Camera View Controller

This is a view controller class with different methods for an easy implementation of AVFoundation.

In order to use it you just need to inherit this class from your view controller, include the AVFoundation framework and add an UIView that uses the included LFMCameraView.

I'm working on a Swift version of this class, it is availbale here but I'm just starting with it.

Setting the class

To start using the class you need to set your view as a Camera view with the setCameraView: method:

[self setCameraView:yourView];

If you want to implement a focus tap gesture just call the method focusAndExposeTap like this:

UIGestureRecognizer *gestureRecognizer = (UIGestureRecognizer *) sender;
[self focusAndExposeTap:gestureRecognizer];

Camera methods

If you want to change the camera just call the changeCamera method.

[self changeCamera];

By default the back camera is activated, if you want to change this just call the setFrontCameraAsDefault in your view did load after [super viewDidLoad]:

[super viewDidLoad];
[self setFrontCameraAsDefault];

The flash is in automatic mode by default, you can change this by calling the method setFlashConfiguration:, it would take a FlashConfiguration enum value that has three options:

• LFMFlashConfigurationAutomatic - Uses the flash if needed
• LFMFlashConfigurationAlways - Uses the flash for every photo taken
• LFMFlashConfigurationDeactivated -The flash would never be activated

[self setFlashConfiguration:LFMFlashConfigurationAlways];

Also, if you want to know what configuration you've activated you just need to call the cameraFlashConfiguration method, that will return the activated enum value.

FlashConfiguration currentFlashConfiguration = [self cameraFlashConfiguration];

It's important to know if user has granted you permission or if camera is available at all (maybe the device doesn't have a camera). To do this you can call the isCameraAvailable that will return a BOOL value.

[self isCameraAvailable];

Photo methods

The photo methods let you take pictures easily and save them in the gallery if the user grants you permission.

In order to use them you have two methods.

The takeStillPictureWithSuccessBlock lets you take a picture and use it in your app, this would not save the picture in the users phone, so you can do whatever you want with it.

[self takeStillPictureWithSuccessBlock:^(UIImage *cameraImage) {
      //Do what you want with the image
    } forFailure:^(NSError *error) {
      //Do something with the error
    }];

In case you want to save the picture you've two options, you can call saveImage:successBlock:forFailure: and send the user image to the method:

[self saveImage:userImage successBlock:^{
      //Let the user know his image was saved
    } forFailure:^(NSError *error) {
      //Do something with the error
    }];

Or you can call takeStillPictureWithSuccessBlock:forFailure: and save the image once it's taken:

[self takeStillPictureSavingInImagesWithSuccessBlock:^(UIImage *cameraImage) {
      //Do something with the saved image
    } forFailure:^(NSError *error) {
      //Do something with the erro
    }];

Video methods

Video is a little different from picture. When you start recording video it's recomended to hide all the other buttons to take pictures or change camera, for this you can use the method isCameraRecording, it returns a boolean value.

[self isCameraRecording];

If you want to start or stop a recording session you can call the toggleMovieRecording, this method will start or end (depending on the status of recording) a video recording. When the recording is stopped the file is saved in the user phone.

[self toggleMovieRecording];

What's missing?

The idea is to implement a way to record a video without saving it into the user phone (just like the picture works). Also all the session methods are not implemented.