这段代码:
from kivy.app import App
from kivy.uix.gridlayout import GridLayout
from kivy.uix.label import Label
from kivy.uix.textinput import TextInput
class LoginScreen(GridLayout):
def __init__(self, **kwargs):
super(LoginScreen, self).__init__(**kwargs)
self.cols = 2
self.add_widget(Label(text='User Name'))
self.username = TextInput(multiline=False)
self.add_widget(self.username)
self.add_widget(Label(text='password'))
self.password = TextInput(password=True, multiline=False)
self.add_widget(self.password)
class MyApp(App):
def build(self):
return LoginScreen()
if __name__ == '__main__':
MyApp().run()
按预期工作并生成此窗口(窗口的大小有所调整):
然而,当在 kivy language 中实现相同的示例时它失败了:
Python 文件:
from kivy.app import App
from kivy.uix.gridlayout import GridLayout
class LoginScreen(GridLayout):
pass
class MyApp(App):
def build(self):
return LoginScreen()
if __name__ == '__main__':
MyApp().run()
我的.kv文件:
#:kivy 1.0
<LoginScreen>:
GridLayout:
cols: 2
Label:
text: "Username"
TextInput:
multiline: False
Label:
text: "Password"
TextInput:
multiline: False
产生(再次调整大小):
为什么会这样,我该如何解决?
最佳答案
你不需要在 kivy 文件中创建 GridLayout
。
从 my.kv
文件中删除 GridLayout:
,如下所示:
#:kivy 1.0
<LoginScreen>:
cols: 2
Label:
text: "Username"
TextInput:
multiline: False
Label:
text: "Password"
TextInput:
multiline: False
否则,将在 LoginScreen 中创建另一个 GridLayout。
关于python - 以 python 呈现,但不以 kivy 语言呈现,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/20676219/