I have used an ImagePickerController as a View as:
camViewController* camera = [[camViewController alloc] init];
[camera setSourceType:UIImagePickerControllerSourceTypeCamera];
[self presentViewController:camera animated:YES completion:nil];
camera.showsCameraControls = NO;
So the view shows the user data from camera. And there is an opportunity to cover this view with an image, which may be taken from Photo Library or from Camera.
In this View I've created another ImagePickerController SourceTypeCamera, but when the image is taken and the camera dismisses, camViewController (the first one) shows just a black screen.
UPD: When the image is taken from Photo Library - everything is ok - the image becomes an overlay over the camViewController and the user can see both: the image (alpha 0.5) and the footage from camera.
This is the code:
- (IBAction)chooseImageAction:(id)sender {
choosePhoto = [[UIImagePickerController alloc] init];
[choosePhoto setSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
choosePhoto.delegate = self;
[self presentViewController:choosePhoto animated:YES completion:nil];
}
- (IBAction)getImageAction:(id)sender {
getPhoto = [[UIImagePickerController alloc] init];
[getPhoto setSourceType:UIImagePickerControllerSourceTypeCamera];
getPhoto.delegate = self;
[self presentViewController:getPhoto animated:NO completion:nil];
}
- (void) imagePickerControllerDidCancel:(UIImagePickerController *)choosePhoto {
[self dismissViewControllerAnimated:NO completion:nil];
}
- (void) imagePickerController:(UIImagePickerController *)choosePhoto didFinishPickingMediaWithInfo:(NSDictionary *)info {
self.shownImage.image = [info objectForKey:UIImagePickerControllerOriginalImage];
if (getPhoto) {
UIImageWriteToSavedPhotosAlbum(shownImage.image, self, nil, nil);
}
[self dismissViewControllerAnimated:NO completion:nil];
}
How to avoid getting the black screen when I take image with the camera?
Related
After picking the image from gallery or camera - needs to enable rotate, flip editing How can i acive that.Here my code :
-(void)photofromCamera
{
#try
{
NSLog(#"2");
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES;
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
[self presentViewController:picker animated:YES completion:nil];
}
#catch (NSException *exception)
{
[self showAlert:#"Camera is not available"];
}
}
-(void)photofromGallery
{
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES;
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
[self presentViewController:picker animated:YES completion:NULL];
}
So after the delegate method :
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
[self.imageDeletionButton setHidden:NO];
UIImage *chosenImage = [info valueForKey:UIImagePickerControllerEditedImage];
self.PostImageView.image = chosenImage;
[picker dismissViewControllerAnimated:YES completion:nil];
}
As if now, if i pick any image from gallery, camera - i needs to show the crop, flip, rotation.please help me out how can i achive that.
Thanks in advance !!!
You can use the swift based framework IGRPhotoTweaks for rotate, flip and crop the image.
You can check the https://github.com/IGRSoft/IGRPhotoTweaks for git and
https://cocoapods.org/pods/IGRPhotoTweaks for cocoapods.
In the framework cropAction() and changedAngel(value: radians) are the 2 methods that you need to try to achieve your requirement.
This application loads the device's camera in viewWillAppear method:
- (void)viewDidAppear:(BOOL)animated{
[super viewDidAppear:animated];
if (self.imageView.image == nil) {
UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];
imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera;
imagePickerController.modalPresentationStyle = UIModalPresentationCurrentContext;
imagePickerController.delegate = self;
[self presentViewController:imagePickerController animated:YES completion:nil];
}
else { }
}
Delegate methods are implemented:
- (void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
UIImage *image = [info objectForKey:#"UIImagePickerControllerOriginalImage"];
[self dismissViewControllerAnimated:YES completion:nil];
// Pass the image to email composer after dismissing the camera. Delay allowed for cameraVC to dismiss.
[self performSelector:#selector(composeEmail) withObject:image afterDelay:1.0];
}
- (void) imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
[[picker parentViewController] dismissViewControllerAnimated:YES completion:nil];
}
When a photo is taken and I choose the default "Use Photo" button I want to dismiss the camera ViewController and load the emailComposer View Controller, which uses this method:
- (void) composeEmail: (UIImage *)image {
NSString *bodyHeader = #"Here are you directions:";
NSString *mailBody = [NSString stringWithFormat:#"%#\n%#", bodyHeader, googleMapsURL];
MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init];
picker.mailComposeDelegate = self;
[picker setSubject:#"Google Maps Directions"];
[picker setMessageBody:mailBody isHTML:NO];
[picker setToRecipients:#[#"john.doe#gmail.com"]];
[picker setModalTransitionStyle:UIModalTransitionStyleCrossDissolve];
// Create NSData object as PNG image data from camera image
NSData *data = UIImagePNGRepresentation(image);
// Attach image data to the email
// 'DestinationImage.png' is file name that will be attached to the email
[picker addAttachmentData:data mimeType:#"image/png" fileName:#"DestinationImage"];
[self presentViewController:picker animated:YES completion:nil];
}
(I have left out some of the MessageUI details here but I have tested it and I know it is working)
The image taken should be passed to the emailComposer and attached as an email. When I build this on my device and tap the "Use Photo" button an error is thrown. The error message states "Attempt to present MFMailCompseViewController on ViewController whose view is not in the window hierarchy!" I am using only one ViewController and that VC contains one Image View.
