如何在 iPad 上关闭 UIImagePickerController答案

【问题标题】：How to dismiss UIImagePickerController on iPad如何在 iPad 上关闭 UIImagePickerController
【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？

【问题讨论】：

标签： ios ipad uiimagepickercontroller

【解决方案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>

【讨论】：