private void normalizeDate(ContentValues values) {
// normalize the date value
if (values.containsKey(WeatherEntry.COLUMN_DATE)) {
long dateValue = values.getAsLong(WeatherEntry.COLUMN_DATE);
values.put(WeatherEntry.COLUMN_DATE, WeatherContract.normalizeDate(dateValue));
}
}
private void getWeatherDataFromJson(String forecastJsonStr, int numDays, String locationSetting)
throws JSONException {
// Location information
final String OWM_CITY = "city";
final String OWM_CITY_NAME = "name";
final String OWM_COORD = "coord";
final String OWM_COORD_LAT = "lat";
final String OWM_COORD_LONG = "lon";
// These are the names of the JSON objects that need to be extracted.
final String OWM_LIST = "list";
final String OWM_DATETIME = "dt";
final String OWM_PRESSURE = "pressure";
final String OWM_HUMIDITY = "humidity";
final String OWM_WINDSPEED = "speed";
final String OWM_WIND_DIRECTION = "deg";
// All temperatures are children of the "temp" object.
final String OWM_TEMPERATURE = "temp";
final String OWM_MAX = "max";
final String OWM_MIN = "min";
final String OWM_WEATHER = "weather";
final String OWM_DESCRIPTION = "main";
final String OWM_WEATHER_ID = "id";
JSONObject forecastJson = new JSONObject(forecastJsonStr);
JSONArray weatherArray = forecastJson.getJSONArray(OWM_LIST);
JSONObject cityJson = forecastJson.getJSONObject(OWM_CITY);
String cityName = cityJson.getString(OWM_CITY_NAME);
JSONObject coordJSON = cityJson.getJSONObject(OWM_COORD);
double cityLatitude = coordJSON.getLong(OWM_COORD_LAT);
double cityLongitude = coordJSON.getLong(OWM_COORD_LONG);
// OWM returns daily forecasts based upon the local time of the city that is being
// asked for, which means that we need to know the GMT offset to translate this data
// properly.
// Since this data is also sent in-order and the first day is always the
// current day, we're going to take advantage of that to get a nice
// normalized UTC date for all of our weather.
long locationID =
insertLocationInDatabase(locationSetting, cityName, cityLatitude, cityLongitude);
Vector<ContentValues> cVVector = new Vector<ContentValues>(weatherArray.length());
// Time dayTime = new Time();
// dayTime.setToNow();
// we start at the day returned by local time. Otherwise this is a mess.
// int julianStartDay = Time.getJulianDay(System.currentTimeMillis(), dayTime.gmtoff);
// now we work exclusively in UTC
// dayTime = new Time();
String[] resultStrs = new String[numDays];
for (int i = 0; i < weatherArray.length(); i++) {
// For now, using the format "Day, description, hi/low"
String day;
String description;
String highAndLow;
double pressure;
int humidity;
double windSpeed;
double windDirection;
int weatherId;
// Get the JSON object representing the day
JSONObject dayForecast = weatherArray.getJSONObject(i);
// The date/time is returned as a long. We need to convert that
// into something human-readable, since most people won't read "1400356800" as
// "this saturday".
long dateTime;
// Cheating to convert this to UTC time, which is what we want anyhow
dateTime = dayForecast.getLong(OWM_DATETIME);
pressure = dayForecast.getDouble(OWM_PRESSURE);
humidity = dayForecast.getInt(OWM_HUMIDITY);
windSpeed = dayForecast.getDouble(OWM_WINDSPEED);
windDirection = dayForecast.getDouble(OWM_WIND_DIRECTION);
// day = getReadableDateString(dateTime);
// description is in a child array called "weather", which is 1 element long.
JSONObject weatherObject = dayForecast.getJSONArray(OWM_WEATHER).getJSONObject(0);
description = weatherObject.getString(OWM_DESCRIPTION);
weatherId = weatherObject.getInt(OWM_WEATHER_ID);
// Temperatures are in a child object called "temp". Try not to name variables
// "temp" when working with temperature. It confuses everybody.
JSONObject temperatureObject = dayForecast.getJSONObject(OWM_TEMPERATURE);
double high = temperatureObject.getDouble(OWM_MAX);
double low = temperatureObject.getDouble(OWM_MIN);
ContentValues weatherValues = new ContentValues();
weatherValues.put(WeatherContract.WeatherEntry.COLUMN_LOC_KEY, locationID);
weatherValues.put(
WeatherContract.WeatherEntry.COLUMN_DATE,
WeatherContract.getDbDateString(new Date(dateTime * 1000L)));
weatherValues.put(WeatherContract.WeatherEntry.COLUMN_HUMIDITY, humidity);
weatherValues.put(WeatherContract.WeatherEntry.COLUMN_PRESSURE, pressure);
weatherValues.put(WeatherContract.WeatherEntry.COLUMN_WIND_SPEED, windSpeed);
weatherValues.put(WeatherContract.WeatherEntry.COLUMN_DEGREE, windDirection);
weatherValues.put(WeatherContract.WeatherEntry.COLUMN_MAX_TEMP, high);
weatherValues.put(WeatherContract.WeatherEntry.COLUMN_MIN_TEMP, low);
weatherValues.put(WeatherContract.WeatherEntry.COLUMN_SHORT_DESC, description);
weatherValues.put(WeatherContract.WeatherEntry.COLUMN_WEATHER_ID, weatherId);
cVVector.add(weatherValues);
}
if (cVVector.size() > 0) {
ContentValues[] cvArray = new ContentValues[cVVector.size()];
cVVector.toArray(cvArray);
mContext.getContentResolver().bulkInsert(WeatherContract.WeatherEntry.CONTENT_URI, cvArray);
}
}
