Question

In the interface for my AppDelegate I have the following property declaration:

@property (strong) NSArray *fileNamesInCurrentDirectory;

and then, in the implementation:

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
    [self setFileNamesInCurrentDirectory:[NSArray arrayWithObject:@"hello"]];

}

- (NSInteger)numberOfRowsInTableView:(NSTableView *)tableView {
    return [self.fileNamesInCurrentDirectory count];
}

When numberOfRowsInTableView is called, fileNamesInCurrentDirectory is nil. Why?

Thanks in advance.

Answer 1

Because as mentioned in the documentation

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification    

Sent by the default notification center after the application has been launched and initialized

Which means, I guess, that the application loads entirely, build all views and then call the method.

Is there any reason why you need your method call to occur after the application is loaded ?