动态替换atIndex的值？

Question

NSDictionary *item = [NSDictionary dictionaryWithObjectsAndKeys:
                               eyeNameHolder,@"eye",
                               lipsNameHolder,@"lips",nil];

NSMutableArray *arrayItems = [NSMutableArray arrayWithObject:item];
[arrayItems insertObject:item atIndex:dynamical variable];
[arrayItems writeToFile:finalPath atomically:YES];

如何通过点击0到10之间的不同按钮从0到10发送不同的值来动态替换atIndex的值？

Answer 1

NSMutableArray有replaceObjectsAtIndex:withObject:，尝试类似：

[arrayItems replaceObjectsAtIndex:atIndex withObject:/*0-10*/];

Answer 2

我做了类似下面的事情，它运作正常。

AppDelegate* ref = (AppDelegate*) [[UIApplication sharedApplication] delegate];

NSMutableDictionary *item = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                               eyeNameHolder,@"eye",
                               lipsNameHolder,@"lips",nil];

[arrayItems replaceObjectAtIndex:ref.IndexerHolder withObject:item];
        [arrayItems writeToFile:finalPath atomically:YES];