UINavigationBar點擊區域超出、覆蓋的問題

Why does UINavigationBar steal touch events?

http://stackoverflow.com/questions/9079907/why-does-uinavigationbar-steal-touch-events

down vote

I noticed that if you set userInteractionEnabled to OFF, the NavigationBar doesn't "steal" the touches anymore. So you have to subclass your UINavigationBar and in your CustomNavigationBar do this: -(UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event { if ([self pointInside:point withEvent:event]) { self.userInteractionEnabled = YES; } else { self.userInteractionEnabled = NO; } return [super hitTest:point withEvent:event]; } Info about how to subclass UINavigationBar you can find here.

http://stackoverflow.com/questions/6672229/how-to-subclass-uinavigationbar-for-a-uinavigationcontroller-programatically

4down voteaccepted

I found out the answer here(Apple Developer Forum). Apple Support: I recommend that you avoid having touch-sensitive UI in such close proximity to the nav bar or toolbar. These areas are typically known as "slop factors" making it easier for users to perform touch events on buttons without the difficulty of performing precision touches. This is also the case for UIButtons for example. But if you want to capture the touch event before the navigation bar or toolbar receives it, you can subclass UIWindow and override: -(void)sendEvent:(UIEvent *)event; Also I found out,that when I touch the area under the UINavigationBar, the location.y defined as 64,though it was not. So I made this: CustomWindow.h @interface CustomWindow: UIWindow @end CustomWindow.m @implementation CustomWindow - (void) sendEvent:(UIEvent *)event { BOOL flag = YES; switch ([event type]) { case UIEventTypeTouches: //[self catchUIEventTypeTouches: event]; perform if you need to do something with event for (UITouch *touch in [event allTouches]) { if ([touch phase] == UITouchPhaseBegan) { for (int i=0; i<[self.subviews count]; i++) { //GET THE FINGER LOCATION ON THE SCREEN CGPoint location = [touch locationInView:[self.subviews objectAtIndex:i]]; //REPORT THE TOUCH NSLog(@"[%@] touchesBegan (%i,%i)", [[self.subviews objectAtIndex:i] class],(NSInteger) location.x, (NSInteger) location.y); if (((NSInteger)location.y) == 64) { flag = NO; } } } } break; default: break; } if(!flag) return; //to do nothing /*IMPORTANT*/[super sendEvent:(UIEvent *)event];/*IMPORTANT*/ } @end In AppDelegate class I use CustomWindow instead of UIWindow. Now when I touch area under navigation bar, nothing happens. My buttons still don't get touch events,because I don't know how to send this event (and change coordinates) to my view with buttons.