在Viewcontroller中创建文本字段并在NsObject类中退出文本字段

Question

I have to resign textfield that has created in a view controller, and need to resign that textfield in an NSObject class. If I create an object for the view controller in NSObject it will create an new instance and can't able to access that textfield. My code is

ViewController.m

    -(void)viewWillAppear:(BOOL)animated
    {
         cardNo1=[self createTextField:80  :230 :45 :26 :@"Helvetica Light":NSTextAlignmentCenter];

         cardNo2=[self createTextField:128 :230 :45 :26 :@"Helvetica Light":NSTextAlignmentCenter];
         cardNo3=[self createTextField:176 :230 :45 :26 :@"Helvetica Light":NSTextAlignmentCenter];
         cardNo4=[self createTextField:224 :230 :45 :26 :@"Helvetica Light":NSTextAlignmentCenter];
         cardNo5=[self createTextField:272 :230 :35 :26 :@"Helvetica Light":NSTextAlignmentCenter];

    }

NSObject.m

-(void)_timerFired
{
    ViewContoller *iphoneobj=[[ViewContoller alloc]init];
    [iphoneobj1.cardNo1 resignFirstResponder];
    [iphoneobj1.cardNo2 resignFirstResponder];
    [iphoneobj1.cardNo3 resignFirstResponder];
    [iphoneobj1.cardNo4 resignFirstResponder];

}

In NSObject class it will create an new instance for view controller, so cardNo1, cardNo2, etc will return nil object, Can any one suggest how to resign text field in NSObject class

Answer 1

You cannot do like this, if you are allocating your view controller then inside that you need to initialise your textfield also after that only you can access it. So try to modify your code in such a way that you should not alloc init your view controller inside your timerFired method. But instead you can directly check the instance of your view controller and if exist then try to access the textfield.

Answer 2

我通过在NSObject类中创建该视图控制器的对象来得到答案，并且该对象的值将在视图控制器类中分配，并且我将在NsObject类中使用该对象访问我的文本字段。