UITapGestureRecognizer不会启动UIView子类

Question

I've created a custom subclass of UIView because I needed to override drawRect method. I try to add a UITapGestureRecognizer to it, but this doesn't work for me. Here, the code of my ViewController:

MyCustomView *customView = [[MyCustomView alloc] initWithFrame:CGRectFrame(0, 30, 30, 30)];
[customView setUserInteractionEnabled:YES];

UITapGestureRecognizer *tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(doSomething)];
[customView addGestureRecognizer:tapGestureRecognizer];

I don't understand why when I touch my UIView subclass object, the gesture recognizer doesn't fire up.

Thanks a lot in advance !

FIXED IT OUT !

My view was on a UIImageView, and that UIImageView hadn't the userInteractionEnabled set to YES.

Answer 1

FIXED IT OUT !

My view was on a UIImageView, and that UIImageView hadn't the userInteractionEnabled set to YES.

Answer 2

确保你在某处显示它（ addSubview ）。

Answer 3

Also make sure that userInteractionEnabled is set to true. If that's true, post the code that creates and hooks up the gesture recognizer.

Answer 4

Set the UserInteractionEnable check to true on the subview that you are adding and in the selector method, do pass the object along with it ie

UITapGestureRecognizer *tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(doSomething:)];

and make the selector method as

-(void) doSomething:(UITapGestureRecognizer *)gesture;

Let me know if you are still having an issue. Thanks!