Master DetailView 中的数据访问与多个 Xib for Detail

Question

我有一个类似 userName,DOB,Registation No: 和 Address 的数据，我为它创建了 10 个 XIB 文件 对于打开的详细视图当单击 MasterView 表单元格时，在详细视图的第二个 XIB 文件中，当我在第二个 Xib 中选择用户时，我有一个用户信息，我如何在我的第 3 到第 10 个 XIB 中访问该数据??我不知道 iphone bcoz m new in iphone development 中的数据委托？？

Answer 1

根据我对您的项目的理解：

1. 您从 MasterViewController（第一个控制器）开始
2. 选择或单击行/单元格后，另一个控制器加载，其中包含 用户列表？ （我不太确定）其中每个用户都有信息（包含用户名、出生日期等）。因此，这意味着在此控制器中 - 您将这些信息分配给相应的用户。 （第二控制器）
3. 然后，当您选择特定用户时，另一个控制器会加载到您想要使用来自该控制器的数据的位置 - 可能是您想要显示从第二个控制器分配的那些信息的位置。 （第三控制器）

所以，如果我们在同一页面上，这就是您要执行的操作：

（假设你已经完成了 MainView (FirstController) 并且你已经在 SecondViewController 中了）

对于初学者，您可以这样做：

1. 在 ThirdViewController 中创建一个全局变量，该变量将保存 SecondViewController 传递的信息。在这种情况下，

////////~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~///////// ////////~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ThirdViewController.h~~~~~~~~~ ~~~~~~~~~~~~~~~~~~///////// ////////~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~/////////

@interface ThirdViewController:UIViewController{
    NSDictionary *dictInformation;
}
@property (nonatomic, retain) NSDictionary *dictInformation;
@end

@implementation ThirdViewController
@synthesize dictInformation;

...
   // some codes here...
   // you can use the information passed from the SecondViewController
...

- (void)dealloc{
     [dictInformation release], dictInformation = nil;
     [super dealloc];
}
@end

////////~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~///////// ////////~~~~~~~~~~~~~~~~~~~~~~~~~~~~~SecondViewController.h~~~~~~~~~ ~~~~~~~~~~~~~~~~///////// ////////~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~/////////

@implementation SecondViewController

    // This is the assignment of data. You can put this in viewDidload
    // user 1
     NSMutableDictionary *aUser1 = [[NSMutableDictionary alloc] init];
    [aUser1 setObject:@"josh123" forKey:@"userName"];
    [aUser1 setObject:@"01-01-1987" forKey:@"dateOfBirth"];
    [aUser1 setObject:@"12345678" forKey:@"regNumber"];
    [aUser1 setObject:@"24-H 1st St. New York" forKey:@"address"];
    // user 2
    NSMutableDictionary *aUser2 = [[NSMutableDictionary alloc] init];
    [aUser2 setObject:@"josh321" forKey:@"userName"];
    [aUser2 setObject:@"01-02-1988" forKey:@"dateOfBirth"];
    [aUser2 setObject:@"87654321" forKey:@"regNumber"];
    [aUser2 setObject:@"42-H 1st St. New York" forKey:@"address"];

   // I assigned all users to an array
    NSArray *arrayOfUsers = [[NSArray alloc] initWithObjects:aUser1, aUser2, nil];
    [aUser1 release];
    [aUser2 release];

   // Pass the value of arrayOfUsers somewhere to that it can be accessed
   // or it can be a 

   /* At this point, the following has values:
   arrayOfUsers[0] = aUser1 -> {'josh123', '01-01-1987', '12345678', '24-H 1st St. New York'}
   arrayOfUsers[1] = aUser2 -> {'josh321', '01-02-1988', '87654321', '42-H 1st St. New York'}
   */

    // You can actually add the following codes anywhere, depending on your implementation. It can be when you clicked a cell or a button, etc.

      ThirdViewController *thirdViewController = [[ThirdViewController alloc] initWithNibName:@"ThirdViewController" bundle:nil];
    // assign a dictionary value to dictInformation which is found in ThirdViewController
    // If you are using UITableView, then, this should be done when you are selecting a cell in the tableView and the value of the index should be indexPath.row
      [thirdViewController setDictInformation:[arrayOfUsers objectAtIndex:0]]; 
      // This pushes to the ThirdViewController
      [self.navigationController pushViewController:thirdViewController animated:YES];
      [thirdViewController release];

      ...
@end

注意：这只是代码片段...我只是想告诉你如何去做。不过，希望这会有所帮助。祝你好运！ :)