NSDateFormatter string

Question

What is the NSDateFormatter string for the following date/Time : 02/22/2011 10:43:00 AM

Basically what I wanted was to read a string 02/22/2011 19:00:23 PM , convert it to NSDate and then print is appropriately. My previous attempt:

NSDateFormatter* dtFormatter = [[NSDateFormatter alloc] init];
[dtFormatter setDateFormat:@"MM/dd/yyyy HH:mm:ss a"];

NSDate* dt3 = [dtFormatter dateFromString:@"02/22/2011 19:00:23 PM"];
NSString* strDate3 = [dtFormatter stringFromDate:dt3];
NSLog(@"Third = %@",strDate3);

Every time I tried that it would print NULL, it worked when I removed the trailing PM.

Finally, I added the following lines right after the 2nd line in the code above:

[dtFormatter setPMSymbol:@"PM"];
[dtFormatter setAMSymbol:@"AM"];

Answer 1

MM/dd/Y hh:mm:ss a

更多信息请参阅： http ： //unicode.org/reports/tr35/tr35-6.html#Date_Format_Patterns

Answer 2

Try it this will give you the required format..

NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:@"MM/dd/yyyy HH:mm:ss aaa"];

// Conversion of NSString to NSDate
NSDate *dateFromString = [[NSDate alloc] init];
dateFromString = [formatter dateFromString:curDate];   //give what u want to give curDate
[formatter release];

// Conversion of NSDate to NSString
NSString *dateString = [formatter stringFromDate:datePicker.date]; //give date here
[formatter release];

This is the correct way if you want string from NSDate object...Now try it

Good Luck!