CABasicAnimation动画
- (void)animationBaseTest {
CABasicAnimation *baseAnimate = [CABasicAnimation animationWithKeyPath:@"transform.scale"];
baseAnimate.toValue = @(0);
baseAnimate.duration = 0.8;
baseAnimate.repeatCount = MAXFLOAT;
baseAnimate.autoreverses = YES;
[self.heart.layer addAnimation:baseAnimate forKey:@"scaleAnimate"];
}