Python/Kivy : 将一个文本框从动态添加行中的输入移动到另一个文本框

Question

我正在使用 Python-2.7 和 kivy.Now 我正在做动态添加 row 点击 +Add More 按钮。
有人能告诉我如何通过输入键动态添加行当 enter 进入每个 row 的最后 TextBox 时，而不是在新的第一列上添加更多按钮和光标 focus排？

test.py

from kivy.uix.screenmanager import Screen
from kivy.app import App
from kivy.lang import Builder
from kivy.core.window import Window
from kivy.uix.boxlayout import BoxLayout
from kivy.properties import StringProperty

Window.clearcolor = (0.5, 0.5, 0.5, 1)
Window.size = (500, 400)

class User(Screen):

    def add_more(self):
        self.ids.rows.add_row()


class Row(BoxLayout):
    button_text = StringProperty("")


class Rows(BoxLayout):
    row_count = 0

    def __init__(self, **kwargs):
        super(Rows, self).__init__(**kwargs)
        self.add_row()

    def add_row(self):
        self.row_count += 1
        self.add_widget(Row(button_text=str(self.row_count)))


class Test(App):

    def build(self):
        return self.root


if __name__ == '__main__':
    Test().run()

test.kv

<Button@Button>:
    font_size: 15
    font_name: 'Verdana'


<TextInput@TextInput>:
    font_size: 15
    font_name: 'Verdana'
    padding_y: 3


<Row>:
    size_hint_y: None
    height: self.minimum_height
    height: 40

    Button:
        text: root.button_text
        size_hint_x: None
        top: 200

    TextInput:
        id:test1
        text: ' '
        width: 300
        multiline: False
        on_text_validate: test2.focus = True

    TextInput:
        id:test2
        text: ' '
        width: 300
        multiline: False

<Rows>:
    size_hint_y: None
    height: self.minimum_height
    orientation: "vertical"

User:
    BoxLayout:
        orientation: "vertical"
        padding : 20, 5

        ScrollView:
            Rows:
                id: rows


        BoxLayout:
            orientation: "horizontal"
            size_hint_x: .2
            size_hint_y: .2

            Button:
                text: "+Add More"
                on_press: root.add_more()

Answer 1

解决方案

1. 删除 +添加更多 按钮
2. 将focus: True 添加到第一个TextInput, test1
3. 添加回调，on_text_validate：app.root.add_more()到第二个TextInput，test2

test.kv

TextInput:
    id: test1
    focus: True
    text: ' '
    width: 300
    multiline: False
    on_text_validate: test2.focus = True

TextInput:
    id:test2
    text: ' '
    width: 300
    multiline: False
    on_text_validate: app.root.add_more()

输出