将字符串值从一个视图控制器传递给另一个

Question

I am using this way to pass a string value from one view controller to another but still it's not working. Please help! From the main menu login method I pass a result value of a web service to SecondMenu:

- (IBAction)MainMenuLogin_Method:(id)sender
{
    SecondMenu *lc2=[[SecondMenu alloc] initWithNibName:@"SecondMenu" bundle:nil];

    lc2.username_TextField.text=@"hello";// in actual it is a soap result

    //[self presentModalViewController:lc2 animated:YES];
    [[[[UIApplication sharedApplication] delegate] window] addSubview:lc2.view];
}

Answer 1

The most likely explanation is that the username_TextField property is not linked to the actual UITextView. (1) Check that the property definition of username_TextField in the SecondMenu header is defined as an IBOutlet and that (2) it is actually linked up in Interface Builder.

Edit:

Looking at the full code at your link, it looks like the username_TextField property is a property of the Class LoginController but in this code you have instance lcv2 as Class SecondMenu . There is nothing in the code you provided to show that the SecondMenu Class has a username_TextField property. If you initialize lcv2 as an instance of LoginController the code above will work assuming you have the outlets wired correcting in interface builder.