Python Kivy标签面板。如何从另一个类调用switch_?
在下面的代码中,我需要使用Python Kivy标签面板。如何从另一个类调用switch_?,python,kivy,Python,Kivy,在下面的代码中,我需要使用编辑按钮选项卡上的按钮切换到编辑输入选项卡。我真的需要这样切换,因为我需要在预定义类EditButton和EditInput之间切换。这是一个较大程序的一部分,在布局的不同位置有几个按钮,我无法在类中定义它们。我尝试了很多方法调用switch\u to(引用中的示例),但都不起作用 代码 from kivy.animation import Animation from kivy.app import App from kivy.clock import Clock f
编辑按钮选项卡上的按钮切换到编辑输入选项卡
。我真的需要这样切换,因为我需要在预定义类EditButton
和EditInput
之间切换。这是一个较大程序的一部分,在布局的不同位置有几个按钮,我无法在
类中定义它们。我尝试了很多方法调用switch\u to
(引用中的示例),但都不起作用
代码
from kivy.animation import Animation
from kivy.app import App
from kivy.clock import Clock
from kivy.uix.floatlayout import FloatLayout
from kivy.uix.scrollview import ScrollView
from kivy.uix.tabbedpanel import TabbedPanel, TabbedPanelStrip
from kivy.lang import Builder
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.tabbedpanel import TabbedPanel, TabbedPanelHeader
from kivy.factory import Factory
theRoot = """
#:import Factory kivy.factory.Factory
<EditButton>
orientation: 'vertical'
Button:
text: 'Switch to Edit Screen'
on_press: root.change_tab('edit_screen')
<EditInput>
orientation: 'vertical'
TextInput:
<UnCloseableHeader>
color: 0,0,0,1
disabled_color: self.color
# variable tab_width
text: 'tabx'
size_hint_x: None
width: self.texture_size[0] + 40
BoxLayout:
pos: root.pos
size_hint: None, None
size_y: 20
padding: 3
Label:
id: lbl
text: root.text
<MainTabbedPanel@BoxLayout>
size_hint: (1, 1)
default_tab: edit_button_tab
tab_width: 130
FloatLayout:
EditButton:
id: edit_button
EditInput:
id: edit_input
UnCloseableHeader:
id: edit_button_tab
text: 'Edit'
content: edit_button.__self__
UnCloseableHeader:
id: edit_input_tab
text: 'Edit Tab'
content: edit_input.__self__
MainTabbedPanel:
"""
class EditInput(BoxLayout):
def __init__(self, **kwargs):
super(EditInput, self).__init__(**kwargs)
class EditButton(BoxLayout):
def __init__(self, **kwargs):
super(EditButton, self).__init__(**kwargs)
def change_tab(self, tab):
print('TAB', tab)
#call switch method from MainTabbedPanel
'''the way I've tried
mtp = MainTabbedPanel
mtp.switch_to('edit_input_tab')'''
class MainTabbedPanel(TabbedPanel):
def __init__(self, **kwargs):
super(MainTabbedPanel, self).__init__(**kwargs)
def switch(self, tab):
print("SWITCH TO", tab, self.ids.keys())
self.switch_to(self.ids[tab])
class UnCloseableHeader(TabbedPanelHeader):
pass
Factory.register('UnCloseableHeader', cls=UnCloseableHeader)
sm = Builder.load_string(theRoot)
class TabbedPanelApp(App):
def build(self):
return sm
if __name__ == '__main__':
TabbedPanelApp().run()
使用App.get\u running\u App()
获取应用程序的实例
使用root
获取根目录的实例
片段
笔记
- 在kv中,您定义了一个动态类,
。这应该是一个阶级规则,
因为在Python代码中,您已经定义了
类MainTabbedPanel(TabbedPanel):
即继承不匹配和
类类型不匹配
当我将mtp.ids.edit\u input
更改为mtp.ids.edit\u input\u tab
后,它会工作。令人惊叹的
class EditButton(BoxLayout):
def __init__(self, **kwargs):
super(EditButton, self).__init__(**kwargs)
def change_tab(self, tab):
print('TAB', tab)
MainTabbedPanel.tab = tab
MainTabbedPanel()
#call switch method from MainTabbedPanel
'''the way I've tried
mtp = MainTabbedPanel
mtp.switch_to('edit_input_tab')'''
class MainTabbedPanel(TabbedPanel):
tab = ''
def __init__(self, **kwargs):
super(MainTabbedPanel, self).__init__(**kwargs)
self.tabs_showing = True
if self.tab != '':
Clock.schedule_once(self.switch)
def switch(self, dt):
print("SWITCH TO", self.tab, self.ids.keys())
self.switch_to(self.ids[self.tab])
def change_tab(self, tab):
print('TAB', tab)
mtp = App.get_running_app().root
mtp.switch_to(mtp.ids.edit_input_tab)