我对python有点生疏，所以希望我只是在做一些愚蠢的事情。我正在尝试使用 appJar 和 OpenWeatherMap 创建一个简单的天气小部件，当网络响应返回时，UI 没有按预期更新。我阅读了 appJar 文档，我知道我需要在另一个线程上启动网络请求，然后在响应返回时将 UI 更改排队，但它似乎不起作用。到目前为止，这是一个非常简单的应用程序，以下是整个代码：
app.py
from appJar import gui
import datetime, pyowm, WeatherUtils
from WeatherInfo import WeatherInfo
LES_LAT = 40.714080
LES_LON = -73.985890
app = gui()
app.setBg("#363636")
app.setSize("Fullscreen")
# Date and time
def addDateTimeLabel(labelName: str, text: str) -> None:
app.addLabel(labelName, text)
app.setLabelFg(labelName, "White")
app.setLabelFont(labelName, size=32)
now = datetime.datetime.now()
date = now.strftime("%A %B %e, %Y")
time = now.strftime("%l:%M %p")
addDateTimeLabel("date", date)
addDateTimeLabel("time", time)
# Weather UI
addDateTimeLabel('current_weather', 'Loading...')
addDateTimeLabel('forecast', 'Loading...')
app.go()
# Weather Data Fetch
def setCurrentWeatherData(weather_data: WeatherInfo) -> None:
weather_string = 'Current: ' + weather_data.status + " " + str(weather_data.temp) + ", High: " + str(weather_data.max_temp) + ", Low: " + str(weather_data.min_temp)
app.queueFunction(app.setLabel, 'current_weather', weather_string)
app.thread(WeatherUtils.getCurrentTemperature, LES_LAT, LES_LON, setCurrentWeatherData)
WeatherUtils.py
from typing import Callable, List
from WeatherInfo import WeatherInfo
import pyowm, datetime
from pyowm.weatherapi25.observation import Observation
OPEN_WEATHER_MAP_API_KEY = "XXXXXXXX"
owm = pyowm.OWM(OPEN_WEATHER_MAP_API_KEY)
def createWeatherInfoFromResponse(observation: Observation) -> WeatherInfo:
weather_data = observation.get_weather()
temperature_data = weather_data.get_temperature('fahrenheit')
if temperature_data is None:
return
weather = WeatherInfo(temperature_data.get('temp'), temperature_data.get('temp_min'), temperature_data.get('temp_max'), weather_data.get_detailed_status().title())
weather.snow = weather_data.get_snow()
weather.icon_url = weather_data.get_weather_icon_url()
weather.sunrise_time = weather_data.get_sunrise_time()
weather.sunset_time = weather_data.get_sunset_time()
weather.humidity = weather_data.get_humidity()
wind_data = weather_data.get_wind()
if wind_data is not None:
weather.wind_direction = wind_data.get('deg')
weather.wind_speed = wind_data.get('speed')
weather.reference_time = weather_data.get_reference_time()
weather.location = observation.get_location().get_name()
return weather
def getCurrentTemperature(lat: float, lon: float, callback: Callable[[WeatherInfo], None]) -> None:
weather_observation = owm.weather_at_coords(lat, lon)
weather = createWeatherInfoFromResponse(weather_observation)
if weather is not None:
callback(weather)
WeatherInfo.py
class WeatherInfo:
def __init__(self, temp: float, min_temp: float, max_temp: float, status: str):
self.temp = temp
self.min_temp = min_temp
self.max_temp = max_temp
self.status = status
self.snow = None
self.humidity = None
self.icon_url = None
self.sunrise_time = None
self.sunset_time = None
self.wind_direction = None
self.wind_speed = None
self.reference_time = None
self.location = None
def get_sunrise_time(self) -> str:
return self.sunrise_time.strftime('%l:%M %p')
def get_sunset_time(self) -> str:
return self.sunset_time.strftime('%l:%M %p')
def get_reference_time(self) -> str:
return self.reference_time.strftime('%l:%M %p')
任何建议都非常感谢。谢谢！
在这里找到了答案。对于其他为此苦苦挣扎的人，需要在将标签本身添加到 UI 之前对标签更新调用进行排队。以下是似乎按预期工作的 app.py 代码：
from appJar import gui
import datetime, pyowm, WeatherUtils
from WeatherInfo import WeatherInfo
LES_LAT = 40.714080
LES_LON = -73.985890
app = gui()
app.setBg("#363636")
app.setSize("Fullscreen")
# Date and time
def addDateTimeLabel(labelName: str, text: str) -> None:
app.addLabel(labelName, text)
app.setLabelFg(labelName, "White")
app.setLabelFont(labelName, size=32)
now = datetime.datetime.now()
date = now.strftime("%A %B %e, %Y")
time = now.strftime("%l:%M %p")
addDateTimeLabel("date", date)
addDateTimeLabel("time", time)
# Weather Data Fetch
def setCurrentWeatherData(weather_data: WeatherInfo) -> None:
weather_string = 'Current: ' + weather_data.status + " " + str(weather_data.temp) + ", High: " + str(weather_data.max_temp) + ", Low: " + str(weather_data.min_temp)
app.queueFunction(app.setLabel, 'current_weather', weather_string)
app.thread(WeatherUtils.getCurrentTemperature, LES_LAT, LES_LON, setCurrentWeatherData)
# Weather UI
addDateTimeLabel('current_weather', 'Loading...')
addDateTimeLabel('forecast', 'Loading...')
app.go()
如果有人对为什么会这样有任何见解，将不胜感激，但我想我会回答这个问题，以防其他人遇到同样的问题。