path: root/src/corelib/tools/qelapsedtimer.cpp
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authorDrew Parsons <>2014-06-23 15:37:05 +1000
committerDrew Parsons <>2014-11-26 01:43:10 +0100
commit9a565f8fe47f09b3275d7cb425b62117e26be4e9 (patch)
treec1ad95f0074e085accc4aa59cd9e4ce7375e3a23 /src/corelib/tools/qelapsedtimer.cpp
parent1611adc17eda0f4a85aea8d9cb4c5d01be0eda41 (diff)
provide Android timezones in QTimeZone
QTimeZone on a unix-based system expects IANA (Olson) timezones to be provided in /usr/share/zoneinfo or /usr/lib/zoneinfo. But on an Android system the timezone datafiles at this location are incomplete (Android instead uses the java class java.util.TimeZone). QTimeZone on Android therefore would only return the default UTC timezones, not the full set of IANA timezones. This patch invokes JNI on an Android system to make the full set of java timezones known to QTimeZone. The implementation adds a new QAndroidTimeZonePrivate class, invoked by the private implementation of QTimeZone in place of QTzTimeZonePrivate. QAndroidTimeZonePrivate contains adds a new QJNIObjectPrivate [java.util.TimeZone] androidTimeZone property which is used to access the java timezone API. Android limitations: 1) the java class java.util.TimeZone does not provide transitions (see 2) abbreviation( ) is provided using Java TimeZone::getDisplayName( ) with the java SHORT style. This sometimes generates a GMT reference instead of a three-letter code, e.g. America/Sao_Paulo returns "GMT-03:00" instead of "BRT" 3) hasDaylightTime() is handled using Java TimeZone::useDaylightTime(), which according to java (Android) documentation only tests for future transitions, not past transitions. This might conflict with the Qt documentation for this function (which is intended to test also for past transitions). [ChangeLog][Platform Specific Changes][Android][QtCore][QTimeZone] Android timezones are now available in QTimeZone. Change-Id: I165a39b7d4cb30b68f2da8556d85fc5b4480da4b Task-number: QTBUG-35908 Reviewed-by: Thiago Macieira <>
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