【移動(dòng)應(yīng)用開發(fā)技術(shù)】iOS如何實(shí)現(xiàn)數(shù)字倍數(shù)動(dòng)畫效果

【移動(dòng)應(yīng)用開發(fā)技術(shù)】iOS如何實(shí)現(xiàn)數(shù)字倍數(shù)動(dòng)畫效果

在下給大家分享一下iOS如何實(shí)現(xiàn)數(shù)字倍數(shù)動(dòng)畫效果，相信大部分人都還不怎么了解，因此分享這篇文章給大家參考一下，希望大家閱讀完這篇文章后大有收獲，下面讓我們一起去了解一下吧！前言一個(gè)簡(jiǎn)單的利用透明度和縮放實(shí)現(xiàn)的數(shù)字倍數(shù)動(dòng)畫效果圖：實(shí)現(xiàn)思路上代碼看比較清晰//

數(shù)字跳動(dòng)動(dòng)畫

-

(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;

//縮放

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;

[boLabel.layer

addAnimation:animationGroup

forKey:@"kComboAnimationKey"];

}利用一個(gè)透明度從0~1之間的alpha,然后縮放之后加到動(dòng)畫組實(shí)現(xiàn)一下就好了切記動(dòng)畫完成最好移除否則可能引起動(dòng)畫內(nèi)存問(wèn)題切記動(dòng)畫完成最好移除否則可能引起動(dòng)畫內(nèi)存問(wèn)題這里設(shè)置斜體字體boLabel.font

=

[UIFont

fontWithName:@"AvenirNext-BoldItalic"

size:50];看著比較明顯最后按鈕點(diǎn)擊的時(shí)候調(diào)用-

(IBAction)clickAction:(UIButton

*)sender

{

self.danceCount++;

[self

labelDanceAnimation:0.4];

boLabel.text

=

[NSString

stringWithForma