我是 iPhone 和 Objective C 编程的新手，但我能够让我的代码工作。我只是不确定这是否是最好的方法，因为它需要大量代码并且看起来并不漂亮。
我有一个 UIPickerView 轮，它有 5 个组件、120 个多维数组（每个数组有 13 行和 7 列），我将它们放在“DidSelectRow”方法中。
我的两个问题是：
1）我不应该将所有这些数组放在方法中，而是学习将它们放在单独的文件中，也许是 SQL 数据库？就像我说的那样，pickerview 工作正常，只是它的编码不是很漂亮，也许它并没有让我的应用程序尽可能高效地运行。
2) With all the components and arrays in my UIPickerView, the only way I was able to get my data from the arrays to properly display when a certain combination of pickerwheels is selected was to write A LOT of "if" and "else if"陈述。看起来很可笑，一定有更好的方法！我不知道我是否可以使用或如何为我的方法使用 Switch 语句。如果这有助于任何人理解我正在尝试做的事情，我已经包含了一些示例代码。
我在这里先向您的帮助表示感谢！
if (pressAltWheel == 0 && antiIceWheel == 0 && thrustWheel == 0)
{
{
//4600ft
if (tempWheel == 9 && runwayLengthWheel == 0)
weightValue.text = [NSString stringWithFormat:@"%@",column0[0][0]];
else if (tempWheel == 11 && runwayLengthWheel == 0)
weightValue.text = [NSString stringWithFormat:@"%@",column0[1][0]];
else if (tempWheel == 13 && runwayLengthWheel == 0)
weightValue.text = [NSString stringWithFormat:@"%@",column0[2][0]];
else if (tempWheel == 15 && runwayLengthWheel == 0)
weightValue.text = [NSString stringWithFormat:@"%@",column0[3][0]];
else if (tempWheel == 16 && runwayLengthWheel == 0)
weightValue.text = [NSString stringWithFormat:@"%@",column0[4][0]];
else if (tempWheel == 17 && runwayLengthWheel == 0)
weightValue.text = [NSString stringWithFormat:@"%@",column0[5][0]];
else if (tempWheel == 18 && runwayLengthWheel == 0)
weightValue.text = [NSString stringWithFormat:@"%@",column0[6][0]];
else if (tempWheel == 19 && runwayLengthWheel == 0)
weightValue.text = [NSString stringWithFormat:@"%@",column0[7][0]];
else if (tempWheel == 20 && runwayLengthWheel == 0)
weightValue.text = [NSString stringWithFormat:@"%@",column0[8][0]];
else if (tempWheel == 21 && runwayLengthWheel == 0)
weightValue.text = [NSString stringWithFormat:@"%@",column0[9][0]];
else if (tempWheel == 22 && runwayLengthWheel == 0)
weightValue.text = [NSString stringWithFormat:@"%@",column0[10][0]];
else if (tempWheel == 23 && runwayLengthWheel == 0)
weightValue.text = [NSString stringWithFormat:@"%@",column0[11][0]];
else if (tempWheel == 24 && runwayLengthWheel == 0)
weightValue.text = [NSString stringWithFormat:@"%@",column0[12][0]];
}
//5300ft
{
if (tempWheel == 9 && runwayLengthWheel == 1)
weightValue.text = [NSString stringWithFormat:@"%@",column0[0][1]];
else if (tempWheel == 11 && runwayLengthWheel == 1)
weightValue.text = [NSString stringWithFormat:@"%@",column0[1][1]];
else if (tempWheel == 13 && runwayLengthWheel == 1)
weightValue.text = [NSString stringWithFormat:@"%@",column0[2][1]];
else if (tempWheel == 15 && runwayLengthWheel == 1)
weightValue.text = [NSString stringWithFormat:@"%@",column0[3][1]];
else if (tempWheel == 16 && runwayLengthWheel == 1)
weightValue.text = [NSString stringWithFormat:@"%@",column0[4][1]];
else if (tempWheel == 17 && runwayLengthWheel == 1)
weightValue.text = [NSString stringWithFormat:@"%@",column0[5][1]];
else if (tempWheel == 18 && runwayLengthWheel == 1)
weightValue.text = [NSString stringWithFormat:@"%@",column0[6][1]];
else if (tempWheel == 19 && runwayLengthWheel == 1)
weightValue.text = [NSString stringWithFormat:@"%@",column0[7][1]];
else if (tempWheel == 20 && runwayLengthWheel == 1)
weightValue.text = [NSString stringWithFormat:@"%@",column0[8][1]];
else if (tempWheel == 21 && runwayLengthWheel == 1)
weightValue.text = [NSString stringWithFormat:@"%@",column0[9][1]];
else if (tempWheel == 22 && runwayLengthWheel == 1)
weightValue.text = [NSString stringWithFormat:@"%@",column0[10][1]];
else if (tempWheel == 23 && runwayLengthWheel == 1)
weightValue.text = [NSString stringWithFormat:@"%@",column0[11][1]];
else if (tempWheel == 24 && runwayLengthWheel == 1)
weightValue.text = [NSString stringWithFormat:@"%@",column0[12][1]];
}