Question

我在iOS 8.3中访问iPad的照片和摄像机时遇到困难。我没有iPhone代码的问题。并且，此代码适用于iOS 7中的两个设备。不知道为什么在这一点上为什么会这样。当弹出窗口发生时，我选择“选择现有照片或视频”，没有其他任何事情发生。我确实设置了允许照片/视频库访问的应用权限。这是我的代码示例。有类似问题的人吗？

    - (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
        if (buttonIndex != 2) {
            imagePickerController = [[UIImagePickerController alloc] init];
            imagePickerController.allowsEditing = NO;
            imagePickerController.delegate = self;

            if (buttonIndex == 0) {
                imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera;

                [self presentViewController:imagePickerController animated:YES completion:nil];
            } else {

                imagePickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

                if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
                    popover = [[UIPopoverController alloc] initWithContentViewController:imagePickerController];

                    [popover presentPopoverFromRect:CGRectMake(54.0f, 120.0f, 660.0f, 380.0f) inView:self.view permittedArrowDirections:UIPopoverArrowDirectionUp animated:YES];

                } else {
                    [self presentViewController:imagePickerController animated:YES completion:nil];
                }
            }
        }
    }

Answer 1

哟必须检查你的viewcontroller是否为零。

如何使用iPad

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