How to add image in PHAsset and delete it from photo library? - objective-c

Question

I am working on an app like hiding photos and I want to move the images to my app so for that I have to import images from photo library and delete that image from library but I cant understand how to work with PHAssets and where to implement.
I used the UIPickerview to pick the image and then delete it from library please anyone can help me for that
This the picker where I get image :
UIImage *chosenImage = info[UIImagePickerControllerEditedImage];
And this is for delete but what is asset :
[[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{
[PHAssetChangeRequest deleteAssets:formatWithOrientation];
} completionHandler:^(BOOL success, NSError *error) {
NSLog(#"Finished deleting asset. %#", (success ? #"Success." : error));
}];

Answer 1

Try this code. It's working for me.
PHFetchResult *asset = [PHAsset fetchAssetsWithALAssetURLs:#“Your asset url” options:nil];
[asset enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
NSLog(#"%#",[obj class]);
[[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{
BOOL req = [obj canPerformEditOperation:PHAssetEditOperationDelete];
if (req) {
NSLog(#"true");
[PHAssetChangeRequest deleteAssets:#[obj]];
}
} completionHandler:^(BOOL success, NSError *error) {
NSLog(#"Finished Delete asset. %#", (success ? #"Success." : error));
if (success) {
NSLog(#“delete successfully”);
}
}];
}];