I am working on Kotlin project but I am blocked by error :“Unresolved reference: View”
here is my code:
package com.android.example.aboutme
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
}
private fun addNickname(view: View) {
//Inside the addNickname function, use findViewById()
// to get a reference to the nickname_edit edit
// text and the nickname_text text view.
val editText = findViewById<EditText>(R.id.nickname_edit)
val nicknameTextView = findViewById<TextView>(R.id.nickname_text)
//Set the text in the nicknameTextView text view to the text that
// the user entered in the editText, getting it from the text property.
nicknameTextView.text = editText.text
//Hide the nickname EditText view by setting the visibility property of editText to View.GONE.
editText.visibility = View.GONE
//Hide the DONE button by setting the visibility property to View.GONE.
view.visibility = View.GONE
// make the nickname TextView view visible by setting its
nicknameTextView.visibility = View.VISIBLE
}
}