Ios uialertcontroller uiimagepicker dismiss : app crash - ios

Question

I have created a new app under xcode 6 and an old cold no more work.
Since iOS 8 we use UIalertcontroller to show action sheet
I use it to lauch photolibrary and select a picture but when I want to dismiss the picker, my app crash and I don't know why.
Below my code:
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES;
UIAlertController * uiViewActionSheet= [UIAlertController
alertControllerWithTitle:#"Action"
message:nil
preferredStyle:UIAlertControllerStyleActionSheet];
UIAlertAction* chooseExisting = [UIAlertAction
actionWithTitle:NSLocalizedString(#"CHOOSE_EXISTING",#"Choose Existing")
style:UIAlertActionStyleDefault
handler:^(UIAlertAction * action)
{
//Do some thing here
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
[self presentViewController:picker animated:YES completion:NULL];
[uiViewActionSheet dismissViewControllerAnimated:YES completion:nil];
}];
UIAlertAction* cancel = [UIAlertAction
actionWithTitle:#"Cancel"
style:UIAlertActionStyleCancel
handler:^(UIAlertAction * action)
{
[uiViewActionSheet dismissViewControllerAnimated:YES completion:nil];
}];
[uiViewActionSheet addAction:chooseExisting];
[uiViewActionSheet addAction:cancel];
[self presentViewController:uiViewActionSheet animated:YES completion:nil];
Below the imagepicker function :
(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
UIImage *chosenImage = info[UIImagePickerControllerEditedImage];
self.uImageProfile.image = chosenImage;
self.lstatutImage.text = #"save";
[picker.presentingViewController dismissViewControllerAnimated:YES completion:nil];
if(picker.sourceType == UIImagePickerControllerSourceTypeCamera)
{
UIImageWriteToSavedPhotosAlbum(chosenImage, nil, nil, nil);
}
__block NSString* resultSaveImage = #"";
//Save image onthe server
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
resultSaveImage = [controllerObject saveProfileImage:self.uImageProfile.image];
dispatch_async(dispatch_get_main_queue(), ^{
if(![resultSaveImage isEqualToString:#"\"ok\""])
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:NSLocalizedString(#"ERROR",#"Error") message:resultSaveImage delegate:self cancelButtonTitle:#"Ok" otherButtonTitles:nil, nil];
[alert show];
}
});
});
}
My code crash here :
[picker.presentingViewController dismissViewControllerAnimated:YES completion:nil];
Have you any idea ?

Answer 1

You're dismissing the picker, and then calling it:
[picker.presentingViewController dismissViewControllerAnimated:YES completion:nil];
if(picker.sourceType == UIImagePickerControllerSourceTypeCamera) {...
You also don't need the [uiViewActionSheet dismissViewControllerAnimated:YES completion:nil]; lines!
Try moving the dismiss line to the end. If it still crashes, it might be that the presentingViewController is not alive anymore.