我正在使用我的recyclerview项目布局中的ComposeView来处理jetpack组合。当我打开屏幕时,我遇到了奇怪的问题
- 错误**
java.lang.IllegalStateException: Vertically scrollable component was measured with an infinity maximum height constraints, which is disallowed. One of the common reasons is nesting layouts like LazyColumn and Column(Modifier.verticalScroll()). If you want to add a header before the list of items please add a header as a separate item() before the main items() inside the LazyColumn scope. There are could be other reasons for this to happen: your ComposeView was added into a LinearLayout with some weight, you applied Modifier.wrapContentSize(unbounded = true) or wrote a custom layout. Please try to remove the source of infinite constraints in the hierarchy above the scrolling container.
我尝试跟踪此stack overflow,但没有成功
- 主要活动. xml**
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/list"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="parent" />
- 项目布局. 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"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<androidx.compose.ui.platform.ComposeView
android:id="@+id/itemComposable"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0" />
</androidx.constraintlayout.widget.ConstraintLayout>
- 视图夹. kt**
class OptionsViewHolder(val binding: ItemLayoutBinding) : Recyclerview.ViewHolder(binding.root) {
private val context = binding.root.context
companion object {
fun from(parent: ViewGroup): OptionsViewHolder {
return OptionsViewHolder(
ItemLayoutBinding.inflate(
LayoutInflater.from(parent.context),
parent,
false
)
)
}
}
fun bindChoice() {
binding.itemComposable.setContent {
BoxWithConstraints {
LazyColumn(
modifier = Modifier
.fillMaxWidth()
.height(this@BoxWithConstraints.maxHeight)
.verticalScroll(rememberScrollState())
) {
items(getOptions()) { option ->
Text(text = option)
}
}
}
}
}
private fun getOptions() = mutableListOf(
context.getString(R.string.monitor),
context.getString(R.string.pressure),
context.getString(R.string.not_sure)
)
}
2条答案
按热度按时间hwamh0ep1#
您正在RecyclerView中使用LazyColumn,这是不允许的。LazyColumn等效于合成中的RecyclerView。因此,您正在嵌套RecyclerView或LazyColumn。
68bkxrlz2#
在Jetpack合成中制作一个嵌套的垂直列表。
嘿,这很简单,我想出来了..假设我们有一个数据结构(在Kotlin)
首先有一个LazyColumn