android kotlin viewBinding 新做法
寫android總是寫不好, 之前取得view要使用findViewByI的方式, 過了一段時間回頭看, 現在又改了改成使用viewBinding 說是比較快…
- gradle(module)
buildFeatures {
viewBinding = true
}- main activity
class MainActivity : AppCompatActivity() {
lateinit var binding: ActivityMainBinding
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
binding = ActivityMainBinding.inflate(layoutInflater)
setContentView(binding.root)
}
}
- 使用方式變簡單了
// 舊版
val myButton: Button = findViewById(R.id.my_button)
myButton.text = "A button"
// 新版
val myButton: Button = binding.myButton
myButton.text = "A button"
// Best way with view binding and no extra variable
binding.myButton.text = "A button"
