相关疑难解决方法(0)

是否可以使用标准属性语法将块作为属性？

ARC有什么变化吗？

我正在尝试使用自定义segue来执行一种缩放动画.执行转换时,sourceViewController变黑,然后进行缩放.

试图将pushViewController:设置为完成块,但根本不执行转换.

- (void)perform {

    UIViewController *sourceViewController = (UIViewController *) self.sourceViewController;
    UIViewController *destinationViewController = (UIViewController *) self.destinationViewController;

    [destinationViewController.view setTransform:CGAffineTransformMakeScale(0.5,0.5)];
    [destinationViewController.view setAlpha:0.0];

    [UIView animateWithDuration:0.5
                          delay:0.0
                        options:UIViewAnimationCurveEaseOut 
                     animations:^{
                         [destinationViewController.view setTransform:CGAffineTransformMakeScale(1.0,1.0)];
                         [destinationViewController.view setAlpha:1.0];
                         [sourceViewController.navigationController pushViewController:destinationViewController animated:NO];
                     } 
                     completion:^(BOOL finished){
                     }];

}

我做错了什么？