【IOS控件详解】之MBProgressHUD使用

@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];

    // Regisete 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 usefull in here instead of sleeping ...

    sleep(3);

}

- (void)hudWasHidden {

    // Remove HUD from screen when the HUD was hidded

    [HUD removeFromSuperview];

    [HUD release];

}

@end




原文：http://www.cnblogs.com/GnagWang/archive/2011/09/29/2195710.html