Tap Gesture Recognizer

Question

I am developing Camera App. I want to detect the number of taps that user has tapped. How can I get number of taps from the user.

UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tapResponder:)];
tap.numberOfTapsRequired =1;
[self.view addGestureRecognizer:tap];

-(void)tapResponder: (UITapGestureRecognizer *)sender{
   NSLog(@"Double Tapped");
}

Also, I want to limit user to tap only 50 taps. Here i can able to fit the taps instead of 1 but, how to detect how many taps that the user has tapped and stop the camera. Please help me to do this. I don't have much knowledge about the tap gesture.

score 0 · Answer 1 · answered Sep 28 '16 at 20:18

0

Create global class variable like "userTaps" and iterate it each time if method tapResponder was called, so it means each time when user perform tap action.

answered Sep 28 '16 at 20:18

Mr. A

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Thanks @Mr.A , Please give some example – Chandrika Visvesh Sep 28 '16 at 20:23

score 0 · Answer 2 · answered Jun 22 '17 at 07:01

0

To limit the number of taps, in your case 50 Taps,

tap.numberOfTapsRequired = 50;

In case if you are limiting the user for 50 taps, then there is no point to count the taps. The selector tapResponder: will get called only after exact 50 taps.

answered Jun 22 '17 at 07:01

byJeevan

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Tap Gesture Recognizer

2 Answers2