焦点没有移出 RowsSupportFragment
Posted
技术标签:
【中文标题】焦点没有移出 RowsSupportFragment【英文标题】:Focus not moving out of RowsSupportFragment 【发布时间】:2021-08-30 11:51:25 【问题描述】:我创建了一个活动,它有一个简单的按钮和一个放置在底部的 RowsSupportFragment。
初始焦点被赋予 Button,当我按下 D-pad 时,焦点转移到 RowsSupportFragment 中的项目,之后只有 D-pad 右和 D-pad 左工作,当我向上单击 D-pad 时,焦点不会' t 转到按钮。
activity_test.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_
android:layout_
tools:context=".standard.TestActivity">
<Button
android:id="@+id/btnTest"
android:layout_
android:layout_
android:text="Test"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toBottomOf="parent"/>
<FrameLayout
android:id="@+id/fragmentContainer"
android:layout_
android:layout_
android:scrollbars="none"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"/>
</androidx.constraintlayout.widget.ConstraintLayout>
TestActivity.kt
class TestActivity : FragmentActivity()
override fun onCreate(savedInstanceState: Bundle?)
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_test)
loadFragment()
private fun loadFragment()
supportFragmentManager.beginTransaction()
.replace(R.id.fragmentContainer, BingeRowFragment())
.commit()
BingeRowFragment.kt
class BingeRowFragment : RowsSupportFragment()
override fun onViewCreated(view: View, savedInstanceState: Bundle?)
super.onViewCreated(view, savedInstanceState)
createRows()
private fun createRows()
val movieList = listOf("Movie1", "Movie2", "Movie3", "Movie4", "Movie5", "Movie6",
"Movie7", "Movie8", "Movie9", "Movie10", "Movie11", "Movie12")
val itemPresenter = BingeItemPresenter()
val listRowAdapter = ArrayObjectAdapter(itemPresenter)
movieList.forEach
listRowAdapter.add(it)
val rowsAdapter = ArrayObjectAdapter(ListRowPresenter(FocusHighlight.ZOOM_FACTOR_MEDIUM))
rowsAdapter.add(ListRow(listRowAdapter))
adapter = rowsAdapter
BingeItemPresenter.kt
class BingeItemPresenter: Presenter()
private lateinit var movieImage: ImageView
private lateinit var movieTitle: TextView
override fun onCreateViewHolder(parent: ViewGroup): ViewHolder
// margin between items
parent.findViewById<HorizontalGridView>(R.id.row_content).setItemSpacing(24)
val cardViewLayout = LayoutInflater.from(parent.context)
.inflate(R.layout.standard_movie_item, parent, false)
movieImage = cardViewLayout.findViewById(R.id.movie_image)
movieTitle = cardViewLayout.findViewById(R.id.movie_name)
return ViewHolder(cardViewLayout)
override fun onBindViewHolder(viewHolder: ViewHolder, item: Any)
val movie = item as String
movieImage.setImageResource(R.drawable.movie)
movieTitle.text = movie
override fun onUnbindViewHolder(viewHolder: ViewHolder?)
// nullify image
【问题讨论】:
请分享您的布局和代码 我犯了一个愚蠢的错误,我使用的样式不是leanback,而是AppCompat, ,将其更改为 parent="@style/Theme.Leanback",效果很好。 我面临着类似的事情。想知道这是否仅在 API 28 上发生? @SubhasmithThapa,对我来说,它并不特定于操作系统。有时您可能会错过注意焦点,在焦点状态下向视图添加一些荧光笔。 【参考方案1】:尝试添加
<item name="focusOutFront">true</item>
<item name="focusOutEnd">true</item>
styles.xml
中的 VerticalGridView 样式
如果不起作用,请尝试添加
app:focusOutEnd="true"
app:focusOutFront="true"
到lb_rows_fragment.xml
中的VerticalGridView
【讨论】:
我犯了一个愚蠢的错误,我使用的样式不是leanback,而是AppCompat, ,将其更改为 parent="@style/Theme.Leanback",效果很好。以上是关于焦点没有移出 RowsSupportFragment的主要内容,如果未能解决你的问题,请参考以下文章