iphone app 为图片添加边框
头文件中#import <QuartzCore/QuartzCore.h>
当然Framework中需要有QuartzCore.framework

UIImageView* leftView = [[UIImageView alloc] init];
leftView.contentMode = UIViewContentModeScaleAspectFit;
leftView.tag = AlbumTableViewCell_LeftImageView;


/*加边框＊/
leftView.layer.masksToBounds=YES;
leftView.layer.cornerRadius=2.0; //圆角弧度
leftView.layer.borderWidth=1.0; //边框宽
leftView.layer.borderColor=[[UIColor grayColor] CGColor];