Twitterのcreated_atを素敵なNSStringにした ref: http://qiita.com/neiraza/items/ea78899d617e523b5e2d

file0.txt

Mon Feb 17 11:36:30 +0000 2014

やってやった

- (NSString *)createdAtToString:(NSString *)dateStr
{
    NSDateFormatter *inputFormat = [[NSDateFormatter alloc] init];
    [inputFormat setLocale:[[NSLocale alloc] initWithLocaleIdentifier:@"en_US"]];
    [inputFormat setDateFormat:@"eee MMM dd HH:mm:ss ZZZZ yyyy"];
    NSDate *date = [inputFormat dateFromString:dateStr];

    NSDateFormatter *outputFormat = [[NSDateFormatter alloc] init];
    [outputFormat setLocale:[[NSLocale alloc] initWithLocaleIdentifier:@"ja_JP"]];
    [outputFormat setDateFormat:@"yyyy/MM/dd HH:mm:ss"];
    return [outputFormat stringFromDate:date];
}