iOS，长按图片保存实现方法，轻松搞定！

1、添加手势识别：

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

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

2、imaglongTapClick：

-(void)imglongTapClick:(UILongPressGestureRecognizer *)gesture

{

if(gesture.state == UIGestureRecognizerStateBegan)

{

UIActionSheet *actionSheet = [[UIActionSheet alloc]

initWithTitle:@"保存图片"

delegate:self

cancelButtonTitle:@"取消"

destructiveButtonTitle:nil

otherButtonTitles:@"保存图片到手机",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 = @"成功保存到相册";

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

[alert show];

}else

{

message = [error description];

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

[alert show];

}

}