UITapGestureRecognizer not working, Objective-C

Question

I apologize for asking this question for the millionth time, I've read the other questions asking the same thing and I couldn't find the answer to my problem!

I made a UITapGestureRecognizer that is just not working, can someone take a look at my code and tell me what I'm doing wrong?

-(void) formatCellForY: (CGFloat) y{

CGRect screen = [[UIScreen mainScreen] bounds];
CGFloat cellHeight = 70;

self.cell = [[UIImageView alloc] initWithImage:[UIImage imageNamed: @"Cell"]];
[self.cell setFrame:CGRectMake(20, y, screen.size.width - 40, cellHeight)];

self.cell.backgroundColor = [UIColor grayColor];
self.cell.userInteractionEnabled = YES;


self.cell.layer.shadowColor = [UIColor blackColor].CGColor;
self.cell.layer.shadowOffset = CGSizeMake(0, 1);
self.cell.layer.shadowOpacity = 1.0;
self.cell.layer.shadowRadius = 1.0;
self.cell.layer.cornerRadius = 1.0;
self.cell.clipsToBounds = NO;

UILabel *titleLabel = [[UILabel alloc] initWithFrame:CGRectMake(20, 5, self.cell.frame.size.width - 40, cellHeight*(.4))];
titleLabel.numberOfLines = 32;
titleLabel.text = self.program.programName;
titleLabel.textColor = [UIColor whiteColor];
titleLabel.userInteractionEnabled = YES;
[self.cell addSubview:titleLabel];

UILabel *explanationLabel = [[UILabel alloc] initWithFrame:CGRectMake(20, titleLabel.frame.origin.y + titleLabel.frame.size.height, titleLabel.frame.size.width, cellHeight - (titleLabel.frame.origin.y+ titleLabel.frame.size.height))];
explanationLabel.text = self.program.programDescription;
explanationLabel.numberOfLines = 3;
explanationLabel.textColor = [UIColor whiteColor];
explanationLabel.font = [UIFont systemFontOfSize:10.0];
explanationLabel.userInteractionEnabled = YES;
[self.cell addSubview:explanationLabel];

self.tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(goToInfoPage:)];
self.tap.numberOfTapsRequired = 1;
self.tap.numberOfTouchesRequired = 1;
self.tap.enabled = YES;
[self.cell addGestureRecognizer:self.tap];

NSLog(@"%@", self.tap);
}

Here is the code I used to add the cell to the screen.

for (CKRecord *record in records) {
        SBHProgram *program = [SBHProgram programForRecord:record];
        SBHCell *cell = [SBHCell cellForProgram:program andY:90*i];
        i++;
        [scrollView addSubview:cell.cell];
}

You've created the "cell" but have you added the "cell" to any subviews yet? I see you've added subviews to the cell....... — kvr, Mar 13 '16 at 05:08
Yes the cell is added to the main view in the MainViewController — Neil Shweky, Mar 13 '16 at 05:12
@Nshweky: Are you adding the cell outside the view area of its parent? — Ruchira Randana, Mar 13 '16 at 05:17
I don't think so, just a simple [self.view addSubview: obj.cell]; — Neil Shweky, Mar 13 '16 at 05:25
Can you post some more code? specifically where you are adding the cell to ur main view? is it a separate view controller? where have you defined the above code, what class it is? — Vivek Molkar, Mar 13 '16 at 06:04
self.cell is a UIImageView, and the above code is a subclass of NSObject called SBHCell with a "cell" as one of it's properties. When I initialize the cell in the MainViewController I also add its imageView property to the view. — Neil Shweky, Mar 13 '16 at 16:50
Could it have something to do that I'm using dispatch_async(dispatch_get_main_queue(), ) to add the cell to the scrollview? — Neil Shweky, Mar 13 '16 at 22:10

score 0 · Answer 1 · answered Mar 13 '16 at 08:21

0

You have missed adding self.cell to view. You are able to see labels with texts because you have added self.cell.clipsToBounds = NO;

All you have to do is add cell to view.

[self.view addSubview:self.cell]

answered Mar 13 '16 at 08:21

nutz

212
1
4

From which method are you calling formatCellForY: ? – nutz Mar 13 '16 at 17:20
The initializer of the class SBHCell. – Neil Shweky Mar 13 '16 at 17:29
It's possible that your scrollview is consuming the tap. Look at this http://stackoverflow.com/questions/17701323/uiscrollview-delayscontenttouches-issue delayContentTouches should solve your issue – nutz Mar 13 '16 at 17:37
Is it possible that it has something to do with what I'm assigning to the target to? I changed that and it started receiving the touch, just crashing when it does. – Neil Shweky Mar 15 '16 at 02:13

score -1 · Answer 2 · answered Mar 13 '16 at 08:30

-1

PLEASE ADD

self.tap.delegate = self;

answered Mar 13 '16 at 08:30

Sucharu Hasija

1,096
11
23

UITapGestureRecognizer not working, Objective-C

2 Answers2