Why it is not detecting which image I'm tapping on

Question

Possible Duplicate:
Tracing the exact location of the longpressgesture with CGPoint

It always gives NSLog for image pressed 0. I'm don't understand what it is exactly what I'm doing wrong. It never gives me the number of the image I'm pressing. Even when I try to save the image I tap on it always saves the very last image.

 - (void)viewDidLoad

{

UIScrollView *imageScrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
imageScrollView.delegate = self;
imageScrollView.pagingEnabled = YES;
for (int i = 0; i < 61; i++) {

    CGFloat xOrigin = i * self.view.frame.size.width;

    UIButton *myButton = [UIButton buttonWithType:UIButtonTypeCustom];

    [myButton addTarget:self action:@selector(dismissView:) forControlEvents:UIControlEventTouchUpInside];

    myButton.frame = CGRectMake(xOrigin, 10, 60, 35);


    [myButton.layer setMasksToBounds:YES];

    [myButton.layer setCornerRadius:10.0f];

    myButton.layer.borderWidth = 2;

    myButton.layer.borderColor = [[UIColor whiteColor] CGColor];

    [myButton setTitle:@"Done" forState:UIControlStateNormal];

    myButton.backgroundColor = [UIColor clearColor];

    NSString *imageName = [NSString stringWithFormat:@"image%d.png", i];

    _image = [UIImage imageNamed:imageName];

    _imageView = [[[UIImageView alloc] initWithImage:_image]autorelease];

    _imageView.frame = CGRectMake(xOrigin, 0, self.view.frame.size.width, self.view.frame.size.height);




    UILongPressGestureRecognizer *gestureRecognizer = [[UILongPressGestureRecognizer alloc]
                                                       initWithTarget:self
                                                       action:@selector(handleLongPress:)];

    imageScrollView.userInteractionEnabled = YES;

    [imageScrollView addGestureRecognizer:gestureRecognizer];
    gestureRecognizer.delegate = self;
    [gestureRecognizer release];

    [imageScrollView addSubview:_imageView];

    [imageScrollView addSubview:myButton];

}

imageScrollView.contentSize = CGSizeMake(_imageView.frame.size.width * 61 , _imageView.frame.size.height);

[self.view addSubview:imageScrollView];

 }

- (void)handleLongPress:(UILongPressGestureRecognizer*)gestureRecognizer{

if (gestureRecognizer.state == UIGestureRecognizerStateBegan){
    UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:nil delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil otherButtonTitles:@"Save Photo", nil];
    actionSheet.actionSheetStyle = UIActionSheetStyleBlackTranslucent;
   [actionSheet showInView:self.view];
    [actionSheet release];

}}

-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {

switch (buttonIndex) {
    case 0:

        [self performSelector:@selector(LongPress:) withObject:nil];

       break;

    default:
        break;

}}


 - (void)LongPress:(UILongPressGestureRecognizer*)gestureRecognizer{


UIView *view  = gestureRecognizer.view;
int index = view.tag;

//UIImageWriteToSavedPhotosAlbum(index, self, @selector(image: didFinishSavingWithError:contextInfo:), nil);
  NSLog(@"image pressed %i", index);          
   }

score 1 · Answer 1 · edited May 23 '17 at 12:18

Because you never set the tag for the view so it defaults to 0. And seriously, how many times are you going to ask the same question? You've been given quite a lot of good feedback, use it.

Why it is not detecting which image I'm tapping on

1 Answers1