iOS开发 view添加阴影

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创建控件

        UIView * view = [[UIView alloc] initWithFrame:CGRectMake(WIDTH/2-85, self.frame.size.height-15, 170, 30)];

        view.hidden = YES;

        view.backgroundColor = [UIColor whiteColor];

        view.clipsToBounds = YES;

        view.layer.cornerRadius = 5;

        [self addSubview:view];

添加阴影

        UIBezierPath *shadowPath = [UIBezierPath

                                    bezierPathWithRect:view.bounds];

        view.layer.masksToBounds = NO;

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        view.layer.shadowColor = [UIColor lightGrayColor].CGColor;

        view.layer.shadowOffset = CGSizeMake(0.0f, 1.0f);

        view.layer.shadowOpacity = 0.5f;

        view.layer.shadowPath = shadowPath.CGPath;