Python Kivymd卡按钮功能
我用kivy、kivymd和python制作了一个简单的应用程序。在md卡的发布功能不工作时,我的代码片段如下Python Kivymd卡按钮功能,python,kivy,Python,Kivy,我用kivy、kivymd和python制作了一个简单的应用程序。在md卡的发布功能不工作时,我的代码片段如下 from kivy.lang import Builder from kivymd.app import MDApp kv = ''' Screen: MDCard: size_hint: None, None size: "280dp", "180dp" pos_hint: {"center_x": .5,
from kivy.lang import Builder
from kivymd.app import MDApp
kv = '''
Screen:
MDCard:
size_hint: None, None
size: "280dp", "180dp"
pos_hint: {"center_x": .5, "center_y": .5}
ripple_behavior: True
on_release:print("worked")
'''
class TestCard(MDApp):
def build(self):
return Builder.load_string(kv)
TestCard().run()
你必须小心你在kv字符串中使用的标签。首先,您从屏幕声明之前的选项卡开始。那不行。然后,您必须在声明MDCard后设置选项卡以设置其属性。就像这样,它对我很有效:
from kivy.lang import Builder
from kivymd.app import MDApp
KV = '''
Screen:
MDCard:
size_hint: None, None
size: "280dp", "180dp"
pos_hint: {"center_x": .5, "center_y": .5}
ripple_behavior: True
on_release: print("worked")
'''
class TestCard(MDApp):
def build(self):
return Builder.load_string(KV)
TestCard().run()
怎么了,你收到错误信息了吗?您还需要在
MDCard
widget中缩进代码。代码的问题是python语句在.kv文件中不起作用。另一个问题是缩进。因此,只需更改缩进并在TestCard类中创建如下方法:
from kivy.lang import Builder
from kivymd.app import MDApp
kv = '''
Screen:
MDCard:
size_hint: None, None
size: "280dp", "180dp"
pos_hint: {"center_x": .5, "center_y": .5}
ripple_behavior: True
on_release: app.work()
'''
class TestCard(MDApp):
def build(self):
return Builder.load_string(kv)
def work(self):
print("worked")
TestCard().run()