Add UIView Slider Down

lbView.backgroundColor = [UIColor blackColor];

    lbView.frame = CGRectMake(0, 0, 320, 480);

    lbView.alpha = 0.7;

    UIButton *removeLbView = [UIButton buttonWithType:UIButtonTypeCustom];

    removeLbView.frame = CGRectMake(0, 0, 320, 480);

    [removeLbView addTarget:self action:@selector(removeShareLocationTapped) forControlEvents:UIControlEventTouchUpInside];

    [lbView addSubview:removeLbView];

    [self.view addSubview:lbView];

    self.myLocationView.frame = CGRectMake(0, -400, 320, 480);

    [self.view addSubview:self.myLocationView];

    

    [UIView beginAnimations:nil context:nil];

    [UIView setAnimationDuration:0.5];

    self.myLocationView.frame = CGRectMake(0, 0, 320, 400);

    [UIView commitAnimations];

- (void)removeShareLocationTapped {

    [lbView removeFromSuperview];

    

    [UIView beginAnimations:nil context:nil];

    [UIView setAnimationDuration:0.5];

    self.myLocationView.frame = CGRectMake(0, -400, 320, 400);

    [UIView commitAnimations];

    

}