长按UITabBarItem后禁用切换选项卡

Question

我想禁用UITabBarViewController在特定UITabBarItem切换到长按tag的功能。

我尝试的是

1. 将UITabBarViewController UIGestureRecognizerDelegate归为UILongPressGestureRecognizer
2. 添加delegate并将其self设置为gestureRecognizerShouldBegin
3. 覆盖NO并将其返回UITapGestureRecognizer *recognizer

但它没有用。

请注意，我已将UITabBarItem添加到[self.tabBar.subviews[2] addGestureRecognizer:recognizer] 之一，如下所示：

UITapGestureRecognizer

它工作正常。即使长时间按下，我也希望立即禁用识别长按并立即触发dataset。

由于

Answer 1

UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc]
                                             initWithTarget:self 
                                             action:@selector(handleLongPress:)];
        longPress.minimumPressDuration = 0.5;
        [self addGestureRecognizer:longPress];

和句柄长按法

-  (void)handleLongPress:(UILongPressGestureRecognizer*)sender { 
    if (sender.state == UIGestureRecognizerStateEnded) {
      NSLog(@"UIGestureRecognizerStateEnded");
    //Do Whatever You want on End of Gesture
[[[[self.tabBarController tabBar]items]objectAtIndex:0]setEnabled:FALSE];
     }
    else if (sender.state == UIGestureRecognizerStateBegan){
       NSLog(@"UIGestureRecognizerStateBegan.");
   //Do Whatever You want on Began of Gesture
     }
  }

在AppDelegate来电

中，让UITabBarControllerDelegate成为didFinishLaunchingWithOptions:

   UITabBarController *tabBarController = (UITabBarController *)self.window.rootViewController;
    tabBarController.delegate = (id)self;

并添加此方法：

 - (BOOL)tabBarController:(UITabBarController *)tabBarController shouldSelectViewController:(UIViewController *)viewController; 
{    
       if (viewController.restorationIdentifier isEqualToString:@"foo")
           return YES;
       else
           return NO;
}