Often it is required to integrate the iPhone's camera in the app to take pictures and photos to be used by the app. This is made possible by UIImagePickerController.

The UIImagePickerController gives the programmer the capability to integrate the phone's camera to the app's interface and use it to take photos and pics. Using the delegate methods of the ImagePickerController makes the job of implementing and using it a lot easier.

The required code to perform the function is as follows.

The first step is to integrate the phone's camera into the app's user interface.

- (IBAction) useCamera: (id)sender
{
    if ([UIImagePickerController isSourceTypeAvailable:
         UIImagePickerControllerSourceTypeCamera])
    {
        UIImagePickerController *imagePicker =
        [[UIImagePickerController alloc] init];
        imagePicker.delegate = self;
        imagePicker.sourceType =
        UIImagePickerControllerSourceTypeCamera;
        imagePicker.mediaTypes = [NSArray arrayWithObjects:
                                  (NSString *) kUTTypeImage,
                                  nil];
        imagePicker.allowsEditing = NO;
        [self presentModalViewController:imagePicker
                                animated:YES completion:nil];
        newMedia = YES;
    }
}


#Pragma mark ImagePickerController delegates

-(void)imagePickerController:(UIImagePickerController *)picker
didFinishPickingMediaWithInfo:(NSDictionary *)info
{
   NSString *mediaType = [info
           UIImagePickerControllerMediaType];
    [self dismissViewControllerAnimated:YES completion:nil];
    if ([mediaType isEqualToString:(NSString *)kUTTypeImage]) {
        UIImage *image = [info
            objectForKey:UIImagePickerControllerOriginalImage];

        imageView.image = image;
        if (newMedia)
            UIImageWriteToSavedPhotosAlbum(image,
               self,  
               @selector(image:finishedSavingWithError:contextInfo:),
               nil);
    }
    else if ([mediaType isEqualToString:(NSString *)kUTTypeMovie])
    {
                // Code here to support video if enabled
        }
}
-(void)image:(UIImage *)image
finishedSavingWithError:(NSError *)error contextInfo:(void *)contextInfo
{
    if (error) 
    {
        UIAlertView *alert = [[UIAlertView alloc]initWithTitle: @"Save failed"
           message: @"Failed to save image"
           delegate: nil
           cancelButtonTitle:@"OK"
           otherButtonTitles:nil];
        [alert show];

    }
}

PS. Don't forget to include the UIImagePickerControllerDelegate in the .h file of your ViewController.