Kivy：如何使用 RecycleView 在 Kivy 中顯示具有可變行的列表？ (Kivy: how to display a list with variable rows in Kivy with a RecycleView?)

問題描述

Kivy：如何使用 RecycleView 在 Kivy 中顯示具有可變行的列表？ (Kivy: how to display a list with variable rows in Kivy with a RecycleView?)

我是 Python 和 Kivy 的新手，我需要顯示一個包含可變行的列表，我正在嘗試使用回收視圖，但我認為我做錯了，我不知道它是怎麼做到的完全有效。這是我的代碼

class Introduccion(Screen):
numbers = ObjectProperty()
number_list = ObjectProperty([])

def Add_ToList(self):
    dat = self.numbers.text
    self.number_list.append([dat])

和我的.kv文件

<Introduccion>:
    numbers: numbers_input
    number_list: number_list_view
    RelativeLayout:
        pos_hint:{'center_y': 0.8, 'center_x':0.5}
        size_hint: None, None
        size: 700, 200
        pos: 200, 100
        canvas.before:
            Color:
                rgba: 1, 0.1, 0.2, 0
            Rectangle:
                pos: 0,0
                size: self.size
        TextInput:
            id: numbers_input
            size_hint: None, None
            pos: 520, 66
            size: 70, 30
            multiline: False
        Button:
            size_hint: None, None
            pos: 600, 66
            size: 50, 30
            text: "añadir"
            on_press: root.Add_ToList()
    BoxLayout:
        pos_hint:{'center_y': 0.8, 'center_x':0.5}
        size_hint: None, None
        size: 10, 10
        pos: 200, 100
        RecycleView:
            id: number_list_view
            viewclass: 'Label'
            RecycleBoxLayout:
                default_size: None, dp(26)
                default_size_hint: 1, None
                size_hint_y: None
                height: self.minimum_height
                orientation: 'vertical'

參考解法

方法 1:

The data of a RecycleView is a list of dictionaries with viewclass attributes as keys and the value of that attribute as values. Since your viewclass is Label, an appropriate key in the data dictionary is text. So your Introduccion class can be:

class Introduccion(Screen):
    numbers = ObjectProperty()
    number_list = ObjectProperty()

    def Add_ToList(self):
        self.number_list.data.append({'text': str(self.numbers.text)})

The Add_ToList() method adds a new dictionary to the RecycleView data on each call. In each case, the key is text (referring to the text attribute of Label), and the value is whatever is in the TextInput.

(by juan sebastian、John Anderson)

參考文件

1. Kivy: how to display a list with variable rows in Kivy with a RecycleView? (CC BY‑SA 2.5/3.0/4.0)