关闭UIImagePickerController

Question

我已经尝试了解除UIImagePickerController的所有变化，但没有运气。我究竟做错了什么。

- (IBAction)choosePhoto
{
    self.picker = [[UIImagePickerController alloc] init];
    self.picker.delegate = self;
    self.picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    [self presentModalViewController:self.picker animated:YES];

}

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)imagePicker
{
    NSLog(@"dismiss image picker");
    [self dismissModalViewControllerAnimated:NO];
    [[self.picker parentViewController] dismissModalViewControllerAnimated:NO];
    [self.presentedViewController dismissModalViewControllerAnimated:NO];
    [self.presentingViewController dismissModalViewControllerAnimated:NO];
     // And every other way i could think of
}

- (void)imagePickerController:(UIImagePickerController *)imagePicker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
    .. same stuff here
}

我试图从父，祖父母，navigationController和根控制器呈现选择器，没有任何作用。我做什么我不能解雇ImagePickerController。

请注意每次都会调用log语句。

干杯

Answer 1

试试这一行。它可能适合你。

[self.picker dismissModalViewControllerAnimated:NO];

对于iOS 6及更高版本，请使用此功能

[self.picker dismissViewControllerAnimated:NO completion:nil];

也可以使用此代码显示您的选择器控制器

if ([self respondsToSelector:@selector(presentViewController:animated:completion:)]){
    [self presentViewController:self.picker animated:YES completion:nil];
} else {
    //To target iOS 5.0
    [self presentModalViewController:self.picker animated:YES];
}

Answer 2

你在运行iOS 6吗？如果是这样，presentModalViewController:已被弃用，可能会导致一些意想不到的结果。尝试使用presentViewController:animated:completion:代替。

但从技术上讲，这就是你应该做的所有事情：

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)imagePicker
{
   [imagePicker dismissViewControllerAnimated:NO completion:nil];//Or call YES if you want the nice dismissal animation
}

Answer 3

对于Swift使用此：

func imagePickerControllerDidCancel(picker: UIImagePickerController!) {
    picker.dismissViewControllerAnimated(true, completion: nil)
}

Answer 4

对于Swift 4：

func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
        picker.dismiss(animated: true, completion: nil)
}