Question

我需要设置一个Button，当按下输入按钮时，我可以使用Screen语言返回.kv。以下是我在Python中的内容：

def build(self):
    button = Button()
    start(Enter, button)
    bind(on_press = partial(sm.setter('current'), (sm, 'MenuScreen')))

如果在.kv / kivy lanaguage中按下'Enter'键，我如何制作允许我返回页面的Button？

Answer 1

That's quite a weird syntax you have up there and you talk about "Enter key" although the code obviously does something completely different, so I think you want just this little piece:

<Enter>:
    on_press: sm.current = 'MenuScreen'

These lines require an additional class Enter to exist i.e. you wouldn't do this (and I'm confused by that line):

start(Enter, button)

but you would do for example this:

.py

class Enter(Button):
    pass

class My(App):
    def build(self):
        pass

.kv

ScreenManager:
    id: sm
    Screen:
        name: 'OtherScreen'
        Enter:

    Screen:
        name: 'MainScreen'

<Enter>:
    on_press: sm.current = 'MainScreen'

使用Kivy语言切换屏幕的键值按钮

1 个答案: