iOS，長按圖片保存實現方法，輕鬆搞定！

一、添加手勢識別：

 UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(imgTapCliclk:)];

  UILongPressGestureRecognizer *longTap = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(imglongTapClick:)];

  二、imaglongTapClick：

-(void)imglongTapClick:(UILongPressGestureRecognizer *)gesture

{

    if(gesture.state == UIGestureRecognizerStateBegan)

    {

        UIActionSheet *actionSheet = [[UIActionSheet alloc]

                                      initWithTitle:@"保存圖片"

                                      delegate:self

                                      cancelButtonTitle:@"取消"

                                      destructiveButtonTitle:nil

                                      otherButtonTitles:@"保存圖片到手機",nil];

        actionSheet.actionSheetStyle = UIActionSheetStyleBlackOpaque;

        [actionSheet showInView:self];

    

        UIImageView *img = (UIImageView *)[gesture view];

        _sentImg = img;

    }

}

- (void)actionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger)buttonIndex

{

    if (buttonIndex == 0) {

        UIImageWriteToSavedPhotosAlbum(_sentImg.image, self, @selector(imageSavedToPhotosAlbum:didFinishSavingWithError:contextInfo:), nil);

    }

}

 

 

#pragma mark --- UIActionSheetDelegate---

- (void)imageSavedToPhotosAlbum:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo

{

    NSString *message = @"呵呵";

    if (!error) {

        message = @"成功保存到相冊";

        UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"提示" message:message delegate:self cancelButtonTitle:@"肯定" otherButtonTitles: nil];

        [alert show];

        

    }else

    {

        message = [error description];

        UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"提示" message:message delegate:self cancelButtonTitle:@"肯定" otherButtonTitles: nil];

        [alert show];

    }

}