NSDate使用

一、将字符串时间转化为NSDate，并打印

1         NSString *string = @"2013-08-12 20:13:43";

2         

3          NSDateFormatter *formatter = [[NSDateFormatter alloc] init];

4         //格式一定要一致，否则无法转换

5         formatter.dateFormat = @"yyyy-MM-dd HH:mm:ss";

6        

7         NSDate *date = [formatter dateFromString: string];

8         NSLog(@"\n%@", date);

 

二、格式化NSDate,转换成字符串并打印

1         NSDate *date = [NSDate date];

2         NSString *time;

3         NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];

4         dateFormatter.dateFormat = @"yyyy-MM-dd HH:mm:ss";

5         time = [dateFormatter stringFromDate:date];

6         NSLog(@"\n%@", date);