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?
Related
I have a Tab bar controller, when I tap the third tab bar button I present a UIViewcontroller. In the viewWillAppear of this vc I'm presenting a UIImagepickerController that works fine. The problem is I can't display it on the screen immediately when I open the view. First the vc shows up and after 0.4-0.5 sec the image picker. So I would like to present the image picker first and present the vc after the user took an image. I tried to call the picker from viewDidLoad and viewWillAppear too, but nothing changed.
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
if (imagePickerWasPresented == NO)
{
imagePickerWasPresented = YES;
self.imagePicker = [[UIImagePickerController alloc] init];
self.imagePicker.delegate = self;
self.imagePicker.allowsEditing = YES;
self.imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
self.imagePicker.mediaTypes = [NSArray arrayWithObject:(NSString *)kUTTypeImage];
[self presentViewController:self.imagePicker animated:NO completion:nil];
}
}
Am I calling it in a wrong place?
I had the same problem - instead of calling the VC and then the UIImagePicker, call the UIImagePicker directly.
When you are done taking a picture/video:
- (void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {}
you will go to this standard delegate method, call the VC from here. This way you will immediately go to the ImagePicker and only have a transition would you choose to do something with the taken content afterwards which is less frustrating/ugly.
No, your calling it in an okay place, that's just how iOS does it; if you present multiple modals on top of each other, one gets presented after the other, including the animation. A solution that would work for your problem is to present a UINavigationController instead of your UIViewController. Set the navigation controller up to have ViewController as the root viewcontroller, but also push your imagepickercontroller onto the stack. Present this navigationcontroller and it should go right to your imagepickercontroller. Otherwise, try presenting both uiviewcontroller and imagepickercontroller with animation set to NO and see if that works.
try this to see how close that gets you then adapt to your needs. when i gave it a quick test it seemed to do what you were asking.
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] ;
UIViewController * vc = [[UIViewController alloc] init];
vc.view.backgroundColor = [UIColor whiteColor];
UINavigationController * navigationController = [[UINavigationController alloc] init];
[navigationController pushViewController:vc animated:NO];
UITabBarController * tabBarController = [[UITabBarController alloc] init];
NSArray* controllers = [NSArray arrayWithObjects:navigationController, nil];
tabBarController.viewControllers = controllers;
tabBarController.delegate = self;
UIImagePickerController *imagePicker =
[[UIImagePickerController alloc] init];
imagePicker.delegate = self;
imagePicker.sourceType =
UIImagePickerControllerSourceTypePhotoLibrary;
imagePicker.mediaTypes = [NSArray arrayWithObjects:
(NSString *) kUTTypeImage,
nil];
imagePicker.allowsEditing = NO;
self.window.rootViewController = tabBarController;
[self.window makeKeyAndVisible];
[vc presentViewController:imagePicker animated:NO completion:nil];
return YES;
}
UIImage as a PopOver
Gallery mode:
BOOL hasGallery = [UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary];
UIImagePickerController* picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.sourceType = hasGalleryt ? UIImagePickerControllerSourceTypePhotoLibrary : UIImagePickerControllerSourceTypePhotoLibrary;
if (self.popoverController != nil)
{
[self.popoverController dismissPopoverAnimated:YES];
self.popoverController=nil;
}
self.popoverController = [[UIPopoverController alloc] initWithContentViewController:picker];
CGRect popoverRect = [self.view convertRect:[self.imageView frame]
fromView:[self.imageView superview]];
popoverRect.size.width = MIN(popoverRect.size.width, 300) ;
popoverRect.origin.x = popoverRect.origin.x;
[self.popoverController
presentPopoverFromRect:popoverRect
inView:self.view
permittedArrowDirections:UIPopoverArrowDirectionAny
animated:YES];
Camera mode:
BOOL hasCamera = [UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera];
UIImagePickerController* picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.sourceType = hasCamera ? UIImagePickerControllerSourceTypeCamera : UIImagePickerControllerSourceTypePhotoLibrary;
if (self.popoverController != nil)
{
[self.popoverController dismissPopoverAnimated:YES];
self.popoverController = nil;
}
self.popoverController = [[UIPopoverController alloc] initWithContentViewController:picker];
CGRect popoverRect = [self.view convertRect:[self.imageView frame]
fromView:[self.imageView superview]];
popoverRect.size.width = MIN(popoverRect.size.width, 300) ;
popoverRect.origin.x = popoverRect.origin.x;
[self.popoverController
presentPopoverFromRect:popoverRect
inView:self.view
permittedArrowDirections:UIPopoverArrowDirectionAny
animated:YES];
Remember to give to the .h File #interface the delegates, like this:
#interface the UIViewController: UIViewController <UIPopoverControllerDelegate, UIImagePickerControllerDelegate>
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??????
