选择器不在自定义类对象（Obj-C）中运行

Question

几个输入评论之后被编辑

所以我有一个视图控制器和一个辅助类

//ViewController.h
TextFieldHelper *textFieldHelper = [[TextFieldHelper alloc] initWith:self.containerView scrollView:self.scrollView viewController:self];
[textFieldHelper runTextFieldHelper];

这是我的TextFieldHelper类

//TextFieldHelper.h
@interface TextFieldHelper : NSObject <UITextFieldDelegate>

@property (nonatomic) UIViewController *viewController;
@property (nonatomic) UIView *view;
@property (nonatomic) UIScrollView *scrollView;
@property (nonatomic) UITextField *activeField;

- (instancetype)initWith:(UIView *)view scrollView:(UIScrollView*)scrollView viewController:(UIViewController *)viewController;
- (void)runTextFieldHelper;

@end

//TextFieldHelper.m
- (instancetype)initWith:(UIView *)view scrollView:(UIScrollView *)scrollView viewController:(UIViewController *)viewController {
self = [super init];
if (self) {
//        self.delegate = self;
    self.viewController = viewController;
    self.view = view;
    self.scrollView = scrollView;
}
    return self;
}

#pragma mark - run the text field helper
- (void)runTextFieldHelper {
  UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self
                                                                      action:@selector(hideKeyboard)];
  [self.view addGestureRecognizer:tap];
  [self registerForKeyboardNotifications];
}

- (void)hideKeyboard {
   NSLog(@"%@",@"hello world");
   [self.view endEditing:YES];
}

每次我点击视图时，hideKeyboard方法都不会运行。我在这里缺少什么？

谢谢！

Answer 1

只需替换

UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self.viewController
                                                                      action:@selector(hideKeyboard)];

与

UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self
                                                                      action:@selector(hideKeyboard)];