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如何在iOS中检查UIPopOverController的解除?

uipopovercontroller ios

-1

Fire Fist · 技术社区 · 11 年前

我需要设置 UIPopOverController 从库中选择照片。

所以我写了以下代码。

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,我用以下代码驳回了PopOver。

[self.imagePickerPopover dismissPopoverAnimated:NO];

我需要显示从照片库中选择的图像,所以我在- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info 方法

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。我该如何检查 UIPopOver控制器 ?

2 回复 | 直到 11 年前

1

2

Hooda 11 年前

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

这是popover控制器解除时的委托方法

2

1

Noor Ryan 11 年前

将popover的委托设置为self,也可以使用两个popover委托,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;