Kivy 游戏中的重启按钮

Question

我正在尝试为井字游戏制作重启按钮，但我无法在 boxlayout 中更改 kivy gridlayout。 这个RESTART按钮怎么做？

我尝试过使用instance.text，但我只能更改重启按钮的文本

from kivy.app import App 
from kivy.uix.gridlayout import GridLayout 
from kivy.uix.button import Button 
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.widget import Widget 

symbols = ["x", "o"]; switch = 0


class TicApp(App):

    def choose(self, instance):
        global switch
        if switch % 2 == 0:
            instance.text = symbols[0]
            switch += 1
        else:
            instance.text = symbols[1]
            switch += 1    

    def restart(self, instance):
        """Pleasee help me to make restart button"""


    def build(self):
        global bl
        global gl
        gl = GridLayout(rows=3, cols=3)
        bl = BoxLayout(orientation = "vertical", spacing=5)
    
        #grid 3x3 of tic-tac-toe
        for i in range(9):
            gl.add_widget(Button(text="", font_size=60, on_press=self.choose))

        #making vertical boxlayout to add RESTART button
        bl.add_widget(gl)
    
        bl.add_widget(Button(text="Restart",font_size=35, size_hint=(1, .2), on_press=self.restart))
        return bl

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

Answer 1

您只想重置Buttons 的文本吗？如果是这样，请尝试：

def restart(self, instance):
    global gl
    for w in gl.children:
        w.text = ''