- (IBAction) leyenda: (id)sender
{
    fondo = [[UIControl alloc] initWithFrame: CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
    [fondo setBackgroundColor: [UIColor blackColor]];
    [fondo setAlpha: 0.5];
    [fondo addTarget: self action: @selector(cerrarLeyenda:) forControlEvents: UIControlEventTouchUpInside];
    [self.view addSubview: fondo];
    [self.view bringSubviewToFront: fondo];
    leyend = [[UIView alloc] initWithFrame: CGRectMake(60, 70, 200, 300)];
    [leyend setBackgroundColor: [UIColor whiteColor]];
    int yPosition2 = 0;
    UILabel *cabecera = [[UILabel alloc] initWithFrame: CGRectMake(0, yPosition2, leyend.frame.size.width, 30)];
    [cabecera setBackgroundColor: [UIColor colorWithRed: 255.0/255.0 green: 204.0/255.0 blue: 0.0/255.0 alpha: 1]];
    [cabecera setText: @"Leyenda"];
    [cabecera setTextAlignment: UITextAlignmentCenter];
    [leyend addSubview: cabecera];
    yPosition2 += cabecera.frame.size.height + 10;
    UIImageView *iconoEvento = [[UIImageView alloc] initWithFrame: CGRectMake(10, yPosition2, 40, 40)];
    [iconoEvento setImage: [UIImage imageNamed: @"evento_icono_verde.png"]];
    [leyend addSubview: iconoEvento];
    UILabel *iconoEventoTxt = [[UILabel alloc] initWithFrame: CGRectMake(50, yPosition2, leyend.frame.size.width - 100, 0)];
    [iconoEventoTxt setText: @"Botón de acceso al evento"];
    [iconoEventoTxt setBackgroundColor: [UIColor clearColor]];
    [leyend addSubview: iconoEventoTxt];
    yPosition2 += iconoEvento.frame.size.height + 5;
    UILabel *eventoDesc = [[UILabel alloc] initWithFrame: CGRectMake(10, yPosition2, leyend.frame.size.width - 20, 0)];
    [eventoDesc setText: @"Permite visualizar la información del evento y configurar sus rutas."];
    [eventoDesc setBackgroundColor: [UIColor clearColor]];
    [eventoDesc setNumberOfLines: 0];
    [eventoDesc sizeToFit];
    [leyend addSubview: eventoDesc];
    // Animación para la aparición de la leyenda
    [UIView beginAnimations: @"flipping view" context: nil];
    [UIView setAnimationDuration: 0.5];
    [UIView setAnimationCurve: UIViewAnimationCurveEaseInOut];
    [self.view addSubview: leyend];
    [UIView setAnimationTransition: UIViewAnimationTransitionFlipFromLeft forView: leyend cache: YES];
    [UIView commitAnimations];
    [self.view bringSubviewToFront: leyend];
}