簡(jiǎn)化Id檢索

從Android Jetpack的Data Binding庫(kù)中，我們可以使用Binding類(lèi)來(lái)簡(jiǎn)化這個(gè)過(guò)程

/*build.gradle*/
android {
    ...
    dataBinding {
        enabled = true
    }
}

<layout 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">

    <data>

    </data>

    <!-- Your layout code here -->

</layout>

class MainActivity : AppCompatActivity() {

    private lateinit var binding: ActivityMainBinding

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        binding = DataBindingUtil.setContentView(this, R.layout.activity_main)
        // 現(xiàn)在可以直接使用binding來(lái)訪問(wèn)視圖
        binding.textView.text = "Hello, Data Binding!"
    }
}