MBProgressHUD is replacement for the undocumented UIProgressHUD UIKit class with some additional features. The class displays s translucent HUD with a progress indicator and some optional labels while work is being done in a background thread. The HUD can show both determinate and indeterminate progress.

More info and download: http://github.com/matej/MBProgressHUD and http://www.bukovinski.com

#import <UIKit/UIKit.h> #import “MBProgressHUD.h”

@interface HudDemoViewController : UIViewController { MBProgressHUD *HUD; }

• (IBAction) showWithLabel:(id)sender;

• (void) myTask;

@end

#import “HudDemoViewController.h”

@implementation HudDemoViewController

• (IBAction) showWithLabel:(id)sender {

  // Should be initialized with the windows frame so the HUD disables all user input by covering the entire screen HUD = [[MBProgressHUD alloc] initWithWindow:[UIApplication sharedApplication].keyWindow];

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

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

  HUD.labelText = @”Loading”;

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

}

• (void) myTask { // Do something useful in here instead of sleeping … sleep(3); }

• (void)hudWasHidden { // Remove HUD from screen when the HUD was hidden [HUD removeFromSuperview]; [HUD release]; }

@end