kivy中带有验证按钮的文本输入框

Kivy 是Python中一个独立于平台的 GUI 工具。因为它可以在Android、IOS、linux和Windows等平台上运行。它基本上是用来开发Android应用程序的，但这并不意味着它不能在桌面应用程序上使用。

在本文中，我们将学习如何在 kivy 中添加带有文本输入的按钮，就像我们在输入和提交按钮中一样。在继续之前，您必须了解 kivy 中的 Textinput 小部件和 Button。

TextInput: The TextInput widget provides a box for editable plain text. Unicode, multiline, cursor navigation, selection and clipboard features are supported.

Button: The Button is a Label with associated actions that are triggered when the button is pressed (or released after a click/touch). We can add functions behind the button and style the button.

编程需要懂一点英语

要使用 Textinput 和按钮，您必须通过命令导入它 -

from kivy.uix.textinput import TextInput
from kivy.uix.button import Button

Basic Approach:
1) import kivy
2) import kivyApp
3) import Button
4) import Boxlayout
5) import Textinput
6) import BoxLayout
7) Set minimum version(optional)
8) create App class
9) return Layout/widget/Class(according to requirement)
10) Run an instance of the class

Kivy Tutorial – Learn Kivy with Examples.

编程需要懂一点英语

方法的实施——

main.py 文件

## Sample Python application demonstrating that   
## how to create Text Input with Button in kivy
  
# import kivy module     
import kivy 
      
# base Class of your App inherits from the App class.     
# app:always refers to the instance of your application 
from kivy.app import App 
      
# this restrict the kivy version i.e 
# below this kivy version you cannot 
# use the app or software 
kivy.require('1.9.1') 
      
# creates the button in kivy 
# if not imported shows the error 
from kivy.uix.button import Button
  
# The TextInput widget provides a 
# box for editable plain text 
from kivy.uix.textinput import TextInput 
  
# BoxLayout arranges widgets in either 
# in vertical fashion that 
# is one on top of another or in 
# horizontal fashion that is one after another. 
from kivy.uix.boxlayout import BoxLayout 
     
# to change the kivy default settings we use this module config 
from kivy.config import Config
  
# 0 being off 1 being on as in true / false 
# you can use 0 or 1 && True or False 
Config.set('graphics', 'resizable', True)
  
  
# Create the App class 
class BTNTEXTApp(App): 
  
    # defining build() 
    def build(self): 
  
                # Telling orientation 
        b = BoxLayout(orientation ='vertical', ) 
  
        # Adding the text input 
        t = TextInput(font_size = 30, 
                    size_hint_y = None, 
                    height = 100) 
  
        # Adding Button and styling
        f = Button(text ="Push Me !", 
                   font_size ="20sp", 
                   background_color =(.67, 1, .33, 1), 
                   color =(1, 1, 1, 1) )
  
        b.add_widget(t) 
        b.add_widget(f) 
           
        return b 
  
# Run the App 
if __name__ == "__main__": 
    BTNTEXTApp().run()

输出：

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