Question

升级到Swift 3之后，每次点击一个应该打开一个新视图控制器的按钮时，我都会收到BAD INSTRUCTION错误，该按钮与我的ViewDidLoad中的代码有关。这是我的ViewDidLoad中的代码：

if teacherModeVar == "Teacher" && password != "No password set" {
        teacherModeRadioButton.state = NSOnState
        singleUserRadioButton.state = NSOffState
        unlockSettingsLabel.isEnabled = true
        unlockSettingsTextBox.isEnabled = true
        unlockSettingsButton.isEnabled = true
        levelChoiceLabel.isEnabled = false
        levelChoiceHelp.isEnabled = false
        levelChoiceOption.isEnabled = false
        teacherPasswordLabel.isEnabled = false
        teacherPasswordHelp.isEnabled = false
        enterNewPasswordLabel.isEnabled = false
        enterNewPasswordBox.isEnabled = false
        confirmPasswordLabel.isEnabled = false
        confirmPasswordBox.isEnabled = false
        saveNewPasswordButton.isEnabled = false
        typeOfLearnerLabel.isEnabled = false
        typeOfLearnerOption.isEnabled = false
    } else {
        teacherModeRadioButton.state = NSOnState
        singleUserRadioButton.state = NSOffState
        unlockSettingsLabel.isEnabled = false
        unlockSettingsTextBox.isEnabled = false
        unlockSettingsButton.isEnabled = false
        levelChoiceLabel.isEnabled = true
        levelChoiceHelp.isEnabled = true
        levelChoiceOption.isEnabled = true
        teacherPasswordLabel.isEnabled = true
        teacherPasswordHelp.isEnabled = true
        enterNewPasswordLabel.isEnabled = true
        enterNewPasswordBox.isEnabled = true
        confirmPasswordLabel.isEnabled = true
        confirmPasswordBox.isEnabled = true
        saveNewPasswordButton.isEnabled = true
        typeOfLearnerLabel.isEnabled = false
        typeOfLearnerOption.isEnabled = false
    }
    if teacherModeVar == "Single" {
        singleUserRadioButton.state = NSOnState
        teacherModeRadioButton.state = NSOffState
        unlockSettingsLabel.isEnabled = false
        unlockSettingsTextBox.isEnabled = false
        unlockSettingsButton.isEnabled = false
        levelChoiceLabel.isEnabled = false
        levelChoiceHelp.isEnabled = false
        levelChoiceOption.isEnabled = false
        teacherPasswordLabel.isEnabled = false
        teacherPasswordHelp.isEnabled = false
        enterNewPasswordLabel.isEnabled = false
        enterNewPasswordBox.isEnabled = false
        confirmPasswordLabel.isEnabled = false
        confirmPasswordBox.isEnabled = false
        saveNewPasswordButton.isEnabled = false
        typeOfLearnerLabel.isEnabled = true
        typeOfLearnerOption.isEnabled = true

我基本上使用NSUserDefaults正确填充“首选项”区域。它在Swift 2 / Xcode 7中运行良好，但在更新到Swift 3 / Xcode 8后，它给我带来了麻烦。任何想法或想法将不胜感激！

与视图控制器相关的viewDidLoad错误

0 个答案: