ViewBinding 未在自定义视图中显示视图
ViewBinding not showing the view in custom views
我正在尝试在添加到项目的新模块中使用 ViewBinding,该模块将包含项目中的所有 CustomView。
目前,该模块是唯一将实现视图绑定的模块。主要模块 (app),正在使用 kotlin synthetic。
最初我有这两个自定义视图:
(Pre-ViewBinding --> 这是有效的。我可以在附件中看到它)
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)
}
}
CustomView2:
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 build.gradle
文件中添加了 viewBinding = true
并删除了 kotlin-android-extensions
插件。
所以海关看起来像:
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,一切正常。
但是当我打开片段时,自定义视图没有显示。
总而言之:
使用 Kotlin synthetic 可以正常工作并显示视图;使用 ViewBinding 它不起作用。
怎么了?
尝试替换此行:
private val binding = LayoutHorizontalFilterBinding.inflate(LayoutInflater.from(context))
有了这个:
private val binding = LayoutHorizontalFilterBinding.inflate(LayoutInflater.from(context), this, true)
添加容器参数,充气时attachToParent = true参数
我正在尝试在添加到项目的新模块中使用 ViewBinding,该模块将包含项目中的所有 CustomView。
目前,该模块是唯一将实现视图绑定的模块。主要模块 (app),正在使用 kotlin synthetic。
最初我有这两个自定义视图:
(Pre-ViewBinding --> 这是有效的。我可以在附件中看到它)
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)
}
}
CustomView2:
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 build.gradle
文件中添加了 viewBinding = true
并删除了 kotlin-android-extensions
插件。
所以海关看起来像:
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,一切正常。 但是当我打开片段时,自定义视图没有显示。
总而言之:
使用 Kotlin synthetic 可以正常工作并显示视图;使用 ViewBinding 它不起作用。
怎么了?
尝试替换此行:
private val binding = LayoutHorizontalFilterBinding.inflate(LayoutInflater.from(context))
有了这个:
private val binding = LayoutHorizontalFilterBinding.inflate(LayoutInflater.from(context), this, true)
添加容器参数,充气时attachToParent = true参数