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以下代码已成功构建，对我来说似乎还可以，但不起作用...请注意，我是键值编码的新手，您的帮助将不胜感激...在表格视图中委托 didSelectRowAtIndexPath: 方法在这里categoriesList 是一个包含 5 个条目的简单表格

NSUInteger row = [indexPath row];
NSString *rowString = [categoriesList objectAtIndex:row];
NSString *path = [[NSBundle mainBundle] pathForResource:@"DataBase" ofType:@"plist"];
NSDictionary *rootDict = [[NSDictionary alloc] initWithContentsOfFile:path];
NSArray *allRootKeys = [rootDict allKeys];
NSMutableArray *mutableArray = [[NSMutableArray alloc] init];
for (NSString *name in allRootKeys) {
    NSInteger index = [allRootKeys indexOfObject:name];
    NSDictionary *newDict = [allRootKeys objectAtIndex:index];
    if ([newDict valueForKey:@"Class"] == rowString)
        [mutableArray addObject:[allRootKeys objectAtIndex:index]]; 
}   
NSArray *childControllerArray = [[NSArray alloc] initWithArray:mutableArray];

现在我将 childControllerArray 传递给我的下一个控制器的 loadArray ivar，当使用特定数组选择任何行并显示该数组的内容时，它会被推送。当我删除上面的代码并将一个简单的对象数组传递给它，它工作得很好....请帮助

给出的例外是：

Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<NSCFString 0x543eb0> valueForUndefinedKey:]: this class is not key value coding-compliant for the key Class.

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1 回答 1

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[rootDict allKeys]; //这是一个 NSStrings 数组，而不是 NSDictionarys 数组

此代码无法工作

NSArray *allRootKeys = [rootDict allKeys];
NSDictionary *newDict = [allRootKeys objectAtIndex:index];
于 2009-06-18T08:01:21.680 回答