我想在kivy中动态更改网格布局中小部件的颜色 [英] I want to dynamically change the color of widget in grid Layout in kivy

问题描述

我想动态更改网格布局中小部件的颜色.
我怎样才能做到这一点? 我创建了一个6x6的小部件矩阵，并且需要动态闪烁网格布局中的图块.

I want to dynamically change the color of a widget in grid layout.
How can i achieve that? I create a widget matrix of 6x6 and i need to blink the tiles in the grid layout dynamically.

推荐答案

尝试创建网格小部件，然后仅使用预定功能更改小部件的颜色.下面的代码现在可能很完美，但可能会帮助您:

Try creating grid widgets and then just change color of the widgets with a scheduled function . Below code might now be perfect but may help you :

from kivy.app import App
from kivy.uix.gridlayout import GridLayout
from kivy.uix.button import Button
from kivy.graphics import Color
from kivy.clock import Clock
import random


class RootWidget(GridLayout):
    pass

class MainApp(App):

    def build(self):
        parent = GridLayout(cols=6)
        Colour=[0,0,0,0]
        self.create_button(parent,Colour,1,1)
        Clock.schedule_interval(lambda a:self.update(parent), 1)
        return parent

    def update(self,obj):
        print "I am update function"
        obj.clear_widgets()
        print "random value is ",random.random()
        for i in (1,2,3,4,5,6):
            for j in (1,2,3,4,5,6):
                c=[random.random(),random.random(),random.random(),random.random()]
                d=[i,j]
                self.create_button(obj,c,i,j)

    def create_button(self,obj,color,i,j):

        a=Button(background_color=color,text='Hello World %s%s'%(i,j))
        obj.add_widget(a)




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

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