camera overlay .xib file not showing buttons - ios

Question

I am trying to create a simple camera app with an overlay view that shows two buttons and a gesture recognizer.
Currently I have an 'OverlayViewController' with a .xib file which contains a UIView with two buttons and a gesture recognizer.
In my CameraViewController in which I show the camera on viewDidLoad through the UIImagePicker, I try to assign this picker my overlay but so far im not getting any of the buttons in the overlay....
OverlayViewController.h
#interface OverlayViewController : UIViewController <UIImagePickerControllerDelegate, UINavigationControllerDelegate, UIGestureRecognizerDelegate>
- (IBAction)take_picture:(UIButton *)sender;
- (IBAction)choose_picture:(UIButton *)sender;
#end
OverlayViewController.m
-pretty much empty (do I need to initialize the UIButtons here ??)
CameraViewController.h
#interface ProfileViewController : UIViewController <UIImagePickerControllerDelegate, UINavigationControllerDelegate, UIGestureRecognizerDelegate>
#property (strong, nonatomic) UIImagePickerController *picker;
#property (strong, nonatomic) OverlayViewController *overlay;
CameraViewController.m
-(void)setupCamera
{
self.picker = [[UIImagePickerController alloc] init];
self.picker.sourceType = UIImagePickerControllerSourceTypeCamera;
self.picker.cameraCaptureMode = UIImagePickerControllerCameraCaptureModePhoto;
self.overlay = [[OverlayViewController alloc] initWithNibName:#"OverlayViewController" bundle:nil];
// _overlay.delegate = self;
// NSArray* nibViews= [[NSBundle mainBundle] loadNibNamed:#"OverlayViewController" owner:self.overlay options:nil];
// UIView* uiView= [nibViews objectAtIndex:0];
// uiView.opaque= NO;
// uiView.backgroundColor= [UIColor clearColor];
self.picker.cameraOverlayView = self.overlay.view;
self.picker.delegate = self.overlay;
self.picker.showsCameraControls = NO;
self.picker.navigationBarHidden = YES;
self.picker.toolbarHidden = YES;
self.picker.wantsFullScreenLayout = YES;
[self presentViewController:self.picker animated:NO completion:nil];
}
Im also wondering which controller should be the delegate for these invisible buttons...
thanks for the help in advance!

Answer 1

There is another alternative AVCaptureSession Using it you can do your things..
put this code in viewDidAppear
//----- SHOW LIVE CAMERA PREVIEW -----
AVCaptureSession *session = [[AVCaptureSession alloc] init];
session.sessionPreset = AVCaptureSessionPreset1920x1080;
CALayer *viewLayer = self.overlay.layer;
NSLog(#"viewLayer = %#", viewLayer);
AVCaptureVideoPreviewLayer *captureVideoPreviewLayer = [[AVCaptureVideoPreviewLayer alloc] initWithSession:session];
[[captureVideoPreviewLayer connection] setVideoOrientation:AVCaptureVideoOrientationLandscapeLeft];
captureVideoPreviewLayer.frame = self.overlay.bounds;
[self.overlay.layer addSublayer:captureVideoPreviewLayer];
AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
NSError *error = nil;
AVCaptureDeviceInput *input = [AVCaptureDeviceInput deviceInputWithDevice:device error:&error];
if (!input) {
// Handle the error appropriately.
NSLog(#"ERROR: trying to open camera: %#", error);
}
[session addInput:input];
[session startRunning];
and for capture image
-(UIImage *) captureNow
{
AVCaptureConnection *videoConnection = nil;
for (AVCaptureConnection *connection in stillImageOutput.connections)
{
for (AVCaptureInputPort *port in [connection inputPorts])
{
if ([[port mediaType] isEqual:AVMediaTypeVideo] )
{
videoConnection = connection;
break;
}
}
if (videoConnection) { break; }
}
NSLog(#"about to request a capture from: %#", stillImageOutput);
[stillImageOutput captureStillImageAsynchronouslyFromConnection:videoConnection
completionHandler: ^(CMSampleBufferRef imageSampleBuffer, NSError *error)
{
CFDictionaryRef exifAttachments = CMGetAttachment( imageSampleBuffer, kCGImagePropertyExifDictionary, NULL);
if (exifAttachments)
{
// Do something with the attachments.
NSLog(#"attachements: %#", exifAttachments);
}
else
NSLog(#"no attachments");
NSData *imageData = [AVCaptureStillImageOutput jpegStillImageNSDataRepresentation:imageSampleBuffer];
UIImage *image = [[UIImage alloc] initWithData:imageData];
return image;
}];
}
here is reference link