本文详细介绍了如何使用UIImageView和CALayer进行属性设置，并通过实例展示了边框、圆角等效果的应用。
UIImageView *headerImage = [[UIImageView alloc] initWithFrame:CGRectMake(10.0,10.0, 64.0, 64.0)];
headerImage.image = contactPhoto;
CALayer * layer = [headerImage layer];
[layer setMasksToBounds:YES];
[layer setCornerRadius:10.0];
[layer setBorderWidth:1.0];
[layer setBorderColor:[[UIColor blackColor] CGColor]];
[contactHeader addSubview:headerImage];
headerImage.image = contactPhoto;
CALayer * layer = [headerImage layer];
[layer setMasksToBounds:YES];
[layer setCornerRadius:10.0];
[layer setBorderWidth:1.0];
[layer setBorderColor:[[UIColor blackColor] CGColor]];
[contactHeader addSubview:headerImage];
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