iOS开发——毛玻璃透明

// 虚拟交易费率弹窗
- (void)showRateInfo{
    
    
    self.rateInfoView = [[UIView alloc]initWithFrame:self.windowView.frame];
    //    rateInfoView.backgroundColor = [UIColor blackColor];
    self.rateInfoView.alpha = 0.f;
    [self.view addSubview:self.rateInfoView];
    
    //  创建需要的毛玻璃特效类型
    
    UIBlurEffect *blurEffect = [UIBlurEffect effectWithStyle:UIBlurEffectStyleDark];
    
    //  毛玻璃view 视图
    
    UIVisualEffectView *effectView = [[UIVisualEffectView alloc] initWithEffect:blurEffect];
    
    //添加到要有毛玻璃特效的控件中
    
    effectView.frame = self.windowView.frame;
    
    [self.rateInfoView addSubview:effectView];
    
    //设置模糊透明度
    
    effectView.alpha = .8f;
    
    UIImageView *rateImage = [[UIImageView alloc]initWithFrame:CGRectMake(Width*0.1, (Height-Width*0.8*1.11)/2+20, Width*0.8, Width*0.8/1.11)];
    rateImage.image        = [UIImage imageNamed:@"虚拟费率弹窗"];
    [self.rateInfoView addSubview:rateImage];
    
    UIButton *closeInfo = [UIButton buttonWithType:UIButtonTypeCustom];
    closeInfo.frame     = CGRectMake(Width*0.9-22-12, (Height-Width*0.8*1.11)/2+20+12, 22, 22);
    [closeInfo setImage:[UIImage imageNamed:@"cancel"] forState:UIControlStateNormal];
    [closeInfo addTarget:self action:@selector(closeRate) forControlEvents:UIControlEventTouchUpInside];
    [self.rateInfoView addSubview:closeInfo];
    
    [UIView animateWithDuration:0.2 animations:^{
        self.rateInfoView.alpha = 1.0f;
    }];
    
    
}

- (void)closeRate{
    
    [self.rateInfoView removeFromSuperview];
    
}