无法从一个视图控制器获取值到另一个

Question

Well I have two view controllers..

In controller1 I have a textField

Now My problem is whenever I enter anything in that textField..I want to use that value in view controller 2...

but the value is coming null in viewController 2...I don't know what is going wrong??

I know I am making silly mistake but what is that?? can anyone help me here?

This is the code of my viewController 2 's .m file

- (void) save_Clicked:(id)sender {

[self.navigationController dismissModalViewControllerAnimated:YES];

textName=txtCoffeeName.text;
rootViewController.nameValue=textName;
NSLog(@"%@",textName);
}

well here I want to use the value of nameValue in rootViewController...which is showing me null..:( rootViewController is the object of RootViewController which is declared in .h file and textName is the string which is declared too

Answer 1

请设置synthesize属性为rootViewController.nameValue，textName的保留。您必须使用self.rootViewController.nameValue，self.textName ...我认为它将解决您的问题。

Answer 2

Do 2 things

1. property and synthesize of your nameValue in your root view controller
2. modify your code as below

-(void) save_Clicked:(id)sender {

textName=txtCoffeeName.text;

rootViewController.nameValue=textName;

NSLog(@"%@",textName);

[self.navigationController dismissModalViewControllerAnimated:YES];

}