Objective-C设置集合的委托

Question

我正在尝试将委托设置为我的UITextfield集合，以便我可以在所有文本字段上调用resignFirstResponder。我试过的没有回应。

@property (nonatomic, weak) IBOutletCollection(UITextField) NSMutableArray *textFields; 

- (void)viewDidLoad
{
    [_textFields enumerateObjectsUsingBlock:^(UITextField *textfield, NSUInteger idx, BOOL *stop)
    {
        textfield.delegate=self;
    }];
}

- (BOOL) textFieldShouldReturn:(UITextField *)textFields
{
    NSLog(@"textFieldShouldReturn Fired :)");
    [_textFields enumerateObjectsUsingBlock:^(UITextField *textfield, NSUInteger idx, BOOL *stop)
    {
        [textfield resignFirstResponder];
    }];

    return YES;
}

Answer 1

您是否在.h？

中添加了UITextFieldDelegate

@interface MyVC : UIViewController <UITextFieldDelegate>

也许可以试试：

for (UITextField __strong *field in self.textFields)
   field.delegate = self;