iOS UIImagePickerController: Any way of getting the date of the chosen Picture?
Within my application I am using an UIImagePickerController which calls
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
on success. The thing is, i need the date at which the image was taken. If the user shot a new picture i can take the current date of course, but what can I do in case the user chose a picture from his came开发者_StackOverflow社区ra roll or another saved picture?
You can use this code for photos and videos fetched from albums. info is second parameter in the mentioned delegate method.
NSURL *mediaUrl = info[UIImagePickerControllerReferenceURL];
ALAssetsLibrary *assetsLibrary = [[ALAssetsLibrary alloc] init];
[assetsLibrary assetForURL:mediaUrl resultBlock:^(ALAsset *asset) {
NSDate *date = [asset valueForProperty:ALAssetPropertyDate];
// ...
} failureBlock:nil];
As well, to make it work you need to include to project AssetsLibrary framework.
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
NSDictionary *metadataDictionary = (NSDictionary *)[info valueForKey:UIImagePickerControllerMediaMetadata];
// do something with the metadata
NSLog(@"meta : %@ \n\n",metadataDictionary);
}
then
u have to get the "DateTime" key's value from that
iOS 11+, Swift 4+
import Photos
extension ViewController : UIImagePickerControllerDelegate, UINavigationControllerDelegate {
public func imagePickerController(_ picker: UIImagePickerController,
didFinishPickingMediaWithInfo info: [String : Any]) {
if let asset = info[UIImagePickerControllerPHAsset] as? PHAsset,
let creationDate = asset.creationDate {
print(creationDate) // Here is the date when your image was taken
}
dismiss(animated: true)
}
}
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