一个用于多个UITabBar节的viewcontroller [英] One viewcontroller for multiple UITabBar sections

问题描述

我目前正在使用UITabBar和用于显示数据的表格视图开发一个简单的iPhone应用程序.该选项卡包含8个部分，每个部分包含相同的视图，但使用不同的数据源，表视图的标题也不同，但不同之处在于视图是相同的.

I'm currently developing a simple iPhone application using a UITabBar and table views for displaying data. The tabbar contains 8 sections, each containing the same view but using a different data source, the title of the table view is also different, but apart from that the views are the same.

我想为每个视图使用相同的viewcontroller，并提供用于设置数据源和表标题的选项，而不是编写8个具有最小差异的独立viewcontroller.这是否可能，更重要的是，这怎么可能?

I'd like to use the same viewcontroller for each view, with options to set the datasource and table title, instead of writing 8 separate viewcontrollers with minimal differences. Would that be possible and, more importantly, how would this be possible?

更新
使用Ole Begemann发布的代码，它在一定程度上可以正常工作.但是，我意识到我最初的问题混淆了一些行话. UITableViewDataSource是一个官方协议，对于我要完成的工作而言，它做得太多了.我只需要逻辑一次设置表，填充表视图的数据是唯一不同的东西.我所说的数据源"只是一个对象字典，可以由我的viewcontroller的UITableView函数使用.

Update
I have it working to a certain extent, using the code posted by Ole Begemann. However, I realised that my initial question mixed up some jargon. UITableViewDataSource is an official protocol and does too much for what I'm trying to accomplish. I only need the logic to set up tables once, the data to populate the table view is the only thing that's different. What I meant by "datasource" was just an dictionary of objects which could be used by my the UITableView functions of my viewcontroller.

NSDictionary *row1 = [[NSDictionary alloc] initWithObjectsAndKeys:@"1", @"Id", 
                    @"The Name", @"Name", 
                    @"Post", @"Type",
                    @"09-09-2009", @"Meta",
                    @"This is the excerpt, @"Excerpt",
                    @"This is the body text", @"Body",
                    @"icon.jpg", @"Icon", 
                    @"image.jpg", @"Image", nil];

NSArray *array = [[NSArray alloc] initWithObjects:row1, nil];

如何将字典从委托人传递给UITableViewController?

How can I pass this dictionary from the delegate to the UITableViewController?

推荐答案

为

As Daniel says, you can create as many instances of the same view controller as you like and then assign these instances to the tabs of your tab bar controller.

代码看起来像这样(我在这里仅创建了3个实例):

The code could look like this (I only create 3 instances here):

// Create an array of dictionaries that holds the configuration for the table view controllers.
// Assuming tableXDatasource are existing objects that conform to the UITableViewDataSource protocol.
NSArray *tableControllersConfig = [NSArray arrayWithObjects:
    [NSDictionary dictionaryWithObjectsAndKeys:table1Datasource, @"datasource", @"Table 1", @"title", nil],
    [NSDictionary dictionaryWithObjectsAndKeys:table2Datasource, @"datasource", @"Table 2", @"title", nil],
    [NSDictionary dictionaryWithObjectsAndKeys:table3Datasource, @"datasource", @"Table 3", @"title", nil],
    nil];

// Create the table view controller instances and store them in an array
NSMutableArray *tableControllers = [NSMutableArray array];
for (NSDictionary *configDict in tableControllersConfig) {
    // Assuming MyTableViewController is our custom table view controller class
    MyTableViewController *controller = [[MyTableViewController alloc] initWithNibName:@"MyTableViewController" bundle:nil];
    controller.tableView.delegate = controller;
    controller.tableView.dataSource = [configDict valueForKey:@"datasource"];
    controller.title = [configDict valueForKey:@"title"];
    [tableControllers addObject:controller];
    [controller release];
}

// Assign the array of table view controllers to the tab bar controller
self.tabBarController.viewControllers = [NSArray arrayWithArray:tableControllers];

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