检测点击以显示/隐藏UINavigationBar-DetectingtaptoShow/hideUINavigationBar

5  

You can use the method touchesBegan in UIView to detect the tap, so you will have to have a custom subclass of UIView for the viewcontroller's view that you would like to detect taps on. Then you'll have to use the delegate to message your view's controller so it can hide the navigationBar.

你可以使用UIView中的touchesBegan方法来检测tap,因此你必须为viewcontroller的视图设置一个UIView的自定义子类,你想要检测点击。然后你必须使用委托给你的视图控制器发消息,这样它就可以隐藏navigationBar。

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    NSUInteger numTaps = [[touches anyObject] tapCount];
    if (numTaps == 1)
    {
        [delegateController tapDidOccur];  
    }
}

16  

UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(showHideNavbar:)];
[self.view addGestureRecognizer:tapGesture];
[tapGesture release];

-(void) showHideNavbar:(id) sender { // write code to show/hide nav bar here }

This is the way to do it using UIGestureRecognizers available on iOS4

这是使用iOS4上提供的UIGestureRecognizers进行此操作的方法