get self object

[iamredeye]

Hello,

Thanks for the XTrace projet, it is awesome !!!

Simply I would like to know how could I get the self object from which the method is intercepted.
Here is an example :
I would like to intercept the before of any UIViewController subclass, so I added this code :
[Xtrace forClass:[self class] before:@selector(viewWillAppear:) callback:@selector(beforeViewWillAppear:sender:)];

When I go to my interception method and I would like to display sender, It says that this object is always (null) :
+(void)beforeViewWillAppear:(BOOL)animated sender:(id)sender {
NSLog(@"%@",sender);
}

How could I pass the sender object to my interceptions methods in my delegate ?

Thanks in advance.

[johnno1962]

Hi, I think you have the animate and sender arguments of your intercept back to front. The first argument is “self” then any arguments. If this doesn’t work, can you send me a small example project?

[iamredeye]

It works great....thank you very much...
Simply I do have another simple question, I liked to add an interceptor before and after method "view Did Load" for all the UIViewControllers subclasses. So I added this code to my app delegate :

[Xtrace forClass:[UIViewController class] before:@selector(viewDidLoad:) callback:@selector(beforeViewDidLoad:)];

Then I go and add in my PlayersViewController this code :
-(void)viewDidLoad {
NSLog(@"begin players view did load");
[super viewDidLoad];
NSLog(@"end players view did load");
}

The problem is when I put an interceptor to the class UIViewController which the mother class for all views I get the message "begin players view did load" in my console log before executing the interception callback method.

How could I fix this issue ?

Thanks again

[johnno1962]

You are intercepting [UIViewController viewDidLoad] not the version in your own class so it is the [super viewDidLoad] which will be intercepted. You should try: [Xtrace forClass:[PlayersViewController class] before:@selector(viewDidLoad:) callback:@selector(beforeViewDidLoad:)];

[iamredeye]

Thanks, It is working...
Is there a solution to try to intercept all UIViewControllers subclasses's viewDidLoad method without putting the name of each view controller (Here : PlayersViewControllers) ?
I'm looking for a automated way, which can intercept at runtime the creation of an object suclasses from UIViewController and then inserting interceptions for it

[johnno1962]

You’d need to do something like:

unsigned ccount;
Class *classes = objc_copyClassList( &ccount );
for ( unsigned i=0 ; i<ccount ; i++ ) {
   if ( class_getSuperclass(classes[i]) == [UIViewController class] )
       [Xtrace forClass: classes[i] before:@selector(viewWillAppear:) callback:@selector(beforeViewWillAppear:sender:)];
}
free( classes );

[iamredeye]

Thanks a lot ! it works