UIImageView的简单使用

- (void)viewDidLoad {
    [super viewDidLoad];
    //将图片转化为UIImage对象
    //png格式不需要加扩展名，其它格式图片需要
    UIImage* image1 = [UIImage imageNamed:@"a"];
    UIImage* image2 = [UIImage imageNamed:@"b"];
    
    UIImageView* imageV = [[UIImageView alloc] initWithFrame:CGRectMake(100, 100, 100, 70)];
    [self.view addSubview:imageV];
    //设置背景颜色
    imageV.backgroundColor = [UIColor orangeColor];
    //设置显示的图片
    imageV.image = image1;
    //改变图片填充方式
    //UIViewContentModeScaleAspectFit，等比例缩放，图片不变形
    //UIViewContentModeScaleAspectFill,等比例填充，填满
    imageV.contentMode = UIViewContentModeScaleAspectFit;
    //切除超出部分
//    imageV.clipsToBounds = YES;
    
    //设置高亮图片
    imageV.highlightedImage = image2;
    imageV.highlighted = YES;
    
    
    //动画数组
    UIImageView* animateImageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 320, 190)];
    [self.view addSubview:animateImageView];
    //创建动画数组
    NSMutableArray* animateImages = [[NSMutableArray alloc] init];
    
    for (int i = 1; i < 22; i++) {
        //记得加扩展名（.jpg）
        NSString* imageName = [NSString stringWithFormat:@"%d.jpg",i];
        UIImage* image = [UIImage imageNamed:imageName];
        [animateImages addObject:image];
    }
    //设置需要播放的动画（图片数组）
    animateImageView.animationImages = animateImages;
    //设置动画时间
    animateImageView.animationDuration = 2;
    //设置重复次数(0是一直重复)
    animateImageView.animationRepeatCount = 0;
    
    //开始动画
    [animateImageView startAnimating];
    
    
}