在移除動(dòng)畫(huà)之前, 首先得在 layer 上添加兩個(gè)動(dòng)畫(huà)
示例代碼:

CABasicAnimation *animation = [CABasicAnimation animation];
animation.keyPath = @"transform.rotation";
animation.duration = 2.0;
animation.byValue = @(M_PI * 2);
animation.delegate = self;

animation.removedOnCompletion = NO;
animation.fillMode = kCAFillModeForwards;
[self.layer addAnimation:animation forKey:@"rotateAnimation"];

CABasicAnimation *animation2 = [CABasicAnimation animation];
animation2.keyPath = @"transform.scale";
animation2.duration = 2.0;
animation2.toValue = @2.0;
animation2.delegate = self;

animation2.removedOnCompletion = NO;
animation2.fillMode = kCAFillModeForwards;
[self.layer addAnimation:animation2 forKey:@"scale"];

添加兩個(gè)按鈕來(lái)控制動(dòng)畫(huà)的 開(kāi)始 和 移除 操作, 代碼(略)

點(diǎn)擊開(kāi)始, 執(zhí)行上面的代碼

點(diǎn)擊結(jié)束:
1.移除制定動(dòng)畫(huà)

[self.layer removeAnimationForKey:@"rotateAnimation"];

2.移除所有動(dòng)畫(huà)

[self.layer removeAllAnimations];

查看動(dòng)畫(huà)結(jié)束時(shí)的打印:

#pragma mark Animation delegate
- (void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag{
    NSString *strAnimation = nil;
    if ([self.layer animationForKey:@"rotateAnimation"] == anim) {
        strAnimation = @"rotateAnimation";
    }
    if ([self.layer animationForKey:@"scale"] == anim){
        strAnimation = @"scaleAnimation";
    }
    NSLog(@"%@ stop finish: %@",strAnimation, flag? @"yes": @"no");
}

特別注意:
1.以上方法取值時(shí) 使用的是 animationForKey 而不是 valueForKey
2.一定要把 animation 的 removedOnCompletion 設(shè)置成 NO, 否則取不到值

執(zhí)行以上代碼后, 發(fā)現(xiàn)手動(dòng)結(jié)束動(dòng)畫(huà)時(shí), 圖像會(huì)還原到原來(lái)的位置.
解決方法:
在移除動(dòng)畫(huà)操作后添加以下代碼

// 動(dòng)畫(huà)移除后 保持在當(dāng)前位置
self.layer.transform = self.layer.presentationLayer.transform;

執(zhí)行之后效果如下:

效果圖.gif