}];
}
Is there a way to add a UIImagePickerController as the subview of a UIView, instead of presenting it modally?
UIImagePickerController * picker = [[UIImagePickerController alloc] init];
picker.delegate=self;
[picker setSourceType:(UIImagePickerControllerSourceTypeCamera)];
[self presentViewController:picker animated:YES completion:Nil];
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];
}
I have two views. Very simple set up just to play around with the camera roll.
One view will bring up the camera roll using:
[self presentViewController:self.imagePicker animated:NO completion:nil];
which is triggered by a UIButton. It brings up the camera, everything's fine.
After taking a picture, I am calling the following to dismiss the controller:
[self dismissViewControllerAnimated:NO completion:nil];
Again, everything is working.
But the view that brings up the imagePicker Controller no longer receives touch (the UIButton will no longer brings up the camera again) after the Modal View is dismissed.
It will only start to receive touches again when I switch to another view and come back.
I have been searching for a solution to this problem but have not been successful in finding anything. Thanks in advance.
EDIT (Adding code):
In CameraController.m
This is where brings up the Camera Roll
(Subclass of UIViewController conforming to
<UIImagePickerControllerDelegate, UINavigationControllerDelegate>)
//UIButton that brings up the imagePicker
- (IBAction)useCamera
{
[self prepareImagePicker];
[self presentViewController:self.imagePicker animated:NO completion:nil];
}
//Initializing ImagePicker
- (void)prepareImagePicker
{
if ([UIImagePickerController isSourceTypeAvailable:
UIImagePickerControllerSourceTypeCamera])
{
self.imagePicker = [[UIImagePickerController alloc] init];
self.imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
self.imagePicker.mediaTypes = [NSArray arrayWithObjects:(NSString *) kUTTypeImage, nil];
self.imagePicker.delegate = self;
OverlayCameraView *cameraOverlay = [[OverlayCameraView alloc] initWithFrame:(CGRect){{0, 0}, 320, 480} andTheCameraController:self];
self.imagePicker.cameraOverlayView = cameraOverlay;
}
}
//Delegate Method when a picture is taken
-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
self.imagePicker.delegate = nil;
[picker dismissViewControllerAnimated:NO completion:nil];
self.imagePicker = nil;
self.imageView.image = [info objectForKey:UIImagePickerControllerOriginalImage];
}
In OverlayCameraView.m
//Camera Overlay Class (Subclass of UIView)
- (id)initWithFrame:(CGRect)frame andTheCameraController:(CameraController*)cameraController
{
if ((self = [super initWithFrame:frame]))
{
self.camera = cameraController;
//.…2 UIButtons set up
}
return self;
}
//Overlay Cancel Button
- (void) cancel
{
[self.camera dismissViewControllerAnimated:NO completion:nil];
}
//Overlay Take Picture Button
- (void) takeAPicture
{
[self.camera.imagePicker takePicture];
}
You should be calling dismissViewControllerAnimated on the picker not self via the UIImagePickerControllerDelegate methods.
[picker dismissViewControllerAnimated:NO completion:nil];
or if you are keeping a reference to it:
[self.imagePicker dismissViewControllerAnimated:NO completion:nil];
EDIT:
Based on the revised code, I believe
self.imagePicker.cameraOverlayView = cameraOverlay;
should be:
self.imagePicker.cameraOverlayView = cameraOverlay.view;
Also this will cause a +2 reference count and will leak if you are not using ARC:
self.imagePicker = [[UIImagePickerController alloc] init];
It should be for proper reference counting:
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
self.imagePicker = picker;
[picker release];