android - KIVY:如何清除其所有子项的网格布局

Question

我正在尝试删除网格布局中的所有按钮，这些按钮是在按下按钮时动态创建的。我尝试使用 clear_widget() 来执行此操作，但这不起作用。现在我将 ID 分配给那些动态创建的按钮并尝试删除它们，但它也不起作用

python

def drinksSelect(self,value):  # creating a button by referring the id of the layout in which to create button
    drinkImagePath = {'pepsi': 'drinksPictures/pepsi.png','7up': 'drinksPictures/7up.png'}
    if self.root.a_s.l < self.root.a_s.limit: # You know what I mean
        st = 'number'
        img = myImage(source= drinkImagePath[value], size=(200,20), id=st)
        self.root.a_s.ids['place_remaining'].add_widget(img)
        self.root.a_s.l += 1

def checkout(self): #when this fucntion is called, it should clear the gridLayout with id drinksLayout
    #self.root.a_s.ids.drinksLayout.clear_widget(self.root.a_s.ids.place_remaining)
    st = 'number'
    self.root.a_s.ids.place_remaining.remove_widget(self.root.a_s.ids.st)

千伏

 GridLayout:
        id: drinksLayout
        size_hint_y: 0.3
        orientation: 'horizontal'
        rows: 1
        GridLayout:
            id: place_remaining
            rows: 1
            size_hint_x: 80
        Button:
            id: label1
            width: 200 
            size_hint: None,0.4
            background_normal:'1.jpg'
            text: 'Checkout'
            on_release: app.checkout()

Answer 1

你只需要稍微修改一下你的checkout方法

    def checkout(self):  # when this fucntion is called, it should clear the gridLayout with id drinksLayout
        self.root.a_s.ids.place_remaining.clear_widgets()
        #but don't forget
        self.root.a_s.l = 0