Dismiss a imagepickercontroller - ios

I'm trying to dismiss a imagepickercontroller (album or camera) which is presented as below
[self.view.window.rootViewController presentViewController:imagePicker animated:YES completion:nil];
By calling :
[self dismissViewControllerAnimated:YES completion:NULL];
I can't dismiss the imagepickercontroller.
Any body can help me on this?

I use this:
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
[self dismissViewControllerAnimated:YES completion:nil];
else
[popover dismissPopoverAnimated:YES];
Don't know whether the NULL rather than nil would matter, but it should be nil.
The picker is presented with the following code:
- (void)getVideoFromDevice
{
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) // for ipad only
{
UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
imagePicker.delegate = self;
imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
imagePicker.allowsEditing = NO;
imagePicker.videoQuality = UIImagePickerControllerQualityTypeLow;
imagePicker.mediaTypes = [NSArray arrayWithObjects:(NSString *)kUTTypeMovie, nil];;
popover = [[UIPopoverController alloc] initWithContentViewController:imagePicker];
[popover presentPopoverFromBarButtonItem:[self.navigationItem.rightBarButtonItems objectAtIndex:0] permittedArrowDirections: UIPopoverArrowDirectionAny animated:YES];
}
else // for iphone only - NOT TESTED
{
UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
imagePicker.delegate = self;
imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
[self presentViewController:imagePicker animated:YES completion:nil];
}
}
I haven't tested the code for iPhone yet but the iPad portion is working correctly.

You need to dismiss the UIImagePickerViewController in the delegate methods: imagePickerController: didFinishPickingMediaWithInfo: and imagePickerControllerDidCancel:. Just be sure to assign the UIImagePickerViewController delegate to the UIViewController that presents the UIImagePickerViewController.
Example:
- (void)imagePickerControllerDidCancel:(UIImagePickerController *) picker
{
[picker dismissViewControllerAnimated:YES completion:nil];
}
- (void) imagePickerController: (UIImagePickerController *) picker didFinishPickingMediaWithInfo: (NSDictionary *) info
{
[picker dismissViewControllerAnimated:YES completion:nil];
}

Related

dismiss UIImagePickerController without reloading its rootViewController

If I present a UIImagePickerController on a childViewController like this:
-(void)presentImagePicker{
UIViewController *childVC = [[UIViewController alloc] init];
[self addChildViewController:childVC];
ImagePickerController *imagePicker = [[ImagePickerController alloc] init];
imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
imagePicker.delegate = self;
[childVC presentViewController:imagePicker animated:YES completion:nil];
}
When I dismiss the childView:
-(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker{
NSArray *childVCArray = [self childViewControllers];
[[childVCArray firstObject] dismissViewControllerAnimated:YES completion:nil];
}
the rootViewController is re-initialized.
How can I prevent this behavior?

iOS App - Trying to Get iOS photo from gallery but getting an error

I'm new to iOS coding, so my apologies in advance. I know this topic has been covered many times (I searched) however I can't seem to resolve my problem, which is why I am posting.
I am trying to access the iOS photo gallery but I keep getting two errors:
One is
'Application tried to present a nil modal view controller on target .'
Edit: The above error was fixed by initing the _picker in ChooseExsisting, as was suggested in the comments.
The other
[CameraController ChooseExsiting:]: unrecognized selector sent to instance 0x157e11330'
My code is as follows:
- (IBAction)ChooseExsiting {
UIImagePickerController *pickerController = [[UIImagePickerController alloc]
init];
pickerController.delegate = self;
[self.picker setSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
[self presentViewController:_picker animated:YES completion:NULL]; }
I imagine my ChooseExsisting code is incorrect. Would anyone have any suggestions? I would greatly appreciate it.
In your ChooseExisting method, you instantiate a controller into a local variable, but then call present with _picker property variable which is probably nil. Either present the controller from the local variable or init the property like in TakePhoto method.
EDIT: As for the second part, both your IBActions have a wrong method signature if you are connecting them to Tap handlers in the Storyboard for example. They should look like this:
- (IBAction) TakePhoto:(id)sender
- (IBAction) ChooseExsiting:(id)sender
Change your ChooseExisitng method to below one:
- (IBAction)ChooseExsiting:(id) sender {
UIImagePickerController *pickerController = [[UIImagePickerController alloc]
init];
pickerController.delegate = self;
[pickerController setSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
[self presentViewController:pickerController animated:YES completion:NULL]; }
or
- (IBAction)ChooseExsiting:(id) sender {
self.picker = [[UIImagePickerController alloc]
init];
self.picker.delegate = self;
[self.picker setSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
[self presentViewController:self.picker animated:YES completion:NULL]; }
You can try this . It work for me
Follow below three steps1.First of all you need to add below delegate in .h file (UIImagePickerControllerDelegate,UIPickerViewDelegate)
2.Add below three methods in your controller
3. On button click call below methods
here choose photo for open gallary. so on button click call choose photo method
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
CGSize newSize=CGSizeMake(150, 150);
UIGraphicsBeginImageContextWithOptions(newSize, NO, 0.0);
[[info objectForKey:UIImagePickerControllerEditedImage] drawInRect:CGRectMake(0, 0, newSize.width, newSize.height)];
UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
img_profile_pic.image = newImage;
[self dismissViewControllerAnimated:YES completion:nil];
isProfilePic=TRUE;
}
- (void)showImagePickerForSourceType:(UIImagePickerControllerSourceType)sourceType
{
UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];
imagePickerController.allowsEditing = YES;
imagePickerController.modalPresentationStyle = UIModalPresentationCurrentContext;
imagePickerController.sourceType = sourceType;
imagePickerController.delegate = self;
imagePickerController = imagePickerController;
[self presentViewController:imagePickerController animated:YES completion:nil];
}
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
[self dismissViewControllerAnimated:YES completion:nil];
}
-(void) takePhoto{
[self showImagePickerForSourceType:UIImagePickerControllerSourceTypeCamera];
}
-(void) choosePhoto{
[self showImagePickerForSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
}
Instead of doing
if ([UIImagePickerController isSourceTypeAvailable:!UIImagePickerControllerSourceTypeCamera]) {
self.picker = [[UIImagePickerController alloc] init];
self.picker.delegate = self;
[self.picker setSourceType:UIImagePickerControllerSourceTypeCamera];
[self presentViewController:_picker animated:YES completion:NULL];
} }
You should do this
if ([UIImagePickerController isSourceTypeAvailable:!UIImagePickerControllerSourceTypeCamera]) {
if(!_picker){
_picker = [[UIImagePickerController alloc] init];
_picker.delegate = self;
[_picker setSourceType:UIImagePickerControllerSourceTypeCamera];
[self presentViewController:_picker animated:YES completion:NULL];
}else{
[self presentViewController:_picker animated:YES completion:NULL];
}}}
You should initialize _picker property before presenting it, right now you're trying to initialize local property of VC or you can also present self.picker instead of _picker in your code.

