1.contentMode

view.contentMode = UIViewContentModeScaleAspectFill;

2.是否实现触摸

    

3.简单实现动画 图片的名字为campFire01-campFire17

    NSMutableArray * imagearray = [NSMutableArray array];

    for (int i = 1; i<=17; i++) {

        //拼接图片的名字

        NSString *name = [NSString stringWithFormat:@"campFire%@%d",i<10?@"0":@"",i];

        //NSString *name = [NSString stringWithFormat:@"campFire%02d",i];

        UIImage * image = [UIImage imageNamed:name];

        [imagearray addObject:image];

    }

    UIImageView * view = [[UIImageView alloc]initWithFrame:CGRectMake(40, 40, 320-80, 568-80)];

    view.contentMode = UIViewContentModeScaleAspectFit;

    view.animationImages = imagearray;//直接接受数组

    view.animationDuration = 2;//时间

    view.animationRepeatCount = 0;//重复多少次 0表示无数次

    [view startAnimating];