Master DetailView 中的数据访问与多个 Xib for Detail
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【中文标题】Master DetailView 中的数据访问与多个 Xib for Detail【英文标题】:Data Access in Master DetailView with multiple Xib for Detail 【发布时间】:2012-03-16 05:55:26 【问题描述】: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??
【问题讨论】:
【参考方案1】:根据我对您的项目的理解:
-
您从 MasterViewController(第一个控制器)开始
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)
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:
-
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! :)
【讨论】:
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