自由手記

-(void) action: (UIBarButtonItem *) item

{

loadingview = [[UIAlertView alloc] initWithTitle:nil 

   message: @"请稍候... ..."

   delegate: self

  cancelButtonTitle: nil

  otherButtonTitles: nil];

//创建等待图标

UIActivityIndicatorView *activityView = [[UIActivityIndicatorView alloc]initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite];

activityView.frame = CGRectMake(120.f, 48.0f, 37.0f, 37.0f);

[loadingview addSubview:activityView];

[activityView startAnimating];

[activityView release];

[loadingview show];

[NSThread detachNewThreadSelector:@selector(CloseLoading)toTarget:self withObject:nil];

}

-(void) CloseLoading

{

//等待3秒

[NSThread sleepForTimeInterval:3];

//删除等待视图

[loadingview dismissWithClickedButtonIndex:0 animated:YES];

}