Question

I have this code:

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    // Navigation logic
    NSLog(@"didSelectRowAtIndexPath");

    //The hud will dispable all input on the view
    HUD = [[MBProgressHUD alloc] initWithView:self.view];

    // Add HUD to screen
    [self.view addSubview:HUD];

    // Regisete for HUD callbacks so we can remove it from the window at the right time
    HUD.delegate = self;

    HUD.labelText = @"Loading Events, Please Wait..";

    int i = indexPath.row;

    //Show the HUD while the provided method executes in a new thread
    [HUD showWhileExecuting:@selector(loadData:) onTarget:self withObject:i animated:YES];   
} 

And I get this warning:

warning: passing argument 3 of ‘showWhileExecuting:onTarget:withObject:animated:’ makes pointer from integer without a cast

Can somebody please explain what I’m doing wrong here? Could someone also briefly explain the situation with ints in Objective-C, coming from Java I find it odd that they are so confusing to use.

Answer 1

The problem is that showWhileExecuting:onTarget:withObject:animated: takes an object as its third argument. To get aroung this, you can wrap integers as objects using the NSNumber class

[NSNumber numberWithInt:i]

You will then have to unwrap the argument in the loadData: method by calling

[argument intValue]