动画执行

[UIView animateWithDuration:0.1f delay:0 options:UIViewAnimationOptionBeginFromCurrentState | UIViewAnimationOptionCurveEaseInOut

animations:^{

self.imageView.transform = CGAffineTransformMakeScale(1.5f, 1.5f);

} completion:^(BOOL finished) {

[UIView animateWithDuration:0.1f delay:0 options:UIViewAnimationOptionBeginFromCurrentState | UIViewAnimationOptionCurveEaseInOut

animations:^{

self.imageView.transform = CGAffineTransformMakeScale(0.9, 0.9);

} completion:^(BOOL finished) {

[UIView animateWithDuration:0.1f delay:0 options:UIViewAnimationOptionBeginFromCurrentState | UIViewAnimationOptionCurveEaseInOut

animations:^{

self.imageView.transform = CGAffineTransformMakeScale(1.0f, 1.0f);

} completion:^(BOOL finished) {

completion(self.isSelected);

}];

}];

}

];