色调特效,黑白特殊,高斯模糊
// 添加自定义色调特效 [WJEffectView addEffectViewToView:self.imageView tintColor:[UIColor colorWithWhite:0.11 alpha:0.73]];
// 添加黑白色调特效 [WJEffectView addGrayEffectViewToView:self.imageView];
// 添加高斯模糊特效 [WJEffectView addBlurEffectFilterToView:self.imageView radius:3];
// 清除特效 [WJEffectView clearEffectForView:self.imageView];
