I have a ViewController with a NavigationController and I want to add a translucent UIView with some Buttons over the ViewController when I press a ViewController button, the problem is that I can not put the UIView over the NavigationBar. How can I solve this?

This is my code ( Very simple)

-(void)setOpacityView
{
    opacityVw = [[UIView alloc] initWithFrame:self.view.bounds];
    opacityVw.backgroundColor = [[UIColor alloc] initWithRed:0.0 green:0.0 blue:0.0 alpha:0.8];


    WPCustomButton *closeBtn = [[WPCustomButton alloc] initWithFrame:CGRectMake(230, 10, 80, 20)];
    [closeBtn setTitle:@"Close X" forState:UIControlStateNormal];
    [closeBtn setBackgroundColor:[UIColor clearColor]];
    [closeBtn setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
    [closeBtn addTarget:self action:@selector(closeView) forControlEvents:UIControlEventTouchUpInside];
    [opacityVw addSubview:closeBtn];
}

// ---------------------------------------------------------------------------------------------------------------------

#pragma mark - Button methods

-(void) closeView
{
    [opacityVw removeFromSuperview];
}


-(void)setProfileImage
{
    [self setOpacityView];

    [self.view addSubview:opacityVw];
}