Dismiss UIImagePickerController

问题

I have tried every variation of dismissing a UIImagePickerController with out any luck. What am i doing wrong.

- (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
}

I have tried to present the picker from the parent, grandparent, navigationController and root controller and nothing works. What ever i do i cant dismiss the ImagePickerController.

Please note the log statement gets called every time.

Cheers

回答1:

Try this line. It might work for you.

[self.picker dismissModalViewControllerAnimated:NO];

And for iOS 6 and later use this

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

Also use this code to present your picker controller

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];
}

回答2:

Are you running iOS 6? If so, presentModalViewController: is deprecated and could be causing some unexpected results. Try using presentViewController:animated:completion: instead.

But technically, here's all you should have to do:

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

回答3:

For Swift use this:

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

回答4:

For Swift 4:

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

来源：https://stackoverflow.com/questions/16475506/dismiss-uiimagepickercontroller

标签

ios

objective-c

uiimagepickercontroller