UIImageView多張圖片切換

- (void)viewDidLoad  
{  
    //定義數組，存放所有圖片對象   
    NSArray *images=[NSArray arrayWithObjects:[UIImage imageNamed:@"xuanyi.jpg"],[UIImage imageNamed:@"xigua.jpg"],[UIImage imageNamed:@"juhua.jpg"],[UIImage imageNamed:@"heihua.jpg"],[UIImage imageNamed:@"cell.jpg"], nil];  
    //定義結構體，方塊大小  
    CGRect frame=CGRectMake(0, 0, 320, 460);  
    //初始化圖像視圖對象，大小是frame  
    UIImageView *imageView = [[UIImageView alloc] initWithFrame:frame];  
    //imageView的動畫圖片是數組images  
    imageView.animationImages = images;  
    //按照原始比例縮放圖片，保持縱橫比  
    imageView.contentMode = UIViewContentModeScaleAspectFit;   
    //切換動作的時間3秒，來控制圖像顯示的速度有多快，  
    imageView.animationDuration = 3;   
    //動畫的重復次數，想讓它無限循環就賦成0  
    imageView.animationRepeatCount = 0;   
    //開始動畫  
    [imageView startAnimating];  
    //添加控件  
    [self.view addSubview:imageView];  
  
    //釋放內存  
    [imageView release];  
      
    [super viewDidLoad];  
    // Do any additional setup after loading the view, typically from a nib.  
}