How To Use AVCaptureStillImageOutput To Take Picture

Question

I have a preview layer that is pulling from the camera and working as it should. I would like to be able to take a picture when I press a button. I have inited the AVCaptureStil

Answer 1

-(void)captureImage:(NSString *)string successCallback:(void (^)(id))successCallback errorCallback:(void (^)(NSString *))errorCallback{

    __block UIImage *image;
    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);
    [videoConnection setVideoOrientation:AVCaptureVideoOrientationPortrait];

    [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];
         image = [[UIImage alloc] initWithData:imageData];


         successCallback(image);
         //UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil);
     }];


    NSError *error;
    if (error) {
        errorCallback(@"error");
    }else{

    }
}