关于我使用的安卓View Binding方式

方案有：

ButterKnife
findViewById()
View Binding

下面看下View Binding在下面的场景怎么使用

Activities
Fragments:
    Inflate
    Bind
RecyclerView Adapter

一、Enabling View Binding
android {

// module级别的build.gradle文件中添加下名的配置
// 会自动为xml文件生成binding class
// 命名规则是Pascal case  + Binding
// 可在XML中添加属性来屏蔽生成binding class
// tools:viewBindingIgnore="true"
buildFeatures {
    viewBinding true
}

}
二、Using View Binding in Activities
class MainActivity : AppCompatActivity() {

private lateinit var binding: ActivityMainBinding

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    binding = ActivityMainBinding.inflate(layoutInflater)
    val view = binding.root
    setContentView(view)
   
    // ...

}

}

binding.myButton.setOnClickListener { // Button Tapped }
binding.myTextView.text = “View Binding is the best!”
三、Using View Binding in Fragments
inflate methos
class DemoInflateFragment : Fragment() {

private var fragmentDemoBinding: FragmentDemoBinding? = null

// 注意是在onCreateView中inflate内容，所以AsyncLayoutInflater不适应Fragment
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
    val binding = FragmentDemoBinding.inflate(inflater, container, false)
    fragmentDemoBinding = binding

    binding.myButton.setOnClickListener {
         // Button Tapped
    }

    binding.myTextView.text = "View Binding is the best!"

    return binding.root
}
override fun onDestroyView() {
    // View不见时Fragment可以存在
    fragmentDemoBinding = null
    super.onDestroyView()
}  

}
Bind method
class DemoBindFragment : Fragment(R.layout.fragment_demo) {

private var fragmentDemoBinding: FragmentDemoBinding? = null

// 构造方法中传入了，resId，默认的onCreateView中会inflate内容，此时只需要bind即可
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
    super.onViewCreated(view, savedInstanceState)
    val binding = FragmentDemoBinding.bind(view)
    fragmentDemoBinding = binding

    binding.myButton.setOnClickListener { // Button Tapped }
    binding.myTextView.text = "View Binding is the best!"
}
override fun onDestroyView() {
    // View不见时Fragment可以存在
    fragmentDemoBinding = null
    super.onDestroyView()
}        

}
四、Using View Binding in RecycleView Adapter
class Items_RVAdapter(private var itemsCells: ArrayList<String?>) : RecyclerView.Adapter<RecyclerView.ViewHolder>() {

 // 第一步，使用binding class作为root layout
class ItemViewHolder(var viewBinding: ItemRowBinding) : RecyclerView.ViewHolder(viewBinding.root)

// 第二步，inflate内容并返回ItemViewHolder
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
    val binding = ItemRowBinding.inflate(LayoutInflater.from(parent.context), parent, false)
    return ItemViewHolder(binding)
}
// 第三步，直接使用了
override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
    val itemViewHolder = holder as ItemViewHolder
    itemViewHolder.viewBinding.itemtextview.text = itemsCells[position]
}

}