I want to capture a photo in iOS without any user interaction by using the front camera. Can any one show me how to do that?
I used the takePicture function in UIImagePickerController class but it didn't work because the delegate method (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info never get called:
-(void)takePicture:(id)sender
{
UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
//Use camera if device has one otherwise use photo library
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
{
[imagePicker setSourceType:UIImagePickerControllerSourceTypeCamera];
}
else
{
[imagePicker setSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
}
[imagePicker setDelegate:self];
//Show image picker
[imagePicker takePicture];
}
Can anyone show me the correct way to do this?
You need to add the following code
//Getting image from front camera
imagePicker.cameraDevice = UIImagePickerControllerCameraDeviceFront;
[self imagePicker animated:YES completion:nil];
Related
I have a problem where the delegate of UIImagePickerController not being called when presented with sourceType = UIImagePickerControllerSourceTypePhotoLibrary.
Oddly enough, it works perfectly fine in camera mode.
Interface declaration:
#interface ChatVC : UIViewController <UIActionSheetDelegate, UIImagePickerControllerDelegate, UINavigationControllerDelegate>
And in implementation:
- (void)takePhotoAction {
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
UIImagePickerController* imgPickerController = [[UIImagePickerController alloc] init];
imgPickerController.sourceType = UIImagePickerControllerSourceTypeCamera;
imgPickerController.cameraCaptureMode = UIImagePickerControllerCameraCaptureModePhoto;
imgPickerController.allowsEditing = YES;
imgPickerController.delegate = self;
[self presentViewController:imgPickerController animated:YES completion:nil];
}
}
- (void)choosePhotoFromLibraryAction {
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {
UIImagePickerController* imgPickerController = [[UIImagePickerController alloc] init];
imgPickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
imgPickerController.allowsEditing = YES;
imgPickerController.delegate = self;
[self presentViewController:imgPickerController animated:YES completion:nil];
}
}
And here's the delegate method implementation in the same view controller:
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary<NSString *,id> *)editingInfo {
NSLog(#"Image Picker Controller Picked Image - Deprecated");
[picker dismissViewControllerAnimated:YES completion:nil];
}
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
NSLog(#"Image Picker Controller Picked Image");
[picker dismissViewControllerAnimated:YES completion:nil];
}
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
NSLog(#"Image Picker Controller Cancelled");
[picker dismissViewControllerAnimated:YES completion:nil];
}
When opened in camera mode, everything works just fine, and I can see the appropriate delegate methods being called.
But when opened in photo library mode and I choose a photo, nothing happens and no delegate method is called. However, I can see -imagePickerControllerDidCancel: delegate method being called when I tap on Cancel button.
I even suspected memory warning somehow invalidates the delegate, but it was not the case here.
Please someone help me figure this out.
Thanks in advance!
Ive been trying to set up a small iOS method that takes a picture automatically when user opens the app. After much research i finally found this iOS taking photo programmatically and after a little more i found this from apple https://developer.apple.com/library/ios/samplecode/AVCam/Introduction/Intro.html can someone help me get started in setting up a method for captureStillImageAsynchronouslyFromConnection:completionHandler:
i don't want any interaction from said user. thanks
Even though you seem to want to do the call asynchronously and using AVFoundation, I still recommend simply using a UIImagePickerController in this case, ex:
- (void)viewDidLoad {
[super viewDidLoad];
// If the device has a camera...
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
// Create an image picker
UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];
imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera;
imagePickerController.cameraDevice = UIImagePickerControllerCameraDeviceFront;
imagePickerController.showsCameraControls = NO;
imagePickerController.delegate = self;
[self presentViewController:imagePickerController animated:YES completion:^{
// And take the picture after a short delay
// to give the view and image picker time to get
// ready
[self performSelector:#selector(takepic:) withObject:imagePickerController afterDelay:2];
}];
}
}
// Automatically take the picture using the
// image picker passed in as a parameter
- (void)takepic:(UIImagePickerController*)imagePickerController {
[imagePickerController takePicture];
}
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
// ... Do whatever with the image ...
[picker dismissViewControllerAnimated:YES completion:nil];
}
I am using the default UIImagePickerController with allowsEditing set to YES for taking photo. When the user moves and scales the photo, the OS asks for access to 'Photos'.
The app crashes if the user denies access.
- (void)openCamera
{
UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];
imagePickerController.editing = YES;
imagePickerController.allowsEditing = YES;
imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera;
imagePickerController.delegate = self;
[self presentViewController:imagePickerController animated:YES completion:nil];
}
And UIImagePickerControllerDelegate method goes like
- (void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
UIImage *image = info[UIImagePickerControllerEditedImage];
if (!image) {
image = info[UIImagePickerControllerOriginalImage];
}
self.profileImage = image;
[picker dismissViewControllerAnimated:YES completion:nil];
}
Crash message:
*** This application is not allowed to access Photo data.
I'm wondering why it should ask for access to Photos in the first place.
Any thoughts?
Use Assets Framework to test if your app is allowed to access photo data.
ALAuthorizationStatus status = [ALAssetsLibrary authorizationStatus];
if(status==ALAuthorizationStatusAuthorized) {
..your code...
}
How do I take Picture without User Interaction or without presenting ImagePickerController
UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
{
[imagePickerController setSourceType:UIImagePickerControllerSourceTypeCamera];
}
// image picker needs a delegate,
[imagePickerController setDelegate:self];
// Place image picker on the screen
[self presentModalViewController:imagePickerController animated:YES];
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
[picker dismissModalViewControllerAnimated:YES];
_myImageView.image = [info objectForKey:#"UIImagePickerControllerOriginalImage"];
}
I know this way I can take picture but automatically How I do accomplish?
You can use the takePicture method on UIImagePickerController to take a picture programmaticly.
But I suggest to use AVFoundation to create you onw image capture.
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