Override Custom UITableView Class Method - ios

Question

I am using MWPhotoBrowser to display some photos in an app and I would like for example to change the title of the navigation controller. With a value I have in my current view controller. From the current view controller I modally call MWPhotoBrowser like this
MWPhotoBrowser *browser = [[MWPhotoBrowser alloc] initWithDelegate:self];
//Tried this below didn't work
browser.title = #"MY NEW TITLE";
UINavigationController *nc = [[UINavigationController alloc] initWithRootViewController:browser];
nc.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
[self presentViewController:nc animated:YES completion:nil];
So I went into the actually files of this class and in MWPhotoBrowser.m there is a function like this
- (void)updateNavigation {
NSUInteger numberOfPhotos = [self numberOfPhotos];
self.title = [NSString stringWithFormat:#"%lu Photots", photosText];
}
And I could just change it manually (hard code a value) there but I want the value to change depending on my original view controller, so I want to pass it a value to be able to set it on my original view controller. So I tried something like this, below updateNavigation I put
-(void)updateTitle:(NSString*)title {
self.title = title;
}
And then in my original view controller I tried
MWPhotoBrowser *browser = [[MWPhotoBrowser alloc] initWithDelegate:self];
[browser updateTitle:#"TEST TITLE"];
But this didn't work either, so how can I set the title of the MWPhotoBrowser form my current view controller, without hard coding a value?
Thanks

Answer 1

updateNavigation can be called anywhere after you called your updateTitle: method, so thats why it didn't work. Also, changing/adding something to external libraries is a bad idea, because when you udpate them you have to remember to apply all your changes again.
Now the easiest way to achieve what you want would be to create a simple subclass of MWPhotoBrowser, something like this :
CustomTitlePhotoBrowser.h
#import <MWPhotoBrowser/MWPhotoBrowser.h> //I'm not sure if this is a correct import, change accordingly
#interface CustomTitlePhotoBrowser : MWPhotoBrowser
-(void)updateTitle:(NSString *)title;
#end
CustomTitlePhotoBrowser.m
#import "CustomBrowser.h"
#interface CustomTitlePhotoBrowser()
#property(nonatomic, copy) NSString *customTitle;
#end
#implementation CustomTitlePhotoBrowser
-(void)updateTitle:(NSString *)title {
self.customTitle = title;
[self updateNavigation];
}
-(void)updateNavigation {
self.title = self.customTitle;
}
#end
And to use it :
CustomTitlePhotoBrowser *browser = [[CustomTitlePhotoBrowser alloc] initWithDelegate:self];
[browser updateTitle:#"TEST TITLE"];
There are two things added in the subclass :
We add a stored property customTitle, so that whenever updateNavigation is called, we still remember what we want to show. I also decided to call [self updateNavigation] here - this may not be needed, but gives you a possibility to change the title while the browser is shown.
We override updateNavigation - this is the clue of all of this. When using CustomTitlePhotoBrowser, whenever the original code calls updateNavigation, our overriden implementation will be called instead.