2
我最近开始学习Kivy并使用它。今天我遇到了一个问题,我不确定这是基维的一个错误还是代表我的误解。这是一个简化版本。Kivy无法连接kv语言的on_enter回拨
我正在开发一个GUI,在顶部有一个文本输入用于搜索。我千伏文件看起来像这样:
#:kivy 1.0
#:import kivy kivy
<SearchPanel>:
searchquery: searchquery
AnchorLayout:
orientation: 'vertical'
anchor_x: 'center'
anchor_y: 'top'
padding: 10
TextInput:
id: searchquery
text: 'What to search for'
size_hint_x: 0.98
size_hint_y: None
height: 30
on_enter: root.search()
应用程序代码如下所示:
# -*- coding: utf-8 -*-
import kivy
kivy.require('1.4.1')
from kivy.app import App
from kivy.uix.anchorlayout import AnchorLayout
class SearchPanel(AnchorLayout):
def search(self):
pass
class ExampleApp(App):
def build(self):
return SearchPanel()
if __name__ == '__main__':
ExampleApp().run()
的问题是,当我运行的应用程序,我得到这个回溯:
Traceback (most recent call last):
File "example.py", line 24, in <module>
ExampleApp().run()
File "/home/testing/.virtualenvs/kivy2/local/lib/python2.7/site-packages/Kivy-1.4.1-py2.7-linux-x86_64.egg/kivy/app.py", line 523, in run
root = self.build()
File "example.py", line 20, in build
return SearchPanel()
File "/home/testing/.virtualenvs/kivy2/local/lib/python2.7/site-packages/Kivy-1.4.1-py2.7-linux-x86_64.egg/kivy/uix/anchorlayout.py", line 62, in __init__
super(AnchorLayout, self).__init__(**kwargs)
File "/home/testing/.virtualenvs/kivy2/local/lib/python2.7/site-packages/Kivy-1.4.1-py2.7-linux-x86_64.egg/kivy/uix/layout.py", line 60, in __init__
super(Layout, self).__init__(**kwargs)
File "/home/testing/.virtualenvs/kivy2/local/lib/python2.7/site-packages/Kivy-1.4.1-py2.7-linux-x86_64.egg/kivy/uix/widget.py", line 113, in __init__
Builder.apply(self)
File "/home/testing/.virtualenvs/kivy2/local/lib/python2.7/site-packages/Kivy-1.4.1-py2.7-linux-x86_64.egg/kivy/lang.py", line 1217, in apply
self._apply_rule(widget, rule, rule)
File "/home/testing/.virtualenvs/kivy2/local/lib/python2.7/site-packages/Kivy-1.4.1-py2.7-linux-x86_64.egg/kivy/lang.py", line 1346, in _apply_rule
crule, idmap)})
File "_event.pyx", line 184, in kivy._event.EventDispatcher.bind (/tmp/easy_install-PMy51_/Kivy-1.4.1/kivy/_event.c:2038)
KeyError: 'enter'
显然我不能插入on_enter
回调到根布局,我做错了什么?如果我改变on_enter
与on_text
它的作品。
对于后人,[这里是文档](http://kivy.org/docs/api-kivy.uix.textinput.html#kivy.uix.textinput.TextInput),解释这一点。此外,请务必设置'multiline:False'触发此(在上述文档中解释)。 –