Use SCGIFImageView as a UIImageView to show a gif image with animation.
NSString* filePath = [[NSBundle mainBundle] pathForResource:@"1.gif" ofType:nil];
NSData* imageData = [NSData dataWithContentsOfFile:filePath];
SCGIFImageView* gifImageView = [[[SCGIFImageView alloc] initWithFrame:self.view.bounds] autorelease];
[gifImageView setData:imageData];
[self.view addSubview:gifImageView];