Question

我没有在python中动态更改按钮中的图像。我不知道对基维语languaje使用该属性是否可以使用该变量。

我想更改python语言，因为我可以管理该按钮具有这些属性的时间。

main.py

import kivy
kivy.require('1.10.0')

from kivy.app import App
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.button import Button
from kivy.properties import ObjectProperty
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.config import Config
from kivy.graphics import Color, Rectangle
from kivy.properties import StringProperty
from kivy.uix.image import Image
from kivy.properties import ListProperty, NumericProperty

Config.set('graphics', 'width', 800)
Config.set('graphics', 'height', 580)

global TipoF


class MainWid(ScreenManager):
    def __init__(self,**kwargs):
        super(MainWid,self).__init__()
        global TipoF

        SALIDA_IMG = StringProperty("X.png")

        ScrP = ScreenPrincipal(self)
        wid = Screen(name='start')
        wid.add_widget(ScrP)
        self.add_widget(wid)


class ScreenPrincipal(BoxLayout):
    global TipoF

    def __init__(self, mainwid, **kwargs):
        super(ScreenPrincipal,self).__init__()
        self.mainwid = mainwid

    def PulsaSalida(self, TipoFicha):
        SALIDA_IMG = StringProperty("Y.png")
        TipoF = TipoFicha
        print (TipoF)


class BoxInfo(BoxLayout):
    None

class BoxSalida(BoxLayout):
    None

class ButtonSalida(Button):
    None

class MainApp(App):
    title = "Fichaje"
    def build(self):
        return MainWid()

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

main.kv

<MainWid>:    
    canvas:
        Color:
            rgb: 1,1,1
        Rectangle:
            pos: self.pos
            size: self.size

<ScreenPrincipal>:
    #SALIDA_IMG: SALIDA_IMG
    orientation: 'vertical'
    id: SCRPRIN
    canvas:
        Color:
            rgb: .3,.3,.9,1
        Rectangle:
            pos: self.pos
            size: self.size
    BoxInfo:
        size_hint_y: .70

    BoxLayout:      
        canvas:
            Color:
                rgba: 1,1,1,1
            Rectangle:
                pos: self.pos
                size: self.size         
        size_hint_y: .30

        BoxSalida
            id:boxsalida
            ButtonSalida
                on_release:
                    SCRPRIN.PulsaSalida("S")

<BoxSalida>: 
    padding: 5
    canvas:
        Color:
            rgb: 1,.2,0 
        Rectangle:
            pos: self.pos
            size: self.size


<ButtonSalida>:
    background_color: (1,.1,.4,.8)
    text:"Salida"               
    id: BtnSalida
    Image:
        id: imagesal
        #source: SALIDA_IMG
        center_x: self.parent.center_x
        center_y: self.parent.center_y
        size:(130,130)

我尝试了几种方法，但都无效

最后一个错误：

NameError：名称'SALIDA_IMG'未定义

如何动态更改图像按钮python

0 个答案: