Forked from w-i-n-s/gist:2ac5a02237cb32ab93901741e581d24b
Created
January 12, 2017 11:54
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Instagram-like heartbeat animation using CABasicAnimation & CAAnimationGroup
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NSMutableArray *animations = [NSMutableArray array]; | |
// Step 1 | |
{ | |
CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"transform.scale"]; | |
animation.toValue = @(1.3); | |
animation.duration = 0.3; | |
animation.fillMode = kCAFillModeForwards; | |
[animations addObject:animation]; | |
} | |
{ | |
CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"opacity"]; | |
animation.toValue = @(1.0); | |
animation.duration = 0.3; | |
animation.fillMode = kCAFillModeForwards; | |
[animations addObject:animation]; | |
} | |
// Step 2 | |
{ | |
CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"transform.scale"]; | |
animation.toValue = @(1); | |
animation.beginTime = 0.3; | |
animation.duration = 0.1; | |
animation.fillMode = kCAFillModeForwards; | |
[animations addObject:animation]; | |
} | |
// Step 3 | |
{ | |
CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"transform.scale"]; | |
animation.toValue = @(1.3); | |
animation.beginTime = 0.4; | |
animation.duration = 0.3; | |
animation.fillMode = kCAFillModeForwards; | |
[animations addObject:animation]; | |
} | |
{ | |
CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"opacity"]; | |
animation.toValue = @(0); | |
animation.beginTime = 0.4; | |
animation.duration = 0.3; | |
animation.fillMode = kCAFillModeForwards; | |
[animations addObject:animation]; | |
} | |
CAAnimationGroup *animationGroup = [CAAnimationGroup animation]; | |
animationGroup.animations = animations; | |
animationGroup.duration = 0.7; | |
animationGroup.fillMode = kCAFillModeForwards; | |
animationGroup.removedOnCompletion = YES; | |
[self.heartPopup.layer addAnimation:animationGroup forKey:nil]; |
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