Question

我想在iPad上使用相机，我必须在iPad上使用UIPopoverController。无论UIPopoverController声明强大，我都会收到以下错误！

*** Terminating app due to uncaught exception 'NSGenericException', reason: '-[UIPopoverController dealloc] reached while popover is still visible.'

以下是我的代码。谁能告诉我我做错了什么？我已经完成了关于SO的大部分相关问题，但是大多数人都说UIPopoverController很强，我已经在做了！

#import "ImagePickerController.h"

@interface ImagePickerController()
    @property(nonatomic, strong) UIPopoverController *popoverController;
@end

@implementation ImagePickerController

@synthesize imageName;
@synthesize popoverController;

- (void)didReceiveMemoryWarning
{
    // Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];
}

- (void)viewDidUnload
{
    [super viewDidUnload];
}

#pragma mark - UIImagePickerController Delegate

-(void) captureImageFromCamera:(UIViewController*)view
{

        UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];
        imagePickerController.delegate = self;
        self.popoverController = [[UIPopoverController alloc] initWithContentViewController:imagePickerController];
        self.popoverController.delegate = self;
        [self.popoverController presentPopoverFromRect:view.view.bounds inView:view.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
}

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info 
{
    [picker dismissModalViewControllerAnimated:YES];
}

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker 
{
    [picker dismissModalViewControllerAnimated:YES];
}

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary *)editingInfo
{
[picker dismissModalViewControllerAnimated:YES];
}

#pragma mark - UIPopoverController Delegate

- (void)popoverControllerDidDismissPopover:(UIPopoverController *)popoverController
{

}

- (BOOL)popoverControllerShouldDismissPopover:(UIPopoverController *)popoverController
{
    return YES;
}

@end

Answer 1

在这种情况下，PopoverController拥有ImagePicker所以问题是（可能）你正在解雇ImagePicker而不是容器PopoverController。

你打电话的地方

[picker dismissModalViewControllerAnimated:YES];

使用

[self.popoverController dismissPopoverAnimated:YES];

Theres无需明确解除ImagePicker

Answer 2

尝试添加@property(nonatomic, strong) UIImagePickerController *imagePickerController;

合成它@synthesize imagePickerController;

并更改imagePickerController方法captureImageFromCamera，如下所示：

imagePickerController = [[UIImagePickerController alloc] init];

Answer 3

我无法解决我的问题，但this也像iOS 5上的魅力一样。感谢http://www.techotopia.com！

ARC环境中的iPad上的UIPopoverController和UIImagePickerController

3 个答案: