iOS实现圆角效果

UIColor *color = [UIColor colorWithRed:0.95 green:0.95 blue:0.95 alpha:0];
[aImage setBackgroundColor:color]; //设置背景透明
/**设置图片圆角begin***/
aImage.layer.masksToBounds = YES;
aImage.layer.cornerRadius = 5.0;
aImage.layer.borderWidth = 0.5;
aImage.layer.borderColor = [[UIColor grayColor] CGColor];
/**设置图片圆角end**/</pre>