Question

所以我想在加载屏幕上设置UIImageView动画，我被告知内置的“animationImages”方法会占用大量内存并且编程错误所以我不会使用它，我也有问题有了它，但除此之外。

下面的代码几乎可以正常工作，但即使我放了3秒，它的动画速度太快了。

func animate() {

    UIView.animateWithDuration(3, animations: { () -> Void in

        self.logoImageView.image = UIImage(named: "00")
        self.logoImageView.image = UIImage(named: "02")
        self.logoImageView.image = UIImage(named: "03")
        self.logoImageView.image = UIImage(named: "04")
        self.logoImageView.image = UIImage(named: "05")
        self.logoImageView.image = UIImage(named: "06")
        self.logoImageView.image = UIImage(named: "07")
        self.logoImageView.image = UIImage(named: "08")
        self.logoImageView.image = UIImage(named: "09")
        self.logoImageView.image = UIImage(named: "10")
        self.logoImageView.image = UIImage(named: "11")
        self.logoImageView.image = UIImage(named: "12")
        self.logoImageView.image = UIImage(named: "13")
        self.logoImageView.image = UIImage(named: "14")
        self.logoImageView.image = UIImage(named: "15")
        self.logoImageView.image = UIImage(named: "16")
        self.logoImageView.image = UIImage(named: "17")
        self.logoImageView.image = UIImage(named: "18")
        self.logoImageView.image = UIImage(named: "19")
        self.logoImageView.image = UIImage(named: "20")
        self.logoImageView.image = UIImage(named: "21")
        self.logoImageView.image = UIImage(named: "22")
        self.logoImageView.image = UIImage(named: "23")
        self.logoImageView.image = UIImage(named: "24")
        self.logoImageView.image = UIImage(named: "25")
        self.logoImageView.image = UIImage(named: "26")

        }) { (success) -> Void in

            self.fadeInLabel()
    }

但是，下面的代码在欢迎标签中淡出并且工作正常，所以我想知道上面的问题是什么。谢谢您的帮助！

func fadeInLabel() {

    UIView.animateWithDuration(2, animations: { () -> Void in

        self.labelImageView.alpha = 1

        }) { (success) -> Void in

          self.performSelector("pushToCreateVC", withObject: self, afterDelay: 1)
    }

}

Answer 1

如果您想动画图片，可以使用animationImages

的UIImageView属性

self.logoImageView.animationImages = imagesListArray;
self.logoImageView.animationDuration = 3.0
self.logoImageView.startAnimating()

其中imagesListArray是您想要制作动画的图像数组

<强> OR

如果您想使用自定义动画为图像设置动画，您可以使用下面的代码，我使用UIViewAnimationOptionTransitionFlipFromLeft动画选项.Beowcode在Obj-C中，我希望您可以映射语义。

// in view Load
 _slide = 0
 [self changeSlide];

// Loop gallery 
NSTimer *timer = [NSTimer timerWithTimeInterval:5.0f target:self selector:@selector(changeSlide) userInfo:nil repeats:YES];
[[NSRunLoop mainRunLoop] addTimer:timer forMode:NSRunLoopCommonModes];


- (void)changeSlide
{

if(_slide > _galleryImages.count-1) _slide = 0;

UIImage *toImage = [UIImage imageNamed:_galleryImages[_slide]];
[UIView transitionWithView:_yourimageView
              duration:0.6f
               options:UIViewAnimationOptionTransitionFlipFromLeft
            animations:^{
                _yourimageView.image = toImage;

            } completion:nil];
_slide++;

}

Answer 2

我遇到了animationImages方法的问题，该方法在完成时将imageView恢复为原始图像。我不确定是否有更好的方法，但我最终使用了一个计时器，因此imageView保留了最后一个图像。

var counter = 0
var timer = NSTimer()
@IBAction func countButton(sender: UIButton) {

    timer.invalidate()
    timer = NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: "timerAction", userInfo: nil, repeats: true)

}

func timerAction() {
    ++counter
    switch counter{
    case 1 :
        image1.image = UIImage(named:"Bird-1.gif")
    case 2 :
        image1.image = UIImage(named:"Bird-2.gif")
    case 3 :
        image1.image = UIImage(named:"Bird-3.gif")
    case 4 :
        image1.image = UIImage(named:"Bird-4.gif")
    case 5 :
        image1.image = UIImage(named:"Bird-5.gif")
    case 6 :
        counter = 0
        timer.invalidate()
    default :
        print("Error")
    }
}

ImageView动画，循环遍历图像

2 个答案: