在kivy-python

Question

我是Kivy-pyhton的新手。我正在使用python3来使用kivy-tool

我在kivy-tool

中开发了一个小应用程序

我正在制作一个应用程序从用户获取数据，保存在文件中，然后单击任何按钮，我想在小部件上显示数据

应用程序的代码是： -

from kivy.app import App
from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.uix.label import Label
from kivy.uix.textinput import TextInput
import os
from kivy.uix.scrollview import ScrollView
from kivy.properties import ObjectProperty
from kivy.uix.gridlayout import GridLayout
from kivy.core.window import Window

from kivy.uix.popup import Popup
from kivy.uix.button import Button
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.stacklayout import StackLayout


Builder.load_string('''
<MenuScreen>:
    BoxLayout:
        Button:
            text: 'Add New Employee'
            on_press: root.manager.current = 'add_staff'
        Button:
            text: 'View Employee Profile'
            on_press: root.manager.current = 'read_staff'
        Button:
            text: 'Salary report'


<read_New_staff>:
    # nam: str(name_input)
    # job: job_input
    GridLayout:
        cols: 2
        Label:
            id: label
            font_size: 24
            bold: True
            height: root.height * .9
            size_hint_y: None
            # text: "file Content show here....."
            text_size: self.width, None
            height: self.texture_size[1]
            valign: 'middle'
            halign: 'center'

        Button:
            text: 'Back to menu'
            on_press: root.manager.current = 'menu'
        Button:
            text: 'Show Data'
            on_press: app.show()

<Lay>:
    cols: 1
    label: label
    padding: 20
    Label:
        height: root.height * .1
        size_hint_y: None
        text: 'Read what is below'
        font_size: 24
        bold: True
    ScrollView:
        height: root.height * .85
        size_hint_y: None
        Label:
            id: label
            font_size: 24
            bold: True
            height: root.height * .9
            size_hint_y: None
            text: 'we will rock you'
            text_size: self.width, None
            height: self.texture_size[1]
            # valign: 'middle'
            # halign: 'center'


<Add_new_staff>:
    # nam: str(name_input)
    # job: job_input
    GridLayout:
        cols: 2
        Label:
            text: 'Product Name'
        TextInput:
            id: name_input
        Label:
            text: 'Price'
        TextInput:
            id: price_input
        Label:
            text: 'Priority'
        TextInput:
            id: priority_input
        Button:
            text: 'Back to menu'
            on_press: root.manager.current = 'menu'
        Button:
            text: 'Save'
            on_press: app.save(name_input.text, price_input.text,priority_input.text)
''')


class MenuScreen(Screen):
    pass

class Add_new_staff(Screen):
    pass

class read_New_staff(Screen):
    pass

class Lay(GridLayout):
    label = ObjectProperty()

sm = ScreenManager()
sm.add_widget(MenuScreen(name='menu'))
sm.add_widget(Add_new_staff(name='add_staff'))
sm.add_widget(read_New_staff(name='read_staff'))


class TestApp(App):
    def build(self):
        l = Lay()
        fob = open('/home/vyclean14/Desktop/Rohit_kivy/test.txt','r')
        content = fob.read()
        fob.close()
        l.label.text = content
        self.hello = Button(text = "hello")
        self.hello.bind(on_press = self.show)       
        return sm  #l

    def save(self, name,price,priority):
        fob = open('/home/vyclean14/Desktop/Rohit_kivy/test.txt','a')
        fob.write("Product Name:- " + name + "\n")
        fob.write("Price:- " + price + "\n")
        fob.write("Priority:- " + priority + "\n")
        fob.write("--------------------\n")
        fob.close()    

    def show(self, *args):
        l = Lay()
        fob = open('/home/vyclean14/Desktop/Rohit_kivy/test.txt','r')
        content = fob.read()
        fob.close()
        # l.label.text = content
        print(content)



if __name__ == '__main__':
    TestApp().run()
    # NewApp().run()

主要观点：

当用户点击添加员工时，他输入的数据已添加到.txt文件

中

当我点击“查看员工详细信息”时，显示数据会打开。

单击显示数据我想在第一象限中显示数据

我怎样才能实现这个

谢谢