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我有两个视图控制器,firstViewController和secondViewController.我正在使用此代码切换到我的secondViewController(我也传递一个字符串):

secondViewController *second = [[secondViewController alloc] initWithNibName:nil bundle:nil];

second.myString = @"This text is passed from firstViewController!";

second.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;

[self presentModalViewController:second animated:YES];

[second release];

然后我在secondViewController中使用此代码切换回firstViewController:

[self dismissModalViewControllerAnimated:YES];

所有这一切都很好.我的问题是,如何将数据传递给firstViewController？我想从secondViewController传递一个不同的字符串到firstViewController.