Question

property myValue : ""
property myPopUp : missing value
on applicationWillFinishLaunching_(aNotification)
    tell standardUserDefaults() of current application's NSUserDefaults
        registerDefaults_({myValue:myValue})
        set myValue to objectForKey_("myValue") as text
    end tell
    myPopUp's selectItemAtIndex_(myValue - 1)
end applicationWillFinishLaunching_
on myButtonHandler_(sender)
    set myValue to (myPopUp's indexOfSelectedItem) + 1 -- This line may be mistake
end myButtonHandler_
on applicationShouldTerminate_(sender)
    tell standardUserDefaults() of current application's NSUserDefaults
        setObject_forKey_(myValue, "myValue")
    end tell
    return current application's NSTerminateNow
end applicationShouldTerminate_

我写了这段代码，但是我得到了这个调试错误：

 (Project Name)[42733:303] *** -[AppDelegate myButtonHandler:]: Can’t make «class ocid» id «data optr00000000C7FFFFFFFFFFFFFF» into type number. (error -1700)

有谁能告诉我如何修复我的代码？如何避免错误？

Answer 1

我自己解决了这个问题。

property myValue : ""
property myPopUp : missing value
on applicationWillFinishLaunching_(aNotification)
    tell standardUserDefaults() of current application's NSUserDefaults
        registerDefaults_({myValue:myValue})
        set myValue to objectForKey_("myValue") as text
    end tell
    myPopUp's selectItemAtIndex_(myValue - 1)
end applicationWillFinishLaunching_
on myButtonHandler_(sender)
    set myValue to (myPopUp's indexOfSelectedItem()) + 1 --Here is the mistake
end myButtonHandler_
on applicationShouldTerminate_(sender)
    tell standardUserDefaults() of current application's NSUserDefaults
        setObject_forKey_(myValue, "myValue")
    end tell
    return current application's NSTerminateNow
end applicationShouldTerminate_

我应该写indexOfSelectedItem（）但是我写了indexOfSelectedItem。

避免“不能......类......进入类型编号”。错误

1 个答案: