如何根据先前列表的变量创建列表

Question

我有一个选择列表。无论您在列表中做出什么选择，都应该决定下一个列表中可用的选择。我目前收到

错误 "Can’t get item 1 of \"\"."项目 1 的中的编号 -1728 ""

第一个列表中的 set 变量似乎没有输入到 If Else If 语句中。

    set currentSupport to "" -- initialize the variable
    set supportList to choose from list {"A", "B"} with prompt "Source:" default items {"A"}
    set currentSupport to result

    set currentPR to "" -- initialize the variable
    if currentSupport is "A" then
        set misrouteList to choose from list {"1", "2", "3", "4"} with title "Prepared Responses" with prompt "Reason:"
        set currentPR to result
    else if currentSupport is "B" then
        set misrouteList to choose from list {"5", "6", "7", "8", "9", "10"} with title "Prepared Responses" with prompt "Reason:"
        set currentPR to result
    end if


    set supportChoice to item 1 of currentSupport
    set prChoice to item 1 of currentPR

Answer 1

choose from list returns false 如果用户按下 Cancel 或 list 甚至 with multiple selections未启用。

您必须在 if - else 表达式

之前展开列表
set currentSupport to "" -- initialize the variable set supportList to choose from list {"A", "B"} with prompt "Source:" default items {"A"} if supportList is false then return set currentSupport to item 1 of supportList set currentPR to "" -- initialize the variable if currentSupport is "A" then set misrouteList to choose from list {"1", "2", "3", "4"} with title "Prepared Responses" with prompt "Reason:" if misrouteList is false then return set currentPR to item 1 of misrouteList else if currentSupport is "B" then set misrouteList to choose from list {"5", "6", "7", "8", "9", "10"} with title "Prepared Responses" with prompt "Reason:" if misrouteList is false then return set currentPR to item 1 of misrouteList end if set supportChoice to currentSupport set prChoice to currentPR

或无冗余代码

set supportList to choose from list {"A", "B"} with prompt "Source:" default items {"A"} if supportList is false then return set currentSupport to item 1 of supportList if currentSupport is "A" then set responseList to {"1", "2", "3", "4"} else -- there is only A or B set responseList to {"5", "6", "7", "8", "9", "10"} end if set misrouteList to choose from list responseList with title "Prepared Responses" with prompt "Reason:" if misrouteList is false then return set currentPR to item 1 of misrouteList set supportChoice to currentSupport set prChoice to currentPR

或将选择保留为列表并检查 {"A"}

set supportList to choose from list {"A", "B"} with prompt "Source:" default items {"A"} if supportList is false then return if supportList is {"A"} then set responseList to {"1", "2", "3", "4"} else set responseList to {"5", "6", "7", "8", "9", "10"} end if set misrouteList to choose from list responseList with title "Prepared Responses" with prompt "Reason:" if misrouteList is false then return set supportChoice to item 1 of supportList set prChoice to item 1 of misrouteList

如何根据先前列表的变量创建列表

How do you create a list based on a previous list's variable

applescript

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