How can I pass a gesture recognizer from one view

问题:

I have a view which contains several subviews which are complex controls with several buttons. The superview has gesture recognizers for taps, swipes etc.

In some cases, when receiving a single or double touch I would like the superview to pass the gesture recognizer to the subview for treatment.

For instance:

singletaprecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(onSingleTapGestureRecognizerDetected:)];

- (void)onSingleTapGestureRecognizerDetected:(UITapGestureRecognizer*)theTapGestureRecognizer
{
    if (someCaseHappens) {
        // do something with the gesture - for instance - move a control from one place to another or some other UI action in the superview
    }
    else {
        // the subview will need to get the gesture and do something with it (imagine the touch was inside a button in a subview - the top superview should disregard the gesture and the button should be pressed) - THIS ISN"T HAPPENING NOW
    }
}

回答1:

Well, you could create a custom view inheriting from UIView and then override:

- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event

From this method you can return the view you want to handle the event.

take a look at: https://developer.apple.com/library/ios/documentation/UIKit/Reference/UIView_Class/UIView/UIView.html#//apple_ref/occ/instm/UIView/hitTest:withEvent: