I already know how using UIImagePickerController but I'm actually using AVFoundation in my project.
Should I use ImagePickerController's delegate even though I'm using AVFoundation or is there another way to do it?
For the record, the more customizable the better since that is why I've chosen AVFoundation over UIImagePickerController such as, ability to change its layout, its layout's color, its frame, etc.
Apple has some useful documentation that might help you out.
My guess is that you just need the right keywords to look for.
If you want to support iOS 8 & older iOS versions, what you want to do is get access to some photo in the library as an AVAsset.
The first code listing in that documentation shows how to get the first video from the user's photo album. To get the first photo, simply replace the "[ALAssetsFilter allVideos]" bit with "[ALAssetsFilter allPhotos]".
If you only want to support iOS 9 and newer, there's a new Photos framework, and the assets are accessed as PHAssets.
Any image available to the Photos app can be accessed using ALAssetsLibrary class. Note that you will have your work cut out for you; you'll have to create the UI for picking images from the Photo Library from scratch.
Reference is available here
Ok so this is what you do if you absolutely need to customize UI elements of your camera but at the same time you don't feel like getting into AVAsset to bring up Photo Library.
Customize camera with AVFoundation and use UIImagePickerController for Photo Library.
In your custom camera view
- (instancetype)initWithFrame:(CGRect)frame{
self = [super initWithFrame:frame];
if (self) {
self.session = [[AVCaptureSession alloc] init];
[self.session setSessionPreset:AVCaptureSessionPresetPhoto];
AVCaptureDevice *inputDevice = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
NSError *error;
self.deviceInput = [AVCaptureDeviceInput deviceInputWithDevice:inputDevice error:&error];
if ([self.session canAddInput:self.deviceInput]) {
[self.session addInput:self.deviceInput];
}
AVCaptureVideoPreviewLayer *previewLayer = [[AVCaptureVideoPreviewLayer alloc] initWithSession:self.session];
[previewLayer setVideoGravity:AVLayerVideoGravityResizeAspectFill];
CALayer *rootLayer = [self layer];
[rootLayer setMasksToBounds:YES];
CGRect frame = CGRectMake(0, 0, self.frame.size.width, self.frame.size.width);
[previewLayer setFrame:frame];
[rootLayer insertSublayer:previewLayer atIndex:0];
self.stillImageOutput = [[AVCaptureStillImageOutput alloc] init];
NSDictionary *outputSettings = [[NSDictionary alloc] initWithObjectsAndKeys:AVVideoCodecJPEG, AVVideoCodecKey, nil];
[self.stillImageOutput setOutputSettings:outputSettings];
[self.session addOutput:self.stillImageOutput];
[self.session startRunning];
}
return self;
}
-(void)takePhoto:(UITapGestureRecognizer *)tap{
[UIView animateWithDuration:0.15
delay:0.0
options:UIViewAnimationOptionCurveEaseOut
animations:^{
self.containerView.frame = CGRectMake(-self.frame.size.width, self.containerView.frame.origin.y, self.containerView.frame.size.width, self.containerView.frame.size.height);
} completion:^(BOOL finished){
if (finished) {
}
}
];
AVCaptureConnection *videoConnection = nil;
for (AVCaptureConnection *connection in self.stillImageOutput.connections) {
for (AVCaptureInputPort *port in [connection inputPorts]) {
if ([[port mediaType] isEqual:AVMediaTypeVideo]) {
videoConnection = connection;
break;
}
}
}
[self.stillImageOutput captureStillImageAsynchronouslyFromConnection:videoConnection
completionHandler:^(CMSampleBufferRef imageDataSampleBuffer, NSError *error) {
if (imageDataSampleBuffer != NULL) {
NSData *imageData = [AVCaptureStillImageOutput jpegStillImageNSDataRepresentation:imageDataSampleBuffer];
UIImage *image = [UIImage imageWithData:imageData];
NSLog(@"1. newSize.width : %f, newSize.height : %f",image.size.width,image.size.height);
[self.session stopRunning];
[self shouldUploadImage:image];
}
}];
}
-(void)photoAlbumTapped{
NSLog(@"photo album button tapped");
[self.delegate callImagePickerDelegate:self];
}
In VC
-(void)callImagePickerDelegate:(CameraView *)sender{
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES;
picker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
[self presentViewController:picker animated:YES completion:NULL];
}