如何将手势识别器从一个视图传递到另一个视图 [英] How can I pass a gesture recognizer from one view to another

问题描述

我有一个视图，其中包含几个子视图，这些子视图是带有多个按钮的复杂控件. 超级视图具有用于点击，滑动等的手势识别器.

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

在某些情况下，当我接收到一次或两次触摸时，我希望超级视图将手势识别器传递给子视图进行处理.

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.

例如:

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
    }
}

推荐答案

好吧，您可以创建一个继承自UIView的自定义视图，然后覆盖:

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

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

通过此方法，您可以返回要处理事件的视图.

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

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

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