Question

i want to click a button to change Views in iphone app . I use this code and it work , but there is 2 warning .

-(IBAction) showSearchFlye:(id)send;
{
    NSLog(@"Shoing Search flye");
    SearchFlye *search= [[SearchFlye alloc] initWithNibName:@"SearchFlye" bundle:nil];
    [self.navigationController pushViewController:search animated:NO];

}

this is the warning message http://hpics.li/fef7ba9 .

and this is the interface of the class SearchFlye

@interface SearchFlye : UIViewController  {

}

@end

The application work fine but i dont understand wy i have this warning ? And if it’s correct to do this for changing view ?

thanx

Answer 1

Your warnings should come from not having imported the header file where SearchFlye is declared in the .m file where showSearchFlye is defined.

The reason why it works is this: compiler does not have information about your class, hence the warnings, but your class is linked in and it contains all the selectors that are needed by the objective-c runtime (which does a dynamic dispatch).

If this is the correct way of changing view, depends on your application UI architecture. If you don’t need a navigation controller or a tab bar, it seems fine to me clicking on a button to move to another view…