Kivy RecycleView数据窗口小部件显示在一起

Question

我试图让这个自定义窗口小部件的列表在一个垂直列表中，彼此上下，但它们都出现在相同的位置

我不确定哪里出了问题。我尝试了一些我能想到的小事，但显然没有解决办法。

我是kivy的新手，所以你可能有的任何提示都会很棒。

scrathapp.py

import os
import kivy
import random
import time
from pytube import YouTube, Playlist, Search
from kivy.app import App
from kivy.uix.widget import Widget
from kivy.uix.gridlayout import GridLayout
from kivy.uix.floatlayout import FloatLayout
from kivy.uix.anchorlayout import AnchorLayout
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.relativelayout import RelativeLayout
from kivy.uix.scrollview import ScrollView
from kivy.uix.textinput import TextInput
from kivy.uix.button import Button
from kivy.uix.label import Label
from kivy.uix.image import Image
from kivy.uix.recycleview import RecycleView
from kivy.uix.recycleboxlayout import RecycleBoxLayout
from kivy.properties import ObjectProperty, StringProperty, NumericProperty, ListProperty, BooleanProperty
from kivy.logger import Logger
from kivy.config import Config
Config.set('graphics', 'resizable', True)

class YT_Widget(Widget):
yt = None
has_yt = BooleanProperty(False)
title = StringProperty()
author = StringProperty()
length = StringProperty()

def __init__(self, **kwargs):
super().__init__(**kwargs)
Logger.info("USE: YT_Widget")
self.title = "title"
self.author = "channel"
self.length = "0"
def add_yt(self, yt_obj):
if isinstance(yt_obj, YouTube):
self.yt = yt_obj
if not self.has_yt:
self.has_yt = True
def on_has_yt(self, instance, value):
Logger.info(f"n***********n type(value):{str(value)}n***********n")
if self.has_yt:
self.title = self.yt.title
self.author = self.yt.author
self.length = str(format(self.yt.length / 60, ".2f"))

def get_yt(self):
if not self.has_yt:
search = Search("fatheranarchy")
res = search.results
iyt = random.choice(res)
self.add_yt(iyt)
return self.yt

class YT_List(RecycleView):
yt_data = ListProperty([])

def addData(self, yt_list):
self.yt_data = [{"self.yt":item} for item in yt_list]
self.refresh_from_data()


class MainBox(BoxLayout):
def do_it(self):
sch = Search("death cab for cutie")
self.ids.yts.addData(sch.results)

class ScratchApp(App):
def build(self):
Logger.info("Start: Started App")
return MainBox()

if __name__ == "__main__":
scr = ScratchApp()
scr.run()

scratch.kv

#:kivy 2.0.0
<YLabel@Label>:
font_size:12
<YT_Widget>:
BoxLayout:
size:300,50
#        canvas.before:
#            Color:
#                rgba: (0.1, 0.5, 0.7, 1)
#            Rectangle:
#                size:self.size
#                pos:self.pos
BoxLayout:
Button:
id:yt_btn
size_hint: 0.09, 1.0
text:""
background_normal: "images/grn_btn.png"
background_down: "images/red_btn.png"
on_press:root.get_yt()
#                Image:
#                    id:yt_btn_img
#                    size:self.parent.width, self.parent.height
#                    source:
#                    center_x:self.parent.center_x
#                    center_y:self.parent.center_y
GridLayout:
rows:2
size_hint: 0.91, 1.0
BoxLayout:
size_hint: 0.91, 0.5
YLabel:
id:yt_title
text:root.title
BoxLayout:
size_hint: 0.91, 0.5
YLabel:
id:yt_author
text:root.author
YLabel:
id:yt_length
text:root.length

<YT_List>:
viewclass:"YT_Widget"
#    orientation: "vertical"
spacing: 40
padding:10, 10
#    space_x: self.size[0]/3
RecycleBoxLayout:
color:(0, 0.7, 0.4, 0.8)
default_size: None, dp(56)
default_size_hint: 0.4, None 
size_hint_y: None
height: self.minimum_height
orientation: 'vertical'

<MainBox>:
orientation:"vertical"
Button:
id:butt
text:"search"
on_press:root.do_it()
YT_List:
id:yts
data:self.yt_data

Answer 1

我让它正常工作。我所做的只是更改了.kv文件中的一些布局。我将在下面发布一些.kv。我在.py中做的唯一真正的更改是将YT_Widget更改为从BoxLayout类而不是FloatLayout扩展，不确定它是否对这个问题有任何影响。

无论如何，这种情况已经得到了纠正。谢谢。：(

<YT_Widget>:
Button:
id:yt_btn
size_hint: 0.09, 1.0
text:""
background_normal: "images/grn_btn.png"
background_down: "images/red_btn.png"
on_press:root.get_yt()
GridLayout:
rows:2
size_hint: 0.91, 1.0
BoxLayout:
size_hint: 0.91, 0.5
YLabel:
id:yt_title
text:root.title
BoxLayout:
size_hint: 0.91, 0.5
YLabel:
id:yt_author
text:root.author
YLabel:
id:yt_length
text:root.length