ローカル時刻を取得するようにNSDateを拡張

NSDate+Util.h

@interface NSDate (Util)
 
- (NSDate*)toLocalTime;
 
@end
  

NSDate+Util.m

#import "NSDate+Util.h"
 
@implementation NSDate (Util)
 
- (NSDate*)toLocalTime{
    
    NSTimeZone *tz = [NSTimeZone defaultTimeZone];
    NSInteger seconds = [tz secondsFromGMTForDate: self];
    return [NSDate dateWithTimeInterval: seconds sinceDate: self];
 
}
 
@end