IOS-Controller中点击屏幕退出键盘

-(void)addNotification{    NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];    UITapGestureRecognizer *singleTapGR =    [[UITapGestureRecognizer alloc] initWithTarget:self                                            action:@selector(tapAnywhereToDismissKeyboard:)];    NSOperationQueue *mainQuene =[NSOperationQueue mainQueue];    [nc addObserverForName:UIKeyboardWillShowNotification                    object:nil                     queue:mainQuene                usingBlock:^(NSNotification *note){                    [self.view addGestureRecognizer:singleTapGR];                }];    [nc addObserverForName:UIKeyboardWillHideNotification                    object:nil                     queue:mainQuene                usingBlock:^(NSNotification *note){                    [self.view removeGestureRecognizer:singleTapGR];                }];}

- (void)tapAnywhereToDismissKeyboard:(UIGestureRecognizer*)gestureRecognizer {    //此method会将self.view里所有的subview的first responder都resign掉    [inputField resignFirstResponder];    starSuperView.hidden  =YES;}