添加阴影

//给iamgeview添加阴影 和边框

UIImageView * imgvPhoto = [UIImageView alloc] init];

//添加边框

CALayer * layer = [_imgvPhoto layer];

layer.borderColor = [

[UIColor whiteColor] CGColor];

layer.borderWidth = 5.0f;

//添加四个边阴影

_imgvPhoto.layer.shadowColor = [UIColor blackColor].CGColor;

_imgvPhoto.layer.shadowOffset = CGSizeMake(0, 0);

_imgvPhoto.layer.shadowOpacity = 0.5;

_imgvPhoto.layer.shadowRadius = 10.0;给iamgeview添加阴影 < wbr > 和边框

//添加两个边阴影

_imgvPhoto.layer.shadowColor = [UIColor blackColor].CGColor;

_imgvPhoto.layer.shadowOffset = CGSizeMake(4, 4);

_imgvPhoto.layer.shadowOpacity = 0.5;

_imgvPhoto.layer.shadowRadius = 2.0;