[英]Getting TextInput value with ScreenManager in Kivy 1.10 and Python 2.7.9
在Python 2.7.9中使用Kivy 1.10.0和Python 2.7.9時,我試圖獲取用戶在單擊Button(my_button2)時輸入的TextInput值。盡管我已經能夠使用GridLayout進行此操作,但看來我正在使用的方法是無法與BoxManager一起使用ScreenManager。 收到的錯誤是:AttributeError:當my_button2時,“ ScreenTwo”對象沒有屬性“ inpt”
單擊“下一屏”按鈕后,將帶我到用戶輸入文本值的頁面,並且“打印”按鈕應將其打印出來
請看下面:
import kivy
from kivy.app import App
from kivy.uix.screenmanager import Screen, ScreenManager
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.button import Button
from kivy.uix.textinput import TextInput
class ScreenOne(Screen):
def __init__ (self,**kwargs):
super (ScreenOne, self).__init__(**kwargs)
my_box1 = BoxLayout(orientation='vertical')
my_button1 = Button(text="Next Screen ",size_hint_y=None,size_y=100)
my_button1.bind(on_press=self.changer)
my_box1.add_widget(my_button1)
self.add_widget(my_box1)
def changer(self,*args):
self.manager.current = 'screen2'
class ScreenTwo(Screen):
def __init__(self,**kwargs):
super (ScreenTwo,self).__init__(**kwargs)
layout = BoxLayout(orientation='vertical')
self.add_widget(layout)
inpt = TextInput(text="Some text ",size_y=50)
layout.add_widget(inpt)
my_button2 = Button(text="Print ")
my_button2.bind(on_press=self.click)
layout.add_widget(my_button2)
Home_btn = Button(text="Back")
Home_btn.bind(on_press=self.home)
layout.add_widget(Home_btn)
def click(self,my_button2):
entered_value = self.inpt.text
print entered_value
def home(self,*args):
self.manager.current = 'screen1'
class TestApp(App):
def build(self):
my_screenmanager = ScreenManager()
screen1 = ScreenOne(name='screen1')
screen2 = ScreenTwo(name='screen2')
my_screenmanager.add_widget(screen1)
my_screenmanager.add_widget(screen2)
return my_screenmanager
if __name__ == '__main__':
TestApp().run()
第二屏
當您使用self時,您嘗試訪問該類的成員,但是在inpt中,它不是變量,因為它是任何變量,如果您想成為該類的成員,則必須提出self,在您的情況下進行更改:
inpt = TextInput(text="Some text ",size_y=50)
layout.add_widget(inpt)
至:
self.inpt = TextInput(text="Some text ",size_y=50)
layout.add_widget(self.inpt)
注意: 如果您不會遇到很多此類問題,建議您閱讀OOP基礎知識。
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.