ios - UIViewController没有收到touchesBegan消息

我的UIViewController中有一个UIScrollView。我需要检测任何形式的接触，然后执行某些操作。我还需要什么？

- (BOOL)canBecomeFirstResponder {
    return YES;
}

- (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];
    [self becomeFirstResponder];
}

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    NSLog(@"TOUCHED"); // never happens
    for (UITouch *touch in touches) {
        if ( [touch view] == self.myScrollView)
        {
            //do something
        }
    }
}

最佳答案

两种选择:

子类UIScrollView并实现您的touchesBegan [...]代码
有

将UIView添加到您的UIScrollView并使用该UIView的
touchesBegan [...]委托方法

关于ios - UIViewController没有收到touchesBegan消息，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/10793809/