有没有办法从 ViewDataBinding 实例中获取布局资源？

Question

我正在尝试使用数据绑定构建自定义 Recycler 视图适配器，我想知道是否可以从绑定对象获取布局资源 ID，而不是每次都传递布局资源 给构造函数

class BaseAdapter<dataType,binder:ViewDataBinding>(val data:ArrayList<dataType>,@LayoutRes val resource:Int,val onBind: (binder, dataType, Int) -> Unit]) {
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): BaseHolder {
    val v = DataBindingUtil.inflate<binder>(
        LayoutInflater.from(parent.context),
        resource,
        parent,
        false
    )
    return BaseHolder(v)
}

override fun onBindViewHolder(holder: BaseHolder, position: Int) {
    onBind(holder.binding, items[position], position)
}

}

在我的活动中，我会这样使用它

BaseAdapter<String,MatchItemBinding>(arrayListOf(""),R.layout.match_item)

但我希望做这样的事情：

BaseAdapter<String,MatchItemBinding>(arrayListOf(""), MatchItemBinding.SOMETHING_TO_GET_LAYOUT_LINKED_WITH_THIS_OBJECT)

Answer 1

这样的东西对你有用吗？

class BaseListAdapter<T, VDB : ViewDataBinding>(
    val data: ArrayList<T>,
    val onBind: (VDB, T, Int) -> Unit,
    val inflate: (layoutInflater: LayoutInflater, parent: ViewGroup?, attachToParent: Boolean) -> VDB
) : RecyclerView.Adapter<BaseListAdapter<T, VDB>.BaseHolder>() {

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): BaseHolder =
        BaseHolder(inflate(LayoutInflater.from(parent.context), parent, false))

    inner class BaseHolder(val binding: VDB) : RecyclerView.ViewHolder(binding.root)
}

你可以像这样调用 inflate

{ li, parent, attachToParent -> SpecificDataBinding.inflate(li, parent, attachToParent) }