NSString与NSDate互转

1。NSDate   转换成 字符串
NSDate convert to NSString:

1. NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];

2. [dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];

3. NSString *strDate = [dateFormatter stringFromDate:[NSDate date]];

4. NSLog(@"%@", strDate);

5. [dateFormatter release];

2。 字符串转换成NSSdate：
NSString convert to NSDate:

1. NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];

2. [dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];

3. NSDate *date = [dateFormatter dateFromString:@"2010-08-04 16:01:03"];

4. NSLog(@"%@", date);

5. [dateFormatter release];