ios 图片动画

animationArray = [[NSMutableArray alloc]initWithCapacity:0];

    

    for (int i = 0; i < 52; i ++)

    {

        NSString *str;

        if (i < 10)

        {

            str = [NSString stringWithFormat:@"hall_01000%d.png",i];

        }

        else

        {

            str = [NSString stringWithFormat:@"hall_0100%d.png",i];

        }

        [animationArray addObject:str];

    }

    starImage = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"hall_010004.png"]];

    starImage.frame = CGRectMake(0, 0, 86/2, 79/2);

    starImage.center = ccp(P_WIDTH-30,25);

    [self  addSubview:starImage];

    

    starTimer = [NSTimer scheduledTimerWithTimeInterval:.1 target:self selector:@selector(transformImg) userInfo:nil repeats:YES];

}

- (void)transformImg

{

    NSString *starImgName = [animationArray objectAtIndex:index];

    starImage.image = [UIImage imageNamed:starImgName];

    index = ++ index % 51;

}