Question

我有点困惑，这不是关于如何解雇UIImagePickerController的问题，它更像是一个“为什么那样工作”类型的问题。我在iOS7工作。

在线查看苹果文档（此链接：https://developer.apple.com/library/ios/documentation/AudioVideo/Conceptual/CameraAndPhotoLib_TopicsForIOS/Articles/TakingPicturesAndMovies.html#//apple_ref/doc/uid/TP40010406-SW6），我发现以下代码解雇了UIImagePickerController：

[[picker parentViewController] dismissModalViewControllerAnimated: YES];

编辑：我知道该方法已被弃用，因此我尝试了以下操作，但这也不起作用：

[[picker parentViewController] dismissViewControllerAnimated:YES completion:NULL];

那些对我不起作用。然而，这确实有效：

[picker dismissViewControllerAnimated:YES completion:NULL];

Apple文档错了吗？还是刚刚过时？
为什么第二位代码有效，因为根据我的理解，它的父视图控制器工作可以解除类似于弹出窗口的东西，或者在这种情况下是UIImagePickerController

谢谢。

编辑：这是我呈现UIImagePickerController的方式，UITapGestureRecognizer调用第一个方法然后调用第二个方法。

- (IBAction)captureMoment:(UITapGestureRecognizer *)sender {
    [self startCameraCaptureFromViewController:self usingDelegate:self];
}

- (BOOL)startCameraCaptureFromViewController:(UIViewController *)controller
                               usingDelegate:(id <UIImagePickerControllerDelegate, UINavigationControllerDelegate>)delegate {

    if (delegate == nil || controller == nil || [UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera] == NO) {
        return NO;
    }

    UIImagePickerController *camera = [[UIImagePickerController alloc] init];
    camera.sourceType = UIImagePickerControllerSourceTypeCamera;

    camera.allowsEditing = NO;

    camera.delegate = delegate;

    [controller presentViewController:camera animated:YES completion:NULL];

    return YES;
}

Answer 1

有两种方法对我有用

使用picker.presentingViewController代替picker.parentViewController，由rmaddy
在imagePickerControllerDidCancel:，[picker dismissViewControllerAnimated:YES completion:NULL];

以下是完整的代码，它放在呈现UIImagePickerController的UIViewController中：

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
    [picker.presentingViewController dismissViewControllerAnimated:YES completion:NULL];
}

Answer 2

自iOS6以来，方法dismissModalViewControllerAnimated已被弃用。您使用的新方法是正确的。

了解如何解雇UIImagePickerController

2 个答案: