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- (void)saveImageToAlbum{    UIImageWriteToSavedPhotosAlbum(self.filterView.image, self, @selector(imageSavedToPhotosAlbum:didFinishSavingWithError:contextInfo:), nil);}- (void)imageSavedToPhotosAlbum:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo{    NSString *message = @"";    if (!error) {        message = @"成功保存到相册";    }else    {        message = [error description];    }    [XHToast showCenterWithText:message];}

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