objective-c - 使用TouchXML无法在iPhone上访问已解析的.xml文件中的NSArray元素

Question

我有一个NSMutableArray *myArray，这是使用TouchXML正确解析.xml的结果。

我只想使用键name提取所有元素，然后将其存储在单独的NSMutableArray中，但是我无法访问最终的NSMutableArray *namesList，这使我的iPhone应用程序立即崩溃，因为它仅包含最后一个枚举的字符串，而不是整个数组。

这是代码:

NSMutableArray *namesList = [[NSMutableArray alloc] initWithArray:myArray copyItems:YES];

       int i;
        for (i = 0; i < [myArray count]; i++) 
           {
            namesList = [[myArray objectAtIndex:i] objectForKey:@"name"];
            NSLog(@"All Names: %@", namesList);    
           }

          NSLog(@"First Name: %@", [namesList objectAtIndex:0]); <-- crashing line

这是NSLog:

-[__NSCFString objectAtIndex:]: unrecognized selector sent to instance 0x6a42540
2012-04-04 10:34:07.882 Sections[3610:f803] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFString objectAtIndex:]: unrecognized selector sent to instance 0x6a42540'

Answer 1

您应该可以执行以下操作:

NSMutableArray * namesList = [NSMutableArray alloc] init];

for(i = 0; i < [myArray count]; i++)
{ 

    NSString * tempString = [NSString stringWithString:[[myArray objectAtIndex:i] objectForKey:@"name"]];
    [namesList addobject:tempString];
}

 NSLog(@"First Name: %@", [namesList objectAtIndex:0]);