我如何使用带有图标按钮 KivyMD 的 MDDropdownMenu？

Question

我想制作一个与图标按钮连接的下拉菜单，单击该按钮将显示一个确认对话框。但是当我点击图标按钮打开对话框时，这个错误信息

MDDropdownMenu() takes no arguments

弹出。这是我第一次制作下拉列表，我还是个新手，所以我不知道该怎么做。

代码

def drop_down(self):
    self.dropdown = MDDropdownMenu()
    dropmenu = self.root.ids['Chat_Screen'].ids['dropdown']
    self.dropdown = MDDropdownMenu(dropmenu = dropmenu, items=[{"viewclass": "MDMenuItem", "text": "option1"}], width_mult=4)
    self.dropdown.open()

这是在 MDApp 类中

.kv 文件

MDIconButton:
                #icon: 'phone-outline'
                id:LIST
                name:'LIST'
                theme_text_color: 'Custom'
                text_color: app.theme_cls.primary_color
                user_font_size: 16
                size_hint: (None, None)
                pos_hint: {'center_y':.5}
                size: 30, 30
                padding: 0
                md_bg_color: app.theme_cls.bg_darkest if app.theme_cls.theme_style == 'Light' else app.theme_cls.bg_dark
            MDIconButton:
                id: dropdown
                icon: 'dots-vertical'
                theme_text_color: 'Custom'
                text_color: app.theme_cls.primary_color
                user_font_size: 20
                size_hint: (None, None)
                pos_hint: {'center_y':.5}
                size: 30, 30
                padding: 0
                md_bg_color: app.theme_cls.bg_darkest if app.theme_cls.theme_style == 'Light' else app.theme_cls.bg_dark
                on_press: app.drop_down()
                

Answer 1

尝试改变：

self.dropdown = MDDropdownMenu(dropmenu = dropmenu, items=[{"viewclass": "MDMenuItem", "text": "option1"}], width_mult=4)

到：

self.dropdown = MDDropdownMenu(caller=dropmenu, items=[{"viewclass": "MDMenuItem", "text": "option1"}], width_mult=4)