如何在 iPad 上关闭 UIImagePickerController

Posted 2023-03-12

【中文标题】如何在 iPad 上关闭 UIImagePickerController

【英文标题】：How to dismiss UIImagePickerController on iPad

【发布时间】：2015-08-12 14:07:04

【问题描述】：

我正在使用UIImagePickerController。

UIImagePickerController *picker = [[UIImagePickerController alloc] init];    
picker.delegate = self;
picker.allowsEditing = YES;
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
popover = [[UIPopoverController alloc] initWithContentViewController:picker];
[popover presentPopoverFromRect:CGRectMake(0, 10, 500, 500) inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];

当我使用来自画廊类委托的任何照片时，didFinishPickingMediaWithInfo 会被调用。

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info 

    NSLog(@"inside Delegate image pick");

    [popover dismissPopoverAnimated:YES];
    [picker dismissViewControllerAnimated:YES completion:NULL];

这很好，但我在使用 imagePickerControllerDidCancel 委托方法时遇到了问题。

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker 

    NSLog(@"inside Cancel ");

    [popover dismissPopoverAnimated:YES];

    [picker dismissViewControllerAnimated:YES completion:NULL];

imagePickerControllerDidCancel 从未被调用，我不知道为什么。用户单击取消时如何关闭弹出框？

【参考方案1】：

如果imagePickerControllerDidCancel 没有被调用，则意味着您需要实现UIImagePickerControllerDelegate

例子

@interface ImageViewController : UIViewController<UIImagePickerControllerDelegate>