UIBlurEffect*blurView = [UIBlurEffect effectWithStyle:UIBlurEffectStyleLight];
shareView.visualEffectView= [[UIVisualEffectView alloc] initWithEffect: blurView];
shareView.visualEffectView.frame=CGRectMake(0, [UIScreen mainScreen].bounds.size.height- containerHeight, [UIScreen mainScreen].bounds.size.width, containerHeight);
shareView.visualEffectView.alpha=0.8;
[shareView addSubview: shareView.visualEffectView];
typedefNS_ENUM(NSInteger, UIBlurEffectStyle) {
UIBlurEffectStyleExtraLight,//额外亮度，（高亮风格）
UIBlurEffectStyleLight,//亮风格
UIBlurEffectStyleDark,//暗风格
UIBlurEffectStyleExtraDark,//额外暗
UIBlurEffectStyleRegular,// 常规，适应用户界面风格
UIBlurEffectStyleProminent,// 著名的，适应用户界面风格
}NS_ENUM_AVAILABLE_IOS(8_0);
