UIView, hows it working?

Question

Can someone just clarify how UIView works in this context? Is it just part of the view controller (i.e. the view that is part of my ViewController.xib). I was puzzled for a second as it felt like I should have been declaring it somewhere, I wanted to call beginAnimations but was not sure what to call it on.

@implementation ViewController
@synthesize fadeText_001;

-(IBAction)pressToFade:(id)sender {
    NSLog(@"pressFade ...");
    UIButton *button = (UIButton *)sender;

    [fadeText_001 setAlpha:1.0];
    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:1.5];
    [fadeText_001 setAlpha:0.0];
    [UIView commitAnimations];
}

Cheers gary

Answer 1

beginAnimations:context:, setAnimationDuration: and commitAnimations are class methods, so you call them on the UIView class itself, not a UIView instance.

The class itself is declared through UIKit.h, which is #imported by default.