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我使用此代码向位于另一个视图上方的视图添加阴影。

CGRect rect = CGRectMake(90, 0, 230, 460);

FeedsViewController *feedsViewController = [[FeedsViewController alloc] init];
[feedsViewController.view setFrame:rect];
self.feedsViewController = feedsViewController;
[feedsViewController release];

[[feedsViewController.view layer] setShadowOffset:CGSizeMake(0, 1)];
[[feedsViewController.view layer] setShadowColor:[[UIColor darkGrayColor] CGColor]];
[[feedsViewController.view layer] setShadowRadius:3.0];
[[feedsViewController.view layer] setShadowOpacity:0.8];
[self.view.superview addSubview:feedsViewController.view];

但它不起作用,为什么?

4

1 回答 1

1

我只是忘记了

#import <QuartzCore/QuartzCore.h>

对此感到抱歉。

于 2011-11-26T17:12:41.743 回答