UIImagePicker Example

CreateImageViewController.h

#import <UIKit/UIKit.h>

@interface CreateImageViewController : UIViewController<UIImagePickerControllerDelegate, UINavigationControllerDelegate, UIActionSheetDelegate>

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

@end

CreateImageViewController.m

@implementation CreateImageViewController
  @synthesize imageView;
  
  -(void) viewDidAppear:(BOOL)animated{
    [super viewDidAppear:animated];
    
    if ([UIImagePickerController isSourceTypeAvailable: UIImagePickerControllerSourceTypeCamera]){
        UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"" delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil otherButtonTitles:@"Camera", @"Photo Library", nil];
        actionSheet.tag = 0;
        [actionSheet showInView:self.view];
    }else {
      UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
      imagePicker.delegate = self;
      imagePicker.allowsEditing = true;
      [imagePicker setSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
      [self presentViewController:imagePicker animated:true completion:nil];
    }
  }
  
  - (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
  
        switch (buttonIndex) {
            case 0:{
                UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
                imagePicker.delegate = self;
                imagePicker.allowsEditing = true;
                [imagePicker setSourceType:UIImagePickerControllerSourceTypeCamera];
                [self presentViewController:imagePicker animated:true completion:nil];
            }
                
                break;
            case 1: {
                UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
                imagePicker.delegate = self;
                imagePicker.allowsEditing = true;
                
                //Use photo library instead of camera roll so people can pick photos from other albums
                [imagePicker setSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
                [self presentViewController:imagePicker animated:true completion:nil];
            }
                break;
            default:
                break;
        }
    }
  }
  
  -(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
      
      UIImage *selectedImage = [info objectForKey:UIImagePickerControllerEditedImage];
      UIImage *originalImage = [info objectForKey:UIImagePickerControllerOriginalImage];
      CGRect cropRect = [[info objectForKey:@"UIImagePickerControllerCropRect"]CGRectValue];
      if(!selectedImage) selectedImage = originalImage;
      
      if ([picker sourceType] == UIImagePickerControllerSourceTypeCamera) {
          // Do something with an image from the camera
          UIImageWriteToSavedPhotosAlbum(originalImage, nil, nil, nil);
      }
      
      [self.imageView setContentMode:UIViewContentModeScaleAspectFit];
      self.imageView.image = [selectedImage resizedImageByMagick: @"612x612"];
      [picker dismissViewControllerAnimated:YES completion:NULL];
  }
@end