Custom activityIndicator using objective C

-(void)StartProgressBar:(NSString *)strMessgae superView:(UIView *)view

{

    

    UIView *alertView=[[UIView alloc] initWithFrame:CGRectMake((view.frame.size.width/2)-50, (view.frame.size.height/2)-80, 100, 70)];

    alertView.tag=505;

    [alertView setBackgroundColor:[UIColor blackColor]];

    [alertView setAlpha:.7];

    alertView.layer.cornerRadius=8.0f;

    

    UIActivityIndicatorView *activityIndicator = [[UIActivityIndicatorView alloc]initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];

    //[activityIndicator setFrame:CGRectMake((alertView.frame.size.width/2)-25, 10, 55, 30)]; // Commented on 28thJan2014

    [activityIndicator setFrame:CGRectMake((alertView.frame.size.width/2)-25, 20, 55, 30)];

    [activityIndicator startAnimating];

    [alertView addSubview:activityIndicator];

    

    // Commented on 28thJan2014 START --

//    UILabel *lbl=[[UILabel alloc] initWithFrame:CGRectMake(0, 40, alertView.frame.size.width, 30)];

//    lbl.text=strMessgae;

//    [lbl setBackgroundColor:[UIColor clearColor]];

//    [lbl setTextColor:[UIColor whiteColor]];

//    [lbl setFont:[UIFont fontWithName:@"Helvetica-Bold" size:11]];

//    [lbl setTextAlignment:NSTextAlignmentCenter];

//    [alertView addSubview:lbl];

    // -- END

    

    view.userInteractionEnabled = NO;

    self.navigationController.view.userInteractionEnabled = NO;

    [view addSubview:alertView];

    

    

}

-(void)StopProgressBar:(UIView *)view

{

    //[alertProgressBar dismissWithClickedButtonIndex:0 animated:YES];

    UIView *subView=(UIView *)[view viewWithTag:505];

    

    if (subView)

        [subView removeFromSuperview];

    

    view.userInteractionEnabled = YES;

    self.navigationController.view.userInteractionEnabled = YES;

}