I am taking a photo and processing it using captureOutput:didFinishProcessingPhoto
.
I need to convert the photo (AVCapturePhoto) into a string so I can send it to the server in a JSON. I need to store it in the userDefaults first, and on the last screen I need to retrieve it and add it to a JSON/Dictionary.
I'm working on a project I didn't start. I would normally have set this up completely different. Either way this is my problem now.
I'm trying this:
- (void)captureOutput:(AVCapturePhotoOutput *)output didFinishProcessingPhoto:(AVCapturePhoto *)photo error:(NSError *)error {
if (error != nil){
NSLog(@"%s: %@", "Error in capture process", error.debugDescription);
}
NSData *imageData = [photo fileDataRepresentation];
if (imageData == nil){
NSLog(@"%s", "unable to create image data");
}
NSData *photoData = UIImageJPEGRepresentation([[UIImage alloc] initWithData:imageData], 0.0);
NSString *str = [[NSString alloc] initWithData:photoData encoding:NSUTF16StringEncoding];
// UIImage *image = [[UIImage alloc] initWithData:imageData];
// NSData *imageDataObject = UIImageJPEGRepresentation(image, 0.0);
// NSString *photoString = [[NSString alloc] initWithData:imageDataObject encoding:NSUTF8StringEncoding];
// UIImage *image = [[UIImage alloc] initWithData:imageData];
// NSData *imageDataObject = UIImageJPEGRepresentation(image, 0.0);
// NSString *photoString = [[NSString alloc] initWithData:imageDataObject encoding:NSUTF8StringEncoding];
NSUserDefaults *myDefaults = [NSUserDefaults standardUserDefaults];
[myDefaults setObject:str forKey:@"photo"];
}
commented out code is just failed attempts to do this.
In swift I implemented this by creating a codable object as a singleton (never stored it in defaults) and called this function on the data before sending it:
form.photo = UIImage(data: imageData)?.jpegData(compressionQuality: 0.0)
I'm having no such luck with objective c. I don't have a jpegData function....
Every time I try to convert the data the conversion fails and I get null back. Why?
Thanks to @Larme for pointing me in the right direction. This is what I came up with: