Question

I am currently writing a simple IOS app that saves tasks into a table. I wanted to expand the app and allow people to share there “lists” with other people. Before saving it to an XML or URL I wanted to try it with a local file using writeToFile:atomically:. This worked great. But I needed the file to be unique to the person using it so I wanted to make the file unique to the title of the the list. Title field is a UITextField. Tasks is a Mutable Array Here is my code:

- (void)saveTask:(id)sender;
{
NSString * original = [titleField text];
NSString * file = [NSString stringWithFormat:@"%@.plist", original];


[tasks writeToFile:@"/tmp/%@.plist",file 
        atomically:YES];
}

I get an error wanting me to add a “:” into the middle of automatically. How can I use a variable in writeToFile:atomically:? If none of this makes sense please let me know so I can add something. Thank you.

Answer 1

With what you’re doing, you’ll end up with file that has .plist.plist extension.

Beside, the reason why you get an error is, the code should be like this

[tasks writeToFile:[NSString stringWithFormat:@"/tmp/%@.plist",file] 
        atomically:YES];

This might be what you wanted

- (void)saveTask:(id)sender;
{
    NSString * original = [titleField text];
    NSString * file = [NSString stringWithFormat:@"%@.plist", original];

    [tasks writeToFile:[NSString stringWithFormat:@"/tmp/%@", file] 
            atomically:YES];
}