UIView* backGround = [[UIView alloc]init];

[self.view addSubview:backGround];

backGround.backgroundColor = [UIColor colorWithHex:0xffffff];

backGround.frame = CGRectMake(15, 15, [UIScreen mainScreen].bounds.size.width-15*2, 180);//8

backGround.layer.cornerRadius = 10;

//添加阴影

backGround.layer.shadowOpacity=1;

backGround.layer.shadowColor = [UIColor colorWithHex:0x000000].CGColor;

backGround.layer.borderWidth = 1;//距离2px

backGround.layer.borderColor = [UIColor colorWithHex:0xFFFFFF].CGColor;

backGround.layer.opaque = 0.06;//透明度6%

backGround.layer.masksToBounds = YES;//是否裁剪

backGround.layer.shadowOffset = CGSizeZero;//投影偏移

backGround.layer.shadowRadius = 4;//大小为8px