Question

我需要设置UIPopOverController以从库中选择照片。

所以我写下面的代码。

self.imagePickerController = [[UIImagePickerController alloc] init];
    self.imagePickerController.modalPresentationStyle = UIModalPresentationCurrentContext;
    self.imagePickerController.sourceType = sourceType;
    [self.imagePickerController setDelegate:self];

    UIPopoverController *popover = [[UIPopoverController alloc] initWithContentViewController:self.imagePickerController];

    [popover presentPopoverFromRect:self.btnArchive.frame inView:self.view permittedArrowDirections:UIPopoverArrowDirectionRight animated:YES];
    imagePickerPopover = popover;

它出现了，我从照片库中选择了一张照片，在我从库中选择后，我用以下代码解雇了PopOver。

[self.imagePickerPopover dismissPopoverAnimated:NO];

我需要显示从照片库中选择的图像，因此我在 - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info方法中编写以下代码。

UIImage *image = [info valueForKey:UIImagePickerControllerOriginalImage];

[self dismissViewControllerAnimated:YES completion:^ {

// Codes Here after dismiss PopOverView and chosen photo from library

}];

但它不起作用。如何使用UIPopOverController进行检查？

Answer 1

- (BOOL)popoverControllerShouldDismissPopover:(UIPopoverController *)popoverController   
- (void)popoverControllerDidDismissPopover:(UIPopoverController *)popoverController

当弹出控制器解除

时，这是委托方法

Answer 2

将popover的委托设置为self，你也可以使用两个popover代理，即

/* Called on the delegate when the popover controller will dismiss the popover. Return NO to prevent the dismissal of the view.
 */
- (BOOL)popoverControllerShouldDismissPopover:(UIPopoverController *)popoverController;
/* Called on the delegate when the user has taken action to dismiss the popover. This is not called when -dismissPopoverAnimated: is called directly.
 */
- (void)popoverControllerDidDismissPopover:(UIPopoverController *)popoverController;

然后将MainViewController实例设置为popover

的委托

popover.delegate = self;

如何在iOS中检查UIPopOverController的解散？

2 个答案: