iOS - 如何在自定义UIGestureRecognizer

Question

这是我的 CustomUIGestureRecognizer.m

的代码

@implementation CustomTapGestureRecognizer

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    if(_customDelegate != nil && [_customDelegate respondsToSelector:@selector(onTouchDown:)])
    {
        [_customDelegate onTouchDown:self];
    }
}

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
    if(_customDelegate != nil && [_customDelegate respondsToSelector:@selector(onTouchUp:)])
    {
        [_customDelegate onTouchUp:self];
    }
}

- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event
{
    NSLog(@"cancelled");
}

@end

从上面的代码可以看出，我只能检测“触地”和“修饰”事件。但是，我需要检测“内部触摸”控制事件。

当我将手指抬到视线外时，我试图检查是否会触发取消的触摸，这样我就可以知道触摸是否在内部。不幸的是，它没有被召集。

有什么想法吗？谢谢！