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初学者在这里。

我不完全确定下面代码中的所有内容是否正确，但它似乎可以调整由 recycleview 创建的按钮的大小，以适应每个按钮的文本。

问题： 如何在 on_release_m 方法中访问（暂时打印）单击按钮的 ID？

谢谢你的时间！

from kivy.config import Config
Config.set('graphics', 'width', '270')
Config.set('graphics', 'height', '550')
from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.recycleview import RecycleView
from kivy.uix.recycleboxlayout import RecycleBoxLayout
from kivy.lang import Builder

# I included this in case you have to use it for the answer instead of the python code:
Builder.load_string("""
<MyRecycleBoxLayout>:
    # orientation: 'vertical'
    # default_size: None, None
    # default_size_hint: 1, None
    # size_hint_y: None
    # height: self.minimum_height


<MyButton>:
    # font_size: 30
    # text_size: self.width, None
    # size_hint_y: None
    # height: self.texture_size[1]

""")

class MyRecycleBoxLayout(RecycleBoxLayout):
    def __init__(self,**kwargs):
        super().__init__(**kwargs)

        self.orientation= 'vertical'
        self.default_size= (None, None)
        self.default_size_hint=( 1, None)
        self.size_hint_y= None
        self.bind(minimum_height=self.setter("height"))

class MyButton(Button):
    def __init__(self,**kwargs):
        super().__init__(**kwargs)

        self.font_size=30
        self.bind(width=lambda s, w: s.setter("text_size")(s, (w, None)))
        self.size_hint_y = None
        self.bind(texture_size=self.setter("size"))


class RV(RecycleView):
    def __init__(self,**kwargs):
        super().__init__(**kwargs)

        self.myRecycleBoxLayout=MyRecycleBoxLayout()

        self.data.clear()
        for i in range(150):
            self.data.append({f"text":f"{i} "*50,"id": f"btn_{i}","on_release":self.on_release_m})
        self.add_widget(self.myRecycleBoxLayout)

    def on_release_m (self,*args):
        #Here print the clicked button id and not the first's:
        print(self.data[0]["id"])
        pass



class RecApp(App):
    def build(self):
        self.rv=RV()
        self.rv.viewclass=MyButton
        return self.rv

RecApp().run()
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1 回答 1

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您可以使用以下方法将其他信息传递给您的on_release_m()方法partial：

    for i in range(150):
        self.data.append({f"text": f"{i} "*50, "id": f"btn_{i}", "on_release": partial(self.on_release_m, i)})

然后，在on_release_m()方法中：

def on_release_m(self, i):
    #Here print the clicked button id and not the first's:
    print(self.data[i]["id"])
于 2021-12-04T20:23:42.413 回答