【发布时间】:2016-11-13 14:11:57
【问题描述】:
我想在以后的项目中使用它,我只想通过单击MainScreen 上的按钮来打印来自TextInput 的用户输入,但是当我运行并单击带有文本“打印文本”的按钮时" 什么都没有发生,没有错误,也没有输出。
.kv 文件:
#: import FadeTransition kivy.uix.screenmanager.FadeTransition
ScreenManagement:
transition: FadeTransition()
MainScreen:
SecondScreen:
<MainScreen>:
name: "main"
Button:
on_release: root.get_text
text: "Print Text"
font_size: 50
size_hint:0.3,0.1
TextInput:
text:"Hello World"
size_hint: 0.35,0.25
pos_hint:{"right":1, "top":1}
color:1,0,0,1
id: user_text
Button:
color: 0,1,0,1
font_size: 25
size_hint: 0.3,0.25
text: "Continue"
on_release: app.root.current = "other"
pos_hint:{"right":1, "top":0}
<SecondScreen>:
name: "other"
FloatLayout:
Button:
color: 0,1,0,1
font_size: 25
size_hint: 0.3,0.25
text: "Back Home"
on_release: app.root.current = "main"
pos_hint:{"right":1, "top":1}
python代码:
from kivy.app import App
#kivy.require("1.9.1")
from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager, Screen , FadeTransition
from kivy.uix.widget import Widget
from kivy.graphics import Line
from kivy.uix.textinput import TextInput
class MainScreen(Screen):
def get_text(self,*args):
textinput= self.ids.user_text
user= TextInput.text
print(user)
class SecondScreen(Screen):
pass
class ScreenManagement(ScreenManager):
pass
gui = Builder.load_file("main.kv")
class MainApp(App):
def build(self):
return gui
MainApp().run()
【问题讨论】:
-
在 get_text 中你使用 'TextInput.text' 而不是 'textinput.text'。
标签: python-2.7 kivy kivy-language