我正在尝试在一个新添加到项目中的模块中使用ViewBinding,该模块将包含项目中所有自定义视图。
目前,这个模块是唯一实现viewbinding的模块。主模块(app)使用kotlin synthetic。
最初,我有这两个自定义视图:
(Pre - ViewBinding --> 这是有效的。 我可以在附加的片段中看到它)
自定义视图1:
import kotlinx.android.synthetic.main.layout_horizontal_filter.view.*
class HorizontalFiltersView @JvmOverloads constructor(
context: Context,
attrs: AttributeSet? = null,
defStyleAttr: Int = 0
) : ConstraintLayout(context, attrs, defStyleAttr) {
private val adapter: HorizontalFilterAdapter
private val decoration: HorizontalFilterDecorator
init {
LayoutInflater.from(context).inflate(R.layout.layout_horizontal_filter, this, true)
this.adapter = HorizontalFilterAdapter(context)
this.decoration = HorizontalFilterDecorator(context, 16)
recycler.layoutManager = LinearLayoutManager(context, LinearLayoutManager.HORIZONTAL, false)
recycler.adapter = this.adapter
recycler.addItemDecoration(this.decoration)
recycler.setHasFixedSize(true)
}
fun setFilters(filtersList: MutableList<HorizontalFilter>) {
this.adapter.refresh(filtersList)
}
}
自定义视图2:
import kotlinx.android.synthetic.main.item_horizontal_filter.view.*
class HorizontalFilterItem @JvmOverloads constructor(
context: Context,
attrs: AttributeSet? = null,
defStyleAttr: Int = 0
) : FrameLayout(context, attrs, defStyleAttr) {
private var onClickAction: () -> Unit = {}
init {
LayoutInflater.from(context).inflate(R.layout.item_horizontal_filter, this, true)
setOnClickListener { onClickAction.invoke() }
}
fun setData(image: Int, title: String, action: () -> Unit = {}) {
filter_title.text = title
loadImage(image)
setClickAction(action)
}
fun setClickAction(action: () -> Unit) {
this.onClickAction = action
}
private fun loadImage(image: Int?) {
image?.let { img ->
filter_image?.let { imView ->
Glide.with(this).load(img).fitCenter().into(imView)
}
}
}
}
然后我在我的build.gradle
文件中添加了viewBinding = true
,并删除了kotlin-android-extensions
插件。
所以现在的代码看起来像这样:
class HorizontalFiltersView @JvmOverloads constructor(
context: Context,
attrs: AttributeSet? = null,
defStyleAttr: Int = 0
) : ConstraintLayout(context, attrs, defStyleAttr) {
private val adapter: HorizontalFilterAdapter
private val decoration: HorizontalFilterDecorator
private val binding = LayoutHorizontalFilterBinding.inflate(LayoutInflater.from(context))
init {
addView(binding.root)
this.adapter = HorizontalFilterAdapter(context)
this.decoration = HorizontalFilterDecorator(context, 16)
binding.recycler.layoutManager = LinearLayoutManager(context, LinearLayoutManager.HORIZONTAL, false)
binding.recycler.adapter = this.adapter
binding.recycler.addItemDecoration(this.decoration)
binding.recycler.setHasFixedSize(true)
}
fun setFilters(filtersList: MutableList<HorizontalFilter>) {
this.adapter.refresh(filtersList)
}
}
class HorizontalFilterItem @JvmOverloads constructor(
context: Context,
attrs: AttributeSet? = null,
defStyleAttr: Int = 0
) : FrameLayout(context, attrs, defStyleAttr) {
private val binding = ItemHorizontalFilterBinding.inflate(LayoutInflater.from(context))
private var onClickAction: () -> Unit = {}
init {
addView(binding.root)
setOnClickListener { onClickAction.invoke() }
}
fun setData(image: Int, title: String, action: () -> Unit = {}) {
binding.filterTitle.text = title
loadImage(image)
setClickAction(action)
}
fun setClickAction(action: () -> Unit) {
this.onClickAction = action
}
private fun loadImage(image: Int?) {
image?.let { img ->
binding.filterImage.let { imView ->
Glide.with(this).load(img).fitCenter().into(imView)
}
}
}
}
到目前为止,一切都运作良好。 但是当我打开该片段时,自定义视图未显示。
简而言之:
使用 Kotlin synthetic 可以工作并显示视图;使用 ViewBinding 则不行。
问题出在哪里?