ios - 如何做放大和变换动画？

Question

很清楚如何进行放大/缩放 animation以及如何将图像动画化为 another .但是我需要一个图像来放大并中途转换为另一个图像。怎么做到的？

Answer 1

此代码将为您工作。

[UIView animateWithDuration:2.0 animations:^{
    imgView.transform = CGAffineTransformMakeScale(1.5, 1.5);
}
                 completion:^(BOOL finished){
                     [UIView transitionWithView:self.view
                                       duration:2.0f
                                        options:UIViewAnimationOptionTransitionCrossDissolve
                                     animations:^{
                                         [imgView setImage:[UIImage imageNamed:@"default_avatar"]];
                                         imgView.transform = CGAffineTransformMakeScale(2.0, 2.0);
                                     } completion:nil];
                        }];