Question

目前，当用户按下按钮时，我正在处理一个带有MapView的项目，该项目会显示一个modalView。

modalView使用iOS 8的典型模糊效果。

问题是，我可以使用模糊效果呈现Modelview，并且可以解除它，但我无法移除地图的模糊效果。

当前代码：

ViewController.m

- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
    NSString *buttonTitle = [actionSheet buttonTitleAtIndex:buttonIndex];
    if  ([buttonTitle isEqualToString:@"Set a alarm"]) {

        [self blurEffectMethod];

        AlarmViewController *modal = [self.storyboard instantiateViewControllerWithIdentifier:@"setAlarm"];
        modal.transitioningDelegate = self;
        modal.modalPresentationStyle = UIModalPresentationOverCurrentContext;
        [self presentViewController:modal animated:YES completion:nil]

-(void)blurEffectMethod {
    UIVisualEffect *blurEffect;
    blurEffect = [UIBlurEffect effectWithStyle:UIBlurEffectStyleLight];
    UIVisualEffectView *visualEffectView;

    if (_radiusSlider.hidden == NO) {
        visualEffectView = [[UIVisualEffectView alloc] initWithEffect:blurEffect];
        visualEffectView.frame = _mapView.bounds;
        [_mapView addSubview:visualEffectView];
        //Hide Bars & Slider
        [self.navigationController setNavigationBarHidden:YES animated:YES];
        [[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationSlide];
        _toolBar.hidden = YES ;
        _radiusSlider.hidden= YES;
        _sliderIndicator.hidden = YES;
    }

}

ModelViewController.m

- (IBAction)dismisModal:(id)sender {
    [_audioPlayer stop];
    [self dismissViewControllerAnimated:YES completion:nil];
}

如何在解除modalView时从mapView中删除blur SubView？

Answer 1

这就是我设法让模态模糊起作用的方法！

let vc = UIViewController()
vc.view = UIVisualEffectView(effect: UIBlurEffect(style: .Light))
vc.modalPresentationStyle = .OverFullScreen

let nc = UINavigationController(rootViewController: vc)
nc.modalPresentationStyle = .OverFullScreen

presentViewController(nc, animated: true, completion: nil)

这里我在prepareForSegue上使用.OverFullScreen标志。在我的viewControllers上设置了一个模糊的UIVisualEffectView

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
    // Get the new view controller using segue.destinationViewController.
    // Pass the selected object to the new view controller.
    if segue.identifier == "LifeEventSegue" {
        if let nc = segue.destinationViewController as? UINavigationController {
            nc.modalPresentationStyle = .OverFullScreen
            if let vi = nc.viewControllers.first as? UIViewController {
                vi.modalPresentationStyle = .OverFullScreen
            }
        }
    }
}

删除模态视图后删除模态模糊效果

1 个答案: