我遇到了将数据结构解析为Kivy中的小部件的问题,然后可以访问该结构,并能够在屏幕上显示一个值,通过时钟间隔不断更新(不确定更好的做法)这个)。
我已经突出显示了以下(非工作)代码中的问题:
main.py
from kivy.app import App
from test import TestWidget
class TestApp(App):
def build(self):
testStructTable = {'randomVal1': 1, 'testVal': 2, 'randomVal2': 3}
# Issue here parsing the table like this?
return TestWidget(testStructTable)
if __name__ == '__main__':
TestApp().run()
test.py
from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.uix.relativelayout import RelativeLayout
from kivy.properties import NumericProperty
class TestWidget(RelativeLayout):
def __init__(self, testStructTable, **kwargs):
super(TestWidget, self).__init__(**kwargs)
Builder.load_file('test.kv')
sm = ScreenManager()
sm.add_widget(MainScreen(name='MainScreen'))
self.add_widget(sm)
# Error accessing the table
print self.testStructTable
# Have the update_test_val continuously called
#Clock.schedule_interval(MainScreen.update_test_val(testStructTable), 1 / 60)
class MainScreen(Screen):
def __init__(self, **kwargs):
testVal = NumericProperty(0)
def update_test_val(self, testStructTable):
# Get testVal from testStructTable
# Something like:
# self.testVal = testStructTable.testVal + 1 ?
self.testVal = self.testVal + 1
test.kv
<MainScreen>:
FloatLayout:
Label:
text: str(root.testVal)
font_size: 80
我的目标是通过访问该数据结构让testVal在屏幕上不断更新,但是我目前无法实现这一点,请您指教一下?
答案 0 :(得分:1)
在jest.mock('path/to/dispatcher.js')
方法中,您传递的内容为__init__
,然后您尝试访问不存在的testStructTable
,直到明确作出任务:
self.testStructTable