com.mayokunadeniyi.instantweather, PID: 2897java.lang.NullPointerException at com.mayokunadeniyi.instantweather.data.source.local

[OmarLkhalil]

class WeatherLocalDataSourceImpl
is thrown a null pointer exception

so returning an empty DBWeather if it's null fixing the issue

override suspend fun getWeather(): DBWeather? = withContext(ioDispatcher) {
if (weatherDao.getWeather() == null) {
return@withContext DBWeather(
cityId = 0,
cityName = "None",
wind = Wind(
speed = 0.0,
deg = 0
),
networkWeatherDescription = listOf(),
networkWeatherCondition = NetworkWeatherCondition(
temp = 0.0,
pressure = 0.0,
humidity = 0.0
)
)
} else {
return@withContext weatherDao.getWeather()
}
}

[OmarLkhalil]

and you may need to update observeviewmodel function in home fragment also to handle if networkWeatherDescription is empty

weather.observe(viewLifecycleOwner) { weather ->
weather?.let {
prefs.saveCityId(it.cityId)

                if (prefs.getSelectedTemperatureUnit() == activity?.resources?.getString(R.string.temp_unit_fahrenheit))
                    it.networkWeatherCondition.temp =
                        convertCelsiusToFahrenheit(it.networkWeatherCondition.temp)

                binding.weather = it
                if (it.networkWeatherDescription.isNotEmpty()) {
                    binding.networkWeatherDescription = it.networkWeatherDescription.first()
                } else {
                    binding.networkWeatherDescription = null
                }
            }
        }