Examples with TimeZoneNames android.icu.text.TimeZoneNames used on opensource projects

Example 1 with TimeZoneNames

use of android.icu.text.TimeZoneNames in project android_frameworks_base by ResurrectionRemix.

the class ZoneGetter method getTimeZoneOffsetAndName.

public static String getTimeZoneOffsetAndName(TimeZone tz, Date now) {
    Locale locale = Locale.getDefault();
    String gmtString = getGmtOffsetString(locale, tz, now);
    TimeZoneNames timeZoneNames = TimeZoneNames.getInstance(locale);
    String zoneNameString = getZoneLongName(timeZoneNames, tz, now);
    if (zoneNameString == null) {
        return gmtString;
    }
    // We don't use punctuation here to avoid having to worry about localizing that too!
    return gmtString + " " + zoneNameString;
}

Example 2 with TimeZoneNames

use of android.icu.text.TimeZoneNames in project android_frameworks_base by ResurrectionRemix.

the class ZoneGetter method getZonesList.

public static List<Map<String, Object>> getZonesList(Context context) {
    final Locale locale = Locale.getDefault();
    final Date now = new Date();
    final TimeZoneNames timeZoneNames = TimeZoneNames.getInstance(locale);
    // The display name chosen for each zone entry depends on whether the zone is one associated
    // with the country of the user's chosen locale. For "local" zones we prefer the "long name"
    // (e.g. "Europe/London" -> "British Summer Time" for people in the UK). For "non-local"
    // zones we prefer the exemplar location (e.g. "Europe/London" -> "London" for English
    // speakers from outside the UK). This heuristic is based on the fact that people are
    // typically familiar with their local timezones and exemplar locations don't always match
    // modern-day expectations for people living in the country covered. Large countries like
    // China that mostly use a single timezone (olson id: "Asia/Shanghai") may not live near
    // "Shanghai" and prefer the long name over the exemplar location. The only time we don't
    // follow this policy for local zones is when Android supplies multiple olson IDs to choose
    // from and the use of a zone's long name leads to ambiguity. For example, at the time of
    // writing Android lists 5 olson ids for Australia which collapse to 2 different zone names
    // in winter but 4 different zone names in summer. The ambiguity leads to the users
    // selecting the wrong olson ids.
    // Get the list of olson ids to display to the user.
    List<String> olsonIdsToDisplayList = readTimezonesToDisplay(context);
    // Store the information we are going to need more than once.
    final int zoneCount = olsonIdsToDisplayList.size();
    final String[] olsonIdsToDisplay = new String[zoneCount];
    final TimeZone[] timeZones = new TimeZone[zoneCount];
    final String[] gmtOffsetStrings = new String[zoneCount];
    for (int i = 0; i < zoneCount; i++) {
        String olsonId = olsonIdsToDisplayList.get(i);
        olsonIdsToDisplay[i] = olsonId;
        TimeZone tz = TimeZone.getTimeZone(olsonId);
        timeZones[i] = tz;
        gmtOffsetStrings[i] = getGmtOffsetString(locale, tz, now);
    }
    // Create a lookup of local zone IDs.
    Set<String> localZoneIds = new HashSet<String>();
    for (String olsonId : libcore.icu.TimeZoneNames.forLocale(locale)) {
        localZoneIds.add(olsonId);
    }
    // Work out whether the display names we would show by default would be ambiguous.
    Set<String> localZoneNames = new HashSet<String>();
    boolean useExemplarLocationForLocalNames = false;
    for (int i = 0; i < zoneCount; i++) {
        String olsonId = olsonIdsToDisplay[i];
        if (localZoneIds.contains(olsonId)) {
            TimeZone tz = timeZones[i];
            String displayName = getZoneLongName(timeZoneNames, tz, now);
            if (displayName == null) {
                displayName = gmtOffsetStrings[i];
            }
            boolean nameIsUnique = localZoneNames.add(displayName);
            if (!nameIsUnique) {
                useExemplarLocationForLocalNames = true;
                break;
            }
        }
    }
    // Generate the list of zone entries to return.
    List<Map<String, Object>> zones = new ArrayList<Map<String, Object>>();
    for (int i = 0; i < zoneCount; i++) {
        String olsonId = olsonIdsToDisplay[i];
        TimeZone tz = timeZones[i];
        String gmtOffsetString = gmtOffsetStrings[i];
        boolean isLocalZoneId = localZoneIds.contains(olsonId);
        boolean preferLongName = isLocalZoneId && !useExemplarLocationForLocalNames;
        String displayName;
        if (preferLongName) {
            displayName = getZoneLongName(timeZoneNames, tz, now);
        } else {
            displayName = timeZoneNames.getExemplarLocationName(tz.getID());
            if (displayName == null || displayName.isEmpty()) {
                // getZoneExemplarLocation can return null. Fall back to the long name.
                displayName = getZoneLongName(timeZoneNames, tz, now);
            }
        }
        if (displayName == null || displayName.isEmpty()) {
            displayName = gmtOffsetString;
        }
        int offsetMillis = tz.getOffset(now.getTime());
        Map<String, Object> displayEntry = createDisplayEntry(tz, gmtOffsetString, displayName, offsetMillis);
        zones.add(displayEntry);
    }
    return zones;
}

Example 3 with TimeZoneNames

use of android.icu.text.TimeZoneNames in project platform_frameworks_base by android.

the class ZoneGetter method getTimeZoneOffsetAndName.

