text == "a" and self.ids.passw.text == "a":
App.get_running_app().root.access_denied = False
self.manager.current = "match"
else:
App.get_running_app().root.access_denied = True
popup.open()
except Exception as e:
pass
class ScreenNearUsers(Screen):
@mainthread
def on_enter(self):
if App.get_running_app().root.access_denied is True:
self.manager.current = 'login'
login_plz.open()
else:
for i in xrange(31):
button = Button(text="B_" + str(i))
self.ids.grid.add_widget(button)
class ScreenMatch(Screen):
def on_enter(self, *args):
if App.get_running_app().root.access_denied is True:
self.manager.current = 'login'
login_plz.open()
else:
for i in range(10):
src = "http://placehold.it/480x270.png&text=slide-%d&.png" % i
image = AsyncImage(source=src, allow_stretch=True, keep_ratio=False, opacity=1, size_hint=(1, 1.3),
pos_hint={'center_x': 0.5, 'center_y': 0.75}, border=True)
self.ids.carousel.add_widget(image)
class ImageButton(ButtonBehavior, Image):
text = StringProperty()
class ScreenChats(Screen):
def get_user_chat(self):
self.manager.current = 'match'
def on_enter(self, *args):
if App.get_running_app().root.access_denied is True:
self.manager.current = 'login'
login_plz.open()
else:
for i in range(4):
btn = Factory.ImageButton(text='sometxt', source='Trifecta.png')
self.ids.chat_layout.add_widget(btn)
class ScreenUserProfile(Screen):
def on_enter(self, *args):
if App.get_running_app().root.access_denied is True:
self.manager.current = 'login'
login_plz.open()
else:
pass
class Manager(ScreenManager):
screen_log_in = ObjectProperty(None)
screen_near_user = ObjectProperty(None)
screen_match = ObjectProperty(None)
screen_chats = ObjectProperty(None)
screen_user_profile = ObjectProperty(None)
class MenuApp(App):
def build(self):
return Menu()
def on_start(self):
self.current_screen = 'login'
if __name__ == '__main__':
MenuApp().run()
Kv：
<Menu>:
manager: screen_manager
orientation: "vertical"
id: action
ActionBar:
size_hint_y: 0.1
background_color: 0, 0, 1000, 10
background_normal: ""
ActionView:
ActionPrevious:
app_icon:""
with_previous: False
text:" [b]Dhobiwala.com[/b]"
markup:True
font_size:"16dp"
ActionButton:
id: near_users
size_hint: 1, 1
height: self.texture_size[ 1 ]
width: self.texture_size[ 0 ] + 40
minimum_width: self.texture_size[ 0 ] + 60
halign: "center"
icon: 'icons/internet.png'
disabled: True if root.access_denied else False
on_press: root.manager.current = 'near_users'
ActionButton:
id: matching_bar
size_hint: 1, 1
height: self.texture_size[ 1 ]
width: self.texture_size[ 0 ] + 40
minimum_width: -self.texture_size[ 0 ] + 60
halign: "center"
text: "Matching"
disabled: True if root.access_denied else False
on_press: root.manager.current= 'match'
ActionButton:
id: chat
size_hint: 1, 1
height: self.texture_size[ 1 ]
width: self.texture_size[ 0 ] + 40
minimum_width: self.texture_size[ 0 ] + 60
halign: "center"
text: "chat"
disabled: True if root.access_denied else False
on_press: root.manager.current = 'chats'
ActionButton:
id: profile
size_hint: 1, 1
height: self.texture_size[ 1 ]
width: self.texture_size[ 0 ] + 40
minimum_width: self.texture_size[ 0 ] + 60
halign: "center"
text: "Profile"
disabled: True if root.access_denied else False
on_press: root.manager.current = 'profile'
Manager:
id: screen_manager
<ScreenLogIn>:
id: login_screen
BoxLayout:
orientation: "vertical"
padding: 20, 20
spacing: 50
TextInput:
id: login
size_hint_y: None
multiline: False
TextInput:
id: passw
size_hint_y: None
multiline: False
password: True # hide password
Button:
text: "Log In"
on_release: root.verify_credentials()
<ScreenNearUsers>:
ScrollView:
GridLayout:
id: grid
size_hint_y: None
height: self.minimum_height
cols: 2
row_default_height: '20dp'
row_force_default: True
spacing: 0, 0
padding: 0, 0
<ScreenMatch>:
name: 'Carousel'
fullscreen: True
BoxLayout:
size_hint_y: None
height: '48dp'
Button:
text: 'last user'
id: last_user
Button:
text: 'like'
Button:
text: 'super like'
on_release: carousel.load_previous()
Button:
text: 'Dislike'
on_release: carousel.load_next()
AnchorLayout:
anchor_x: 'center'
anchor_y: 'center'
Carousel:
id: carousel
loop: last_user.state == 'down'
<ImageButton>:
size_hint: None, None
size: 200, 200
text: ''
Label:
Label:
text: root.text
pos: root.x - -75, root.y - 0
size: root.size
<ScreenChats>:
ScrollView:
GridLayout:
id: chat_layout
size_hint_y: None
height: self.minimum_height
cols: 1
row_default_height: '125dp'
row_force_default: True
spacing: 0, 0
padding: 0, 0
<ScreenUserProfile>:
Button:
text: "stuff4"
<Manager>:
id: screen_manager
screen_log_in: screen_log_in
screen_near_users: screen_near_users
screen_match: screen_match
screen_chats: screen_chats
screen_user_profile: screen_user_profile
ScreenLogIn:
id: screen_log_in
name: 'login'
manager: screen_manager
ScreenNearUsers:
id: screen_near_users
name: 'near_users'
manager: screen_manager
ScreenMatch:
id: screen_match
name: 'match'
manager: screen_manager
ScreenChats:
id: screen_chats
name: 'chats'
manager: screen_manager
ScreenUserProfile:
id: screen_user_profile
name: 'profile'
manger: screen_manager