UImageview加边框加阴影-优快云博客

本文展示了如何使用Objective-C为UIImageView添加边框、设置边框颜色、宽度及四个方向的阴影效果，并通过CALayer调整ImageView的外观，包括设置圆角、边框样式等。

2012-03-22

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;
//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;

//设置layer

CALayer *layer=[backView layer];

//是否设置边框以及是否可见

[layer setMasksToBounds:YES];

//设置边框圆角的弧度

[layer setCornerRadius:10.0];

//设置边框线的宽

[layer setBorderWidth:1];

//设置边框线的颜色

[layer setBorderColor:[[UIColor blackColor] CGColor]];

转载于:https://www.cnblogs.com/Rampage/archive/2012/03/22/2411246.html