How to upload this photo? - ios

Question

I want to use both of the objective c methods listed below in my application. The first method uploads a UIImagePicker photograph to a local server.
// I would still like to use this method structure but with the `AVCam` classes.
-(void)uploadPhoto {
//upload the image and the title to the web service
[[API sharedInstance] commandWithParams:[NSMutableDictionary dictionaryWithObjectsAndKeys:#"upload", #"command", UIImageJPEGRepresentation(photo.image,70), #"file", fldTitle.text, #"title", nil] onCompletion:^(NSDictionary *json) {
//completion
if (![json objectForKey:#"error"]) {
//success
[[[UIAlertView alloc]initWithTitle:#"Success!" message:#"Your photo is uploaded" delegate:nil cancelButtonTitle:#"Yay!" otherButtonTitles: nil] show];
} else {
//error, check for expired session and if so - authorize the user
NSString* errorMsg = [json objectForKey:#"error"];
[UIAlertView error:errorMsg];
if ([#"Authorization required" compare:errorMsg]==NSOrderedSame) {
[self performSegueWithIdentifier:#"ShowLogin" sender:nil];
}
}
}];
}
I want to add a second method : The second method performs an IBAction picture snap using AVCam but I changed it to void to launch the the view loads using [self snapStillImage].
EDIT
- (IBAction)snapStillImage:(id)sender
{
dispatch_async([self sessionQueue], ^{
// Update the orientation on the still image output video connection before capturing.
[[[self stillImageOutput] connectionWithMediaType:AVMediaTypeVideo] setVideoOrientation:[[(AVCaptureVideoPreviewLayer *)[[self previewView] layer] connection] videoOrientation]];
// Flash set to Auto for Still Capture
[ViewController5 setFlashMode:AVCaptureFlashModeAuto forDevice:[[self videoDeviceInput] device]];
// Capture a still image.
[[self stillImageOutput] captureStillImageAsynchronouslyFromConnection:[[self stillImageOutput] connectionWithMediaType:AVMediaTypeVideo] completionHandler:^(CMSampleBufferRef imageDataSampleBuffer, NSError *error) {
if (imageDataSampleBuffer)
{
NSData *imageData = [AVCaptureStillImageOutput jpegStillImageNSDataRepresentation:imageDataSampleBuffer];
UIImage *image = [[UIImage alloc] initWithData:imageData];
[[[ALAssetsLibrary alloc] init] writeImageToSavedPhotosAlbum:[image CGImage] orientation:(ALAssetOrientation)[image imageOrientation] completionBlock:nil];
//
photo = [[UIImage alloc] initWithData:imageData];
}
}];
});
}
Can someone please set photo via AVCam? At the very least humor me and start a dialogue about AVFoundation and its appropriate classes for tackling an issue like this.
Additional info: The avcam method is simply an excerpt from this https://developer.apple.com/library/ios/samplecode/AVCam/Introduction/Intro.html
#Aksh1t I want to set an UIImage named image with the original contents of the AVFoundation snap. Not UIImagePicker. Here is the method that sets the outlet using UIImagePicker.
#pragma mark - Image picker delegate methods
-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
// Resize the image from the camera
UIImage *scaledImage = [image resizedImageWithContentMode:UIViewContentModeScaleAspectFill bounds:CGSizeMake(photo.frame.size.width, photo.frame.size.height) interpolationQuality:kCGInterpolationHigh];
// Crop the image to a square (yikes, fancy!)
UIImage *croppedImage = [scaledImage croppedImage:CGRectMake((scaledImage.size.width -photo.frame.size.width)/2, (scaledImage.size.height -photo.frame.size.height)/2, photo.frame.size.width, photo.frame.size.height)];
// Show the photo on the screen
photo.image = croppedImage;
[picker dismissModalViewControllerAnimated:NO];
}
After that I simply want to upload it using the first method I posted. Sorry for being unclear. I basically want to do this in my new app (i was unclear about what app).
Take a photo using AVCam
Set that photo to an UIImageView IBOutlet named photo
Upload photo (the original AVCam photo) to the server
The basic framework is above and I will answer any questions

Answer 1

The following line of code in your snapStillImage method takes a photo into the imageData variable.
NSData *imageData = [AVCaptureStillImageOutput jpegStillImageNSDataRepresentation:imageDataSampleBuffer];
Next, you are creating one UIImage object from this data like this
UIImage *image = [[UIImage alloc] initWithData:imageData];
Instead of the above code, make a global variable UIImage *photo;, and initialize that with the imageData when your snapStillImage takes the photo like this
photo = [[UIImage alloc] initWithData:imageData];
Since photo is a global variable, you will then be able to use that in your uploadPhoto method and send it to your server.
Hope this helps, and if you have any question, leave it in the comments.
Edit:
Since you already have a IBOutlet UIImageView *photo; in your file, you don't even need a global variable to store the UIImage. You can just replace the following line in your snapStillImage method:
UIImage *image = [[UIImage alloc] initWithData:imageData];
with this line
photo.image = [[UIImage alloc] initWithData:imageData];