iOS保存图片到本地笔记

UIImageWriteToSavedPhotosAlbum([[BDFaceImageShow sharedInstance] getSuccessImage], self, @selector(image:didFinishSavingWithError:contextInfo:), NULL);

//- (void)image: (UIImage *) image didFinishSavingWithError: (NSError *) error contextInfo: (void *) contextInfo
//{
//    NSString *msg = nil ;
//    if(error != NULL){
//        msg = @"保存图片失败" ;
//    }else{
//        msg = @"保存图片成功" ;
//    }
//
//    UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"提示" message:msg preferredStyle:UIAlertControllerStyleAlert];
//    [self showViewController:alert sender:nil];
//}