我有Python代码:
class Screen3(Screen):
def __init__(self, **kwargs):
self.scv = ScrollView()
self.bl_main = BoxLayout()
self.bl_main.padding = [20, 20, 20, 20]
self.bl_main.spacing = 50
self.bl_main.orientation = 'vertical'
super(Screen, self).__init__(**kwargs)
def on_enter(self, *args):
for i in [f'Button {i+1}' for i in range(20)]:
b = Button()
b.size_hint = None, None
b.size = 350, 350
b.text = i
anch = AnchorLayout()
anch.anchor_x = 'right'
anch.add_widget(b)
self.bl_main.add_widget(anch)
self.scv.add_widget(self.bl_main)
self.add_widget(self.scv)
而且我有kivy
代码:
Screen3:
name: 'screen3'
BoxLayout:
orientation: vertical
AnchorLayout:
anchor_x: 'center'
anchor_y: 'top'
MDToolbar:
title: "History"
left_action_items: [['menu', lambda x: nav_drawer.set_state()], ['skip-backward', lambda x: app.change_screen('main screen', screen_manager)]]
elevation: 12
在这里您可以看到我的应用。https://pasteboard.co/J7KTdeR.jpg
我如何纠正这两点?
[请帮助我。
您的图标按钮不起作用,因为您在ScrollView
中添加的on_enter()
的默认size_hint
为(1,1),因此会填充整个Screen3
(即使[ C0]是透明的)。 ScrollView
会抓住鼠标的点击,因此图标按钮从不会看到鼠标的点击。
[以类似的方式,ScrollView
(bl_main)也具有默认的BoxLayout
,因此它的高度将是size_hint
的高度,并且它将尝试将20 ScrollView
装入该Buttons
]。每个height
都获得其高度的份额,这是不够的,因此它们重叠。
解决方法是在Button
中构建ScrollView
和BoxLayout
以利用自动绑定并设置其大小。这是执行此操作的代码版本:
kv
注意from kivy.lang import Builder
from kivy.uix.button import Button
from kivy.uix.screenmanager import Screen, ScreenManager
from kivymd.app import MDApp
class Screen3(Screen):
def on_enter(self, *args):
for i in [f'Button {i+1}' for i in range(20)]:
b = Button()
b.size_hint = None, None
b.size = 350, 350
b.text = i
# anch = AnchorLayout()
# anch.anchor_x = 'right'
# anch.add_widget(b)
# self.ids.bl_main.add_widget(anch)
self.ids.bl_main.add_widget(b)
kv = '''
Screen3:
name: 'screen3'
BoxLayout:
orientation: 'vertical'
size_hint_y: None
height: toolbar.height
pos_hint: {'center_x':0.5, 'top':1}
# AnchorLayout:
# anchor_x: 'center'
# anchor_y: 'top'
MDToolbar:
id: toolbar
title: "History"
left_action_items: [['menu', lambda x: nav_drawer.set_state()], ['skip-backward', lambda x: app.change_screen('main screen', screen_manager)]]
elevation: 12
ScrollView:
size_hint: (None, None)
height: root.height - toolbar.height
width: 390 # Button width plus BoxLayout padding
pos_hint: {'right':1}
BoxLayout:
id: bl_main
orientation: 'vertical'
size_hint_y: None
height: self.minimum_height
padding: [20, 20, 20, 20]
spacing: 50
'''
class TestApp(MDApp):
def build(self):
sm = ScreenManager()
sm.add_widget(Builder.load_string(kv))
return sm
TestApp().run()
的尺寸,位置的设置以及height: self.minimum_height
的使用。有关此原因,请参考BoxLayout
。
我也已注释掉您对ScrollView documentation的使用,因为它是多余的。