title: Using isKindOfClass: I don't understand why this code is behaving this way
body: <pre><code>-(void)viewWillAppear:(BOOL)animated
  {
     [super viewWillAppear:animated];
     UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(100, 100, 100, 100)];
     imageView.image = [UIImage imageNamed:@"Sample.png"];
     [self.view addSubview:imageView];
     NSArray *subviews = [self.view subviews];
     for(id element in subviews) {
        if ([[element class] isKindOfClass:[UIImageView class]]) //check if the object is a UIImageView
        {
           NSLog(@"element is a UIImageView\n");
           [element setCenter:CGPointMake(500., 500.)];
        } else {
           NSLog(@"element is NOT a UIImageView\n");
        }
     }
  }
  </code></pre>
  
  <p>I expected the output to be "element is a UIImageView, but it's actually element is NOT a UIImageView. Why? It's not that there are other subviews. There is only one. Furthermore, when run, the image is displayed at 100,100, not 500,500 as expected.</p>