Can anyone help me dismiss the camera and load the email composer?
Much appreciated!
First Dismiss the ImagePicker and then present ur mailcomposer will work then.U r dismissing the parent thta's y its not working [yourpicker dismissViewControllerAnimated:YES completion:nil];
- (void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
UIImage *image = [info objectForKey:#"UIImagePickerControllerOriginalImage"];
[yourpicker dismissViewControllerAnimated:YES completion:nil];
// Pass the image to email composer after dismissing the camera. Delay allowed for cameraVC to dismiss.
[self performSelector:#selector(composeEmail) withObject:image afterDelay:1.0];
}
To present view controller, use following :
[[[[[UIApplication sharedApplication] delegate] window] rootViewController] presentViewController: picker
animated:YES
completion:nil];
You can also look into this stackoverflow's question for further understanding
I am taking picture from Camera.They Shown me Snapshotting a view that has not been rendered results in an empty snapshot. Ensure your view has been rendered at least once before snapshotting or snapshot after screen updates.
-(IBAction)choosePicture:(id)sender
{
UIImagePickerController *imagePicker=[[UIImagePickerController alloc]init];
imagePicker.sourceType=UIImagePickerControllerSourceTypePhotoLibrary;
imagePicker.delegate=self;
[self presentViewController:imagePicker animated:YES completion:nil];
}
-(IBAction)takePicture:(id)sender
{
UIImagePickerController *imagePicker=[[UIImagePickerController alloc]init];
imagePicker.sourceType=UIImagePickerControllerSourceTypeCamera;
imagePicker.delegate = self;
[self presentViewController:imagePicker animated:YES completion:nil];
}
-(void)imagePickerController:(UIImagePickerController*)picker didFinishPickingMediaWithInfo:(NSDictionary*)info
{
// UIImage *pickedImage=[info objectForKey:UIImagePickerControllerOriginalImage];
image.image = [info objectForKey:#"UIImagePickerControllerOriginalImage"];
picker.modalPresentationStyle = UIModalPresentationFullScreen;
[picker dismissViewControllerAnimated:YES completion:nil];
}
Tried your code in an empty app, had no messages, everything is fine.
Besides downloaded example from apple https://developer.apple.com/library/ios/samplecode/PhotoPicker/Introduction/Intro.html
It has the same problem, but everything works fine. May be it's just a bug. (If their own code has the same message)
If you have this message and something doesn't work correctly, try similar questions. for example: UIImagePickerController error: Snapshotting a view that has not been rendered results in an empty snapshot in iOS 7
This worked for me:
-(IBAction)takePicture:(id)sender
{
UIImagePickerController *imagePickController=[[UIImagePickerController alloc]init];
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
{
imagePickController.sourceType = UIImagePickerControllerSourceTypeCamera;
}
else
{
imagePickController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
}
imagePickController.delegate = self;
imagePickController.allowsEditing = TRUE;
[self presentViewController:imagePickController animated:YES completion:nil];
}
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
[self dismissViewControllerAnimated:YES completion:nil];
<your image> = [info objectForKey:UIImagePickerControllerEditedImage];
}
guys.
I'm trying to capture multiple images from the camera in iOS7, when I capture the first image and click in in "Use Photo", then it's store the image in a array in didFinishPickingMediaWithInfo. When the camera appear again, I see the last image in background but I can't see the camera movement. I know the camera is enabled, because it's searching faces. The code is below:
- (IBAction)openTour:(id)sender
{
_counter=0;
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
{
UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
imagePicker.showsCameraControls = YES;
imagePicker.delegate = self;
[self presentViewController:imagePicker animated:YES completion:nil];
imagePicker = nil;
}
}
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo: (NSDictionary *)info
{
UIImage *image= [info objectForKey:UIImagePickerControllerEditedImage];
[ _imageArray addObject:image ];
_counter++;
if ( _counter<5 )
{
[self dismissViewControllerAnimated:NO completion:nil];
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
{
UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
imagePicker.showsCameraControls = YES;
imagePicker.delegate = self;
[self presentViewController:imagePicker animated:NO completion:nil];
imagePicker = nil;
}
}
else
{
[self dismissViewControllerAnimated:YES completion:nil];
}
}
Does anyone know what is happening?
Thanks in advance!
Set showsCameraControls = NO;
Use cameraOverlayView property.
In the action of your camera button call takePicture method.
Keep adding UIImage objects received by the method
-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
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];