lateinit 属性绑定尚未初始化 / Kotlin

Question

即使我已经初始化了绑定，我也遇到了绑定问题，但它无法识别它。我同时启用了 dataBinding 和 viewBinding。

这是我的代码片段

class QuizQuestionActivity : AppCompatActivity(), View.OnClickListener {

private lateinit var binding: ActivityQuizQuestionBinding
private var mCurrentPosition: Int = 1 // Default and the first question position
private var mQuestionsList: ArrayList<Question>? = null
private var mSelectedOptionPosition: Int = 0
private var mCorrectAnswers: Int = 0

// TODO (STEP 3: Create a variable for getting the name from intent.)
// START
private var mUserName: String? = null
// END

/**
 * This function is auto created by Android when the Activity Class is created.
 */
override fun onCreate(savedInstanceState: Bundle?) {
    //This call the parent constructor
    super.onCreate(savedInstanceState)

    binding = ActivityQuizQuestionBinding.inflate(layoutInflater)
    // This is used to align the xml view to this class
    setContentView(R.layout.activity_quiz_question)

    // TODO (STEP 4: Get the NAME from intent and assign it the variable.)
    // START
    mUserName = intent.getStringExtra(Constants.USER_NAME)
    // END

    mQuestionsList = Constants.getQuestions()

    setQuestion()

    binding.tvOptionOne.setOnClickListener(this)
    binding.tvOptionTwo.setOnClickListener(this)
    binding.tvOptionThree.setOnClickListener(this)
    binding.tvOptionFour.setOnClickListener(this)
    binding.btnSubmit.setOnClickListener(this)
}

我的 gradle 文件片段

    buildFeatures {
    dataBinding = true
    viewBinding = true
}

Answer 1

setContentView(R.layout.activity_quiz_question) 使用 setContentView(binding.root) 安装