字符串转换成NSDate类型的 为nil解决方法

方法一    通过下列函数来解决   但是得到的日期会改变 修改方法fix

 

- (NSDate *)timeForString:(NSString *)string {

   
    NSMutableString *timeString = [[NSMutableString alloc] initWithString:string];
   
    [timeString setString:[timeString stringByReplacingOccurrencesOfString:@"/Date(" withString:@""]];
   
    [timeString setString:[timeString stringByReplacingOccurrencesOfString:@")/" withString:@""]];
   
    [timeString setString:[timeString substringToIndex:timeString.length - 3]];
   
    return [NSDate dateWithTimeIntervalSince1970:[timeString longLongValue]];
   

}

 

 

方法二  已解决

    NSString *time = [_userDic objectForKey:USERAGE];
                        NSDateFormatter *formatter1 = [[NSDateFormatter alloc] init];
                        [formatter1 setDateFormat:@"yyyyMMdd"];
                       
                        [formatter1 setTimeZone:[NSTimeZone timeZoneWithName:@"GTM"]];//GTM,格林尼治时区
                        NSDate *date = [formatter1 dateFromString:time];
                       
                        NSTimeInterval dateDiff = [date timeIntervalSinceNow];
                        int age= fabs(trunc(dateDiff / (60 * 60 * 24)) / 365);

                        cell.value.text = [NSString stringWithFormat:@"%d", age];