你好，光标所在的地方有一个不寻常的阴影，请帮我删除它，如屏幕截图所示。？提前致谢//settheshadowofviewloginView.backgroundColor=UIColor(red:255.0/255.0,green:255.0/255.0,blue:255.0/255.0,alpha:0.6)loginView.layer.shadowRadius=10loginView.layer.shadowOffset=CGSizeMake(0,0)loginView.layer.shadowColor=UIColor.blackColor().CGColorloginView.