将String转换为NSDate总是为零

Question

I want to covert from a NSString to NSDate object. My string is : @"01/01/2013 .

Here is the code to convert the string to NSDate:

- (NSDate*) formatDateTimeFromString: (NSString* ) string{
    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
    [dateFormatter setDateFormat:@"dd-MM-yyyy"];
    NSDate* date=  [dateFormatter dateFromString:string    ];
    return date;
}

I debug into the function and see that the date object is always nil. Did I have any mistake?

Answer 1

Your date formatter is wrong (might be hard to see at first)

Change

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

to

[dateFormatter setDateFormat:@"dd/MM/yyyy"];