动画(两个图片切换)

#import "SZMLuckyController.h"

@interface SZMLuckyController ()
@property (weak, nonatomic) IBOutlet UIImageView *luckyLight;

@end

@implementation SZMLuckyController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    self.luckyLight.animationImages = @[
                                        [UIImage imageNamed:@"lucky_entry_light0"],
                                        [UIImage imageNamed:@"lucky_entry_light1"]
                                        ];
//切换间隔时间 
    self.luckyLight.animationDuration = 0.5;
//重复次数(0为一直重复)
    self.luckyLight.animationRepeatCount = 0;
    
    //启动动画
    [self.luckyLight startAnimating];
    
}