[__NSCFString countByEnumeratingWithState:objects:count:]：无法识别的选择器发送到实例 0x16e09f70'答案

【问题标题】：[__NSCFString countByEnumeratingWithState:objects:count:]: unrecognized selector sent to instance 0x16e09f70'[__NSCFString countByEnumeratingWithState:objects:count:]：无法识别的选择器发送到实例 0x16e09f70'
【发布时间】：2016-07-19 15:11:03
【问题描述】：

由于未捕获的异常 'NSInvalidArgumentException' 导致错误终止应用程序，原因：'-[__NSCFString countByEnumeratingWithState:objects:count:]: unrecognized selector sent to instance 0x16e09f70'

if (finalArray.count != 0)
    {
        NSMutableDictionary *fetchDict = [[NSMutableDictionary alloc]initWithDictionary:[finalArray objectAtIndex:indexPath.row]];
        NSMutableArray *valueArr = [[NSMutableArray alloc]initWithArray:[fetchDict allValues].mutableCopy];


        for (NSMutableArray *one in valueArr) {
            for (NSMutableArray *two in one) // Program Stops on This Line
            {
                cell.textLabel.text = [NSString stringWithFormat:@"%@",[two valueForKey:@"Note"]];
            }
        }

    }
}

【问题讨论】：

所以你认为该数组包含数组，但事实并非如此，它至少包含一个字符串...

标签： ios objective-c nsarray

【解决方案1】：

试试这个

if (finalArray.count != 0)
    {
        NSDictinory *fetchDict = [finalArray objectAtIndex:indexPath.row];

  cell.textLabel.text = [NSString stringWithFormat:@"%@",[fetchDict valueForKey:@"Note"]];

    }
}

希望这会有所帮助。

【讨论】：

感谢 Kamlesh 的努力。 Tim007 给出了可行的解决方案。

【解决方案2】：

试试这个

if (finalArray.count != 0)
{
    NSMutableDictionary *fetchDict = [[NSMutableDictionary alloc]initWithDictionary:[finalArray objectAtIndex:indexPath.row]];
    NSMutableArray *valueArr = [[NSMutableArray alloc]initWithArray:[fetchDict allValues].mutableCopy];


    for (NSMutableArray *one in valueArr) {
        if ([one isKindOfClass:[NSMutableArray class]]) { //Check if array here
            for (NSMutableArray *two in one) 
            {
                cell.textLabel.text = [NSString stringWithFormat:@"%@",[two valueForKey:@"Note"]];
            }
        }else {
            NSLog(@"Program stops because this one: %@", one);
        }
    }

}

【讨论】：

工作谢谢！干杯！！ (y)