FXBlurView用法

FXBlurView是UIView的子类，它实现毛玻璃效果的原理其实就是覆盖上一层FXBlurView的实例对象。

 - (void)viewDidLoad {

     [super viewDidLoad];

     UIImageView * imageView = [[UIImageView alloc] initWithFrame:self.view.bounds];

     imageView.image = [UIImage imageNamed:@"Default-Port-hd47"];

     [self.view addSubview:imageView];

     FXBlurView * aview = [[FXBlurView alloc] initWithFrame:CGRectMake(, , , )];

     aview.tintColor = [UIColor whiteColor];  //前景颜色

     aview.blurRadius = 20.0;                 //模糊半径

     aview.dynamic = YES;                     //动态改变模糊效果

     [self.view addSubview:aview];

     FXBlurView * bview = [[FXBlurView alloc] initWithFrame:CGRectMake(, , , )];

     bview.tintColor = [UIColor whiteColor];  //前景颜色

     bview.blurEnabled = YES;                //是否允许模糊，默认YES

     bview.blurRadius = 10.0;               //模糊半径

     bview.dynamic = YES;                   //动态改变模糊效果

     bview.iterations = ;                  //迭代次数：

     bview.updateInterval = 2.0;            //更新时间（不确定具体功能）

     /*

      blurRadius ＝ 1.0 && dynamic ＝ 100 的效果和 blurRadius ＝ 10.0 && dynamic ＝ 1的效果大致相同

      */

     [self.view addSubview:bview];

     FXBlurView * cview = [[FXBlurView alloc] initWithFrame:CGRectMake(, , , )];

     cview.blurRadius = 20.0;

     cview.tintColor = [UIColor whiteColor];

     [self.view addSubview:cview];

 }

demo下载：https://github.com/nicklockwood/FXBlurView