构建类名称表单字符串 [英] Building class names form strings

问题描述

我有一个这样的字符串数组：

I have an array of strings like this:

tableArray: { "Map", "Web", "Help" + 10 other strings}

该数组用于在UITableViewController中构建表单元格。当你点击我想要相应的视图控制器显示，在didSelectRowAtIndexPath方法。

The array is used to build the table cells in a UITableViewController. When tapped I want the appropriate view controller to show, in the didSelectRowAtIndexPath method.

而不是创建一个大的开关，或如果.. then .. else语句，不知何故从上面的字符串创建类名，使Map成为MapViewController：

Instead of creating a large switch, or if .. then .. else statement, can I somehow create the class name from the strings above, so that Map becomes MapViewController:

MapViewController *detailViewController = [[MapViewController alloc] initWithNibName:@"MapViewController" bundle:nil];
[self.navigationController pushViewController:detailViewController animated:YES];
[detailViewController release];

..和Web创建WebViewController等。

.. and "Web" creates WebViewController etc.

推荐答案

Class theClass = NSClassFromString(classNameStr);
id myObject = [[theClass alloc] init];

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