iOS中怎么实现数字倍数动画效果

本篇文章为大家展示了iOS中怎么实现数字倍数动画效果，内容简明扼要并且容易理解，绝对能使你眼前一亮，通过这篇文章的详细介绍希望你能有所收获。

// 数字跳动动画- (void)labelDanceAnimation:(NSTimeInterval)duration { //透明度 CABasicAnimation *opacityAnimation = [CABasicAnimation animationWithKeyPath:@"opacity"]; opacityAnimation.duration = 0.4 * duration; opacityAnimation.fromValue = @0.f; opacityAnimation.toValue = @1.f; //缩放 CAKeyframeAnimation *scaleAnimation = [CAKeyframeAnimation animationWithKeyPath:@"transform.scale"]; scaleAnimation.duration = duration; scaleAnimation.values = @[@3.f, @1.f, @1.2f, @1.f]; scaleAnimation.keyTimes = @[@0.f, @0.16f, @0.28f, @0.4f]; scaleAnimation.removedOnCompletion = YES; scaleAnimation.fillMode = kCAFillModeForwards; CAAnimationGroup *animationGroup = [CAAnimationGroup animation]; animationGroup.animations = @[opacityAnimation, scaleAnimation]; animationGroup.duration = duration; animationGroup.removedOnCompletion = YES; animationGroup.fillMode = kCAFillModeForwards; [self.comboLabel.layer addAnimation:animationGroup forKey:@"kComboAnimationKey"];}

利用一个透明度从 0 ~ 1之间的alpha,然后缩放 之后加到动画组实现一下就好了

切记动画完成最好移除 否则可能引起动画内存问题

这里设置斜体字体

self.comboLabel.font = [UIFont fontWithName:@"AvenirNext-BoldItalic" size:50];

看着比较明显

最后按钮点击的时候调用

- (IBAction)clickAction:(UIButton *)sender { self.danceCount++; [self labelDanceAnimation:0.4]; self.comboLabel.text = [NSString stringWithFormat:@"+ %tu",self.danceCount];}

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