按下iPhone时如何切换到下一个视图？

Question

here is a iPhone programming beginner's question: How do I get to another view by pressing a button in my main view?

I have the following function which is executed when I press a button, and debugging it, he passes there, but my "Warning" view does not show up:

-(IBAction) showWarningView:(id)sender

{

    if(self.showWarning == nil){
        WarningViewController *nextView = [[WarningViewController alloc] initWithNibName:@"Warning" bundle:[NSBundle mainBundle]];
        self.showWarning = nextView;
        [nextView release];
    }
    [self.navigationController pushViewController:self.showWarning animated:YES];

}

My main RootViewController looks like this:

#import <UIKit/UIKit.h>
#import "WarningViewController.h"

@interface RootViewController : UIViewController {
    IBOutlet UIButton *button1;
    WarningViewController *showWarning;

}
@property(nonatomic,retain) WarningViewController *showWarning;

-(IBAction) showWarningView:(id)sender;

@end

I am using the navigation control of a UITableViewController but what do I have to use to just simply show my other view when I press a button in a view-based application? Thanks a lot!

Answer 1

edited

if you're using the navigation control of a UITableViewController, you probably have to push the view in you tableviewcontrollers navigation controller this means you have pass the navigation controller of your tableviewcontroller on to your viewcontroller, then you just push it

eg

[self.tableViewControllersNavigationController pushViewController:self.showWarning animated:YES];

(for passing the tableViewController's navigationController on, you might have to create a delegate pattern)

Answer 2

Does the title in your navigation bar change? Maybe you don't have a UIView associated with your UIViewController inside your Interface Builder file.