I want to display my second screen when a button is pressed but I get an error, TypeError: 'kivy.properties.StringProperty' object is not callable. If I remove the ScreenManager.current('ScreenTwo') from the code then the error goes away, however, I need some way to display the screen after saving the inputted data. Why am I getting this error and how would I fix it?
here is my code:
class TwoLayout(GridLayout):
def display_btn(self):
for key in MainApp.store:
streak_button = Button(text=key)
ids.streak_zone.add_widget(streak_button)
presentation = Builder.load_file("StreakStar.kv")
class MainApp(App):
def build(self): # build() returns an instance
self.store = JsonStore("streak.json")
return presentation
# creates the Streak object
def create(self):
obj = self.root.get_screen('one') # get info from ScreenOne
self.streak = Streak(obj.ids.action_entry.text, obj.ids.streak_entry.text,
obj.ids.day_entry.text, obj.ids.hour_entry.text,
obj.ids.minute_entry.text)
empty_error = "Make sure to fill out all boxes!"
popup = Popup(title="Not filled", content=Label(text=empty_error),
size_hint=(None, None), size=(300, 100))
# error handling and calculating total seconds
parsed = False
try:
total = ((int(self.streak.day) * 86400) + (int(self.streak.hour) * 3600) +
(int(self.streak.minute) * 60)) # convert into seconds
parsed = True
# delete later and replace with return
print("[seconds:", total,']' , "[action:", self.streak.action,']',
"[action number:", self.streak.action_num,']')
self.store.put(self.streak.action, action=self.streak.action,
action_num=self.streak.action_num, seconds=total,
score=self.streak.score)
ScreenManager.current('ScreenTwo')
except ValueError as error:
popup.open()
.kv code:
ScreenManagement:
transition: SlideTransition()
MainScreen:
ScreenOne:
ScreenTwo:
...
<TwoLayout>
<ScreenTwo>
on_pre_enter: TwoLayout.display_btn()
name: "two"
GridLayout:
cols: 2
rows: 1
BoxLayout:
id: streak_zone
orientation: 'vertical'
AnchorLayout:
anchor_x: "center"
anchor_y: "center"
Label:
id: high_lable
text: "Highest Streak: "
size_hint: None, None
font_size: 20
full traceback:
Traceback (most recent call last):
File "C:\Users\tonya\Desktop\realProjects\HaStreakual\HaStreakual.py", line 105, in <module>
MainApp().run()
File "C:\Python36\lib\site-packages\kivy\app.py", line 826, in run
runTouchApp()
File "C:\Python36\lib\site-packages\kivy\base.py", line 502, in runTouchApp
EventLoop.window.mainloop()
File "C:\Python36\lib\site-packages\kivy\core\window\window_sdl2.py", line 727, in mainloop
self._mainloop()
File "C:\Python36\lib\site-packages\kivy\core\window\window_sdl2.py", line 460, in _mainloop
EventLoop.idle()
File "C:\Python36\lib\site-packages\kivy\base.py", line 340, in idle
self.dispatch_input()
File "C:\Python36\lib\site-packages\kivy\base.py", line 325, in dispatch_input
post_dispatch_input(*pop(0))
File "C:\Python36\lib\site-packages\kivy\base.py", line 231, in post_dispatch_input
listener.dispatch('on_motion', etype, me)
File "kivy\_event.pyx", line 707, in kivy._event.EventDispatcher.dispatch
File "C:\Python36\lib\site-packages\kivy\core\window\__init__.py", line 1360, in on_motion
self.dispatch('on_touch_down', me)
File "kivy\_event.pyx", line 707, in kivy._event.EventDispatcher.dispatch
File "C:\Python36\lib\site-packages\kivy\core\window\__init__.py", line 1376, in on_touch_down
if w.dispatch('on_touch_down', touch):
File "kivy\_event.pyx", line 707, in kivy._event.EventDispatcher.dispatch
File "C:\Python36\lib\site-packages\kivy\uix\screenmanager.py", line 1191, in on_touch_down
return super(ScreenManager, self).on_touch_down(touch)
File "C:\Python36\lib\site-packages\kivy\uix\widget.py", line 460, in on_touch_down
if child.dispatch('on_touch_down', touch):
File "kivy\_event.pyx", line 707, in kivy._event.EventDispatcher.dispatch
File "C:\Python36\lib\site-packages\kivy\uix\relativelayout.py", line 288, in on_touch_down
ret = super(RelativeLayout, self).on_touch_down(touch)
File "C:\Python36\lib\site-packages\kivy\uix\widget.py", line 460, in on_touch_down
if child.dispatch('on_touch_down', touch):
File "kivy\_event.pyx", line 707, in kivy._event.EventDispatcher.dispatch
File "C:\Python36\lib\site-packages\kivy\uix\widget.py", line 460, in on_touch_down
if child.dispatch('on_touch_down', touch):
File "kivy\_event.pyx", line 707, in kivy._event.EventDispatcher.dispatch
File "C:\Python36\lib\site-packages\kivy\uix\behaviors\button.py", line 151, in on_touch_down
self.dispatch('on_press')
File "kivy\_event.pyx", line 703, in kivy._event.EventDispatcher.dispatch
File "kivy\_event.pyx", line 1214, in kivy._event.EventObservers.dispatch
File "kivy\_event.pyx", line 1098, in kivy._event.EventObservers._dispatch
File "C:\Python36\lib\site-packages\kivy\lang\builder.py", line 64, in custom_callback
exec(__kvlang__.co_value, idmap)
File "C:\Users\tonya\Desktop\realProjects\HaStreakual\StreakStar.kv", line 100, in <module>
on_press: app.create()
File "C:\Users\tonya\Desktop\realProjects\HaStreakual\HaStreakual.py", line 84, in create
ScreenManager.current('ScreenTwo')
TypeError: 'kivy.properties.StringProperty' object is not callable
[Finished in 17.269s]
答案 0 :(得分：0)
因为根是我的屏幕，所以我用它来指代Screen，下面是两个代码：
def change_screen(self, *args):
self.root.current = 'two'
self.display_btn()
parsed = False
try:
total = ((int(self.streak.day) * 86400) + (int(self.streak.hour) * 3600) +
(int(self.streak.minute) * 60)) # convert into seconds
parsed = True
# delete later just used to test
print("[seconds:", total,']' , "[action:", self.streak.action,']',
"[action number:", self.streak.action_num,']')
self.current_time = time.time()
self.count = self.current_time + total
# store streak attributes inside "streak.json"
self.store.put(self.streak.action, action=self.streak.action,
action_num=self.streak.action_num, seconds=total,
score=self.streak.score, delta=self.count)
self.change_screen(self)