NSString VS NSDate (转换详解)

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将字符串转换成NSDate格式:

(一) NSString * string = @"20140111152832";

NSDateFormatter * formatter = [[NSDateFormatter alloc]init];
[formatter setDateFormat:@"yyyyMMddHHmmss"];
NSDate * date = [formatter dateFromString:string];
[formatter setDateFormat:@"yyyy-MM-dd:HH-mm-ss"];

NSString * result = [formatter stringFromDate:date];

(二) NSDateFormatter *dateFormatter1 = [[NSDateFormatter alloc] init];

[dateFormatter1 setDateFormat:@"yyyy-MM-dd HH:mm:ss"];

NSDate *date1 = [dateFormatter1 dateFromString:@"2010-08-04 16:01:03"];

NSLog(@"1111111111111111%@", date1);

[dateFormatter1 release];

将NSData转换成NSString格式

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

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

NSString *strDate = [dateFormatterstringFromDate:[NSDate date]];

NSLog(@"8888888888888%@", strDate);

[dateFormatter release];

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