在appDelegate中添加点击监听,发送通知即可
objective-C:

- (void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    [super touchesBegan:touches withEvent:event];
    
    CGPoint touchLocation = [[[event allTouches] anyObject] locationInView:self.window];
    CGRect statusBarFrame = [UIApplication sharedApplication].statusBarFrame;
    NSLog(@"location.x = %f,location.y = %f",touchLocation.x,touchLocation.y);
    if (CGRectContainsPoint(statusBarFrame, touchLocation))
    {
       //发送通知
      //发通知,监听通知不用我教你了吧,哈哈哈
    }
}

swift:

override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
        
        let location = (touches as NSSet).anyObject()?.locationInView(self.window)
        
        let statusBarFrame = UIApplication.sharedApplication().statusBarFrame
        
        if CGRectContainsPoint(statusBarFrame, location!) {
            
            //发送通知
            print("发送通知")
            NSNotificationCenter.defaultCenter().postNotificationName("StatusBarClickNotification",
                                                                      object: self, userInfo: nil)
            print("通知完毕")

        }
        
    }