iPhone SDK:如何将一组值从 ViewController 传递到其他 ViewController?

问题描述

我尝试在 SecondViewController 中创建如下方法:

I tried creating a method like below in SecondViewController:

-(void)setValue:(NSMutableArray*)array
 { 
      //NSMutableArray *newArray = [[NSMutableArray alloc] init];
      newArray = [array retain];
 }

并使用名为 second 的 SecondViewController 对象从 FirstViewController 传递值:

and passing the value from FirstViewController using an object of SecondViewController named second:

[second setValue:existingArray];

existingArray 是一个 NSMutableArray.

existingArray is an NSMutableArray.

可能出了什么问题?

推荐答案

在代码中，您在 SecondViewController 的second"对象中设置了数组.

In the code you have set the array in the "second" object of a SecondViewController.

所以你需要使用那个对象来显示 SecondeViewController，否则它怎么可能不显示数组.

So you need to use that object for displaying the SecondeViewController, other wise how can it won't show the array.

检查以下代码.

 //   In the FirstViewController

- (void)buttonClicked:(id)sender{

    SecondViewController *second = [[SecondViewController alloc] initWithNibName:@"SecondViewController" bundle: nil];
 [second setValue:existingArray];
 [self.navigationController pushViewController:second animated:YES];
 [second release];

}

在代码中，我将数据分配给第二个"对象中的数组，并使用该对象来显示控制器.

Here in the code I am assigning the data to the array in the "second" object and I am using that object to display the controller.

问候，

萨提亚

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