work with two container view using segmented controller

Question

M learn Container View using objective c.

Here, try to display two container one by one using segmented Controller. Two container use container name is containerViewA, containerViewB. I am running the app that time only containerViewB is load.

Code:

@interface ViewController ()
@property (weak, nonatomic) IBOutlet UIView *containerViewA;
@property (weak, nonatomic) IBOutlet UIView *containerViewB;
@end

- (IBAction)ShowComponent:(UISegmentedControl *)sender {
    if (sender.selectedSegmentIndex == 0) {
        [UIView animateWithDuration:(0.5) animations:^{
            self.containerViewA.alpha = 1;
            self.containerViewB.alpha = 0;
        }];
    } else {
        [UIView animateWithDuration:(0.5) animations:^{
            self.containerViewA.alpha = 0;
            self.containerViewB.alpha = 1;
        }];
    }
} 

Update:

Update 1:

Storyboard side panel.

Answer 1

make sure @property (weak, nonatomic) IBOutlet UIView *containerViewA; and @property (weak, nonatomic) IBOutlet UIView *containerViewB; are connected properly.