尝试在 kivy 上制作圆形按钮时出现问题

Question

from kivy.uix.button import Button
from kivy.uix.behaviors.button import ButtonBehavior
from kivy.uix.floatlayout import FloatLayout
from kivy.uix.image import Image
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.clock import Clock
from kivy.uix.widget import Widget
from kivy.graphics import BorderImage
from kivy.graphics import Color, RoundedRectangle, Rectangle, Triangle
from kivy.core.window import Window
#from kivy.config import Config
from kivy.uix.checkbox import CheckBox 
from kivy.uix.popup import Popup
from kivy.uix.scrollview import ScrollView
from kivy.uix.filechooser import FileChooserListView
from kivy.properties import ObjectProperty


class OpeningPage(FloatLayout):
    def __init__(self, **kwargs): 
        super().__init__(**kwargs)
        
        
        self.but = RoButton(text = 'START', pos = (350,100), font_size=14, size=(100,60), size_hint=(None,None))
        self.add_widget(self.but)
            
                   
class RoButton(Button):
    butt = ObjectProperty()
  
    def __init__(self, **kwargs): 
        super(RoButton, self).__init__(**kwargs)
        text = self.text
        with self.canvas:
           # Color(1., 0, 0)
            self.butt = RoundedRectangle( size= self.size, pos = self.pos, radius =[400])
                      

class UI(App):
    def build(self):
        
        self.screen_manager = ScreenManager()
        
        self.opening_page = OpeningPage()
        screen = Screen(name ='Opening_Page')
        screen.add_widget(self.opening_page)
        self.screen_manager.add_widget(screen)
         
        return self.screen_manager



if __name__ == '__main__':
    the_app = UI()
    the_app.run()

每次我尝试使用这段代码制作一个圆形按钮时，我都会在圆圈后面得到一个框。我尝试做 self.canvas.before 但仍然没有运气，如果可能的话答案可以用 python 而不是 .kv 语言谢谢。 Attached image of problem]1

Answer 1

您看到的框是正常的按钮图像。如果你不想那样，可能不使用按钮，而是使用 class RoButton(ButtonBehavior, Widget):.

尝试在 kivy 上制作圆形按钮时出现问题

Problem when trying to make a circular button on kivy

python

button

kivy

kivy-language

kivymd