Using .xib file as the custom camera overlayview

I created a CameraOverlayViewController with .xib file to implement a customized camera overlayView with. The overlayView is just a transparent background with a button to select photo from the photoLibrary and it loads successfully in the mainViewController with the following code:
CameraOverlayViewController* overlay = [[CameraOverlayViewController alloc] initWithNibName:#"CameraOverlayViewController" bundle:nil];
cameraPicker.cameraOverlayView = overlay.view;
However, nothing happens when I pressed the button on the cameraOverlayView. No error messages, nothing. Does anyone know what's going on here? Below is my code in the CameraOverlayViewController file:
- (IBAction)select:(UIButton *)sender {
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
[self dismissViewControllerAnimated:YES completion:^{
[self presentViewController:picker
animated:YES completion:nil];
}];
picker.delegate = self;
picker.allowsEditing = YES;
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
[self presentViewController:picker animated:YES completion:NULL];
NSLog(#"Just work alrdy!!!");
}
Thanks in advance!
Try This..
-(IBAction)select:(UIButton *)sender {
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES;
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
[self dismissViewControllerAnimated:YES completion:^{
[self presentViewController:picker
animated:YES completion:nil]; ////////check this is called??????
}];
}

UIImagePickerController won't cancel, getting message about detached ViewControllers

I've not seen these two issues compounded together, so I figured I'd ask.
PhotoViewController
-(void)viewDidAppear:(BOOL)animated
{
UIImagePickerController *picker = [[UIImagePickerController alloc]init];
picker.delegate = self;
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]){
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
}
else if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeSavedPhotosAlbum]){
picker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
}
[self presentViewController:picker animated:YES completion:NULL];
}
-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
UIImage *image = info[UIImagePickerControllerEditedImage];
if(!image) image = info[UIImagePickerControllerOriginalImage];
picker.delegate = self;
[self setPhotoForNextVC:image];
[self dismissViewControllerAnimated:YES completion:nil];
[self performSegueWithIdentifier:#"givePhotoToGiveDetailsSegue" sender:self];
}
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
[self dismissViewControllerAnimated:YES completion:nil];
}
Selecting a photo works, but when I press cancel the UIImagePickerController keeps coming back up, and I get the error:
Presenting view controllers on detached view controllers is discouraged <UINavigationController: 0x10b38b560>.
I had faced this problem before as well.
For me it turned out to be that, especially in ViewDidAppear.
The OS doesn't like to put up new controllers right after another appears.
Make another method that handles this.
(void)bringUpCameraController {
UIImagePickerController *picker = [[UIImagePickerController alloc]init];
picker.delegate = self;
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]){
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
}
else if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeSavedPhotosAlbum]){
picker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
}
[self presentViewController:picker animated:YES completion:NULL];
}
My workaround :[self performSelector:<(bringUpCameraController)> withObject:<(nil)> afterDelay:<(2.0)>]
this will get rid of the message.
Look up the tree to PhotoViewController's hierarchy. It's probably not the root. I had this happen.
The error message is literal.

DismissViewControllerAnimated not working with navigation

In my application i have used the following code to implement after dismissing the view i have pushed to new view,When i tried to implement the view is not dismissing instead it overlapping.Here my code,
-(IBAction)selectExitingPicture
{
if([UIImagePickerController isSourceTypeAvailable:
UIImagePickerControllerSourceTypePhotoLibrary])
  {
UIImagePickerController *picker= [[UIImagePickerController alloc]init];
picker.delegate = self;
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
[self presentViewController:picker animated:YES completion:nil];
}
}
-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image
editingInfo:(NSDictionary *)editingInfo
{
[picker dismissViewControllerAnimated:YES completion:^{
cropingImageViewCon = [[CropingImageViewControl alloc]initWithNibName:#"CropingImageView" bundle:nil];
cropingImageViewCon.delegate = self;
cropingImageViewCon.originalImg = image;
[self.navigationController presentModalViewController:cropingImageViewCon animated:YES];
}];
}
Whats wrong with my code,Can any one please help out.
If you want to push into CropingImageViewControl then you are going wrong way,
Use
[self.navigationController pushViewController:yourViewCotrollerObject animated:YES];
instead of using presentModalViewController:

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