How do I convert from NSString to NSDate?

Question

how to convert from NSString to NSDate ?

it must be in yyyy-MM-dd HH:mm:ss this format when it converts from NSString to NSDate format

Answer 1

Use NSDateFormatter's dateFromString:

NSString *dateStr = @"20100212";

// Convert string to date object
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:@"yyyyMMdd"];
NSDate *date = [dateFormat dateFromString:dateStr];  

// Convert date object to desired output format
[dateFormat setDateFormat:@"YYYY-MM-dd HH:mm:ss"];
dateStr = [dateFormat stringFromDate:date];  
[dateFormat release];