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];