Add click function for UIImageView

  UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapDetected)];
  singleTap.numberOfTapsRequired = 1;
  [_settingImg setUserInteractionEnabled:YES];
  [_settingImg addGestureRecognizer:singleTap];

-(void)tapDetected{
    NSLog(@"single Tap on imageview");
    
    [self performSegueWithIdentifier:@"rankSegue" sender:self];
}