将文本从文本输入传递到 Kivy 中的标签

Question

我试图让 textinput 小部件将文本传递给回调函数，该回调函数在 printbutton 调用时用文本制作标签，当您考虑它时应该相当简单。但我有个习惯，只见树木不见森林。 Anyhoo，如果有人能解决这个问题，那就写代码吧：P

import kivy
kivy.require('1.5.1')
from kivy.app import App
from kivy.uix.label import Label
from kivy.uix.button import Button
from kivy.uix.gridlayout import GridLayout
from kivy.uix.textinput import TextInput

class kivyentrywidget(GridLayout):

    def __init__(self, **kwargs):
        super(kivyentrywidget, self).__init__(**kwargs)
        self.cols = 2
        self.add_widget(Label(text='What do you want to print?'))
        self.text_input = TextInput(multiline=False)
        self.add_widget(self.text_input)
        self.printbutton = Button(text='Print')
        self.printbutton.bind(on_press=callback)
        self.add_widget(self.printbutton)

    def callback(self):
        return Label(text=self.text_input.text)



class Firstapp(App):
    def build(self):
        return kivyentrywidget()

if __name__ == '__main__':
    Firstapp().run()

Answer 1

def callback(self,evt=None): #not sure if kivy sends event info so added optional arg just in case
    return self.add_widget(Label(text=self.text_input.text))

也许......对kivy不太熟悉，但我认为可以做到......

还有

self.printbutton.bind(on_press=self.callback)

应该解决你的其他问题