WCPreferencesManager.mm

-(void)_preferencesChanged {
	CFStringRef appID = CFSTR("com.wangjinli.weekcountpb");
	CFArrayRef keyList = CFPreferencesCopyKeyList(appID, kCFPreferencesCurrentUser, kCFPreferencesAnyHost);
	if (!keyList) {
		[self attemptSettingFallbackPrefs];
		return;
	}
	NSDictionary *preferences = (NSDictionary *)CFBridgingRelease(CFPreferencesCopyMultiple(keyList, appID, kCFPreferencesCurrentUser, kCFPreferencesAnyHost));
	CFRelease(keyList);
	if (!preferences) {
		[self attemptSettingFallbackPrefs];
	}

	_startDateStr = preferences[@"StartDateStr"] ? preferences[@"StartDateStr"] : @"19700101";
	_duration = preferences[@"Duration"] ? [(NSNumber*)preferences[@"Duration"] intValue] : 18;
	_weekStartDay = preferences[@"WeekStartDay"] ? preferences[@"WeekStartDay"] : @"Monday";
	_lockScreenEnabled = preferences[@"LockScreenEnabled"] ? [(NSNumber*)preferences[@"LockScreenEnabled"] boolValue] : YES;
	_nCEnabled = preferences[@"NCEnabled"] ? [(NSNumber*)preferences[@"NCEnabled"] boolValue] : YES;
	_displayFormat = preferences[@"DisplayFormat"] ? preferences[@"DisplayFormat"] : @"Week \%W";

	[self parseDate];
}