iOS 设置View阴影

iOS 设置View投影

需要设置 颜色 阴影半径 等元素

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

    shadowView.frame = CGRectMake(, , , );

    shadowView.center = self.view.center;

    shadowView.backgroundColor = [UIColor whiteColor];

    //设置阴影颜色

    shadowView.layer.shadowColor = [UIColor colorWithRed:114.0/255.0 green:133.0/255.0 blue:152.0/255.0 alpha:1.0].CGColor;

    //设置阴影的透明度

    shadowView.layer.shadowOpacity = 0.1f;

    //设置阴影的偏移

    shadowView.layer.shadowOffset = CGSizeMake(30.0f, 10.0f);

    //设置阴影半径

    shadowView.layer.shadowRadius = 15.0f;

    //设置渲染内容被缓存

    shadowView.layer.shouldRasterize = YES;

    //超出父视图部分是否显示

    shadowView.layer.masksToBounds = NO;

    shadowView.layer.borderWidth  = 0.0;

    shadowView.layer.opaque = 0.10;

    shadowView.layer.cornerRadius = 3.0;

    //栅格化处理

    shadowView.layer.rasterizationScale = [[UIScreen mainScreen]scale];

    //正常矩形

    UIBezierPath *path = [UIBezierPath bezierPathWithRect:shadowView.bounds];

    shadowView.layer.shadowPath = path.CGPath;

    [self.view addSubview:shadowView];