ios - 以编程方式执行长按手势

Question

我正在开发一个sdk。我想以编程方式执行添加到视图中的长按手势。我尝试更改手势识别器的状态并将消息发送到主循环，但这不会执行操作

    for (UIGestureRecognizer *currentGesture in currentElement.gestureRecognizers){
        if ([currentGesture isKindOfClass:[UILongPressGestureRecognizer class]]){
            UILongPressGestureRecognizer *longPressGesture = (UILongPressGestureRecognizer *)currentGesture;
            longPressGesture.state = UIGestureRecognizerStateBegan;
            [[NSRunLoop mainRunLoop] runUntilDate:[NSDate dateWithTimeIntervalSinceNow:0.01]];
            longPressGesture.state = UIGestureRecognizerStateChanged;
            [[NSRunLoop mainRunLoop] runUntilDate:[NSDate dateWithTimeIntervalSinceNow:0.5]];
            longPressGesture.state = UIGestureRecognizerStateEnded;
            [[NSRunLoop mainRunLoop] runUntilDate:[NSDate dateWithTimeIntervalSinceNow:1.0]];
            [longPressGesture reset];
            break;
        }
    }

这是我尝试过的。谁能帮我解决这个问题？

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