我使用OSC库在python中编写了一个服务，这里是我的代码：
def __init__(self, * * kwargs):
super(ElectronApp, self).__init__( * * kwargs)
self.electronController = ElectronController()
self.button = ElectronTHView()
def build(self):
return Builder.load_file('ElectronApp.kv')
def build(self):
self.button = ElectronTHView()
self.service = None
self.start_service()
osc.init()
oscid = osc.listen(port = 3002)
osc.bind(oscid, self.display_message, '/message')
osc.bind(oscid, self.date, '/date')
Clock.schedule_interval(lambda * x: osc.readQueue(oscid), 0)
self.root = Builder.load_file('ElectronApp.kv')
return self.root
....
def date(self, message, * args):
print(message[2])
# here i get message from my service and i want to update text on button
self.button.ids.tem.text = message[2]
class ElectronAppMain(BoxLayout):
pass
class ElectronAppMainView(TabbedPanel):
pass
class ElectronAppBottomBar(BoxLayout):
pass
class ElectronButton(Button):
pass
class ElectronTHView(BoxLayout):
pass
* .KV文件代码：
ElectronAppMain:
<ElectronAppMain>:
padding: "-2dp"
orientation: "vertical"
canvas.before:
Rectangle:
size: self.size
pos: self.pos
source: "background.png"
ElectronAppMainView:
ElectronAppBottomBar:
<ElectronAppBottomBar>:
size_hint: 1, None
height: "50dp"
padding: "0dp"
orientation: "horizontal"
spacing: "0dp"
ElectronButton:
text: "STOP"
size_hint: 1, None
height: "50dp"
on_release:
ElectronButton:
text: "EXIT"
size_hint: 1, None
height: "50dp"
on_release:
<ElectronAppMainView>:
tab_pos: "top_left"
do_default_tab: False
tab_height: "50dp"
tab_width: root.width/3
background_image:
font_size: "12dp"
background_normal:
background_down:
text: "T/H"
font_name: "fonts/Roboto-Medium.ttf"
ElectronTHView:
TabbedPanelItem:
font_size: "12dp"
background_normal:
background_down:
text: "CUSTOM"
font_name: "fonts/Roboto-Medium.ttf"
TabbedPanelItem:
font_size: "12dp"
background_normal:
background_down:
text: "PATTERN"
font_name: "fonts/Roboto-Medium.ttf"
<ElectronTHView>:
orientation: "vertical"
spacing: "5dp"
padding: "10dp"
ElectronButton:
id: temp
background_normal: ....
background_down:
size_hint: 1, .5
height: self.height
text: "Temperature"
on_release:
ElectronButton:
background_normal:
background_down:
size_hint: 1, .5
height: self.height
text: "Humidity"
on_release:
当我尝试更新
中的文字时，我尝试了更多选项，但没有尝试 def date(self, message, *args):
print(message[2])
#here i get message from my service and i want to update text on button
self.button.ids.tem.text = message[2]
我收到这样的错误：
Sat Oct 22 16:35:27 2016
OSC callback /date caused an error: 'super' object has no attribute '__getattr__'
Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/kivy/lib/osc/OSC.py", line 288, in dispatch
callbackfunction(message, source)
File "main.py", line 128, in date
self.button.ids.temp.text = '1'
File "kivy/properties.pyx", line 757, in kivy.properties.ObservableDict.__getattr__ (kivy/properties.c:11882)
AttributeError: 'super' object has no attribute '__getattr__'
---------------------
[INFO ] [Base ] Leaving application in progress...
[ERROR ] [OSC ] Error in Tuio recv()
Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/kivy/lib/osc/oscAPI.py", line 229, in run
message = self.socket.recv(65535)
error: [Errno 4] Interrupted system call
我是kivy的新人......提前感谢您的帮助！
答案 0 :(得分：0)
您是否正在尝试更新＆＃34; ElectronButton＆＃34;带有日期（自我，消息，* args）功能的小部件，通过＆＃34; on_release＆＃34;事件？即使这不是重点，但这个例子可以帮助你：
首先，您应该将date（）放在正确的位置，以便可以从.kv文件中正确调用它。例如：
class ElectronAppBottomBar(BoxLayout):
def date(self, widget, message, *args):
widget.text = message[2]
从那时起.kv文件：
<ElectronAppBottomBar>:
size_hint: 1, None
height: "50dp"
padding: "0dp"
orientation: "horizontal"
spacing: "0dp"
ElectronButton:
text: "STOP"
size_hint: 1, None
height: "50dp"
on_release:root.date(self,message) #or app.date(self,message) if date is definded at the App level
这只是一个例子。说到：
self.button.ids.tem.text = message[2]
根据您所在的课程类别，self.ids.tem.text = message [2]或self.parent.ids.tem.text = message [2]等内容可能足以获得您想要的内容。检查official documentation如何浏览窗口小部件树。希望这会有所帮助。
答案 1 :(得分：0)
首先，大家好，原谅我忘了分享我的问题的解决方案！ 这很简单 - 但我很困惑，并没有立刻理解 我所做的一切 - 我刚刚以这种模式重写了* .kv文件：
ElectronAppMain:
<ElectronAppMain>:
padding: "-2dp"
orientation: "vertical"
canvas.before:
Rectangle:
size: self.size
pos: self.pos
source: "background.png"
ElectronMainView:
tab_pos: "top_left"
do_default_tab: False
tab_height: "50dp"
tab_width: root.width/3
TabbedPanelItem:
font_size: "12dp"
text: "T/U"
font_name: "fonts/Roboto-Medium.ttf"
ElectronTHView:
orientation: "vertical"
spacing: "5dp"
padding: "5dp"
ElectronLabel:
id: date
color: 0,0,0,0.54
halign: "center"
font_size: "16dp"
size_hint: 1, 1
height: self.texture_size[1]
text_size: self.width, None
font_name: "fonts/Roboto-Regular.ttf"
ElectronButton:
id: test
on_press: app.send()
TabbedPanelItem:
font_size: "12dp"
text: "CUSTOM"
font_name: "fonts/Roboto-Medium.ttf"
TabbedPanelItem:
font_size: "12dp"
text: "PATTERN"
font_name: "fonts/Roboto-Medium.ttf"
再次感谢所有人！