UIImageWriteToSavedPhotosAlbum(image,nil,nil,nil);

或者

#import

[[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{

    PHAssetChangeRequest *changeRequest = [PHAssetChangeRequest creationRequestForAssetFromImage:image];

    changeRequest.creationDate          = [NSDate date];

} completionHandler:^(BOOLsuccess, NSError *error) {

    if(success) {

        NSLog(@"successfully saved");

    }

    else{

        NSLog(@"error saving to photos: %@", error);

    }

}];