我的kivy应用程序使用按钮，这些按钮与单独的json文件中的json元素相对应。
这将是按钮Eight
"Eight": {
"action": "Eight",
"delay": 1.55975283E9,
"seconds": 0,
"score": 0,
"delta": 1.55974682E9,
"grace_sec": 6000
}
当我按下按钮时，分数将每次加1。但是，当我添加另一个按钮时，分数将重置为0。
我真的不确定这是什么，因为有一点我的代码没有做到这一点。我一定已经改变了一些而没有注意到。我认为问题可能与kivy的store函数有关，但我不确定。
我将包括我认为可能会影响json文件的所有代码。
class MainApp(App):
def build(self): # build() returns an instance
self.store = JsonStore("streak.json") # file that stores the streaks:
Clock.schedule_interval(self.check_streak, 1/30.) # used to call functions dynamicaly
Clock.schedule_interval(self.score_gone, 1/30.)
Clock.schedule_interval(self.update_high, 1/30.)
return presentation
此功能更长，但我只包括得分加1的部分。
def check_streak(self, dt):
for child in reversed(self.root.screen_two.ids.streak_zone.children):
name = child.id
with open("streak.json", "r") as read_file:
data = json.load(read_file)
for key in data.keys():
if key == name:
delay = data.get(key, {}).get('delay') # get value of nested key 'delay'
self.honey = data[key]['delta']
float(self.honey)
...
elif delay > time.time() > self.honey: # on time (green)
child.background_normal = ''
child.background_color = [0, 1, 0, .95]
child.unbind(on_press=self.early_click)
child.bind(on_press=self.add_score)
child.bind(on_press=self.display_streak)
child.bind(on_press=self.draw_streak)
child.unbind(on_press=self.late_click)
# add 1 to score and store in json file
def add_score(self, obj):
name = obj.id
with open("streak.json", "r") as file:
read = json.load(file)
for key in read.keys():
if key == name:
with open("streak.json", "r+") as f:
data = json.load(f)
data[key]['score']+=1
grace_sec = data.get(key, {}).get('grace_sec')
new_delay = time.time() + grace_sec
data[key]['delay'] = new_delay
seconds = data.get(key, {}).get('seconds')
new_delta = time.time() + seconds
data[key]['delta'] = new_delta
f.seek(0)
json.dump(data, f, indent=4)
f.truncate()
我之所以加入它，是因为它是主应用程序的一个实例，并且由于Clock函数而总是被调用，但我不认为这是问题的根源，因此您可以忽略是否情况。
# changes score to 0 and stores in json file
def score_gone(self, dt):
for child in self.root.screen_two.ids.streak_zone.children:
name = child.id
color = child.background_color
with open("streak.json", "r") as file:
read = json.load(file)
if color == [1, 0, 0, .95]: # red
if read[name]['score'] != 0: #stops slow down from Clock
with open("streak.json", "r+") as f: # fix score not reseting to 0
data = json.load(f)
data[name]['score'] = 0
f.seek(0)
json.dump(data, f, indent=4)
f.truncate()
elif read[name]['score'] == 0: #stops slow down from Clock
pass
此功能可根据上一页中输入的文本创建条纹。
# creates the Streak object
def create(self):
...
# store streak attributes inside "streak.json"
self.store.put(self.streak.action, action=self.streak.action,
delay=grace, seconds=total,
score=0, delta=self.count, grace_sec=grace_sec)
self.change_screen(self) # changes to screen that displays buttons
此功能显示按钮。
# display the names of the streaks in a list on PageTwo
def display_btn(self):
no_data = "You have no stored streaks!"
popup_2 = Popup(title="No Streaks!", content=Label(text=no_data),
size_hint=(None, None), size=(300, 100))
with open("streak.json", "r") as read_file:
data = json.load(read_file)
for value in data.values():
if value['delta'] is not None:
print(f"action={value['action']}, delta={value['delta']}, grace={value['delay']}")
streak_button = StreakButton(id=(value['action']), text=(value['action'] + " " + "[" + str(value['score']) + "]"),
color=(0,0,0,1), size=(400, 50),
size_hint=(None, None))
self.root.screen_two.ids.streak_zone.add_widget(streak_button)
...
离开页面时，所有按钮小部件都将被删除，进入页面时，将调用display_btn。对我来说，很奇怪的是，即使json文件更新为新分数，程序在添加新按钮之前如何记住分数值。如果我要给按钮Eight加1的分数，则退出程序；该应用程序会记住该值为1。因此，如果我添加一个2值，然后添加一个新按钮，则Eight的分数值将重置为1，因为这是我关闭该应用程序之前的值。
EDIT
这是create中的所有代码，用于从页面内部的文本输入中收集数据。您所看到的数学运算只是将输入转换为秒，以便以后的功能比较时间（我不确定是否有必要）
def create(self):
obj = self.root.get_screen('one') # get info from ScreenOne
self.streak = Streak(obj.ids.action_entry.text, obj.ids.delay_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!" # not in use yet
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
self.current_time = time.time()
self.count = self.current_time + total
grace = (int(self.streak.delay) * 60) + self.count # aka delay
grace_sec = (int(self.streak.delay) * 60) + total
parsed = True
# delete later just used to test
print("[seconds:", total, ']', "[action:", self.streak.action, ']',
"[grace:", grace, ']')
# store streak attributes inside "streak.json"
self.store.put(self.streak.action, action=self.streak.action,
delay=grace, seconds=total,
score=0, delta=self.count, grace_sec=grace_sec)
self.change_screen(self)
except ValueError as error:
popup.open()
create使用Streak的实例
class Streak():
def __init__(self, action, delay, day, hour, minute, score=0, delta=0):
self.action = action
self.delay = delay
self.day = day
self.hour = hour
self.minute = minute
self.score = score
self.delta = delta
答案 0 :(得分：1)
由于self.store方法在build()方法中填充了添加前的图像，因此重置了JSON文件。将self.store = JsonStore("streak.json")添加到create()方法中。
def create(self):
self.store = JsonStore("streak.json")
答案 1 :(得分：0)
当您添加新信息时json重置，您需要在添加新信息之前添加新信息，我认为这会导致问题