Problem solved by using Google Calendar API V3. The idea I found from this post.
The holiday can get from default holiday calendar of google.
The ID list of default holiday calendar can be found here, support to 40 country.
A piece of code that handle permission and get holiday list:-
com.google.api.services.calendar.Calendar client = null;
credential = GoogleAccountCredential.usingOAuth2(mContext, CalendarScopes.CALENDAR);
credential.setSelectedAccountName(mList.get(0));
client = getCalendarService(credential);
do {
com.google.api.services.calendar.model.Events events;
events = client.events().list("en.usa#[email protected]").setPageToken(pageToken).execute();
onHolidayChecked(events.getItems()); //result return here (events.getItems())
pageToken = events.getNextPageToken();
} while (pageToken != null);
private com.google.api.services.calendar.Calendar getCalendarService(GoogleAccountCredential credential) {
return new com.google.api.services.calendar.Calendar.Builder(AndroidHttp.newCompatibleTransport(), new GsonFactory(), credential).build();
}