뷰 바인딩

Android com Kotlin sem ser usando findViewById에서 참조 제어를 제어할 수 있습니다. Uma boa alternativa é usando o Viewbinding. 기술 지원(포함)은 Android Studio를 로컬라이저로 제어할 수 있도록 인텔리전스를 지원합니다. 바모스 버전 코모 페이저?

Antes de mais nada coloque dentro do build.gradle da app o seguinte trecho:

    buildFeatures{
        viewBinding = true
    }

Este trecho vai dentro do bloco android.

MainActivity.kt 선언문에 대한 Agora dentro de MainActivity.kt 선언문 형식:lateinit var binding: ActivityMainBinding
Depois, Dentro de onCreate에는 다음과 같은 도구가 포함됩니다.binding = ActivityMainBinding.inflate(layoutInflater)
agora pra acessar o objeto declarado no xml tudo que é preciso é usar dessa 형식:binding.myTextView.text = "new text"
레이아웃.xml:

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/myTextView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="¿Hola?"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <Button
        android:id="@+id/myButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Click me!"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintRight_toRightOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

MainActivity.kt

package com.avanade.viewbinding

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.Button
import android.widget.TextView
import com.avanade.viewbinding.databinding.ActivityMainBinding
import org.w3c.dom.Text

class MainActivity : AppCompatActivity() {
    lateinit var binding: ActivityMainBinding

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        binding = ActivityMainBinding.inflate(layoutInflater)
        setContentView(R.layout.activity_main)

        //Antes
        val oldButton: Button = findViewById<Button>(R.id.myButton)
        val myText: TextView = findViewById<TextView>(R.id.myTextView)

        //Agora
        val button: Button = binding.myButton
        val text: TextView = binding.myTextView

        binding.myTextView.text = "new text"
    }
}

Código

근접 촬영!