How can I send parameters to my function?
- (void)alertURL {
NSLog(@"%@",url);
}
- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url {
alertURL(url);
return YES;
}
If there is anything else wrong, please tell me :)
The proper way to define what you call a function, which is a method in Obj-C talk, is to add a colon and the type in parentheses and the parameter variable name.
Then to invoke the method, you use the square brackets.
- (void)alertURL:(NSURL *)url {
NSLog(@"%@",url);
}
- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url {
// Old C function: alertURL(url);
[self alertURL:url];
return YES;
}
Functions are still supported, they're just regular C functions, which mean they're not associated with any object. What you want to be doing is sending a message to the object using the square brackets. It's an Obj-C thing, you'll get used to it.
First, that isn't a function, that is an instance method. Instance methods can take arguments:
- (void)alertURL:(NSURL *)url {
NSLog(@"%@",url);
}
Or, if you wanted to add more than one:
- (void)alertURL:(NSURL *)url ensureSecure: (BOOL) aFlag
{
NSLog(@"%@",url);
if (aFlag) { ... secure stuff ... }
}
Secondly, you don't call a method using function call syntax, you call it via method call syntax:
[self alertURL: anURL];
[self alertURL: anURL ensureSecure: YES];
Finally, the question indicates that you don't yet understand Objective-C. No worries -- we were all there once. Apple provides an excellent introduction to Objective-C.
Just like what you would do in C.
void alertURL(NSURL* url) {
NSLog(@"%@",url);
}
