Question

Can we use blocks with Gesture Recognizers? It doesn’t appear so. For example, this does not work:

UITapGestureRecognizer *tapped = [[UITapGestureRecognizer alloc] initWithTarget: self
     action:^(id sender) {
     }
];

Am I missing something, or are blocks just not supported by the UIGestureRecognizer class?

Answer 1

However, this should:

UITapGestureRecognizer *tapped = [[UITapGestureRecognizer alloc] initWithTarget:[^{
    // do stuff
} copy] action:@selector(invoke)];

You shouldn’t probably do this, however, since it’s a private method.