Steps to Capture Image Using Camera/Photo Gallery (iOS)

In this tutorial I will describe how to capture image, using iPhone/iPad Device Camera or Photo Gallery, step by step. Using this tutorial you can implement image capturing functionality within 1 hour.

Step-1: In your user interface create an UIImageView and two UIButton and place them on interface as per your requirement. Image view to show captured image, one button to open camera and second button to open image gallery.

Step-2: Confirm to required protocols in your controller .h file


@interface YourViewController : UIViewController <UIImagePickerControllerDelegate, UINavigationControllerDelegate>
- (IBAction)takePhoto:(UIButton *)sender {

Step-3: Declare an IBOutlet for image in .m file.

@interface YourViewController : UIViewController

@property (strong, nonatomic) IBOutlet UIImageView *imageView;

@end

Step-4: Define an IBAction takePhoto method as below:

UIImagePickerController *picker = [[UIImagePickerController alloc] init];

picker.delegate = self;

picker.allowsEditing = YES;

picker.sourceType = UIImagePickerControllerSourceTypeCamera;

[self presentViewController:picker animated:YES completion:NULL];

}

Step-5: Define selectPhoto method as below:

- (IBAction)selectPhoto:(UIButton *)sender {

UIImagePickerController *picker = [[UIImagePickerController alloc] init];

picker.delegate = self;

picker.allowsEditing = YES;

picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

[self presentViewController:picker animated:YES completion:NULL];

}

Step-6: In interface builder connect UIImageView with imageView property. Connect buttons 'Touch up inside' action with takePhoto and selectPhoto methods.

Step-7: To handle UIImagePickerControllerDelegate, implement below two methods.

/*This method will be called when user capture/select an image*/

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {

UIImage *chosenImage = info[UIImagePickerControllerEditedImage];

self.imageView.image = chosenImage;

[picker dismissViewControllerAnimated:YES completion:NULL];

}

/*This method will be called when user perform cancel operation*/

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {

[picker dismissViewControllerAnimated:YES completion:NULL];

}

Enjoy learning and please let me know your feedback.