public static String getTimeZoneOffsetAndName(TimeZone tz, Date now) {
    Locale locale = Locale.getDefault();
    String gmtString = getGmtOffsetString(locale, tz, now);
    TimeZoneNames timeZoneNames = TimeZoneNames.getInstance(locale);
    String zoneNameString = getZoneLongName(timeZoneNames, tz, now);
    if (zoneNameString == null) {
        return gmtString;
    }
    // We don't use punctuation here to avoid having to worry about localizing that too!
    return gmtString + " " + zoneNameString;
}

Example 4 with TimeZoneNames

use of android.icu.text.TimeZoneNames in project android_frameworks_base by crdroidandroid.

the class ZoneGetter method getZonesList.

public static List<Map<String, Object>> getZonesList(Context context) {
    final Locale locale = Locale.getDefault();
    final Date now = new Date();
    final TimeZoneNames timeZoneNames = TimeZoneNames.getInstance(locale);
    // The display name chosen for each zone entry depends on whether the zone is one associated
    // with the country of the user's chosen locale. For "local" zones we prefer the "long name"
    // (e.g. "Europe/London" -> "British Summer Time" for people in the UK). For "non-local"
    // zones we prefer the exemplar location (e.g. "Europe/London" -> "London" for English
    // speakers from outside the UK). This heuristic is based on the fact that people are
    // typically familiar with their local timezones and exemplar locations don't always match
    // modern-day expectations for people living in the country covered. Large countries like
    // China that mostly use a single timezone (olson id: "Asia/Shanghai") may not live near
    // "Shanghai" and prefer the long name over the exemplar location. The only time we don't
    // follow this policy for local zones is when Android supplies multiple olson IDs to choose
    // from and the use of a zone's long name leads to ambiguity. For example, at the time of
    // writing Android lists 5 olson ids for Australia which collapse to 2 different zone names
    // in winter but 4 different zone names in summer. The ambiguity leads to the users
    // selecting the wrong olson ids.
    // Get the list of olson ids to display to the user.
    List<String> olsonIdsToDisplayList = readTimezonesToDisplay(context);
    // Store the information we are going to need more than once.
    final int zoneCount = olsonIdsToDisplayList.size();
    final String[] olsonIdsToDisplay = new String[zoneCount];
    final TimeZone[] timeZones = new TimeZone[zoneCount];
    final String[] gmtOffsetStrings = new String[zoneCount];
    for (int i = 0; i < zoneCount; i++) {
        String olsonId = olsonIdsToDisplayList.get(i);
        olsonIdsToDisplay[i] = olsonId;
        TimeZone tz = TimeZone.getTimeZone(olsonId);
        timeZones[i] = tz;
        gmtOffsetStrings[i] = getGmtOffsetString(locale, tz, now);
    }
    // Create a lookup of local zone IDs.
    Set<String> localZoneIds = new HashSet<String>();
    for (String olsonId : libcore.icu.TimeZoneNames.forLocale(locale)) {
        localZoneIds.add(olsonId);
    }
    // Work out whether the display names we would show by default would be ambiguous.
    Set<String> localZoneNames = new HashSet<String>();
    boolean useExemplarLocationForLocalNames = false;
    for (int i = 0; i < zoneCount; i++) {
        String olsonId = olsonIdsToDisplay[i];
        if (localZoneIds.contains(olsonId)) {
            TimeZone tz = timeZones[i];
            String displayName = getZoneLongName(timeZoneNames, tz, now);
            if (displayName == null) {
                displayName = gmtOffsetStrings[i];
            }
            boolean nameIsUnique = localZoneNames.add(displayName);
            if (!nameIsUnique) {
                useExemplarLocationForLocalNames = true;
                break;
            }
        }
    }
    // Generate the list of zone entries to return.
    List<Map<String, Object>> zones = new ArrayList<Map<String, Object>>();
    for (int i = 0; i < zoneCount; i++) {
        String olsonId = olsonIdsToDisplay[i];
        TimeZone tz = timeZones[i];
        String gmtOffsetString = gmtOffsetStrings[i];
        boolean isLocalZoneId = localZoneIds.contains(olsonId);
        boolean preferLongName = isLocalZoneId && !useExemplarLocationForLocalNames;
        String displayName;
        if (preferLongName) {
            displayName = getZoneLongName(timeZoneNames, tz, now);
        } else {
            displayName = timeZoneNames.getExemplarLocationName(tz.getID());
            if (displayName == null || displayName.isEmpty()) {
                // getZoneExemplarLocation can return null. Fall back to the long name.
                displayName = getZoneLongName(timeZoneNames, tz, now);
            }
        }
        if (displayName == null || displayName.isEmpty()) {
            displayName = gmtOffsetString;
        }
        int offsetMillis = tz.getOffset(now.getTime());
        Map<String, Object> displayEntry = createDisplayEntry(tz, gmtOffsetString, displayName, offsetMillis);
        zones.add(displayEntry);
    }
    return zones;
}

Example 5 with TimeZoneNames

use of android.icu.text.TimeZoneNames in project android_frameworks_base by crdroidandroid.

the class ZoneGetter method getTimeZoneOffsetAndName.

public static String getTimeZoneOffsetAndName(TimeZone tz, Date now) {
    Locale locale = Locale.getDefault();
    String gmtString = getGmtOffsetString(locale, tz, now);
    TimeZoneNames timeZoneNames = TimeZoneNames.getInstance(locale);
    String zoneNameString = getZoneLongName(timeZoneNames, tz, now);
    if (zoneNameString == null) {
        return gmtString;
    }
    // We don't use punctuation here to avoid having to worry about localizing that too!
    return gmtString + " " + zoneNameString;
}