如何从for循环获取用户输入的数据到kivymd中的python文件 [英] how to get data of user input from a for loop to python file in kivymd

问题描述

我正在制作一个将2个矩阵相乘的应用程序.为此，我创建了用户界面，但无法弄清楚如何在python文件中获取用户输入，因此我可以在那里进行操作.

i am making an app to multiply 2 matrix. for that i created the user interface but cant figure it out how to get the user input in my python file, so i can do operations there.

这是我的奇异果文件

#: import MDTextField kivymd.uix.textfield.MDTextField
<MyApp>:    
    NavigationLayout:
        ScreenManager:
            Screen:
                name: "screen1"
                GridLayout:
                    cols: 4
                    padding: 30
                    spacing: 20
                    size: root.width * 0.4, root.height * 0.8
                    row_force_default: True
                    row_default_height: 30
                    pos_hint: {'center_x': 0.5,'center_y':0.55}
                    size_hint: (None, None)
                    size: self.minimum_size
                    top: self.height
                    on_parent:
                        for i in range(16): self.add_widget(MDTextField(hint_text= 'sc', helper_text= 'hello', size_hint_x= None, width = 40))

                MDRectangleFlatButton:
                    text: 'back'
                    pos_hint: {'center_x': 0.5, 'center_y': 0.4}
                    on_release:
                        app.find_multiply()

因为我的MDTextField位于for循环内，所以我不能在那里使用id，因为从那里我将获得具有相同id的所有16个文本字段. 我如何在我的python文件中的app.find_multiply函数中获取全部16个文本字段输入，以便可以在那里执行操作.

since my MDTextField is inside a for loop, so i can't use an id there because from that i will get all 16 text field with the same id. how do i get my all 16 textfield input inside the app.find_multiply funcition in my python file, so i can perform operation there.

推荐答案

存储对文本字段的引用，并在以后访问它们以执行所需的操作.

Store references to your text fields, and access them later to do what you want.

我将删除您的on_parent，将GridLayout替换为您自己的类MyGridLayout(GridLayout):，并让该类执行以下操作:

I would delete your on_parent, replace the GridLayout with your own class MyGridLayout(GridLayout):, and have that class do:

def __init__(self, **kwargs):
    super().__init__(**kwargs)
    self.text_fields = [MdTextField(hint_text= 'sc', helper_text= 'hello', size_hint_x= None, width = 40))] for _ in range(16)]

然后，当您要访问它们时，可以通过例如entered_numbers = [int(field.text) for field in self.text_field].

Then later when you want to access them, you can iterate through e.g. entered_numbers = [int(field.text) for field in self.text_field].

当然，这只是一个基本示例，实际上，您需要进行错误检查等.

Of course that's just a basic example, in reality you'll want error checking etc.

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