Question

Probably really a rookie question here about xcode (for the iphone)..

When I issue this command;

NSString *externalData = [NSData dataWithContentsOfURL:[NSURL URLWithString: @”http://blah.com/userlist.txt“]];

I can see it’s download from my webserver.
How can I make this 1 line show in a label?

I tried;
label.text = externalData;
[externalData release];

But this doesn’t seem to work..it seems to crash the app in the simulator.
Any ideas?

Answer 1

It crashes because +dataWithContentsOfURL: returns an NSData* which is not an NSString*. You want +stringWithContentsOfURL: instead. Note though, that this will block the main thread, which may not be desirable.

Edit:

To be clear, code like this:

NSString* foo = [NSString stringWithContentsOfURL:...];

Where you replace the appropriate sections of code with your own values.